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3 years ago

Radius of 8 find the area?

Mathematics

1 answer:

sergejj [24]3 years ago

5 0

C= πr²
C= 3.14×8²
C=3.14×64
C=200.96

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Solve the perfect binomial (3x+4)(3x+4)

Svetradugi [14.3K]

Answer:

9x2+24x+16

Step-by-step explanation:

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3 years ago

HELP MEH!!! question:<br> A snail travels 10cm in 4 minutes. at this rate:

Aloiza [94]

Answer:

In 8 min it will travel 20

Step-by-step explanation:

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3 years ago

4. Ariel loves to go to baseball games. This season she has already attended 23 New York Ducks games. If

san4es73 [151]

Answer: She attended to 7 weekday games.

Step-by-step explanation:

Let's denote our variables as:

Wd = number of weekday games that she attended.

We = number of weekend games that she attended.

We know that in total, she attended to 23 games, so we have:

Wd + We = 23.

"If Ariel attended nine more weekend games than weekday games" can be written as:

We = Wd + 9.

Then we have the system of equations:

Wd + We = 23.

We = Wd + 9.

The first step would be to replace the second equation into the first one, as:

Wd + We = 23.

Wd + (Wd + 9) = 23

Now we can solve this for Wd.

2*Wd + 9 = 23

2*Wd = 23 - 9 = 14

Wd = 14/2 = 7

She attended to 7 weekday games.

And:

We + 7 = 23

We = 23 - 7 = 16

She attended at 16 weekend games.

6 0

4 years ago

2/3 divided by 3 halppppopp

Kitty [74]

The answer is 2/9 in lowest terms.

In decimal form its 0.222222

7 0

3 years ago

Read 2 more answers

A house number is displayed on a plaque in the shape of a regular 7-sided polygon. The area of the plaque is 70 squared inches.

Svetllana [295]

Answer:

The perimeter of the plaque is 28 inches.

Step-by-step explanation:

Given : A house number is displayed on a plaque in the shape of a regular 7-sided polygon. The area of the plaque is 70 squared inches. The perpendicular distance from a side to the center is 5 inches to the nearest inch.

To find : What is the perimeter of the plaque?

Solution :

The 7-sided polygon can be divided into seven triangles whose height, h is equal to the perpendicular distance from each side to the center.

The base of each triangle is equal to the length of a side, s.

The area of each triangle is $A=\frac{1}{2}\times s\times h$

The area of the whole polygon is $A_p=\frac{1}{2}\times 7s\times h$

Now, the perimeter of a regular 7-sided polygon is $P=7s$ .

Substitute in area,

$A_p=\frac{1}{2}\times P\times h$

We have given, $A_p=70\ in^2 and h=5\ in$

$70=\frac{1}{2}\times P\times 5$

$P=\frac{70\times 2}{5}$

$P=28$

The perimeter of the plaque is 28 inches.

3 0

4 years ago