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Jlenok [28]
3 years ago
12

Use the distributive property to write each expression then evaluate it 7(7-9)

Mathematics
2 answers:
valkas [14]3 years ago
8 0

Answer:

49-63

Step-by-step explanation:

1. (7·7) - (7·9)

2. (49) - (63)

3. 49 - 63 = -14

Hoped I helped!! :)

polet [3.4K]3 years ago
8 0

Answer:

Step-by-step explanation:

If you subtract -9 from positive 7 you get -2

Then you multiply the positive 7 from that -2 and your answer will be

-14

Here is an example

7(7-9) ALWAYS do the parenthesis first

7*-2

-14

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Find all solutions to the following equation. If there are any extraneous solutions, identify them and explain why they are extr
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Answer:

b = 3, which is an extraneous solution because if we replace b = 3 in the equation, we must be 5/0 and 30/0, and there is division by 0.

Step-by-step explanation:

\frac{7}{b+3} + \frac{5}{b-3} = \frac{10b}{b^2-9}

The minus common multiply must be (b-3)*(b+3) = b² - 9

\frac{7*(b-3)}{b^2-9} + \frac{5*(b+3)}{b^2 -9}  = \frac{10b}{b^2-9}

7b - 21 + 5b + 15 = 10b

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3 years ago
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According to the graph, which of the following is true? Half of each day is taken up by sleeping and eating. School and homework
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Step-by-step explanation:

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A man invests his savings in two accounts, one paying 6% and the other paying 10% simple interest per year. He puts twice as muc
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Let x represent amount invested in the higher-yielding account.

We have been given that a man puts twice as much in the lower-yielding account because it is less risky. So amount invested in the lower-yielding account would be 2x.

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r = Annual interest rate in decimal form,

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8 0
3 years ago
-5z + 9 =24 solve the equation
nataly862011 [7]

Answer:

z=-3

Step-by-step explanation:

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