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Brums [2.3K]
3 years ago
9

Please complete z2+9z-90=(z-6)(z+?) ...?

Mathematics
2 answers:
Pachacha [2.7K]3 years ago
8 0

Answer:

Answer would be 15.

Step-by-step explanation:

We have to complete the expression given as

z^{2}+9z-90=(z-6)(z+?))

We will try to factorize the expression given in the left side.

z^{2}+9z-90=z^{2}+15z-6z-90

                      = z(z+15)-6(z-15)

                      =(z-6)(z-15)

Now we will compare this factorized form with the right side of the expression.

(z-6) (z-15) (= (z-6) (z+?)

We find question mark is 15.

Therefore, the answer is 15.

notka56 [123]3 years ago
4 0
The answer is:  (z - 6)(z + 15)

z² + 9z - 90 = z*z + 15z - 6z - 6*15 =
                    = (z*z + 15z) - (6z + 6*15) = 
                    = z(z + 15) - 6(z + 15) =
                    = (z - 6)(z + 15)
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Factor the expression using the GCF.<br> 60 – 36 =
Ivanshal [37]

Answer

12 (5 - 3)

Step-by-step explanation:

The greatest common factor is the largest number that will divide both numbers evenly. As an example, 6 is a common factor because it divides both 60 and 36. However, it is not the greatest common factor.

 

If I break 60 into it's prime factors, I would get 2 * 2 * 3 * 5.

 

If I break 36 into it's prime factors, I would get 2 * 2 * 3 * 3.

 

The two number have the factors, 2, 2, and 3 in common.

 

The greatest common factor is then: 2 * 2 * 3, or 12.

 

The expression can be factored as:  12 ( 5 - 3)

6 0
3 years ago
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arsen [322]

Answer:

6/5

Step-by-step explanation:

Calculate the volume by multiplying the measured length and width of the space together, then multiply the result by the height of the room. From the example, 10 * 25 feet = 250 square feet, and 5 * 10 feet = 50 square feet.

5 0
2 years ago
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sveticcg [70]

Answer:

Do you mean what is the square root?

Step-by-step explanation:

1.73205080757

2

2.2360679775

Just find something close if those aren't answer choices

8 0
3 years ago
These Questions is worth 20 Points. No Explanation Required.
avanturin [10]

13. five plus <em>y</em> equal to negative two. y = -7

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7 0
3 years ago
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djverab [1.8K]

Answer:

1. is not

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3. remain the same

Step-by-step explanation:

8 0
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Read 2 more answers
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