3 years ago

2x^2-4x-30 factored please. I m doing a test

Mathematics

1 answer:

bearhunter [10]3 years ago

4 0

Answer:

2(x+3)(x−5)

Step-by-step explanation:

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I’m honestly confused on how to solve for k. please help.

stellarik [79]

Answer:

k=9

Step-by-step explanation:

$slope = \frac{y2 - y1 }{x2 - x1} \\ \frac{ - 5}{2} = \frac{ - 11 - k}{6 - ( - 2)} \\ - ( \frac{5}{2} ) = - ( \frac{11 + k}{8} ) \\ \frac{5}{2} = \frac{11 + k}{8} \\ 5 \times 8 = 2(11 + k) \\ 40 = 22 + 2k \\ k = \frac{40 - 22}{2} \\ k = 9$

4 0

1 year ago

Write the equation of the line that passes through each pair of points in slope-intercept form. This is worth 3 points. You have

LekaFEV [45]

(0,5)(3,-1)
slope = (-1 - 5) / (3 - 0) = -6/3 = -2

y = mx + b
slope(m) = -2
(use either of ur points...(0,5)...x = 0 and y = 5
now we sub and find b, the y int
5 = -2(0) + b
5 = b

so ur line is : y = -2x + 5

6 0

2 years ago

Read 2 more answers

Answers: 3x + 26 5x + 15 x + 30 10x - 7 please answer fast!

pentagon [3]

Answer: I think it's A. 3x + 26 but im not completely sure

Step-by-step explanation:

5 0

3 years ago

Can someone help me with this ASAP. Thank You!

masha68 [24]

4x°=75-x° this might be wrong but I’m sure