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vazorg [7]
2 years ago
14

Solve the equation by factoring. 3z2 + 3z – 6 = 0 z = 3 or z = 2

Mathematics
1 answer:
lana66690 [7]2 years ago
5 0

Answer:

<u>3</u><u>z</u><u>^2 + 3z - 6 </u>=0

3

3 (z^2 + z -2) = 0

3(z+2)(z - 1) = 0

z + 2-2 = 0 - 2

z = -2

z - 1 + 1 = 0 + 1

z = 1

Step-by-step explanation:

  1. factor out the GCF (3) and divide everything by it, and then set it equal to zero.
  2. since you have a degree of 2, factor it into two binomials that start with the square root of the first term and end with the square root of the second term.
  3. 3=0 is extraneous solution so we leave it, then we set each binomial equal to zero to solve for z.

note: your solutions is based on the degree or the exponent of the polynomial or the function.

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elena55 [62]

Answer:

$39.20

Step-by-step explanation:

Since she purchased a $49 gift and uses a coupon that offers 20% off, multiply the cost by 80% (0.8)

49(0.8)=39.2

Marie will spend $39.20 on the gift after using the coupon.

7 0
2 years ago
PLEASE HELP ME!<br> Find m∠FEC.<br><br> Answer Options:<br> A. 69<br> B. 50<br> C. 57<br> D. 37
Anna35 [415]

Answer:

Option (A)

Step-by-step explanation:

Measure of an angle formed between a chord and a secant is equal to the half of the difference of the intercepted arcs.

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(15 + 6x)° = \frac{1}{2}[(24x - 6)^{\circ}-(9+7x)^{\circ}]

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7 0
2 years ago
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solong [7]

Answer:

The correct answer is $12

Step-by-step explanation:

To check, subtract 12 from 31

31 - 12 =19

Multiply 19 by 2

19 x 2 =38

Add 12

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6 0
1 year ago
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Step-by-step explanation:

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2 years ago
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Answer:

The following triangle is equilateral triangle. Solve for the

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7 0
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