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PolarNik [594]
3 years ago
11

PLEASE HELP!!!! In the problem below, the student made a mistake. What is the students mistake in 1-2 sentences?

Mathematics
1 answer:
likoan [24]3 years ago
3 0
1. The student changed -5x to -6x -1x. You can not simplify things like that, and it is not even equal to it’s original value.

2. The student correctly had x and -1 outside of the parenthesis, and should have stopped solving there. But those numbers totally vanished.
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Can anyone help me out??
Troyanec [42]

9514 1404 393

Answer:

  p(1) = 6

Step-by-step explanation:

The basic idea is to put 1 wherever you see x. That gives you ...

  p(1) = 2·1² +3·1 +1

The powers of x are all 1 when x=1, so the value of p(1) is just the sum of the coefficients:

  p(1) = 2 + 3 + 1

  p(1) = 6

7 0
2 years ago
4th Grade homework help, explain answer please
Ymorist [56]
1 Yard = 3 feet

2/3 of one yard would be 2 feet.

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5 0
3 years ago
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Hayden says that 32 is a whole number because it does not repeat as a decimal. Is she correct? why or why not?
VARVARA [1.3K]

Answer:

he is not

Step-by-step explanation:

a whole number has no decimal and it is not a fraction and NO NEGATIVES 3/2is a fraction/decimal so it is not a whole number

4 0
3 years ago
jan, mya, and sara ran a total of 64 miles last week. jan and mya ran the same number of miles. sara ran 8 less miles than jan a
kherson [118]
x-\ Jan's\ destination\\\\y-\ Mya's \ destination \\\\ z-\ Sara's\ destination\\\\\
x+y+z=64\\
x=y\\
z-8=2x\\\\
x+x+z=64\\
z=2x+8\\\\
2x+2x+8=64\\\\
4x+8=64\\\\
4x=64-8\\\\
4x=56\ \ |:4\\\\x=14\\\\z=2x+8=2*14+8=28+8=36\\\\ Sara\ ran\ 36\ miles.
5 0
3 years ago
arah mailed her computer to Store B for repairs. Her bill was: Total Cost of Computer Repair = $1,444.50 Shipping = 2 percent of
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1415.61 REPAIR
28.89 SHIPPING
212.34 TIP
1656.84 TOTAL
7 0
3 years ago
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