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pogonyaev
3 years ago
12

Please help fast in a test

Mathematics
1 answer:
alexgriva [62]3 years ago
7 0

Answer:

Wut do u mean

Step-by-step explanation:

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What is the slope of the line passing through the points (−1, 3) and (4, −7) ?
alexira [117]

we know that

The formula to calculate the slope between two points is equal to

m=\frac{y2-y1}{x2-x1}

in this problem we have

A(-1,3)\ B(4,-7)

substitute in the formula

m=\frac{-7-3}{4+1}

m=\frac{-10}{5}

m=-2

therefore

<u>the answer is the option A</u>

m=-2

5 0
3 years ago
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Identify the equation of the line perpendicular to 9x - 3y = 18.
sweet [91]

Answer:

Step-by-step explanation:

Perpendicular lines have negative reciprocal slopes.

The exemplar equation has slope

9x - 3y = 18

    - 3y = -9x + 18

        y = 3x - 6

m = 3

so perpendicular slope will be -1/3

D has such a slope

3y = -x + 1

 y = (-1/3)x + 1/3

8 0
3 years ago
Find the product. (x2 + 3х - 2)(х + 3)​
g100num [7]

<u>x-3</u>

x+7

its suppose to be at fraction

8 0
2 years ago
Find the Volume: 3.2 cm<br> 7 cm<br> 4.8 cm
REY [17]
V = 0.5*b*h*l
v = 0.5*4.8*3.2*7
v = 0.5*107.52
v = 53.76cm3
7 0
3 years ago
✎﹏Question~
Varvara68 [4.7K]

Answer:

Sol: In this question, firstly we have to make the first bracket as a complete square of the second bracket. This we can by adding 2.x.1/x which is equivalent to 2. Then the equation becomes:

6(x2 + 1/x2 +2) – 5(x + 1/x) = 50 { 38 + 6*2)

⇒ 6(x2 + 1/x2 +2) – 5(x + 1/x) – 50 = 0

Now put x + 1/x = y

⇒ 6y2 -5y -50 = 0

⇒ (2y +5)(3y-10)= 0

⇒ y=-5/2 or 10/3

As x is positive therefore, x + 1/x =10/3

On solving further you will get as x=3 or 1/3

7 0
2 years ago
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