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3 years ago

How do you find the perimeter

Mathematics

1 answer:

lukranit [14]3 years ago

4 0

The perimeter is 86 m.

When you add the 18 with the 11, you get the length of the bottom side, which is 29. When you add the nine and the 6, you get the length of the left side, which is 15. Now add everything together.

18 + 6 + 11 + 9 + 29 + 15 = 86 m

Hope I helped. Good luck!! : )

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3 years ago

A water storage tank is in the shape of a hemisphere (half a sphere). If the radius is 20 ft, approximate the volume of the t

otez555 [7]

Answer:

The approximate volume of the tank is $V=16,747\ ft^{3}$

Step-by-step explanation:

we know that

The volume of a hemisphere (water storage tank) is equal to

$V=\frac{4}{6}\pi r^{3}$

we have

$r=20\ ft$

assume

$\pi =3.14$

substitute

$V=\frac{4}{6}(3.14)(20)^{3}$

$V=16,747\ ft^{3}$

7 0

3 years ago

Principal Lopez asked her 500 students to vote on the school's annual gift. 300 students voted to donate a telescope for the sci

Maksim231197 [3]

Using the percentage concept, it is found that 60% of the students voted to donate a telescope.

<h3>What is a percentage?</h3>

The percentage of an amount a over a total amount b is given by a multiplied by 100% and divided by b, that is:

$P = \frac{a}{b} \times 100\%$

In this problem:

The total amount is the number of students, which is of b = 500.

300 voted to donate, hence a = 300.

The <em>percentage </em>is given by:

$P = \frac{300}{500} \times 100\% = 60\%$

60% of the students voted to donate a telescope.

More can be learned about the percentage concept at brainly.com/question/10491646

5 0

1 year ago

For which value of a does the following system of equations have no solution? -x+6y=7 , -5x+10ay=32

dlinn [17]

Remark

If the lines are parallel, there are no solutions to the system of equations. Start with the equation you know the most about.

x + 6y = 7 Subtract x from both sides

x - x + 6y = 7 - x Combine

6y = - x + 7 Switch and divide by 6

y = -x / 6 + 7/6

The general equation for a line is y = mx + b where m is the slope of the line.

m = - 1/6

================

Now look at the second equation

10ay - 5x = 32 Add 5x to both sides

10ay = 5x + 32 Divide by 10a

y = (5/10a)x + 32/(10a)

===============

Now you must make

5/10a = - 1/6 Cross Multiply

5* 6 = - 10a * 1

30 = - 10a Divide by - 10

a = 30 / - 10

a = - 3

So these two equations will have no solution when a = - 3

8 0

2 years ago

$9.40 per hour times 22 hours round to the nearest cent

REY [17]

Answer:

The answer is 206.8. But you want me to round to the nearest cent so the real answer is $207.00

Step-by-step explanation:

4 0

3 years ago