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gogolik [260]
4 years ago
8

When asked to factor the trinomial x^2-16x+64, a student gives the answer (x – 8)(x + 8). Which of the following statements is t

rue?
A. The answer is correct.
B. The answer is incorrect; the trinomial cannot be factored.
C. The answer is incorrect; the minus sign should be a plus sign.
D. The answer is incorrect; the plus sign should be a minus sign.
Mathematics
2 answers:
blagie [28]4 years ago
6 0

Answer:

The previous person is correct. he plus sign should be a minus sign.

Step-by-step explanation:

Murrr4er [49]4 years ago
3 0

Answer:

The answer is incorrect; the plus sign should be a minus sign (apex)

Step-by-step explanation:

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Tim bought some 25 cent and some 29 cent stamps. He paid 7.60 dollars for 28 stamps. How many of each type of stamp did he buy?
Citrus2011 [14]

Answer:

25 cent stamps = 13 and 29 cent stamps = 15

Step-by-step explanation:

x = 25 cent stamps and y = 29 cent stamps

x + y = 28......x = 28 - y

0.25x + 0.29y = 7.60

0.25(28 - y) + 0.29y = 7.60

7 - 0.25y + 0.29y = 7.60

-0.25y + 0.29y = 7.60 - 7

0.04y = 0.60

y = 0.60 / 0.04

y = 15 <===== 29 cent stamps

x + y = 28

x + 15 = 28

x = 28 - 15

x = 13 <===== 25 cent stamps

lets check it...

0.25x + 0.29y = 7.60

0.25(13) + 0.29(15) = 7.60

3.25 + 4.35 = 7.60

7.60 = 7.60 (correct..it checks out)

8 0
3 years ago
Pls plsss help with math, it’s easyyy!! explanation needed!!
zimovet [89]

Answer:

C. x = -12 and x = 2

Step-by-step explanation:

-x²-10x+24=0     Original equation

x²+10x-24=0      Divide everything by -1

(x+12)(x-2)=0      Factor it out

x=-12,2               Solve so that the inside of the parentheses equals 0

7 0
3 years ago
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Nataliya [291]
The answer is 69

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4 0
3 years ago
What is the greatest commen factor for 32 and 72
ladessa [460]
8 is the greatest component.
8 0
4 years ago
Read 2 more answers
I'm a little bit confused about how to approach this can someone help?
Taya2010 [7]

Answer:

4

Step-by-step explanation:

ΔABC is congruent with ΔDEF.  That means the corresponding sides are congruent.

Look at the order of the letters.  EF are the last two letters of ΔDEF.  So this corresponds with the last two letters of ΔABC.  Therefore, EF ≅ BC.

EF ≅ BC

x² + 8x = 48

x² + 8x − 48 = 0

(x + 12) (x − 4) = 0

x = -12 or 4

Since x can't be negative, x = 4.

5 0
3 years ago
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