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3 years ago

If the radius of a circle is increased by a factor of 5, the area increases by a factor of:

Mathematics

1 answer:

Darya [45]3 years ago

7 0

The area will be increased by 25. Option C

Step-by-step explanation:

Given,

The radius of a circle is increased by 5.

To find how much the area will be increased.

Let us take,

The original radius of the circle is = r

The original area = πr²

Again,

After increasing the radius = 5r

Then the area will be = π(5r)² = 25πr²

= 25( original area)

Hence,

The area will be increased by 25.

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Ostrovityanka [42]

Answer:

its b

Step-by-step explanation:

5 0

3 years ago

A school baseball team raised $810 for new uniforms.Each player sold 1 book of tickets.There were 10 tickets in a book and each

Leviafan [203]

Answer:

The school baseball team sold 270 tickets

Step-by-step explanation:

Step 1

Identify the total amount of tickets sold by each player;

1 player=1 book of tickets

But 1 book=10 tickets

Step 2

Express the total cost of ticket sales per book as follows;

total cost=cost per ticket×number of tickets per book

where;

cost per ticket=$3

number of tickets per book=10

replacing;

total cost=(3×10)=$30

Step 3

Using the expression below, solve for the number of tickets sold

Total amount raised=price per ticket×number of tickets sold

where;

total amount raised=$810

price per ticket=$3

number of tickets sold=n

replacing;

810=3×n

3 n=810

n=810/3=270

n=270

The school baseball team sold 270 tickets

5 0

3 years ago

4(x+9)=8x-7<br> Solve for x

valentina_108 [34]

Answer:

x = 10.75

Step-by-step explanation:

4(x+9)=8x-7

Step 1: Distribute the 4 to the x and 9

4 * x = 4x

4 * 9 = 36

We now have 4x + 36 = 8x - 7

Step 2: add 7 to both sides

36 + 7 = 43

-7 + 7 cancels out

We now have 4x + 43 = 8x

Step 3 subtract 4x from both sides

4x - 4x cancels out

8x - 4x = 4x

We now have 4x = 43

step 4 divide both sides by 4

4x / 4 ( the 4s cancel out and we're left with x )

43/4 = 10.75

We're left with x = 10.75

3 0

3 years ago

8..................................

ser-zykov [4K]

Answer:

The answer is $2x^{3}y^{-2}\sqrt{6}$

Step-by-step explanation:

∵ √24 = 2√6

∵ $\sqrt{x^{6}}=(x^{\frac{1}{2}})^{6}=x^{3}$

∵ $\sqrt{y^{-4}}=(y^{\frac{1}{2}})^{-4}=y^{-2}$

∴ $\sqrt{24x^{6}y^{-4}}=2x^{3}y^{-2}\sqrt{6}$

5 0

3 years ago

How would you go on dividing 7/893

love history [14]

Answer:

0.00783874

Step-by-step explanation:

7/893= 0.00783874

I just put it in the calculator

3 0

3 years ago