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bearhunter [10]
3 years ago
11

(5x + 2)2 + 15x + 6 = 0

Mathematics
2 answers:
slavikrds [6]3 years ago
6 0

Answer: X= -2/5

Step-by-step explanation:

Distribute within the parenthesis

10x + 4 +15x + 6= 0

Combine like terms

25x + 10 = 0

Isolate x

25x =-10

x= -10/25= -2/5

Check your answer by plugging it in back into the equation.

(-2 +2) +15(-2/5) + 6 = 0

0 + (-6) + 6 = 0

Kamila [148]3 years ago
5 0

Answer:

x = -0.4

Step-by-step explanation:

(5x+2)2 + 15x + 6 = 0

10x + 4 + 15x + 6 = 0         Simplify

25x + 4 + 6 = 0

25x + 10 = 0                    Subtract 10 from both sides

        - 10   -10

25x = -10

25x/25 = -10/25           Divide by 25 on both sides

x = -0.4

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Activity
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Answer:

The answers to each part are:

Part A.

  • <u>The quantity of apples is one-third of the quantity of grapes</u>.

Part B.

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Part C.

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Step-by-step explanation:

To identify the answer in each case, you must remember that all the parts are equal, then:

Part A.

The parts of apples are 1 and the parts grapes are 3, so if you divide the first quantity with the second quantity you obtain:

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In this case, <u>the quantity of apples is a quarter of the quantity of strawberries</u> or the quantity of apples is four times smaller than the quantity of strawberries.

Part C.

First, you must add all the part of fruit:

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Now, you can see <u>the number of cherries is two-elevenths of the total fruit</u>.

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