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3 years ago

Need this turned in by tonight. Solving for x. My brain is fried, I have been doing math for the last 4 hour.Help!!!!!

Mathematics

1 answer:

inysia [295]3 years ago

3 0

Answer:

18. x = 24.5
19. x = 4
21. x = 10

Step-by-step explanation:

Corresponding sides have same ratio

Q18

7/6 = x / (27- 6)
6x = 7*21
x = 147/6
x = 24.5

Q19

(x + 5)/15 = (5x + 1)/35
(x + 5)/3 = (5x + 1)/7
7(x + 5) = 3(5x + 1)
7x + 35 = 15x + 3
15x - 7x = 35 - 3
8x = 32
x = 4

Q21

(x + 6)/24 = (2x - 2)/27
(x + 6)/8 = (2x - 2)/9
8(2x - 2) = 9(x + 6)
16x - 16 = 9x + 54
16x - 9x = 54 + 16
7x = 70
x = 10

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What is the slope of the line that passes through the points (7, -4) and (7, 0)? Write your answer in the simplest form.

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Answer:

The slop is undefined

i.e. $m=\infty$

Step-by-step explanation:

Considering the slope formula

$\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}$

As the points are (7, -4) and (7, 0)

Here:

(x₁, y₁) = (7, -4)

(x₂, y₂) = (7, 0)

$\mathrm{When\:}y_1\ne \:y_2\mathrm{\:and\:}\:x_1=x_2\mathrm{\:the\:slope\:is\:}\infty$

$\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}$

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$=\frac{0-\left(-4\right)}{0}$

$=\infty$

Therefore, the slop is undefined i.e. $m=\infty$

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