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3 years ago

Factor the quadratic by checking factor pairs. -15x2 – 21x + 18 -15x2 – 218 + 19 = -3

Mathematics

1 answer:

d1i1m1o1n [39]3 years ago

3 0

Answer:

-3(x + 2)(5x - 3)

Step-by-step explanation:

-15x² – 21x + 18

-3(5x² + 7x - 6)

-3[5x² + 10x - 3x - 6]

-3[5x(x + 2) - 3(x + 2)]

-3(x + 2)(5x - 3)

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podryga [215]

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2 years ago

^^^^^^^^^^^^^^^^^^^^

telo118 [61]

ANSWER

The correct answer is C

EXPLANATION

We want to find the quotient:

$- \frac{10}{19} \div ( - \frac{5}{7} )$

We multiply by the reciprocal of the second fraction:

$- \frac{10}{19} \times ( - \frac{7}{5} )$

We cancel out the common factors to obtain:

$- \frac{2}{19} \times ( - \frac{7}{1} )$

We multiply to get

$\frac{ - 2 \times - 7}{19 \times 1}$

This simplifies to :

$\frac{14}{19}$

The correct answer is C

7 0

2 years ago

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Need help with 6,7,8,9,10,11,12,15

Ainat [17]

Answer:

6. 1.01 x -10^5

7. 6 x -10^14

8. 550,000

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10. 0.000204

11. 0.0004

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7,000,000,000,000 (or 7 x 10^12) is greater by 2,000 times

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7 0

2 years ago

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8v-3v-3+7v simplified

Licemer1 [7]

Your answer is <u>12v-3.</u>

Steps:

1. Group Like Terms. (8v-3v+7v-3)

2. Add Similar Elements. (8v-3v+7v=12v)

3. Finished. (=12v-3)

Hope this helped :)

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2 years ago

Factored form of x^2-3x-4

kolbaska11 [484]

(x + 1) x (x - 4). When you check it you will get your original expression.

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2 years ago

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