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Likurg_2 [28]
3 years ago
11

Find the value of x, please I need help! (5x + 13) (3x + 7)

Mathematics
1 answer:
Maksim231197 [3]3 years ago
4 0
STEP-BY-STEP SOLUTION:

0 = ( 5x + 13 ) ( 3x + 7 )

0 = 15x^2 + 35x + 39x + 91

0 = 5x ( 3x + 7 ) + 13 ( 3x + 7 )

0 = ( 3x + 7 ) ( 5x + 13 )


3x + 7 = 0

3x = - 7

x = - 7 / 3


5x + 13 = 0

5x = - 13

x = - 13 / 5


ANSWER:

Therefore, there are two solutions to this problem. The answer is:

x = - 7 / 3

&

x = - 13 / 5


Please mark as brainliest if you found this helpful! :)
Thank you <3
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Find two numbers a and b such that a+b=0 and ab=36
PolarNik [594]

Answer:

b = 6i   then a = -6i

b = -6i   then a = 6i

Step-by-step explanation:

a+b=0

ab=36

a = -b

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Take the square root of each side

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so b = 6i   then a = -6i

b = -6i   then a = 6i

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Logically, he would owe 14 less each week

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Hope this helps


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3 years ago
What is the exact volume of the cylinder? height 9 in. width 6 in.
boyakko [2]
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muminat

Answer:

p  ≥ -10

Step-by-step explanation:

Divide both sides by-9:

When dividing or multiplying by a negative number, always flip the inequality sign:

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Cancel out the negatives:

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Simplify the signs:

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p >= -10 · 9/ 1 · 9

Factor out and cancel the greatest common factor:

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