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3 years ago

4. Solve by factoring: x2 + 5x - 14 = 0

Mathematics

2 answers:

Ludmilka [50]3 years ago

8 0

Answer:

(x+7) (x-2) = 0

so your answer is, -7,2

Step-by-step explanation:

scoundrel [369]3 years ago

4 0

Answer:

x=2, -7

Step-by-step explanation:

x^2+5x-14

=(x-2)(x+7)

x+7=0 x=-7

x-2=0 x=2

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3 years ago

The radius of the base of a cylinder is decreasing at a rate of 121212 kilometers per second. The height of the cylinder is fixe

WARRIOR [948]

Answer:

7536 $km^3/sec$

Step-by-step explanation:

Given that:

Rate of decreasing of radius = 12 km/sec

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Solution:

First of all, let us have a look at the formula for volume of a cylinder.

$Volume = \pi r^2h$

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$r$ = 40 km (variable)

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As $\pi, h$ are constant:

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3 years ago

Christian wants to make an A in his class. There are 5 exams this year, and he has taken 4 of them. His grades were 84, 88, 95,

ioda

Answer:

last test grade=x x ≥ 79 so 79%

Step-by-step explanation:

(84/5)+(88/5)+(95/5)+(104/5)+(x/5) ≥ 90

Simplify: (371/5)+(x/5) ≥ 90

Subtract (371/5) from both sides

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Then multiply both sides by 5 and you have x ≥ 79

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3 years ago

Write in point-slope form an equation of the line that passes through the point (8, 9) with slope 7.

Lina20 [59]

Answer:

Step-by-step explanation:

$(8,9)=(x1,y1) \\ m=7 \\ y−y1=m(x−x1) \\ y−9=7(x−8)$

$y - 9 = 7x - 56 \\ y = 7x - 56 + 9 \\ y = 7x - 47$

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3 years ago