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miss Akunina [59]
3 years ago
12

QUADRATIC EQUATION â€" WORD PROBLEMS

Mathematics
1 answer:
dusya [7]3 years ago
4 0

Answer: -7, 12

Step-by-step explanation:

a+b = 5

a*b = -84

a = 5-b

(5-b)*b = -84

-b^2 + 5b + 84 = 0

(-b - 7)(b + 12) = 0

The roots are -7 and 12.

I'm not sure what â€" stands for

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Samuel takes 5 hours to make a table and a chair. He takes 9 hours to make 3 chairs
nikklg [1K]

Answer:

3 hours

Step-by-step explanation:

t = time to make a table

c = time to make a chair

t + c = 5

t+3c = 9

Subtract the second equation from the first

t+3c = 9

-(t + c = 5)

-----------------------

       2c = 4

Divide by 2

2c/2 = 4/2

c =2

2 hours for the chair

t+c = 5

t+2 = 5

t = 5-2

t = 3hours

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3 years ago
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One of two or more expressions that are multiplied together to get a product is what?
Yuri [45]

Answer:

The numbers that you multiply together to get a product are called factors.

Step-by-step explanation:

Factors are the numbers that are used to find products.

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3 years ago
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Eduardwww [97]

(−12a^3b)(7ac+2b^2)

Step-by-step explanation:

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−84a^4bc−24a^3b^3=

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Consider the graph shown. Which of the following does not represent the rate of change found when using similar triangles? Selec
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Answer:

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Step-by-step explanation:

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Write the equation of the line that passes through the points (-6, 6) and (7, 7). Put
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6 = 1/13 (6-7)

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