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BlackZzzverrR [31]
3 years ago
11

If the straight line passing through A(-7, -5) and B(-3, x) is parallel to another straight line of slope 2, find the value of x

.
please help,.,,..​
Mathematics
2 answers:
Ostrovityanka [42]3 years ago
8 0
X=3; you can set up a proportion using the slope equation. So (y[sub2]-y[sub1])/(x[sub2]-x[sub1])=2/1 then plug in the values and simplify. Then cross multiply and solve for x. Rest of work shown in the picture
AnnZ [28]3 years ago
3 0

Answer:

x =  3

Step-by-step explanation:

Parallel lines have equal slopes.

Calculate the slope m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = A(- 7, - 5) and (x₂, y₂ ) = B(- 3, x), then

m = \frac{x+5}{-3+7} ← equate to 2, that is

\frac{x+5}{4} = 2 ( multiply both sides by 4

x + 5 = 8 ( subtract 5 from both sides )

x = 3

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Answer:

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Step-by-step explanation:

So, the question means that if we add the number of tiger shark teeth and the sand shark teeth and subtract it from the total number of teeth, we will get the number of bull shark teeth.

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Let x represent the number of bull shark teeth.

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