1. $239 television; 10% discount 2. $72 game; 20% discount

3. $18.95 football; 15% discount 4. $10.99 CD; 25% discount

5. $149 MP3 player; 40% discount 6. $213 ski jacket; 30% discount

7. $595 refrigerator; 20% discount 8. $64 video game; 25% discount

9. $119 croquet set; 50% discount 10. $14.99 clock; 10% discount
11. A radio is on sale for $50. If this price represents a 10% discount from the original price, what is the original price to the nearest nickel? Hint: need to use a proportion to find the whole.
12. A box of laundry detergent is on sale for $6.50. If this price represents a 40% discount from the original price, what is the original price to the nearest cent?
13. Determine the price of a $35 basketball that is on sale for 50% off the regular price.
14. Dominic bought a new alarm clock that was on sale for $18.75. If this price represents a 30% discount from the original price, what is the original price to the nearest cent?
15. Michael bought a new fishing rod. The regular price of the fishing rod was $125.99. He bought it on sale with a 15% discount. Sales tax of 3% is applied to the discounted total. What was the sale price with tax of Michael’s fishing rod to the nearest cent?
16. Jaylynn was buying new mascara. She bought it on sale for $5.56. If the price represents a 20% discount from the original price, what is the original price to the nearest cent?


Please help! It is due TOMORROW!!! :[I] HELP!!

Answers

Answer 1

These are 16 questions and 16 answers

Answer:

See below and the attachment.

Explanation:

From 1 to 10, find the sale price to the nearest cent:

1. $239 television; 10% discount

   [tex]Sale\text{ }price=Orignal\text{ }price-discount\\ \\ Sale\text{ }price=\$239-10\%\times \$239=\\\\ Sale\text{ }price=\$239-0.10\times \$239=\\\\ Sale\text{ }price=\$239-\$23.9=\$215.10[/tex]

2. $72 game; 20% discount

You can also multiply by the factor (1 - % discount);

For instance for 20% discount, the factor is 1 - 20% = 1 -0.20 = 0.80. Which means that you can multiply the original price by the factor 0.80 to get the sale price:

              [tex]Sale\text{ }price=Orignal\text{ }price\times factor\\ \\ Sale\text{ }price=\$72\times(1-0.20)=\\\\ Sale\text{ }price=\$72\times0.80=\\\\ Sale\text{ }price=\$57.60[/tex]

3. $18.95 football; 15% discount

             [tex]Sale\text{ }price=Orignal\text{ }price\times factor\\ \\ Sale\text{ }price=\$18.95\times(1-0.15)=\\\\ Sale\text{ }price=\$18.95\times0.85=\\\\ Sale\text{ }price=\$16.11[/tex]

4. $10.99 CD; 25% discount

            [tex]Sale\text{ }price=Orignal\text{ }price\times factor\\ \\ Sale\text{ }price=\$10.99\times(1-0.25)=\\\\ Sale\text{ }price=\$10.99\times0.75=\\\\ Sale\text{ }price=\$8.24[/tex]

5. $149 MP3 player; 40% discount

            [tex]Sale\text{ }price=Orignal\text{ }price\times factor\\ \\ Sale\text{ }price=\$149\times(1-0.40)=\\\\ Sale\text{ }price=\$149\times0.60=\\\\ Sale\text{ }price=\$89.40[/tex]

6. $213 ski jacket; 30% discount

            [tex]Sale\text{ }price=Orignal\text{ }price\times factor\\ \\ Sale\text{ }price=\$213\times(1-0.30)=\\\\ Sale\text{ }price=\$213\times0.70=\\\\ Sale\text{ }price=\$149.10[/tex]

7. $595 refrigerator; 20% discount

            [tex]Sale\text{ }price=Orignal\text{ }price\times factor\\ \\ Sale\text{ }price=\$595\times(1-0.20)=\\\\ Sale\text{ }price=\$595\times0.80=\\\\ Sale\text{ }price=\$476.00[/tex]

8. $64 video game; 25% discount

          [tex]Sale\text{ }price=Orignal\text{ }price\times factor\\ \\ Sale\text{ }price=\$64\times(1-0.25)=\\\\ Sale\text{ }price=\$64\times0.75=\\\\ Sale\text{ }price=\$48.00[/tex]

9. $119 croquet set; 50% discount

You should not have problems with this: 50% discount means that you will pay half the price.

Hence, the sale price is:

           [tex]Sale\text{ }price=Orignal\text{ }price/2 \\\\ Sale\text{ }price=\$59.50[/tex]

10. $14.99 clock; 10% discount

            [tex]Sale\text{ }price=Orignal\text{ }price\times factor\\ \\ Sale\text{ }price=\$14.99\times(1-0.10)=\\\\ Sale\text{ }price=\$14.99\times0.90=\\\\ Sale\text{ }price=\$13.49[/tex]

11. A radio is on sale for $50. If this price represents a 10% discount from the original price, what is the original price to the nearest nickel? Hint: need to use a proportion to find the whole.

First note that if the discount is 10%, the sale price is 100% - 10% = 90% of the original price.

Let's set the proportion that represents the proportionality between the two ratios, starting with the fact that $ is the 90% and original price is the 100% (the whole part):

First ratio: $50/90

Second ratio: x /100

Proportion: first ratio = second ratio

             [tex]\$50/90=x/100[/tex]

Solve for x:

              [tex]x=100\times\$50/90=\$55.55[/tex]

Hence, the original price is $55.55

12. A box of laundry detergent is on sale for $6.50. If this price represents a 40% discount from the original price, what is the original price to the nearest cent?

Use the same hint used in the question above: set a proportion.

Remember a 40% discount means that the sale price is 60% of the original price:

              [tex]\$6.50/60=x/100\\ \\ x=100\times\$6.50/60=\$10.83[/tex]

13. Determine the price of a $35 basketball that is on sale for 50% off the regular price.

Again, 50% discount means that the sale price will be half of the original price, or the original price will be double of the sale price.

Here, the original price is $35, hence the sale price is $35/2 = $17.50

14. Dominic bought a new alarm clock that was on sale for $18.75. If this price represents a 30% discount from the original price, what is the original price to the nearest cent?

Since the price is after a 30% discount, the sale price is a 70% of the original price, and you set the proportion:

          [tex]\$18.75/70=x/100[/tex]

Solve for x:

           [tex]x=100\times\$18.75/70=\$26.79[/tex]

15. Michael bought a new fishing rod. The regular price of the fishing rod was $125.99. He bought it on sale with a 15% discount. Sales tax of 3% is applied to the discounted total. What was the sale price with tax of Michael’s fishing rod to the nearest cent?

First find the the sale price after the 15% discount:

           [tex]\$125.99\times(1-0.15)=\$125.99\times0.85=\$107.09[/tex]

Now add the 3% tax:

          [tex]\$107.09\times1.03=\$110.30[/tex]

Hence, the sale price with tax is $110.30

The last answer (# 16) is in the attached file, since this already exceeds the number of characters allowed.

1. $239 Television; 10% Discount 2. $72 Game; 20% Discount3. $18.95 Football; 15% Discount 4. $10.99

Related Questions

What is The midpoint of AB=(1,

Answers

The midpoint of AB is point G

Explanation:

The complete question has been attached below. As you can see, we have a line segment which is defined as a part of a line that is bounded by two different points that are at the end of the segment. So here we know that:

A is located at point -6.B is located at point 8

Therefore, the midpoint can be calculated as:

[tex]M:midpoint \\ \\ \\ M=\frac{A+B}{2} \\ \\ M=\frac{-6+8}{2} \\ \\ M=1[/tex]

So the midpoint is [tex]M=1[/tex] that matches point G. Finally:

Conclusion: The midpoint of AB is point G

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Brandus bought 1/3 pound of ground turkey and 1/4 pound of ground beef to make sausages. How many pounds of meat did he buy?

Answers

He brought 7/12 lbs of meat .

Brandus bought a total of 7/12 pounds of meat by adding together 1/3 pound of ground turkey and 1/4 pound of ground beef.

To find out how much meat Brandus bought, you need to add the weights of the ground turkey and the ground beef. Brandus bought 1/3 pound of ground turkey and 1/4 pound of ground beef.

Convert the fractions to have a common denominator:

1/3 = 4/12 (multiply both the numerator and the denominator by 4)

1/4 = 3/12 (multiply both the numerator and the denominator by 3)

Add the two amounts:

4/12 + 3/12 = 7/12

Hence, Brandus bought 7/12 pounds of meat in total to make sausages.

The quotient of a number and 4 is 7-

Answers

Answer:

-7/4

Step-by-step explanation:

Did you mean -7?

(SAT Prep) Find the value of x in each of the following exercises:
Look at picture! WILL MARK BRAINLIEST !!

PLS ANSWER FAST

Answers

The angles of a triangle always add to 180°. In the triangle with 35°, we know that the other angle is 55° since 180 - 90 - 35 = 55. Know we know that 55° angle, 60° angle and the unknown angle will add to 180° because they form a flat line. So 180 - 60 - 55 = 65. Next, we subtract 65° and 90° from 180° to get the last unknown angle, which is 25°. Lastly we subtract 25° from 180 because the x angle and the 25° angle form a a flat line. 180 - 25 = 155.

I believe the measure of angle x is 155°.

The required value of the exterior angle x = 155°

A figure of angle in triangles is shown in which the value of x is to be determined.

What is the angle?

The angle can be defined as the one line inclined over another line.


From the image attached below From the orange triangle,
The sum of the interior angle of a triangle is 180°,
35 + 90 + z =180
z = 180 -90 - 35
z = 55
Now, the sum of the angle
z + y + 60 = 180
55 + y + 60 = 180
y = 180 -60 - 55
y = 65

Now angle x can be given as the sum of the remote angle is equal to exterior angle x.
35 + z + y = x
35 + 55 + 65 = x
x = 155

Thus, the required value of the exterior angle x = 155°

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In country​ A, about three times as many cars are manufactured per day than in country B. If the total number of these cars manufactured per day is 26 comma 416​, find the number manufactured in country B and the number manufactured in country A.

Answers

Answer:

country a = 19,812 cars

country b = 6,604 cars

Step-by-step explanation:

a = country a

b = country b

the 2 eqations are:

a + b = 26,416

a = 3b

now substitute 3b for a in the first equation:

3b + b = 26,416

add the variables:

4b = 26,416

now divide 26,416 by 4 (26,416/4)

b = 6,604

so country b has 6,604 cars

to find country b, substitute the number of cars in country b (which is 6,604) in the second equation:

a = 3b

a = 3 × 6,604

a = 19,812

so country a has 19,812 cars

5 (2 x + 1 )= 50 please help me​

Answers

Answer:

x = 4.5.

Step-by-step explanation:

5(2x + 1) = 50

10x + 5 = 50

10x = 50 -  5

10x = 45

x = 4.5.

Juanita has 102 beads to make n necklaces. Each necklace will have 17 beads.

Answers

Answer:

There will be 6 necklaces

Step-by-step explanation:

102/17 is 6

Answer:Juanita can make 6 bracelets.

Step-by-step explanation:

Divide 102 and 17 then you should get 6.

What k/8-1=-3 what is the answer for k

Answers

first you would subtract one from 8. then you would multiply by the reciprocal on both sides then your answer would be -21.

NO CAP 45 PTS I NEED A 100
Which situation is best modeled by an exponential function?

A.the cost to rent a bicycle from a company that charges a flat rate plus x dollars per day

B.the amount of a substance remaining after x years if it is decreasing at a rate of 25% annually

C.the number of gas stations in a town that had 4 stations in 2010 and x new stations have opened each year since

D.the distance a car is from a fixed point if the car was originally 200 feet from that point and traveled at a speed of x miles per hour

Answers

The best scenario for an exponential function is Option B, as it describes a consistent percentage decrease annually, which is characteristic of exponential decay.

The situation that is best modeled by an exponential function is Option B, which describes the amount of a substance remaining after x years if it is decreasing at a rate of 25% annually. This exemplifies an exponential decay scenario where the rate of change of a quantity is directly proportional to its current value. Over time, the substance decreases by a consistent percentage, which is characteristic of exponential decay functions.

A key feature of exponential relationships is that they describe processes where the change at any given point is proportional to the current amount, which fits the description of a substance decreasing by a consistent percentage each year.

solve the following .72 divide by 1/3

Answers

Answer:

the answer is to 72 divided by 1/3 is 216

The result of the division 72 divide by 1/3 is : 216.

Here, we have,

given that,

What is 72 divide by 1/3

we know that,

72 divide by 1/3 is the same thing as 72 times 3/1.

i.e. 72 ÷ 1/3

=> 72 × 3/1

now, we know that,

So 72 x 3 = 216

=> 216/1

And 216 divided by 1 is 216.

so, we get,

Hence, The result of the division 72 divide by 1/3 is : 216.

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simplify the expression -2-17+12-(-4)

Answers

Answer:

- 3

Step-by-step explanation:

hello:

-2-17+12-(-4)=(-2-17)+(12+4)= -19+16= -3

Answer:

-3

Step-by-step explanation:

-2-17+12-(-4)

From BODMAS, we begin witht the bracket

=-2-17+12+4

= -2-17+16

= -19+16

= -3

find the domain and range (0,1), (3,1), (3,9)

Answers

Answer:

domain={0,3}

range={1,9}

Step-by-step explanation:

PLS ANSWER AND LOOK UNDER THE QUESTION TOO :)))

What is the solution to the following system of linear equation?

y= 2x+3

y= -1/2x -2


A. (2,1)


B. (-1,-2)


C. (1,2)


D. (-2,-1)



if anyone's parents dont accept them for the way they are or they dont feel accepted then i just wanted to say them im ur new fam now and i luv ya <333333333333333

Answers

D. (-2,-1)

Hope it helps you.

Answer:

D

Step-by-step explanation:

Given the 2 equations

y = 2x + 3 → (1)

y = - [tex]\frac{1}{2}[/tex] x - 2 → (2)

Since both equations express y in terms of x, equate the right sides

2x + 3 = - [tex]\frac{1}{2}[/tex] x- 2

Multiply through by 2 to clear the fraction

4x + 6 = - x - 4 ( add x to both sides )

5x + 6 = - 4 ( subtract 6 from both sides )

5x = - 10 ( divide both sides by 5 )

x = - 2

Substitute x = - 2 into (1) for corresponding value of y

y = 2(- 2) + 3 = - 4 + 3 = - 1

Solution is (- 2, - 1 ) → D

Rectangle URST undergoes a dilation centered at the origin. The result is rectangle U'R'ST. Which rule describes

the dilation?



Plsssss help

Answers

Answer:

The rule depends on the scale factor.

Step-by-step explanation:

Hi there,

1) Many, I'd say mostly, dilations is centered at the origin (0,0) of the cartesian plane. Like the picture below.

2) So now, what's left to do is what is the scale factor? What coefficient that multiplies the original rectangle URST, will result the U'R'S'T'?

3) Since no coordinates, no options or any numerical value were given, then I've made one example.

Check below

If you do have the coordinates of each point then divide each coordinate this way

[tex]\frac{U'(x,y)}{U(x,y)}=\frac{R'(x,y)}{R(x,y)}=\frac{S'(x,y)}{S(x,y)}=\frac{T'(x,y)}{T(x,y)}=scale \:factor\\\frac{U'(-4,4)}{U(2,2)}\Rightarrow U'=2U\\(x,y)=D2(x,y)[/tex]

Answer:

you didn't put a picture

Step-by-step explanation:

look at the images please help
I WILL MARKTHE BRAINLEST PLEASE HELP

Answers

Answer:

not too sure sorry :(

Step-by-step explanation:

The FitnessGram™ Pacer Test is a multistage aerobic capacity test that progressively gets more difficult as it continues. The 20 meter pacer test will begin in 30 seconds. Line up at the start. The running speed starts slowly, but gets faster each minute after you hear this signal. [beep] A single lap should be completed each time you hear this sound. [ding] Remember to run in a straight line, and run as long as possible. The second time you fail to complete a lap before the sound, your test is over. The test will begin on the word start. On your mark, get ready, start.

If the nth term of an A.P. is 3n+2, find the sum of first 'n terms of that AP.​

Answers

Answer:

[tex]S_{n}[/tex] = [tex]\frac{n}{2}[/tex] (3n + 7)

Step-by-step explanation:

We require to find the first term a₁ and the common difference d

The n th term is given by 3n + 2, thus

a₁ = 3(1) + 2 = 3 + 2 = 5

a₂ = 3(2) + 2 = 6 + 2 = 8

d = 8 - 5 = 3

[tex]S_{n}[/tex] = [tex]\frac{n}{2}[/tex] [ 2a₁ + (n - 1)d ], substitute values

[tex]S_{n}[/tex] = [tex]\frac{n}{2}[/tex] [ (2 × 5) + 3(n - 1) ] = [tex]\frac{n}{2}[/tex] (10 + 3n - 3) = [tex]\frac{n}{2}[/tex] (3n + 7)

Answer:

Sn = (3/2)n² + (7/2)n

Step-by-step explanation:

Sn = (n/2)[2a + (n-1)d]

a = 3(1)+2 = 5

d = second term - 5 = 3(2)+2 - 5 = 3

Sn = (n/2)[2(5) + (n-1)(3)]

= (n/2)[10 + 3n - 3]

= (n/2)(7 + 3n)

Sn = (3/2)n² + (7/2)n

Find the slope of the graph
EASY 40 POINTS

Answers

i think its 1/3 because you solve for y and slope is whatevers in front of x

A savings account of $5,000 for 12 years, compounded at an annual interest rate of 6%

Answers

Answer: 3600

Step-by-step explanation:

What is the graph for the above relationship?



A. 1st Graph

B. 2nd Graph

C. 3rd Graph

D. 4th Graph



Answers

Second graph.

Explanation:

Hello! You haven't provided any relationship, but I found it on the internet and it is the table attached below. The point-slope form of the equation of a line is given by:

[tex]y=mx+b[/tex]

So:

[tex]y-Intercept: \\ \\ (0,b) \\ \\ \\ From \ the \ table: \\ \\ (0,b)=(0,46) \\ \\ So: \\ \\ b=46[/tex]

Finding the slope:

[tex]m=\frac{39-46}{1-0} \\ \\ m=-7[/tex]

So the equation of the line is:

[tex]y=-7x+46[/tex]

From the graphs, only option 2 and 4 have negative slope and only option 2 passes through [tex](0,46)[/tex]

Conclusion: Correct option is second graph.

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Find the final price on a $1049 television that is on sale for 12% off if the sales tax is 4.5%

Answers

Final answer:

The final price of a $1049 television on a 12% sale, with a 4.5% sales tax, is $964.66.

Explanation:

The final price on a $1049 television that is on sale for 12% off can be found by deducting the discount from the original price, and then adding the sales tax on the discounted price.

First, let's find the discount: 12% of $1049 is (12/100)*1049 = $125.88. So, the price after discount would be 1049 - 125.88 = $923.12.

Next, we need to add the 4.5% sales tax. Sales tax is calculated on the discounted price, so 4.5% of $923.12 is (4.5/100)*923.12 = $41.54.

Finally, we add the tax to the discounted price to get the final price: $923.12 + $41.54 = $964.66. So, the final price of the television is $964.66.

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The geometric sequence bn is defined below. Find b3.
B1 = 54
R= -1/3

Answers

Answer:

6

Step-by-step explanation:

hello :

the nth term is : Bn= B1×R^n-1

calculate B3  (when n=3)    R= -1/3   B1 = 54

B3 =54×(-1/3)^(3-1)

B3 =54×(1/9)=6

Knowing about geometric sequences we have that its third term will be given by 6

What is the geometric sequences formula?

Geometric Progression (PG) is a numerical continuity in which the division of a term with its previous one, except the first, will result in a single value, the so-called ratio (q), that is: PG: (a1, a2, a3, a4, ..., an), where q = (a2/a1 = a3/a2 = a4/a3,.

Given that:

B1 = 54R= -1/3

The formula of the term will be:

[tex]Bn= B1*R^n-1[/tex]

Calculated the B3 we have:

[tex]B3 =54*(-1/3)^{(3-1)}\\B3 =54*(1/9)=6[/tex]

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PLEASE HELP (answer only if you now)

Answers

Answer:

y = 30

Step-by-step explanation:

If y varies directly with x, then you can make a ratio:

24/8

Simplify the ratio:

3/1

Y is always the first number/ on top in a ratio, that's where I get 24 over 8

3/1 means that y is triple x

so 10 * 3 is 30

Your credit score is 580. Your current credit card limit is $2,000. Your current credit card balance is $1,950. If you shrink your debt balance by 13% each month for 12 months what will your balance be?

Answers

Answer:

$366.66

Step-by-step explanation:

Final answer:

You start with a credit card balance of $1950. If you reduce this balance by 13% each month for 12 months, using the formula for geometric series (a(r^n)), your final balance at the end of 12 months will be approximately $452.98.

Explanation:

The student's question is asking about reducing a credit card debt balance by a fixed percent each month. In this case, the student is reducing their debt by 13% every month for 12 months. To get a clear picture, let's go through this step by step.

Initially, the credit card balance is $1950. In the first month, the student reduces the debt by 13% which is $253.5. So, the remaining balance at the end of first month would be $1950 - $253.5 = $1696.5

This process is repeated each month. For example, in the second month, the student reduces the new amount of $1696.5 by 13%. The debt will continue to decrease in this manner each month.

To calculate the balance at the end of 12 months, we would use the formula for geometric series: a(r^n), where 'a' is the initial amount of debt($1950), 'r' is the percentage (1 - 13% or 0.87) and 'n' is the number of months (12).

Your final balance at the end of 12 months would be $1950*(0.87^12) which approximately equals $452.98. Hence, by reducing your debt by 13% each month for 12 months, your balance will be approximately $452.98. But remember, maintaining steady payments and not adding to the balance by new purchases is also important in managing credit card debt.

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P (2, 3) and Q (6, 10) are two points on the Cartesian plane.
Find the length of PQ
Find the coordinates of the midpoint of PQ
Find the equation of PQ

Answers

Step-by-step explanation:

Given:

[tex] (x_1, \: y_1 ) =(2, \:3)\:\:\&\:\: (x_2, \: y_2) =(6, \:10)[/tex]

[tex]l(PQ) = \sqrt{ {(x_1 - x_2)}^{2} + {(y_1 - y_2)}^{2}} \\ \\ = \sqrt{ {(2 - 6)}^{2} + {(3 - 10)}^{2}} \\ \\ = \sqrt{ {( - 4)}^{2} + {( - 7)}^{2}} \\ \\ = \sqrt{16 + 49} \\ \\ = \sqrt{65} \\ \\ \therefore \purple{ \boxed{ l(PQ) = 8.06 \: units}}\\\\[/tex]

Let S be the mid-point of PQ.

[tex]\therefore S = \{\frac{x_1+x_2}{2}, \:\:\frac{y_1+y_2}{2}\} \\\\

= \{\frac{2 +6}{2}, \:\:\frac{3+10}{2}\} \\\\

= \{\frac{8}{2}, \:\:\frac{13}{2}\} \\\\

\therefore S= \{4, \:\:6.5\} \\\\[/tex]

Equation of line PQ is given as:

[tex] \frac{y-y_1}{y_1 - y_2}=\frac{x-x_1}{x_1 - x_2} \\\\

\therefore \frac{y-3}{3 - 10}=\frac{x-2}{2 - 6} \\\\

\therefore \frac{y-3}{-7}=\frac{x-2}{-4} \\\\

\therefore \frac{y-3}{7}=\frac{x-2}{4} \\\\

\therefore 4(y-3)=7(x-2)\\\\

\therefore 4y-12=7x-14\\\\

\therefore 7x-14 - 4y + 12=0\\\\

\red{\boxed {\therefore 7x-4y - 2 =0}} [/tex]

Answer:

length = square root of ((2-6)^2)+((3-10)^2) = square root (of) 16+49

square root of 65 =  8.062257748  = approx 8.1

midpoint = (x1+x2)/2  ,  (y1+y2)/2

= 2+6  /2  ,  3+10  /2

=8/2 , 13/2

= 4, 6.5 (midpoint)

equation= y=mx+c

m(gradient) = (y2-y1)/(x2-x1) or (y1-y2)/(x1-x2)

= so,  (3-10)/(2-6)  (y1-y2)/(x1-x2)- i normally use this one

= -7/-4 = 1.75

so y=1.75x+c

plug in the values from any one of them (2,3) or (6,10)

to get

for example:  3=1.75*2+c

3=3.5+c

-0.5=c

now we get the equation y=1.75x+(-0.5)

you always have to have a plus( +(-0.5)) since the equation is y=mx+c

Find the exact values below. if applicable, click on "undefined". cot7pi/6

Answers

Yo sup??

cot(7π/6)=cot(π+π/6)

=cot(π/6)

=√3

Hope this helps

Answer:

[tex]\sqrt{3}[/tex]

Step-by-step explanation:

Using the trigonometric identity

cot x = [tex]\frac{1}{tanx}[/tex]

Consider tan([tex]\frac{7\pi }{6}[/tex] )

[tex]\frac{7\pi }{6}[/tex] is an angle in the third quadrant where tan > 0

Thus tan([tex]\frac{7\pi }{6}[/tex] ) = tan([tex]\frac{7\pi }{6}[/tex] - π ) = tan([tex]\frac{\pi }{6}[/tex] ) = [tex]\frac{1}{\sqrt{3} }[/tex]

Hence

cot([tex]\frac{7\pi }{6}[/tex] ) = [tex]\frac{1}{\frac{1}{\sqrt{3} } }[/tex] = [tex]\sqrt{3}[/tex]

An ecologist wishes to find the height of a redwood tree that is on the other side of a creek, as shown in the figure below. From point A he finds that the angle of elevation to the top of the tree is 10.4°. He then walks 24.8 feet at a right angle from point A to point B. There he finds that the angle between AB and a line extending from B to the tree is 85.8°. What is the height h of the tree? (Round your answer to one decimal place.)

Answers

Final answer:

The height of the redwood tree can be determined through trigonometry, using the tangent of the angles given and the distances provided. The height of the tree from point B is found to be 1.8 feet, and the total height of the tree from point A is found to be approximately 30.9 feet.

Explanation:

In this question, we can use trigonometry to solve the problem. From point B, we see two angles. The smaller angle, 85.8°, is the angle from the line extending to the tree and line AB, and the greater angle is 90°. Therefore, the angle between the line extending to the top of the tree and line AB is (90-85.8)= 4.2°.

Using the tangent function, which is the ratio of the opposite side to the adjacent side in a right triangle, we can solve for h. Tan 4.2° = h/24.8 feet. Solving for h gives us h = 24.8 feet * tan 4.2°. Using a calculator, we find that h is approximately 1.8 feet.

Similarly, let's calculate the height from point A. From point A, the angle of elevation to the top of the tree is 10.4°. The distance from the tree to point A is the sum of the length of AB (24.8 feet) and the length from B to the tree (h/tan 85.8°). So, the total height of the tree is h (from point B) + distance from A to the tree * tan 10.4°. This calculation gives us h = 1.8 feet + (24.8 feet + 1.8 feet/tan 85.8°)*tan 10.4°. After doing the calculations, we find that the height of the tree is approximately 30.9 feet when rounded to one decimal place.

Learn more about Trigonometry here:

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Find the value of y. y-62=-86

Show how you got the answer

Answers

Answer:y=-24

Step-by-step explanation:

Move all terms not containing

y

to the right side of the equation.

how do you get b? show me how if you can, please.

Answers

Answer:

<ABC = 98.

Step-by-step explanation:

We know that the triangle is lying on a flat line, which is 180 degrees. We know that angle ABC and angle CBD are supplementary as they both use line ABD as their transversal.

Set up the equation (3 + 5x) + 82 = 180.

Solve for x, and you get 19.

Plug it back in to (3 + 5x), we get <ABC = 98.

I needs to pour 2 gallons of water into his fish tanks. All he has is a measuring cup how many cups of water should he put in the tank? Explain?​

Answers

Answer:

32 cups of water is needed to fill a 2 gallon water tank.

Step-by-step explanation:

Here, the amount of water to be filled in the fish tank = 2 gallons

The utensil to measure water   =  a measuring cup

Now, as we know:

1 quart  = 0.25 gallons

⇒ 4 pints =  1  gallons

⇒ 8 pints =  2 gallons

Also, 1 pint  = 0.5 quart

⇒ 2 pints =  1 quarts

⇒ 8 pints =  4 quarts

⇒ 16 pints =  8 quarts

Again,  1 cup = 0.5 pint

⇒ 2 cup  = 1  pint

⇒ 32 cup  = 16  pints

Hence, 32 cups of water is needed to fill a 2 gallon water tank.

Frank exercises 60 minutes a day if he does this every day for a one year how many minutes will he have exercised

Answers

21,900 minutes

60 minutes times 365 days in a year = 21,900
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