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3 years ago

Can you plz help me with this question thx :)

Mathematics

1 answer:

aalyn [17]3 years ago

7 0

Answer:

where is r

if you reply maybe you get answer in com.ents

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3 - 2(b - 2) = 2 - 7b<br> b =<br><br><br> Please show work

Firdavs [7]

3- 2b +4 = 2-7b
3+4 = 2 - 5b
7 = 2 -5b
5 = -5b
-5b /-5 = -1
b = -1

5 0

3 years ago

Please help on this question

son4ous [18]

The perimeter would be 48 feet

6 0

3 years ago

What do you get when you subtract 9 from b?

In-s [12.5K]

Answer:

4

step by step:

b-9=4

5 0

3 years ago

Find the area of the regular polygon

Y_Kistochka [10]

Answer:

A = 374.123 ft^2

Step-by-step explanation:

First, lets calculate the perimeter:

Perimeter (p) = side length (s) * number of sides (n)

$p = s * n$

$p = 12 * 6$

$p = 72$

Next, lets find the apothem, which is the shortest length from any side to the middle. It's like the radius in a circle, but more complicated.

Apothem (a) = side length (s) / ( 2 * tan(180/number of sides (n)) )

$a = \frac{s}{2 * tan (\frac{180}{n} )}$

$a = \frac{12}{2 * tan (\frac{180}{6} )}$

$a = \frac{12}{2 * \frac{\sqrt{3} }{3}}$

$a = \frac{12}{\frac{2\sqrt{3} }{3}}$

$a = \frac{12*3}{2\sqrt{3}}$

$a = \frac{6*3}{\sqrt{3}}$

$a = \frac{18}{\sqrt{3}}$

Now, finally, to find the area of a regular polygon, we use the following equation:

Area (A) = ( apothem (a) * perimeter (p) ) / 2

$A = \frac{a * p}{2}$

$A = \frac{\frac{18}{\sqrt{3} } * 72}{2}$

$A = \frac{18}{\sqrt{3}} * 36$

$A = \frac{640}{\sqrt{3}}$

Turning into a decimal:

$A = 374.123 ft ^2$

8 0

3 years ago

tina saved 25 more dimes than nickels. she saved 6 times as many dimes as nickels. how much money did she save in all

nikklg [1K]

25 ÷ (6 - 1) = 25 ÷ 5 = 5, she saved 5 nickels,

5 nickels = 5 × 5 = 25 cents = $0.25

5 + 25 = 30, she saved 30 dimes, 30 dimes = 300 cents = 3 dollars.

3 + 0.25 = $3.25, she saved $3.25 in all.

4 0

3 years ago

Read 2 more answers