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3 years ago

Find the circumference of a circle with an area of 201.06 square centimeters. PLEASE SHOW WORK PLEASE

1 answer:

5 0

Area is pi r squared=201.06
R squared=201.06/pi
R=square root of 201.06/pi
D=2(square root of 201.06/pi)
Pi d=circumference

Answer=50.265

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Evaluate the expression when x = 4 and y=-5. -5y+x

Maru [420]

Answer:

$29$

Step-by-step explanation:

Step 1: Set x to 4 and set y to -5

$-5y + x$

$-5(-5) + (4)$

$25 + 4$

$29$

Answer: $29$

8 0

3 years ago

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Blababa [14]

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2 years ago

19. For livesh's Model A rocket, he uses the equation h=-490^2+ 1120t. When is the height of the Model A rocket 640 centimeters?

Nadusha1986 [10]

Answer:

t = 1.143 s

Step-by-step explanation:

The equation he uses to model the height of the rocket in cm, as function of time is

h(t) = -490 t^2 + 1120t

We can plot this equation using a graphing tool

Please, see attached picture

The rocket reaches his maximum height (640 cm) at

t = 1.143 s

5 0

2 years ago

Please answer this correctly

maria [59]

Answer:

The total weight would be 5 lbs 12 oz.

Step-by-step explanation:

First, combine the ounces:

13 + 15 = 28 ounces

Next, convert that into pounds and ounces.

28 oz = 1 lb + 12 oz

Finally, add the weight back to the 4 lb.

1 lb + 4 lb + 12 oz = 5 lb + 12 oz

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3 years ago

Find the size of angle XZY Give your answer to 1 decimal place 15cm 6cm

Natali [406]

Answer:

The equation would be 6^ + b^ = 15^

First we bring each number to the power of two, 6^ = 36, and 15^ = 225

Then we subtract 36 from 225 and we get 189.

Then we "Square root" 189 because of the 2nd power on top of B

The correct answer is 13.8

I hope this helps :)

STAY SAFE!! :D

7 0

2 years ago