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Alenkinab [10]
4 years ago
15

Sphere A has a radius of 24 centimeters, and sphere B has a diameter of 42 centimeters. The radius of sphere A is multiplied

Mathematics
1 answer:
Eddi Din [679]4 years ago
7 0

Answer:

1.75

Step-by-step explanation:

The radius of Sphere A = 24 centimeters

The radius of sphere B = 42 centimeters

 \text{Radius of Sphere B} \div \text{Radius of Sphere A}=42 \div 24\\=1.75

Therefore, The radius of sphere A is multiplied  by 1.75 to produce the radius of sphere B

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user100 [1]

Answer:

5 * 2 is 10 + 5 and then 15 * 2 + 15 45 * 2 + 45

Step-by-step explanation:

times it by to add that number

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Renee has a total of 12 cookies in chocolate chip and peanut butter, C + P = 12. The number of chocolate chip cookies is three t
Reika [66]

Answer:

Renee has 9 Chocolate chip cookies and 3 peanut butter cookies.

Step-by-step explanation:

This is a system of equations:

C + p = 12

C = 3P

All you need to do is substitute C for 3P in the first equation.

C + P = 12

3P + P = 12

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Divide both sides by 4

4P/4 = 12/4

P = 12/4

P = 3

Now, substitute P for 3 in the first equation.

C + P = 12

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C + 3 - 3 = 12 - 3

C = 12 - 3

C = 9

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3 years ago
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Suppose that the population density of a certain area is 80 people per square mile. If about 440,000 people live in this area, w
Zina [86]

The answer is B)  5,500 mi^2

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finlep [7]
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8 0
3 years ago
a rectangle is 8cm longer then it is wide, and it’s area is 153cm^2. Find the dimensions of the rectangle.
Stolb23 [73]

Answer:

Width of 9cm and length of 17cm.

Step-by-step explanation:

To calculate an area of a rectangle, use the formula A=l*w. We know the length is 8cm longer than the width. So l = 8 + w. So the area is A= (8+w)*w.

We also know the area is 153. Substitute this value for A and solve.

153 = (8+w)(w)\\153 = 8w+w^2\\w^2+8w-153 = 0

To solve the quadratic, use the quadratic formula:

\frac{-b+/-\sqrt{b^2-4ac} }{2a}

Here a=1, b=8 and c=-153.

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Since w=9 or w=-17, substitute this value for w in l= 8+w to find l.

l = 8+9 = 17

or

l=8+-17 = -9

Since length cannot be positive, it must be l=17 and w=9.

8 0
3 years ago
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