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4 years ago

7

The French club is holding a car wash fundraiser. They are going to charge $20 per car, and expect between 30 and 100 cars. Iden

tify the independent and dependent quantity in the situation, and find reasonable domain and range values.

1 answer:

elixir [45]4 years ago

6 0

Answer:

They will make between 600 and 2000 dollars.

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Sophia and Tyler are running around a 400-meter track. They start running from the same place, at the same time. Sophia runs at

Wittaler [7]

Sophia answer will be 7 more laps repeat 7 more laps

8 0

4 years ago

F(x)=4x squared −7x+7, Find f(2)

Lana71 [14]

Answer: 9

Step-by-step explanation:

4x²-7x+7 f(2)=4*(2)^2-7(2)+7=16-14+7=9

7 0

3 years ago

A fair coin is flipped twelve times. What is the probability of the coin landing tails up exactly nine times?

seraphim [82]

Answer:

$P\left(E\right)=\frac{55}{1024}$

Step-by-step explanation:

Given that a fair coin is flipped twelve times.

It means the number of possible sequences of heads and tails would be:

2¹² = 4096

We can determine the number of ways that such a sequence could contain exactly 9 tails is the number of ways of choosing 9 out of 12, using the formula

$nCr=\frac{n!}{r!\left(n-r\right)!}$

Plug in n = 12 and r = 9

$=\frac{12!}{9!\left(12-9\right)!}$

$=\frac{12!}{9!\cdot \:3!}$

$=\frac{12\cdot \:11\cdot \:10}{3!}$ ∵ $\frac{12!}{9!}=12\cdot \:11\cdot \:10$

$=\frac{1320}{6}$ ∵ $3!\:=\:3\times 2\times 1=6$

$=220$

Thus, the probability will be:

$P\left(E\right)=\frac{n\left(E\right)}{n\left(S\right)}$

$=\frac{220}{4096}$

$=\frac{55}{1024}$

Thus, the probability of the coin landing tails up exactly nine times will be:

$P\left(E\right)=\frac{55}{1024}$

4 0

3 years ago

What is the first step in solving the quadratic equation x2 – 40 = 0?

Sonbull [250]

Answer:

x=20

Step-by-step explanation:

1-reoder the terms

2-Move constant to the right

3-dive both sides

just hit the image and you will get a representation on how to do it

8 0

1 year ago

Use an algebraic equation to find the measure of each angle that is represented in terms of x.

yawa3891 [41]

Answer:

12x-17=139

8x+35=139

Step-by-step explanation:

The angles are vertical angles which means they are equal

12x-17 = 8x+35

Subtract 8x from each side

12x -8x-17 = 8x-8x+35

4x -17 = 35

Add 17 to each side

4x - 17 +17 = 35+17

4x = 52

Divide each side by 4

4x/4 = 52/4

x =13

12x-17 = 12(13) -17 = 156-17 =139

8x+35 =8(13) +35=104+35=139

4 0

3 years ago