3 years ago

Evaluate the expression below:

Mathematics

2 answers:

Olin [163]3 years ago

4 0

Answer:

answer is 16

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puteri [66]3 years ago

3 0

Answer:16

Step-by-step explanation: first we multiply 4*4 and then 2*2 divide them which equals 4 then we add 2 then multiply by 2 and add 4 and we get 16

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shutvik [7]

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Now we required to use angle functions in a right triangle. The cosine of $\beta$ is equal to the relation of side $a$ and hypotenuse $c$ .

Now we solve this for hypotenuse.

$\cos(\beta)=\frac{a}{c}$

$c=\frac{a}{\cos(\beta)}$

Now put in the numbers.

$c=\frac{9}{\cos(49)}\approx\boxed{13.7}$

So we know the length of hypotenuse and length of side $a$ therefore side $b$ can be calculated using Pythagorean theorem: $c^2=a^2+b^2$ .

Solve for side $b$ .

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$b=\sqrt{c^2-a^2}$

$b=\sqrt{13.7^2-9^2}\approx\boxed{9.7}$

So there you go. If you have any questions feel free to ask.

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almond37 [142]

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3 years ago

Kelsy climbs up a volcano. When she is a quarter of the way up the volcano she is at a height of 125 m. How high is Kelsy from t

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