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3 years ago

Please help Write an equation and solve for x

Mathematics

2 answers:

Ksenya-84 [330]3 years ago

6 0

The answer for this Q or math problem is 81

matrenka [14]3 years ago

5 0

Answer:

x = 81

Step-by-step explanation:

The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

x is an exterior angle of the triangle, thus

x = 23 + 58 = 81

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Kendall's sister had 25 hair clips. 7 of them were blue and the rest were purple.What percent of Kendall's sister hair clips wer

Ludmilka [50]

The answer is 18/25 = .72 or 72%

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3 years ago

Identify the equation in slope-intercept form for the line that contains points (3,−10) and (6,5).

BartSMP [9]

Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

Y=2x-7<br> y=-3x+18 <br> solve by substitution

Liono4ka [1.6K]

Answer:

-x+11

Step-by-step explanation:

am not sure if this is correct but

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2 years ago

Find a common denominator for the pair of factions.then,write equivalent fractions with the common denominator 8/15 and 1/3

Juli2301 [7.4K]

Answer:

c. 15

Step-by-step explanation: 15 is divisible by 3

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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