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gogolik [260]
3 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]3 years ago
6 0

Answer:

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

Step-by-step explanation:

Murrr4er [49]3 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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SCORPION-xisa [38]

Answer:

<em>Any width less than 3 feet</em>

Step-by-step explanation:

<u>Inequalities</u>

The garden plot will have an area of less than 18 square feet. If L is the length of the garden plot and W is the width, the area is calculated by:

A = L.W

The first condition can be written as follows:

LW < 18

The length should be 3 feet longer than the width, thus:

L = W + 3

Substituting in the inequality:

(W + 3)W < 18

Operating and rearranging:

W^2 + 3W - 18 < 0

Factoring:

(W-3)(W+6)<0

Since W must be positive, the only restriction comes from:

W - 3 < 0

Or, equivalently:

W < 3

Since:

L = W + 3

W = L - 3

This means:

L - 3 < 3

L < 6

The width should be less than 3 feet and therefore the length will be less than 6 feet.

If the measures are whole numbers, the possible dimensions of the garden plot are:

W = 1 ft, L = 4 ft

W = 2 ft, L = 5 ft

Another solution would be (for non-integer numbers):

W = 2.5 ft, L = 5.5 ft

There are infinitely many possible combinations for W and L as real numbers.

6 0
2 years ago
Madison wants to buy a new iPhone. The regular price is $989. Apple is offering a 15% discount and a sales tax of 7% is added af
Rzqust [24]

Answer: $899.50

Step-by-step explanation:

6 0
2 years ago
Two trains leave the station at the same time, one heading west and the other east. The westbound train travels at 80 miles per
Deffense [45]

Answer:

1.4 hour, or 1 hr 24 min

Step-by-step explanation:

The trains separate at the rate (80 + 90) mph.

Recall that distance = rate times time, or time = distance / rate.

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Here, the elapsed time is  -------------- = 1.4 hr, or 1 hr 24 min

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3 0
3 years ago
Evaluate f+g^2-3g if f= 5 and g=2
Lady_Fox [76]

Answer:

The answer world be 3.

Step-by-step explanation:

5 + 2² - 3(2) = 3

3 0
2 years ago
Read 2 more answers
Subtract the quotient of h and 3,from 4 multiplied by 4.
zimovet [89]
4(3h-4)
12h-16?


I don't think that is right, I was kinda guessing
7 0
3 years ago
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