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cestrela7 [59]
3 years ago
6

A student attempted to generate an equivalent expression using the distributive property, as shown below:

Mathematics
1 answer:
Stells [14]3 years ago
4 0
He didn't multiply the y by 7

7(y-5) = 7y-35
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(25 Points) The measure of b is ______?
Eva8 [605]

Answer:

21

Step-by-step explanation:

Since this is a right triangle, we can use the Pythagorean theorem

a^2 +b^2 = c^2

where a and b are the legs and c is the hypotenuse (opposite the right angle)

20^2 +b^2 = 29^2

400 + b^2 =841

Subtract 400 from each side

400-400 +b^2 = 841-400

b^2 = 441

Take the square root of each side

sqrt(b^2) = sqrt(441)

b = 21

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3 years ago
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Answer:

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Step-by-step explanation:

We are given:

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(f-g)(x)\\= -3x-3-(x^2+5)\\Multiply\:minus\:sign\:with\:terms\:inside\:the\:bracket\\=-3x-3-x^2-5\\Combining\:like\:terms:\\=-x^2-3x-3-5\\=-x^2-3x-8

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