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3 years ago

6

Lin and Tyler are drawing circles. Tyler’s circle has twice the diameter of Lin’s circle Tyler thinks that his circle will have

twice the area of Lin’s as well do you agree with Tyler

1 answer:

Contact [7]3 years ago

6 0

Tyler is wrong; his circle’ area will be 4 times bigger than Lin’s.
Tyler’s Diameter (D1)=2•D2
Lin’s Diameter (D2)
r=D/2
A= πr^2

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What are the number of roots in this equation? (x+7)(x-2)^2(x^2-4)(x+1)^4

koban [17]

Answer:

7

Step-by-step explanation:

because that's what I got

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3 years ago

the wholesale price for a pair of shoes is $5.50. A certain department store marks up the wholesale price by 40%. Find the price

Furkat [3]

EXPLANATION

Price of shoes = $5.50

Markup= 40%

Let's call x to the unknown final price.

The markup percentage relationship is given by the following formula:

$\text{Markup =( }\frac{Selling\text{ Price}-\text{Cost Price}}{\text{Cost Price}})\cdot100$

Replacing terms:

$\text{40}=(\frac{x-5.5}{5.5})\cdot100$

Multiplying both sides by 5.5:

$40\cdot5.5=(x-5.5)\cdot100$

Dividing both sides by 100:

$\frac{40\cdot5.5}{100}=x-5.5$

Adding 5.5 to both sides:

$(\frac{40\cdot5.5}{100})+5.5=x$

Simplifyng the fraction:

$2.2+5.5=x$

Adding numbers:

$\text{7}.7\text{ = x}$

Switching sides:

$x=7.7$

Answer: The final price of the shoes in the deparment store is $7.7

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1 year ago

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Vinil7 [7]

Step-by-step explanation:

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2 years ago

There are two right circular cylinders. The radius of the first cylinder is 4 centimeters, and its height is 5 centimeters. The

Lina20 [59]

Answer:

D. 9:1

Step-by-step explanation:

The formula for the volume of a cylinder is πr² · h (pi · radius² · height) (use 3.14 for pi).

The two right circular cylinders have the same height. The larger cylinder has a radius that is three times the size of the smaller radius.

4 · 3 = 12

However, in the equation for volume, the radius is squared. Because of this, the larger cylinder is 9 times the size of the smaller cylinder because 3² = 9.

You can check your work by finding the volume of the two cylinders using the volume formula πr² · h:

3.14 · 4² · 5 = 251.2

3.14 · 12² · 5 = 2,260.8

The cylinder with a radius of 12 cm is 9 times the size of the cylinder with a radius of 4 cm.

2.260.8 ÷ 9 = 251.2

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3 years ago

Solve by the substitution method. 8x + 9y=56 -9x + y = 26

Nikolay [14]

Answer:

(-2,8)

Step-by-step explanation:

8x + 9y=56

-9x + y = 26

---------------------------------------------------------------------------------

-9x + y = 26

+9x = +9x

y = 9x + 26

---------------------------------------------------------------------------------

8x + 9(9x+26) = 56 <-- substitute for y from above

8x + 81x + 234 = 56

89x + 234 = 56

- 234 = - 234

89x = - 178

x = -2 <--- we got the x value!!

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-9x + y = 26

-9 (-2) + y = 26 <-- substitute for x from above

18 + y = 26

- 18 = - 18

y = 8 <-- we got the y value!!

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3 years ago