Simplify the expressions and evaluate for (i) y = -2, (ii) y = 3.
3y (2y-7) - 3 (y - 4) - 63

Answer:

C) 38 units2

Step-by-step explanation:

we know that

The surface area of the composite figure is equal to the area of all its square faces

Each face area is one square unit

so

[tex]SA=2(9)+2(4)+2(6)=38\ units^2[/tex]

Answer:

$27

Step-by-step explanation:

f(x) = 5x + 12

= 5(3) + 12

= 15 + 12

= 27

Alex will earn $27 for 3 hours of lawn-cutting work, as calculated using the function f(x) = 5x + 12.

The function f(x) = 5x + 12 models the amount of money, in dollars, Alex makes when cutting lawns for x hours. To calculate the amount Alex will make for 3 hours of lawn-cutting work, we simply substitute x with 3 in the equation:

f(3) = 5(3) + 12

For instance, events G and H (taking a math class and taking a science class, respectively) from Example 3.9 were shown to be independent by verifying that P(G AND H) = P(G) * P(H). Similarly, events A and B from 'Try It Σ' 3.8, learning Spanish and German, were tested for independence by checking if P(A AND B) = P(A) * P(B).

Thus, f(3) = 15 + 12 which equals $27. Therefore, for 3 hours of work, Alex will earn $27.

Answer:

76/11 ; 7.32 ; 7.546 ; 151/20

Step-by-step explanation:

Given data:

The numbers are listed as below

151/20 ; 76/11 ; 7.32 ;7.546

The numbers are written in the same format that is in decimal form

7.55 ; 6.90901 ; 7.32 ; 7.546

Arranging the numbers starting with the least number

6.90901 ; 7.32 ; 7.546 ; 7.55

76/11 ; 7.32 ; 7.546 ; 151/20

Please note the value of 151/20 is exactly 7.550 which makes it larger than 7.546.

=====================================

Work Shown:

AB + BC = AC .... see diagram below

(3x)+(2x-2) = 18 ... plug in given expressions

5x-2 = 18

5x-2+2 = 18+2 ... add 2 to both sides

5x = 20

5x/5 = 20/5 ... divide both sides by 5

x = 4

Given points A, B and C are collinear, with B between A and C, and the distances between them expressed in terms of 'x'. We use the fact that AB + BC = AC to form an equation, solve it to find 'x' = 4.

To solve for 'x' in this problem, we need to utilize the fact that points A, B, and C are collinear and that point B is between A and C.

Given AB = 3x, BC = 2x - 2, and AC = 18.

When points are collinear and one is between the other two, the sum of the distances between the points equals the total distance. So, we know that AB + BC = AC.

Substitute the known values into this equation to get 3x + 2x - 2 = 18.

Combine like terms to give 5x -2 = 18. Rearrange this to make 'x' the subject, you get 5x = 20, then x = 4.

So the value of 'x' that satisfies the given conditions is 4.

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Answer:

 P = 2x + 2y + 8, Answer is A

Step-by-step explanation:

I got it right on the test so yea.

Answer:

2.4 miles

Step-by-step explanation:

If Hans ran 3 miles in 25 minutes, that would mean he ran 0.6 miles every five minutes. So, 0.6*4=2.4, as 4/5*25=20.

Answer:

.10 %

Step-by-step explanation:

Final answer:

The probability of being marked tardy when events are mutually exclusive is 0.8, and when they are independent, the probability is 0.09.

Explanation:

The probability that a student will be marked tardy if the events on-time and marked tardy are mutually exclusive is 0.9 - 0.1 = 0.8. When events A and B are independent, the probability of both events occurring is the product of their individual probabilities: P(A and B) = P(A) * P(B). In this case, P(on-time) * P(tardy) = 0.1 * 0.9 = 0.09.

The number 846 does have a component in the tens place, which is the digit 4, representing 40 when viewed in terms of place value. Understanding the concept of place value, including the tens place, is fundamental in mathematics for efficient calculation and comprehension of numbers.

The question seems to be asking whether the number 846 can be classified in terms of its placement in the tens place value or not. To understand this, let's break down the number 846 in terms of place value. The number 846 is comprised of three digits, each representing a different place value in the base-10 numbering system. Starting from the right, the first digit (6) represents the ones place, the second digit (4) represents the tens place, and the third digit (8) represents the hundreds place.

Therefore, yes, 846 does have a component in the tens place, which is the digit 4. This means that the number 846 has 4 tens or 40 when breaking it down by place value. Understanding place value is crucial in mathematics as it helps in doing calculations, understanding the value of numbers, and in various operations such as addition, subtraction, multiplication, and division. The tens place specifically is important when dealing with numbers ranging from 10 to 99 and beyond, as it helps in grouping numbers in units of ten, simplifying calculations, and enhancing comprehension of numbers' sizes.

Payton will play 180 games in 3 hours.

Step-by-step explanation:

Given,

Games played in 15 minutes = 15 games

We will find unit rate;

15 minutes = 15 games

Dividing both sides by 15

[tex]\frac{15}{15}\ minutes=\frac{15}{15}\ games\\\\1\ minute = 1\ game[/tex]

Time = 3 hours = 3*60 = 180 minutes

180 minutes = 180*games per minute

180 minutes = 180*1 games

180 minutes = 180 games

Payton will play 180 games in 3 hours.

Keywords: unit rate, multiplication

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Answer: 4 feet.

Step-by-step explanation:

Their is one rectangular prison divided into two.

The volume of the first one is

V1= L X H X W=80.

Volume of the second one is

V2= L X H X W

V2= 6 X H X 5

V2 = 30H

Now from the question, the total volume is 200cubic feet which means V1 + V2 = 200, recall that V1=80 and V2=30H, so we say;

80+30H=200, collecting the like term we have, 30H=200-80.

30H=120, divide both side by 30

30H/30=120/30

H= 4feet.

Height is 4feet.

Final answer:

To find the height of Rectangular Prism B, subtract Rectangular Prism A's volume from the total volume to get Prism B's volume (120 cubic feet), then divide by the product of its length and width. The height is 4 feet.

Explanation:

The question is about finding the height of Rectangular Prism B given that the solid figure it's part of (when combined with Rectangular Prism A) has a total volume of 200 cubic feet, and that Rectangular Prism A has a volume of 80 cubic feet. Considering volume calculations for rectangular prisms are done using length × width × height, we can find the height of Prism B by isolating height in the formula. Since Prism B has a length of 6 feet and a width of 5 feet, and we know the combined volume of both prisms, we first subtract the volume of Prism A from the total volume to find the volume of Prism B, which is 120 cubic feet (200 cubic feet - 80 cubic feet).

Volume of Prism B = 120 cubic feet. The formula for volume is then applied as follows:

Volume = Length × Width × Height

120 cubic feet = 6 feet × 5 feet × Height

Height = 120 cubic feet / (6 feet × 5 feet)

Height = 120 cubic feet / 30 square feet

Height = 4 feet.

Therefore, the height of Rectangular Prism B is 4 feet.

Answer:

kiki has $4.17 and jordan has $4.14 kiki has 0.03 more than jordan

Step-by-step explanation:

If you add up the numbers for kiki you get $4.17 and if you do the same for jordan with the numbers they gave you for him you get $4.14 then you just minus 4.17 and 4.14 and thats how you get 0.03.

Answer:

Kiki has $0.03 more than Jordan, meaning Kiki has more money.

Step-by-step explanation: It's simple! Add 2.48 + 1.69 = 4.17 (This is Kiki's total amount) And then add 3.05 + 1.09 = 4.14 (This is Jordan's total amount)

As we can see, Kiki has more money. To find the difference we simply do 4.17 - 4.14 = 0.03 (:

The quadrants II and IV in which (x,y) are located so that the condition xy < 0 is satisfied.

A quadrant is defined as an area contained by the x and y axes, which there are four quadrants in a graph.

For Quadrant  I : the value of x and y both are positive ( +,+ )

For Quadrant  II :  the value of x is negative and y is positive ( -,+ )

For Quadrant  III : the value of x is negative and y is negative ( -, - )

For Quadrant  IV : the value of x is positive and y is negative ( +, - )

To determine the quadrant(s) in which (x,y) is located so that the condition is satisfied.

⇒ xy < 0

When the value of x is negative and y is positive in Quadrant  II

So that the condition  xy < 0 is satisfied

When the value of x is positive and y is negative in Quadrant  IV

So that the condition  xy < 0 is satisfied

Hence, the quadrants II and IV in which (x,y) are located so that the condition xy < 0 is satisfied.

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Answer:

[tex]Each\ of\ other\ two\ experiments\ required\ 3\ test\ tubes.[/tex]

Step-by-step explanation:

[tex]Let\ each\ of\ other\ experiment\ requires\ x\ test\ tube\\\\Total\ number\ of\ test\ tubes\ needed=8\\\\Test\ tubes\ used\ in\ the\ experiments=sum\ of\ number\ of\ test\ tubes\ in\ each\ experiment\\\\Test\ tubes\ used\ in\ the\ experiments=2+x+x\\\\2+x+x=8\\\\2+2x=8\\\\Subtract\ 2\ from\ both\ sides\\\\2+2x-2=8-2\\\\2x=6\\\\divide\ both\ sides\ by\ 2.\\\\x=3[/tex]

[tex]Each\ of\ other\ two\ experiments\ required\ 3\ test\ tubes.[/tex]

The distance between the points C(-3,1) and D(5,6) is 10.3 units.

Step-by-step explanation:

Let us consider CD is a line segment.

The point C is (-3,1) and D is (5,6).

The Cartesian formula for line is used to find the length between the CD.

Distance between two points = [tex]\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex].

The points are (-3,1) and (5,6).

=[tex]\sqrt{(6-(-3))^2+(6-1)^2}[/tex].

=[tex]\sqrt{(6+3)^2+(6-1)^2}[/tex]

=[tex]\sqrt{9^2+5^2}[/tex].

=[tex]\sqrt{81+25}[/tex].

=[tex]\sqrt{106}[/tex].

=10.295 ≈ 10.3.

Distance between two points 10.3 units.

Answer:

The first statement.

Step-by-step explanation:

Because when you look at the July graph you can see that the highest number of miles is 15 and the lowest number of miles is 1 so the range is 15 - 1 = 14.

When you look at the August graph you can see that the highest number of miles is 13 and the lowest number of miles is 5 so the range is 13 - 5 = 8

So the range of the July month is greater than the range of the August month

Answer:

19.55

Step-by-step explanation:

21.25

- 1.7

_____

19.55

Answer:

9

Step-by-step explanation:

14/y=112/72

simplify 112/72 into 14/9

14/y=14/9

y=9

3.)

Variables:

New tablet cost (575),

Money already saved, (56),

Money saved per week(14w)

Write an Equation:

The amount of weekly money you need to earn must cover the leftover cost needed to buy the tablet, therefore:

money_needed - money_you_have = money_earned_per_week

575 - 56 = 14w

Solving:

575 - 56 = 14w

519 = 14w

37.071428 = w

37 weeks needed

You solve the other two on your own.

Answer:

Step-by-step explanation:

Answer:5/6

Step-by-step explanation:

So 1/3 + 1/2 turn them to equivalent denominators so 1/3 = 2/6

1/2 equals 3/6 . 3/6+2/6 is 5/6

Step-by-step explanation:

go to desmos.com and type the following on separate lines:

y=x+1{x≤-2}

y=2x-1{-2<x≤4}

y=3x+8{x>4}

Answer:

(12,10)

Step-by-step explanation:

Let the midpoint of the side opposite this vertex have coordinates B(a,b)

We have the centroid at C(8,7) and the vertex of the triangle at A(0,1).

The centroid divides AB internally in the ratio 2:1

We use the formula:

[tex](\frac{mx_2+nx_1}{m+n},\frac{my_2+ny_1}{m+n})[/tex]

where m:n=2:1 is the ratio of internal division.

We substitute the coordinates of A and B and the ratio to get:

[tex](\frac{2a+1*0}{2+1},\frac{2b+1*1}{2+1})[/tex]

This should simplify and give us the centroid.

[tex](\frac{2a}{3},\frac{2b+1}{3})=(8,7)[/tex]

This implies that:

[tex]\frac{2a}{3}=8,\frac{2b+1}{3}=7[/tex]

We solve for a and b

[tex]2a=24,2b+1=21[/tex]

[tex]a=12,b=10[/tex]

Therefore the midpoint of the side opposite this vertex is (12,10)

Answer: 11625.8

Step-by-step explanation:

The total amount in the account after 17 years, with an annual interest rate of 7.5%, is approximately $7420.50.

To calculate the amount in the account after 17 years, we use the formula for simple interest: Total future amount (with simple interest) = Principal + (Principal × Interest Rate × Time). In this case, the principal is $3400, the interest rate is 7.5%, and the time is 17 years. Plugging in these values, we get:

Total future amount = 3400 + (3400 × 0.075 × 17)

Calculating this, the total future amount in the account will be approximately $7420.50.

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The function g(x) is the function f(x) scaled down by a factor of 2/5, resulting in a vertical compression of the graph. Thus, the correct answer is A. The graph of g(x) is f(x)'s graph vertically compressed.

The function g(x) = 2/5 x2 is f(x) = x2 multiplied by a scalar factor of 2/5. This means that every y-coordinate in the graph of f(x) is scaled down by a factor of 2/5 to produce the corresponding y-coordinate in the graph of g(x). It does not flip the graph over the x-axis. Therefore, the graph of g(x) is simply the graph of f(x) compressed vertically. So, the correct answer is A. The graph of g(x) is the graph of f(x) compressed vertically.

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Answer:

  x = -37 7/15

Step-by-step explanation:

1. Find the terms with the variable. They are 4.3x on the left and 4.0x on the right.

2. Identify the term with the least coefficient*. It is 4.0x on the right.

3. Subtract that term from both sides of the equation.

  4.3x -4.0x +19.35 = 8.11 +4.0x -4.0x

  0.3x +19.35 = 8.11 . . . . . . simplify

4. Identify any constant term on the side of the equation with the variable. It is 19.35 on the left.

5. Subtract that constant from both sides of the equation.

  0.3x +19.35 -19.35 = 8.11 -19.35

  0.3x = -11.24 . . . . . . . simplify

6. Divide both sides of the equation by the coefficient of the variable. That coefficient is 0.3 in this equation.

  (0.3x)/0.3 = (-11.24)/0.3

  x = -37.466666... (repeating decimal)

__

If you like, you can express the solution as a mixed number:

  x = -11.24/0.30 = -1124/30 = -562/15

  x = -37 7/15

_____

You are expected to be able to do the math using the numbers in any form they might appear: integers, mixed numbers, fractions, decimals, scientific notation. You can convert the problem here to an integer problem by multiplying both sides by 100:

  430x +1935 = 811 +400x

The answer still has a fraction in it: x= -1124/30 = -37 7/15.

_____

* You subtract the term with the least coefficient so the variable term in the result has a positive coefficient. That may be desirable, but is not necessary. You can subtract either variable term to get the variable on one side of the equal sign. You have to pay attention to the resulting sign when you divide by the variable's coefficient.

Answer:

13.5

Step-by-step explanation:

Answer:

[tex]The~answer~for~this~question~is:135,000[/tex]

Step-by-step explanation:

[tex]15[/tex] × [tex]90=1350[/tex]

[tex]and,[/tex]

[tex]1350[/tex] × [tex]100=135,000[/tex]

[tex]It's~that~simple![/tex]

Answer:

B = R - M

Step-by-step explanation:

1. R = M + B       Subtract M

2.  R - M = B

the picture isn't clear, but my guess is.... c?

Answer:

a=1

-2a + 3 < 9 − 3a

5a − 4a + 6 < 8

2a + 3 > 10 − 3a

a=2

-4 + 3a + 8 < 16

14 + 5a < 12a + 1

3a − 2a + 1 > 2

Step-by-step explanation:

i did the test

Answer:

a=1

-2a + 3 < 9 − 3a

5a − 4a + 6 < 8

2a + 3 > 10 − 3a

a=2

-4 + 3a + 8 < 16

14 + 5a < 12a + 1

3a − 2a + 1 > 2

Step-by-step explanation:

i just did the test