3 years ago

On Saturday, Wendy babysat for

Mathematics

1 answer:

Degger [83]3 years ago

4 0

Answer:

9(4/3)

Step-by-step explanation:

you add up the hours of each of the girls so, 3(1/2)+4(1/3)+2

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A company makes steel rods shaped like cylinders. Each rod has a radius of 4 centimeters and a height of 20 centimeters. If the

Tamiku [17]

(One steel rod’s volume) = 3.14 x 4^2 x 20

= 1004.8cm^3

(Used steel) / (One steel rod’s volume) =

(Made steel rod’s number)

The answer is 28

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1 year ago

Find the arc length of the partial circle.

nalin [4]

Answer:

1/2 pi

Step-by-step explanation:

This is 1/4 of a circle

Find the circumference and multiply by 1/4

1/4 C

1/4 ( 2*pi*r) where r is the radius

The radius is 1

1/2 pi*1

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3 years ago

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Tory was shopping for a new purse. The purse she wanted was $45. Tory

weeeeeb [17]

Answer:

20% off 45.00 is 36.00

Step-by-step explanation:

The difference is $9.00

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2 years ago

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a boat travels 252 miles in 13 hours (with a constant speed) How much time will it take traveling 279 miles?

Ilya [14]

Answer: 14.4 h

The speed is : $v=\frac{d}{t} =\frac{252}{13} =19.46$ $miles/h\\$

The time it takes to travel 279 miles :

$t'=\frac{d}{v} =\frac{279}{19.46} =14.4 hours$

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2 years ago

X = -2y + 300 3y = 800 - 4x

devlian [24]

Answer:

Step-by-step explanation:

$\left\{\begin{array}{ccc}x=-2y+300&(1)\\3y=800-4x&(2)\end{array}\right\\\\\text{Substitute (1) to (2):}\\\\3y=800-4(-2y+300)\qquad\text{use the distributive property:}\ a(b+c)=ab+ac\\\\3y=800+(-4)(-2y)+(-4)(300)\\\\3y=800+8y-1200\\\\3y=8y-400\qquad\text{subtract}\ 8y\ \text{from both sides}\\\\-5y=-400\qquad\text{divide both sides by (-5)}\\\\y=80\\\\\text{Put it to (1):}\\\\x=-2(80)+300\\\\x=-160+300\\\\x=140$

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2 years ago

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