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RSB [31]
2 years ago
13

Evelyn has a summer babysitting job that pays $12 per hour. She wants to know how many hours she has to babysit to afford a new

bike. The bike she wants costs $120.
Mathematics
1 answer:
Alja [10]2 years ago
3 0

Answer:

10

Step-by-step explanation:

You just gotta do 120/12 which is 10

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Peg conducted a survey of four school cafeterias to find the number of students who like sandwiches for lunch. The results of he
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brailiest?? :))

Step-by-step explanation:

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3 years ago
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What's the solution to the system of equations below. <br><br><br><br><br>Hurry please!!!​
tatiyna

Answer:

infinatly many solutions

Step-by-step explanation:

x can equal anything and still be correct.

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3 years ago
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A certain forest covers an area of 2600 km2. Suppose that each year this area decreases by 7.75%. What will the area be like aft
kakasveta [241]

Answer:

After 15 years, the area will be of 775.3 km²

Step-by-step explanation:

The equation for the area of the forest after t years has the following format.

A(t) = A(0)(1-r)^{t}

In which A(0) is the initial area and r is the yearly decrease rate.

A certain forest covers an area of 2600 km2.

This means that A(0) = 2600

Suppose that each year this area decreases by 7.75%.

This means that r = 0.0775

So

A(t) = 2600(1-0.0775)^{t}

A(t) = 2600(0.9225)^{t}

What will the area be like after 15 years?

This is A(15)

A(t) = 2600(0.9225)^{t}

A(15) = 2600(0.9225)^{15} = 775.3

After 15 years, the area will be of 775.3 km²

3 0
3 years ago
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X^2-y^2=3y in polar form
Assoli18 [71]

Answer:

Step-by-step explanation:

put x=r cos θ

y=r sin θ

r²cos²θ-r²sin²θ=3rsin θ

r²(cos²θ -sin²θ)=3r sin θ

r²cos 2θ=3rsinθ

r cos 2θ=3 sin θ

r=3sec 2θ sin θ

5 0
3 years ago
A swimming pool is in the shape of a right triangle. One leg has a length of 10 feet and one leg has a length of 15 feet. Estima
sasho [114]

Answer:

5√13 = c  OR 18. 0

Step-by-step explanation:

Using the Pyhtagorean Theorem, we will solve for x (in this case our hypothenuse)

a2 + b2 = c2

10(square) + 15(square)= c2  .....10*10 = 100  and   15* 15= 225

100 + 225 = c2

325= c2

√325 = c

5√13 = c  OR 18. 0

5 0
3 years ago
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