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lorasvet [3.4K]
4 years ago
9

HELP ME PLEASE!! Word problem, what's wrong? explain.

Mathematics
1 answer:
dmitriy555 [2]4 years ago
8 0

Answer:

She made a mistake in Step 7.

Step-by-step explanation:

Step 1 through 6 are correct. Only from Step 6 to Step 7 the problem comes in: both sides of the equation are multiplied by x, however the x on the left side, by error, becomes 1. The correct state in Step 7 should look like this:

x(\frac{1}{2}P-x)=256

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An isosceles triangle has a base 9.2 units long. If the congruent side lengths have measures to the first decimal place, what is
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Question:

An isosceles triangle has a base of 9.6 units long. If the congruent side lengths have measures to the first decimal place, what is the possible length of the sides? 9.7, 4.9, or 4.7

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Step-by-step explanation:

Given:

The base of the triangle base  =   9.2 units

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ANSWER AND SHOW WORK FOR 40 POINTS
Elanso [62]

Answer:

Q1) (x+7)² = 9

x = -10, -4

Q2) (x-8)² = 144

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Step-by-step explanation:

Q1) x² + 14x + 49 = 9

x² + 2(x)(7) + 7² = 9

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x - 1 = 9

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x = -8

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Answer:

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