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dsp73
3 years ago
9

If two angles of a triangle have measures of 42° and 20°, what is the measure of the third angle?

Mathematics
1 answer:
dexar [7]3 years ago
3 0

The other angle would be 118°

The three angles of a triangle must add up to 180°.

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∠A and ∠B are vertical angles. If ∠A=8x+14 and ∠B=2x+50, what is m∠B?
Maslowich

Answer:

∠B = 62°

Step-by-step explanation:

Because ∠A and ∠B are vertical angles they are equal hence we can write

∠A = ∠B

8x + 14 = 2x + 50

Now we have to solve for x

To do so, subtract 2x on both sides of the equation:

6x + 14 = 50

Now, subtract 14 on both sides of the equation

6x = 36

Now, divide 6 on both sides of the equation

x = 6

To find m∠B you have to you have to plug in x = 6 back into the ∠B equation

∠B = 2(6) + 50

∠B = 62°

4 0
3 years ago
If the battery costs $75 and has a life of 300 charge-discharge cycles, what is the cost of the energy in dollars per kilowatt h
kumpel [21]

Answer:

I'm sorry but no idea

Step-by-step explanation:

No idea

3 0
3 years ago
17) Find the slope of the line that passes through each pair of points.
elena55 [62]
Its c because i did it already and got it right
4 0
2 years ago
What irrational number is between 4.47 and 4.48?
shepuryov [24]

Answer: √20 is between 4.47 and 4.48

Step-by-step explanation:  Square roots of numbers between perfect squares are irrational numbers. 16 and 25 are squares of 4 and 5, so the irrational number we are looking for must be about halfway between 16 and 25.

\sqrt{20} =4.472135955  is more than 4.47 and less than 4.48

5 0
3 years ago
What is the slope of a line perpendicular to the line whose equation is x-3y= -18 Fully simplify your answer.
qwelly [4]

Answer:

-3

Step-by-step explanation:

Isolate -3y by subtracting x from both sides

-3y = -18 - x

Divide everything by -3

y = 6 + 1/3x

Slope is 1/3, and perpendicular lines have the reverse reciprocal slope, so our slope is -3

7 0
1 year ago
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