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Snowcat [4.5K]
4 years ago
14

Select all the true equations.

Mathematics
1 answer:
anygoal [31]4 years ago
6 0
The answer is B and D
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Please help me with this
postnew [5]
Area of a regular polygon = 1/2 x apothem x perimeter

We know that each side is 10, because if you draw a segment from the center to a vertex it creates a 30-60-90 triangle (those are the angles). This type of triangle has a ratio for its sides where the longer side is radical three times as long as the shorter leg. This shorter leg happens to be half of a side of the polygon. Knowing that the polygon has 6 sides, we can multiply 10 by 6 to get the perimeter. 

Area of polygon = 1/2 x apothem x perimeter = 1/2 x 5\sqrt{3} x 60
=30 x  5\sqrt{3}
= 30 x 5 x <span>1.73205080757
= 150 x </span><span>1.73205080757
= </span><span>259.807621135

To the nearest tenth of a cm, the area of the polygon is 260 cm squared</span>
3 0
3 years ago
Plz help it's done bye nine
arsen [322]
Take a ruler and measure the longest side and the shortest side.
Multiply the long side by 2, because there are two of them.
Multiply the short side by 2, for the same reason.
Add the 2 answers that you got together for the perimeter.

Dont forget, if it's under 1/4 inch round down. If it is over 1/4 inch round up to the 1/2 inch.
7 0
4 years ago
Read 2 more answers
Richard has just been given a 10-question multiple-choice quiz in his history class. Each question has four answers, of which on
DiKsa [7]

Answer:

Step-by-step explanation:

To find the probability that he answered all correctly

let n be the number of questions correctly answered

prob of correct answer: 1/4 = 0.25

prob of answering all correctly:

p(n=10): 0.25∧10 = 0.000000953

prob of wrong answer:  3/4 = 0.75

Prob that he will fail the 10:

prob(n=0): 0.75∧10 =0.0563

7 0
3 years ago
What is B^2 ?<br><br> Square root of B^2 is ?
Andrews [41]

Answer:

<em><u>w</u></em><em><u>h</u></em><em><u>a</u></em><em><u>t</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><em><u>B</u></em><em><u>^</u></em><em><u>2</u></em><em><u> </u></em><em><u>?</u></em>

ans - 1 byte2

<em><u>Square</u></em><em><u> </u></em><em><u>root</u></em><em><u> </u></em><em><u>of</u></em><em><u> </u></em><em><u>B</u></em><em><u>^</u></em><em><u>2is</u></em><em><u> </u></em><em><u>?</u></em>

ans - Square root(byte^2) =

1 byte

3 0
3 years ago
The question is down below please help
Inessa [10]

Answer:

last one

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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