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GrogVix [38]
3 years ago
12

When Zack checked his solution, it didn’t work. What was his mistake?

Mathematics
1 answer:
dangina [55]2 years ago
6 0

Answer: its c In step 3, he should have divided both sides by  StartFraction 6 Over 4 Endfraction.

Step-by-step explanation:

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Fifteen more than twice a number is 9
Elden [556K]
2x+15=9
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7 0
3 years ago
Suppose that a rectangular picture is surrounded by a frame of uniform width of x
user100 [1]

Answer:

Ok so the area of the frame is 18*12 = 216cm^2

Let’s suppose the width of the frame is x

The total area (painting and frame) is (2x+18)(2x+12) and this is equal to 432

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4x^2 + 60x - 216 = 0

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(x+18)(x-3) = 0

Therefore x = {-18,3}

Since width of the frame has to be positive, the width has to be 3cm Step-

i hope i helped!

3 0
2 years ago
What is the value of -7/8 divided by -1 2/5
Zigmanuir [339]

(-7/8) / (-1 2/5) = (-7/8) / (-7/5) = (-7/8) * (-5/7) = 5/8

4 0
3 years ago
Use complete sentences to explain how to use linear factors to determine the equation of a polynomial function
Leona [35]

Answer: p(x) = a (x-b)(x-c)(x-d)

Step-by-step explanation:

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If there is one, it is a linear polynomial.

If there are 2, then it is a quadratic polynomial.

If there are three then it shall be a cubic polynomial.

Now let us assume that there are three linear factors.

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If x-b, x-c & x-d are the factors we write

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8 0
3 years ago
Read 2 more answers
How times can 38 go into 7
kaheart [24]
Hmm, this answer is mathematically incorrect. If the question has no errors, 38 can go into 7 0 times, it can't because its bigger than 7. 

However, if it were meant to be the other way round, how many times does 7 go into 38, the answer would be 5. 
6 0
3 years ago
Read 2 more answers
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