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Yakvenalex [24]

2 years ago

9

!! PLEASE HELP!! WILL GIVE U BRAINLYEST!! Write an example of a real world situation using either the diameter of a circle, the

radius of a circle or both.

1 answer:

Alborosie2 years ago

8 0

Answer:

Calculation of the distance of a wheel passed.

Step-by-step explanation:

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In triangle ABC, a = 9, c = 5, and angle B = 120°. Find the measure of angle A to the nearest degree. Show your work.

slamgirl [31]

<u>Answer:</u>

Angle A = 39°

<u>Step-by-step explanation:</u>

We are given that there is a triangle ABC where a = 9, c = 5 and angle B = 120° and we are to find the measure of angle A.

But first we need to find the side b using the law of cosine:

$b^2 = a^2 + c^2- 2a*c*cos(120)$

$b^2 = 81 + 25 - 2*9*5*(-0.5)$

$b=\sqrt{151}$

Now finding angle A using law of cosine:

$cos(A) = \frac{b^2+c^2-a^2}{2b*c}$

$cos(A) = \frac{151+25-81}{2*12.29*5}$

$cos A=0.7730$

$A=39.38$

Therefore, the measure of angle A = 39°.

7 0

3 years ago

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What is 58,413,000,000 in scientific notations

blagie [28]

Answer:

5.8413 × 10^10

Step-by-step explanation:

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3 years ago

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Giving away POINTS Tell me your favorite color!

Aleksandr-060686 [28]

Answer:

mint green

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brainliest?

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2 years ago

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Dion spent m minutes on his math homework, g minutes on his german homework and 30 minutes on his biology homework. In total he

Blizzard [7]

m + g + 30 = t

If m = 40 and t = 95,

g = t - m - 30 = 95 - 40 - 30 = 25.

8 0

3 years ago

A right triangle's height is 3 times the length of its base. if the area of the triangle is 486, what is the height?

Irina-Kira [14]

The formula of the area of a triangle:
$A_\Delta=\dfrac{bh}{2}$
b - the bash - the height
We have:
b - the base3b - the height486 - the area

Substitute:
$\dfrac{3b\cdot b}{2}=486\ \ \ |\cdot2\\\\3b^2=972\ \ \ |:3\\\\b^2=324\to b=\sqrt{324}\\\\b=16\to h=3b=3\cdot18=54$
Answer: The length of the height is equal 54 units.

4 0

3 years ago