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Snowcat [4.5K]
3 years ago
7

Simplify the following expression: NEED HELP QUICK PLZ :(

Mathematics
1 answer:
Anna71 [15]3 years ago
5 0
The answer is B

-8y + 7y = -y

When the signs are different, subtract and take the sign of the bigger number.
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I need this for my notes so i can know what to do. What is the length of AC? And Length of AB?
andre [41]

Answer:

AC 5

AB = 3

Step-by-step explanation:

AC = distance between the points

C-A = 3 - -2 = 3+2 = 5

The distance is 5

AB = distance between the points

B-A = 1 - -2 = 1+2 = 3

The distance is 3

8 0
3 years ago
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tekilochka [14]
Easy


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7 0
3 years ago
4(b+2)=40 what is the value of b?
Katarina [22]

Answer:

Step-by-step explanation:

4b+8=40

4b=32

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7 0
3 years ago
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Can someone please help me
Vsevolod [243]
The restrictions for the equation is that the denominator can not be zero. So the restrictions for x would be what values make the denominator zero.

7x^2 + 6x = 0
factor
x(7x + 6) = 0
multiply any number by 0 and you get 0. So either x = 0 or 7x+6 = 0
since there's a x in the numerator x/x = 1 so this will not be a restriction. Then the only restriction is:
7x+6 = 0
7x = -6
x = -6/7
5 0
3 years ago
Which set of ordered pairs does NOT represent a function? A) (0, 1), (2, 2), (4, 8), (-2, 7), (5, 8) B) (0, 1), (2, 2), (4, 8),
Viktor [21]
That is B
Because there are duplicate x-values in the ordered pairs,  ( the (2,2) and the (2,7).
8 0
3 years ago
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