Which of the following represents the sum of the series? 6 + 8 + 10 + 12 + 14 + 16 + 18 + 20 + 22 + 24 + 26

Tim would have to do 18 chores (2 chores 9 times or 1 chore 18 times) to be able to buy the video game.

Step-by-step explanation:

Step 1; Tim's parents will give him $3 for every two chores. This equals $1.50 for a single chore. He wants to save up $27 so that he can buy the video games he wants.

Step 2; The number of times he has to do the chores to be able to but the video game is a division between the money he wants to save up by the money he gets for the chores.

Number of 2 chores he needs to do     = Amount of money he wants to save up / money he gets for doing two chores

                                                                  = $27 / $3 = 9 times.

Number of single chores he has to do =Amount of money he wants to save up / money he gets for doing two chores

                                                                   $27 / $1.50 = 18 times

It's easier to figure it out when both fractions have the same denominator, so let's fix that:

17/40*15/15 is 255/600

8/15*40/40 is 320/600

Notice we are multiplying by a factor of 1 to get equivalent fractions

So 8/15 is bigger

Hope this helped!

8/15

when you divide it it comes out to be 0.533 repeating

but when you divide 17/40 it comes out to be 0.425

so .5 is larger then .4

Answer:

4

Step-by-step explanation:

6 - 2 = 4

Jake ate 2 less than 6 which is how many Harry ate.

Answer:

4

Step-by-step explanation:

the answer is 4 because 6 minus 2 would be 4 so the answer is four

The numbers are 37 and -18.

Step-by-step explanation:

Step 1:

Let the numbers be x and y. Given their sum = 19 and difference = 55. Form equations out of it.

⇒ x + y = 19 --------- (1)

⇒ x - y = 55 --------- (2)

Subtract eq(2) from eq(1)

⇒ 2x = 74

⇒ x = 37

Step 2:

Find y.

⇒ y = 19 - x = 19 - 37 = -18

The area under the standard normal curve corresponding to Z > -1.62 is approximately 0.9474.

The question asks for the area under the standard normal curve corresponding to Z > -1.62. Using standard normal distribution tables, we can find this area by finding the area corresponding to Z = -1.62 and subtracting it from 1. Since standard normal distribution tables provide the area to the left of the Z-score, we need to subtract the area from 1 to get the area to the right of the Z-score.

By looking up Z = -1.62 in the standard normal distribution table, we find the area to the left (or below) the Z-score is approximately 0.0526. Therefore, the area to the right (or above) the Z-score is approximately 1 - 0.0526 = 0.9474.

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Answer:

x=21

Step-by-step explanation:

Each measurment is multiplied by three, so 7 multiplied by 3 is 21

Answer:

9=1.375 10=1.625 11=3.3125 12=4.45

The Total number of students at the school is 1240.

The given ratio is 11 boys : 9 girls,

Let 11x = boys and

9x = girls.

As 124 more boys are there than girls, so

11x - 9x = 124.

2x = 124

x = 62

The actual number of boys = 11x = 11 × 62 = 682

The actual number of girls = 9x = 9 × 62 = 558

Total number of students at the school = 682 boys + 558 girls = 1240 students

Answer:

Helicopter have traveled  5.55 units of distance approximately  if it went directly from one location to the other.

Step-by-step explanation:

We are given the following in the question:

A traffic helicopter travels due north and then due east to get to the location at (-3,4) to the location at (7,13).

The attached image shows the path of helicopter.

Distance Formula:

[tex](x_1,y_1), (x_2,y_2)\\\\d = \sqrt{(x_2-x_1)^2 + (y_2-y_1)^2}[/tex]

Distance traveled by helicopter =

[tex]d((-3,4),(-3,13)) + d((-3,13),(7,13))\\\\=\sqrt{(-3+3)^2 + (13-4)^2} + \sqrt{(7+3)^2 + (13-13)^2}\\= 9+10\\= 19 \text{ units}[/tex]

If the helicopter goes directly:

[tex]d((-3,4),(7,13))\\\\=\sqrt{(7+3)^2+(13-4)^2}\\\approx 13.45 \text{ units}[/tex]

Difference in distances =

[tex]19 - 13.45 = 5.55\text{ units}[/tex]

Thus, helicopter have traveled  5.55 units of distance approximately  if it went directly from one location to the other.

Answer:

i had this question in a quiz on edge and got a 100% on the quiz

here is your answer

Step-by-step explanation:

Answer:

x^2-25

Step-by-step explanation:

rewrite 25 as 5^2

x^2-5^2

since both terms are perfect squares, factor using the difference of square s formula, a^2-b^2=(a+b)(a-b) where a=x and b=5

(x+5)(x-5)

plz mark me as brainliest if this helped :)

Answer:

[tex]\[(x+5)*(x-5)\][/tex]

Step-by-step explanation:

Given polynomial expression is [tex]\[x^{2}-25\][/tex]

[tex]\[=> x^{2}-5^{2}\][/tex]

This is of the form [tex]\[a^{2}-b^{2}\][/tex]

An expression of this form can be factorized as [tex]\[(a+b)*(a-b)\][/tex]

Here, a = x and b = 5.

Hence the factorized form of the given polynomial expression can be represented as the following product:

[tex]\[(x+5)*(x-5)\][/tex]

Answer:

If you're supposed to be multiplying the first four numbers, the answer is going to be 13.

Step-by-step explanation:

Part a) Wayen's saving before he spend $28 is $30

Part b) Steph's saving after she spend $28 is $8

Step-by-step explanation:

Ratio of Wayen's saving to stephs saving: 5:5

After spending $28

Ratio of Wayen's saving to Stephs saving: 1:4

We can write ratio as:

[tex]\frac{W}{S}=\frac{5}{6}\\Cross\,\,multiply\\6W=5S\,\,eq(1)[/tex]

After spending $28

[tex]\frac{W-28}{S-28}=\frac{1}{4}\\Cross\,\,multiply\\4(W-28)=S-28\,\,eq(2)[/tex]

Part a) Find Wayen's saving before he spend $28

Using both equations to find value of W

Putting value of S from eq(1) into eq(2)

6W/5=S

[tex]4W-112+28=S\\4W-84=S\\Putting\,\,value\,\,of\,\,S\\4W-84=\frac{6W}{5}\\ Multiply\,\,both\,\,sides\,\,by\,\,5\\20W-420=6W\\20W-6W=420\\14W=420\\W=420/14\\W=30[/tex]

So, Wayen's saving before he spend $28 is $30

Part b) Find Steph's saving after she spend $28

First Steph's saving before spending $28 is:

[tex]S=\frac{6W}{5}\\S=\frac{6*30}{5} \\S=36[/tex]

Now, After spending $28

S-28 we get:

36-28= $8

So, Steph's saving after she spend $28 is $8

Keywords: Ratio and proportion

Learn more about Ratio and proportion at:

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4,560

10 to the 2nd power is = 100

so 100 × 45.6 =

Answer:

y = - 4.4

Step-by-step explanation:

from the question

y = -6.6

x = 9.9

y∝ x

y = kx ..... where k is introduced as a constant of proportionality

solve for k

y=-6.6 and x = 9.9

we have,

-6.6 = k × 9.9

-6.6 = 9.9k

divide both sides by 9.9

-6.6/ 9.9 = 9.9k/9.9

-0.667= k

therefore k = - 0.667

now, find y when x = 6.6

from the equation y = kx

y = -0.667 × 6.6

y = - 4.4

Answer:

-4.4

Step-by-step explanation:

x : y

9.9 : -6.6

6.6 : y

9.9/-6.6 = 6.6/y

y = 6.6 × -6.6/9.9

y = -4.4

Answer:

a

Step-by-step explanation:

the x of each point in order from least to greatest makes up the domain

Answer: y = 3/4 + 8.25

Step-by-step explanation:

1. You already know the slope, 3/4, and the coordinates (-7,3). We could plug these into a y=mx+b equation: 3=3/4(-7) + b

2. Next you need to solve for b. Then you get your answer of 8.25. (I attached my work for that)

3. You plug in 8.25 as your y-intercept or b: y=3/4 + 8.25

The combination is solved and the number of ways of choosing the contestants is 10

The number of ways of selecting r objects from n unlike objects is given by combinations

ⁿCₓ = n! / ( ( n - x )! x! )

where

n = total number of objects

x = number of choosing objects from the set

Given data ,

Out of the 7 people in the front row, we need to choose 3 people to be contestants, and we want to count the number of ways that both you and your friend are chosen.

Since we are choosing 3 people, there are 3 positions to be filled. We can think of this as a combination problem, where we need to choose 2 people out of the 5 remaining people in the front row, to fill the two remaining positions after you and your friend are chosen.

The number of ways to choose 2 people out of 5 is given by the combination formula:

C(5, 2) = 5! / (2! (5 - 2)!) = 10

Hence , there are 10 ways to choose you and your friend, and then choose two additional people to fill the remaining positions

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Answer:

Step-by-step explanation:

The roots are the values of x that make y=0.

  0 = -16x^2 +4x = -4x(4x -1)

The values of x that make the factors zero are solutions to this equation:

  x = 0

  x = 1/4 . . . . . makes the factor (4x-1) equal to zero

The roots of the equation are x=0 and x=1/4.

__

Since y is height and x is time, when y=0, the frog is on the ground. The roots, then, are the times when the frog is on the ground.

The smaller root is the time when the frog leapt.

The larger root is the time when the frog landed.

The roots of the equation y = -16x² + 4x are x = 0 and x = 1/4,

The given equation y = -16x² + 4x models the height y of the frog as a function of time x in seconds.

To find the roots of this equation when y = 0, we need to solve:

0 = -16x² + 4x

This is a quadratic equation.

Quadratic equations can be solved by factoring, completing the square, or using the quadratic formula.

In this case, factoring is straightforward:

0 = x(-16x + 4)

This gives us two solutions

x=0

x=4/16=1/4

The roots are x = 0 and x = 1/4 seconds.

Interpreting the Roots

Answer:

4/15 or in decimal form its 0.26

Step-by-step explanation:

Answer:

Step-by-step explanation:

0.26

Answer:

24

Step-by-step explanation:

18-6=12

24=12x2

12-24= -12

Answer: 74beats/per minute

Step-by-step explanation:

Divide 518 by 7

Answer:

Yumiko should multiply the other equation by 3.

If she adds the two equations she would be left with the variable 'x'.

Step-by-step explanation:

Given the two equations are as follows:

[tex]$ 2x - 3y = 12 \hspace{5mm} \hdots (1) $[/tex]

[tex]$ 5x + 6y = 18 \hspace{5mm} \hdots (2) $[/tex]

It is given that she multiplies the first equation by 6. Therefore, (1) becomes

[tex]$ 12x - 18y = 72 \hspace{15mm} \hdots (a) $[/tex]

Now, note that the sign of the variable 'y' is negative. So, if we make the co-effecient of 'y' equal in both the cases, add them it would result in the elimination of the variable 'y'.

The co-effecient of y in Equation (2) is 6. To make it 18 like it is in Equation (1), we multiply throughout by 3.

Therefore, Equation (2) becomes:

[tex]$ 15x + 18y = 54 \hspace{5mm} \hdots (b) $[/tex]

Now, we add Equation (a) and Equation (b).

[tex]$ \implies 12x - 18y + 15x + 18y = 72 + 54 $[/tex]

[tex]$ \implies 27x = 126 $[/tex]

Factor: 3

Equation: 27x = 126

Answer:

1/4  4/16 8/32 16/64

Step-by-step explanation:

Answer:

a simplified fraction is 1/4

Step-by-step explanation:

2/8 (divided by) 2/2= 1/4

Answer:1 and 2:4

Step-by-step explanation: Because  if it's fair you have  a 50 percent chance of heads or tails. and if u write it as a ratio you would get 2_4 you will most likely learn this in 7th grade or 6th

Use the formula c = λν to determine wavelength

299792458=689.46λ

434822.1188=λ

Hope this helped!

Answer:

try different keywords

Step-by-step explanation:

Answer: 54.4°

Step-by-step explanation:

If the spotlight is mounted 7.3 meters high, its height will be 7.3meters.

If A is 10.2 meters from the base of the pole, the base of the pole to the parking area will be 10.2meters

The angle of the depression will be facing the base directly therefore, the base will be the opposite of the triangle formed and the height of 7.3m will be the adjacent.

To get the depression angle, we use the trigonometry identity SOH, CAH, TOA

Since we have opposite and adjacent, we will use "TOA" which means

Tan theta = Opposite/Adjacent

Opposite = 10.2m Adjacent = 7.3

Tan theta = 10.2/7.3

Tan theta = 1.39

theta = arctan 1.39

Theta = 54.4°

The angle of depression that the spotlight should aim at is 54.4°

To find the angle of depression for the spotlight to illuminate point A, one takes the inverse tangent of the ratio of the height of the pole to the distance from the pole to point A (7.3 meters / 10.2 meters).

The student has asked to determine the angle of depression that a spotlight should be aimed at to illuminate a specific point on the ground. To find this angle, we use trigonometry, specifically the tangent function, which relates the opposite side (the height of the pole) to the adjacent side (the distance from the base of the pole to point A).

The tangent of the angle of depression (θ) is equal to the opposite side divided by the adjacent side. That is, tan(θ) = height / distance = 7.3 meters / 10.2 meters.

Using a calculator, the angle of depression θ can be found by taking the inverse tangent (or arctan) of 7.3/10.2. Therefore, θ = arctan(7.3/10.2).

Once you calculate this value, you will have the angle of depression at which to aim the spotlight to illuminate point A.

Answer:

b= 8.5

Step-by-step explanation:

To find b, subtract 4.1 to both sides.

12.6= b+4.1

- 4.1      -4.1

8.5= b

Answer:

7.5 = b

Step-by-step explanation:

12.6 - 4.1 = b + 4.1 - 4.1

8.5 = b