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PtichkaEL [24]
3 years ago
15

Answer pls The hint part also

Mathematics
1 answer:
tatiyna3 years ago
3 0
4x+60+ x+15=180
5x+75=180
5x=105
x=21
Two linear angles are supplementary thereom
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Find the equation of the line that has slope of 7 and passes through the point (-9,2).
lawyer [7]

Answer:

y=7x+65

Step-by-step explanation:

You want to find the equation for a line that passes through the point (-9,2) and has a slope of 7.

First of all, remember what the equation of a line is:

y = mx+b

Where:

m is the slope, and

b is the y-intercept

To start, you know what m is; it's just the slope, which you said was 7. So you can right away fill in the equation for a line somewhat to read:

y=7x+b.

Now, what about b, the y-intercept?

To find b, think about what your (x,y) point means:

(-9,2). When x of the line is -9, y of the line must be 2.

Because you said the line passes through this point, right?

Now, look at our line's equation so far: . b is what we want, the 7 is already set and x and y are just two "free variables" sitting there. We can plug anything we want in for x and y here, but we want the equation for the line that specfically passes through the the point (-9,2).

So, why not plug in for x the number -9 and for y the number 2? This will allow us to solve for b for the particular line that passes through the point you gave!.

(-9,2). y=mx+b or 2=7 × -9+b, or solving for b: b=2-(7)(-9). b=65.

The equation of the line that passes through the point (-9,2) with a slope of 7

is

y=7x+65

Have a nice day!

5 0
3 years ago
40 POINTS!!!!Which of the following is not a polynomial?
ElenaW [278]

Answer:

5x²

Step-by-step explanation:

because polynomials are the expressions where many terms are involved

8 0
3 years ago
What is the answer to this math question
Vilka [71]

(19 {b}^{3}  + 16 {f}^{3} ) \times 2 {b}^{5}  = 38 {b}^{8}  + 32 {b}^{5}  {f}^{3}
8 0
3 years ago
​One-third of a number is 1 more than ​one-fourth of the same number.<br> What is the number?
konstantin123 [22]

Answer:

  12

Step-by-step explanation:

1/3 of 12 = 4

1/4 of 12 = 3

4 is 1 more than 3.

The number is 12.

_____

If this does not immediately come to mind, you can solve for the number, x:

  x/3 -x/4 = 1 . . . . the difference between 1/3 of x and 1/4 of x is 1

  x/12 = 1 . . . . . . . collect terms: (1/3 -1/4 = 4/12 -3/12 = 1/12)

  x = 12 . . . . . . . . multiply by 12

7 0
3 years ago
A certain coin is a circle with diameter 18 mm. What is the exact area of either face of the coin? The exact årea of either face
solniwko [45]

I don't understand it sorry

7 0
3 years ago
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