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poizon [28]
3 years ago
8

What is the measure of angle B in the triangle? This triangle is not drawn to scale.

Mathematics
1 answer:
Kazeer [188]3 years ago
4 0

Answer: m\angle B=70\°

Step-by-step explanation:

By definition, the sum of the interior angles of a triangle is 180 degrees.

Based on this, you need to set up the following equation:

40+(2x-30)+(x+20)=180

The next steo is to solve for "x" in order to find its value. This is:

40+2x-30+x+20=180\\\\30+3x=180\\\\3x=180-30\\\\3x=150\\\\x=\frac{150}{3}\\\\x=50

You can observe in the picture of the triangle ABC given in the exercise, that:

m\angle B=(2x-30)\°

Therefore, you must substitute the value of "x" into that equation and then evaluate, in order to find the measure of the angle B. This is:

m\angle B=(2(50)-30)\°\\\\m\angle B=(100-30)\°\\\\m\angle B=70\°

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5.178

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Cancel the 9 for an 8

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Can someone Help me please?? :(
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What is 0.888 into a fraction, is it over 100ths or 1,000's?
Bingel [31]

Thanks for using Brainly!

0.888 = 111/125 = 88.8percent

I just gave you 0.888 is it's fraction and percentage.

First, 111/125 is the simplified answer and is over the 100th and is not big enough for the 1,000's.

Second, 111/125 as a percentage is 88.8%.

Have a great day.

8 0
3 years ago
The power P of a jet of water is jointly proportional to the cross sectional area A and to the cube ofthe velocity V. (a) Write
anastassius [24]

Answer:

a)  P=kAV^3

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Step-by-step explanation:

a)

If one quantity, A, is jointly proportional to other 2 quantities (B & C), we can write proportionality equation as:

A=k*B*C

Where

k is the proportionality constant

Now, for this problem, P is jointly proportional to A and CUBE OF V, so we can write:

P=kAV^3

b)

Now velocity, V, is triples, which means it becomes 3V

Also, cross sectional area, A, is doubled, which means it becomes 2A

Let's put these into formula and see the difference:

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