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3 years ago

Find the slope of the line through the points (-4, 3) and (3, 5)

Mathematics

2 answers:

Amanda [17]3 years ago

6 0

Answer: 2/7

Step-by-step explanation:

Slope is ∆y/∆x. ∆ is read as "delta". The "delta" sign means "the difference between". So that means the difference between the y-coordinates divided by the x-coordinates gives us slope. Therefore, using the coordinates, 5-3 gives us the rise. And 3-(-4) gives us the run. Rise/Run is also equivalent to the slope. Thus, our final answer is 2/7.

lukranit [14]3 years ago

3 0

Use the formula y2 -y1/x2-x1

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Sandra earns $15.25 for working 1 hour. How much does she earn per 4 hour?

Dmitriy789 [7]

Answer:

$61

Step-by-step explanation:

Earning of one hour = $15.25

Earning of 4 hours = $15.25*4 =$61

3 0

3 years ago

Read 2 more answers

¡¡ANSWER ME FIRST¡¡ Can you please answer these questions?

rusak2 [61]

Answer:

x= 6

Step-by-step explanation:

$12x +4 = 10x+16 \\$

You will subtract 10x from 12x and get 2x

$2x + 4 = 16$

Subtract 4 from 16 to get 12

$2x = 12$

You will then divide both sides by 2

$\frac{2x}{2}$ = $\frac{12}{2}$

x= 6

The second one is hard to read but since ∠3 is 54° you should just start from there

Hope this helps

4 0

3 years ago

Read 2 more answers

Find the exact value of cos 157.5°.

Nonamiya [84]

Cos 157.5º=-cos (180º-157.5º)=-cos 22.5=-cos(45/2)

cos Ф/2=⁺₋√((1+cosФ)/2).

In this case 157.5º is in the second quadrant, therefore we use the following equation:
cos Ф/2=-√((1+cosФ)/2). (we will have a negative number)

cos 157.5º=-cos (45/2)=-√((1+cos 45º)/2)
=-√((1+√2/2)/2)
=-√((2+√2)/4)
=-√(2+√2) / 2 (≈-0.92387...)

Answer: cos 157.5º= -√(2+√2) / 2

3 0

3 years ago

Correct order of (1/2)2,0.75,2/3

katrin2010 [14]

Lowest to highest:

1/2 , 2/3 , 0.75 , 2

7 0

3 years ago

Solve the following: a) 4x-1 / 2= x+7 b) 3x + 2 = 2x + 13 /3

11Alexandr11 [23.1K]

Answer:

a) 2.5

b)2.33