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3 years ago

Marci is going to use tile to cover her terrace. How much tile does she need?

Mathematics

1 answer:

vfiekz [6]3 years ago

6 0

A 4by8 meter rectangle and half of a 8m circle

4*8+(16p/2)

32+8p

A=(32+8p)m^2

A=57.13 m^2 (to nearest hundredth of a m^2)

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Bob can paint a fence in 5 hours, and working with Jen, the two of them painted a fence in 2 hours. How long would it have taken

irakobra [83]

Answer: $\frac{10}{3}$

Step-by-step explanation:

Given

Bob can Paint a fence in 5 hr

so full job can be done in 5 hr

in 1 hr $\frac{1}{5}$ job is done

suppose Jen done the work in x hr

so in 1 hr $\frac{1}{x}$ part of job is done

Also if they combine they can do the job in 2 hr

so in 1 hr $\frac{1}{2}$

so $\frac{1}{5}+\frac{1}{x}=\frac{1}{2}$

$\frac{1}{x}=\frac{1}{2}-\frac{1}{5}$

$\frac{1}{x}=\frac{5-2}{10}$

$x=\frac{10}{3} hr$

3 0

3 years ago

–6(2 + a) = –48 I need help please.

Ksenya-84 [330]

Answer:

a = 6

Step-by-step explanation:

–6(2 + a) = –48

-12 - 6a = -48

-6a = -36

a = -36 ÷ - 6

a = 6

6 0

3 years ago

Read 2 more answers

Coach Manzer drove 350 miles in 5 hours and 455 miles in 6.5 hours. What is the constant rate of change?

Sergio039 [100]

Answer:

Step-by-step explanation:

It gives you two data points, (5, 350) and (6.5, 455). Constant rate of change also means slope, and the formula for slope is (y(1)-y(2))/(x(1)-x(2)). If you plug in the data points you got for this, you get (350-455)/(6.5-5), which is equal to 105/1.5. Drop that in a calculator and you get 70.

3 0

3 years ago

A cylinder with a radius of 12 cm and a height of 20 cm has the same volume as a cone with a radius of 8 cm. What is the height

ZanzabumX [31]

It has a height of 135

3 0

3 years ago

Read 2 more answers

What is the best estimate for the answer of 47.82 + 74.31

Marysya12 [62]

Answer:

122

Step-by-step explanation:

Round the two numbers to the nearest whole number and add.

8 0

2 years ago