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2 years ago

Can someone help and explain

Mathematics

1 answer:

BaLLatris [955]2 years ago

5 0

Answer:

∠ A ≈ 43.1°

Step-by-step explanation:

Using the Sine rule in Δ ABC , that is

$\frac{a}{sinA}$ = $\frac{c}{sinC}$ , substitute values

$\frac{20}{sinA}$ = $\frac{29}{sin82}$ ( cross- multiply )

29 × sinA = 20 × sin82 ( divide both sides by 29 )

sinA = $\frac{20sin82}{29}$ , thus

∠ A = $sin^{-1}$ ( $\frac{20sin82}{29}$ ) ≈ 43.1° ( to 1 dec. place )

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Heres an ez question for yall

SSSSS [86.1K]

Answer: Choice B

$\left\{ \ 3, 5, \sqrt{34} \ \right\}$

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

Explanation:

We'll be using the converse of the pythagorean theorem.

If we had a triangle with sides a,b,c and $a^2+b^2 = c^2$ was true, then we have a right triangle. Note: c is always the longest side

For the first answer choice we have: a = 5, b = 8, c = 12

Then,

$a^2+b^2 = c^2\\\\5^2+8^2 = 12^2\\\\25+64 = 144\\\\89 = 144\\\\$

which is false. This shows that we do not have a right triangle with sides 5,8,12. This rules out choice A. Choice C is a similar story.

Choice B on the other hand works because

$a^2+b^2 = c^2\\\\3^2+5^2 = (\sqrt{34})^2\\\\9+25 = 34\\\\34 = 34\\\\$

We have a true statement at the end, which confirms <u>choice B</u> is a right triangle.

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1 year ago

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Vlad [161]

Answer:

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2 years ago

There are 870 people attending a conference.if 8.9% were canda how many people is this

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Step-by-step explanation:

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3 years ago

Read 2 more answers

Michael is 3 times as old as Brandon. 18 years ago, Michael was 9 times as old as Brandon.

Zigmanuir [339]

I hope this helps you

Brandon x

Michael 3x

18 years ago

Brandon x-18

Michael 3x-18

9 (x-18)=3x-18

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2 years ago

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If instead the distribution is discrete, the value will depend on how the interval of number between 1 and 29 are chosen - are they integers? evenly spaced rationals? etc

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3 years ago