Ask question

Ask question

All categories

3 years ago

10

Paula has some bricks to make a square patio. She knows she has enough bricks to cover 50 square feet. She needs to find how lon

g to make the patio. How long should Paula make the patio? Round your answer to the nearest tenth of a foot.
A. 8.9 ft
B. 8.2 ft
C. 7.9 ft
D. 7.1 ft

1 answer:

Scilla [17]3 years ago

3 0

A square 7 is about 7 feet on the side is 49 square feet so d

You might be interested in

The radius of a sphere is increasing at a rate of 3 mm/s. How fast is the volume increasing when the diameter is 60 mm

mina [271]

Answer:

The volume is increasing at a rate of 33929.3 cubic millimeters per second.

Step-by-step explanation:

Volume of a sphere:

The volume of a sphere of radius r is given by:

$V = \frac{4\pi r^3}{3}$

In this question:

We have to derivate V and r implicitly in function of time, so:

$\frac{dV}{dt} = 4\pi r^2\frac{dr}{dt}$

The radius of a sphere is increasing at a rate of 3 mm/s.

This means that $\frac{dr}{dt} = 3$

How fast is the volume increasing when the diameter is 60 mm?

Radius is half the diameter, so $r = 30$ . We have to find $\frac{dV}{dt}$ . So

$\frac{dV}{dt} = 4\pi r^2\frac{dr}{dt}$

$\frac{dV}{dt} = 4\pi (30)^2(3) = 33929.3$

The volume is increasing at a rate of 33929.3 cubic millimeters per second.

5 0

3 years ago

I Need The Answer Plz!!

Ivan

Answer:

DE

Step-by-step explanation:

See how DE cuts through half? We shouldn't be too accurate for the midsegment.

5 0

3 years ago

A $380 television cost $411.35 after tax is added. What is the percentage of the tax

expeople1 [14]

Answer:

The tax percentage is 8.25 percent

Step-by-step explanation: After multiplying multiple tax percentages I found that 8.25 was the right tax percentage.

Hope this helps.

4 0

3 years ago

What is the slope of the line that passes through the points ( − 1 , − 7 ) (−1,−7) and ( 1 , − 13 ) (1,−13)? Write your answer i

Paraphin [41]

Answer:

$y = -3x -10$

Step-by-step explanation:

Slope-intercept formula: $\frac{y_2-y_2}{x_2-x_1}$

Find slope of (−1, −7) and (1, -13)

$\frac{y_2-y_2}{x_2-x_1}\\\\\\frac{-13-(-7)}{1-(-1)}\\\\\\frac{-6}{2}\\\\\-3$

$y = mx + b$

$y = -3x +b$

$y = -3x +b\\-7 = -3(-1) + b\\-7 = 3 +b\\-3 -3\\-10 = b$

$y = -3x -10$

Hope this helps!

3 0

2 years ago

And ice cream company received an order of 1200 ice cream bars .the store will keep 140 to sell in their main store . The rest w

wlad13 [49]

Do 1200 minus 140 and then divide the answer by 20

7 0

3 years ago