3 years ago

7(-2k+4)-6=7k-20 what is the answer

Mathematics

1 answer:

lord [1]3 years ago

7 0

The answer to this equation would be k=2

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3 years ago

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How do I solve these? Please give an explanation!!

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2 years ago

the fire hydrant sits 72 feet from the base of a 125-foot buiding. Find the ANGLE OF ELEVATION from the fire hydrant to the top

PSYCHO15rus [73]

Answer:

60°

Step-by-step explanation:

The mnemonic SOH CAH TOA reminds you of the relationship between angles and sides in a right triangle. Here, we're given the side Adjacent and the side Opposite the angle of interest. This makes it appropriate to choose the relation ...

Tan = Opposite/Adjacent

For our angle of elevation α, this means ...

tan(α) = 125/72

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The angle of elevation is about 60°.

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2 years ago

A line with slope 3 passes through the point (0,10). What is the y-coordinate of the point on the line with x-coordinate 2?

lana [24]

Hello!

So to find the y-coordinate we need an equation for the line. The equation we can use is

y = mx + b

In this we already know m(the slope which is 3) and we can find b by plugging in the points that are given.

10 = 3(0) + b
10 = 0 + b
10 = b

So now that we've found b, we can use this in our equation

y = 4x + b

So now we can plug in the x-coordinate that we know (2) and find the y - coordinate.

y = 4(2) + 10
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18 is your y-coordinate

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3 years ago

Do you need to comepare the numbers 83 and 24 to comepare -83 and +24

Afina-wow [57]

Yes. An easy way to solve -83+24 is to do 83-24
That equals 59
Your answer is -59

8 0

3 years ago