MATHEMATICS MIDDLE SCHOOL

13 subtracted from a number w is 15.

Answers

Answer 1
Answer: W-13=15|+13
w=15+13
x=28

Answer: w=28
Answer 2
Answer: W is 15 when 13 has been subtracted from it? So, you need to add back what was subtracted giving you 28. I think that's what you were asking, you weren't all too clear. Hope I helped.

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HIGH SCHOOL

Which expression is a common factor of x2+10x+16 and x2+11x+18 ? A) x+2
B) x+4
C) x+8
D) x+9

Answers

X+2 is the only command factor when re-writing the expression in Alternate form.
(x+8) (x+2) & (x+9) (x+2)
MIDDLE SCHOOL

Which is a solution to the equation |10-5y|=20

y=2

y=4

y=6

y=10

Answers

Answer:

y=6

Step-by-step explanation:

|10-5y|=20

Since the absolute value is isolated, we can then separate the equations

For absolute values, there is a positive and negative when we remove the absolute values.

10-5y = 20          10-5y= -20

Subtract 10 from each side

10-10-5y = 20-10          10-10-5y= -20-10

-5y = 10                             -5y = -30

Divide by -5

-5y/-5 =10/-5                    -5y = -30/-5

y =-2                                      y =6

MIDDLE SCHOOL

What is the value of x to the nearest tenth.


X=

Answers

*use calculator to get final product

*x is not equal to 13.490 it is an estimation so use (≈)

MIDDLE SCHOOL

- ( x - 1 ) = -4x - 2

Answers

Answer:

x=-1

Step-by-step explanation:

1. Remove the parenthesis

   -x + 1 = -4x - 2

2. Get x alone

  -x + 1 = -4x - 2

  +1x        +1x

1=-3x - 2

+2      +2

3=-3x          -3x/-3= x      3/-3 = -1      

x=-1

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