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Sophie [7]
2 years ago
5

Simplify 4a – 7b + 2ab – a + b.

Mathematics
2 answers:
Ivenika [448]2 years ago
6 0

Answer:

- ab and 15ab

Step-by-step explanation:

inysia [295]2 years ago
4 0

Answer:

3a - 6b + 2ab

Step-by-step explanation:

We can group the a's and b's like this:

4a - 7b + 2ab - a + b

4a - a - 7b + b + 2ab

3a - 6b + 2ab

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Complete this proof.
Alja [10]

Answer:

1) distributive property

2) subtraction property of equality

3) division property of equality

Step-by-step explanation:

Given : If \frac{1}{2}(8x+14)=39 , then x=8

To complete the proof :

Solution :

Following are the complete steps or proof of solving the given expression,

\frac{1}{2}(8x+14)=39  is given

4x + 7 = 39 - distributive property

4x = 32 - subtraction property of equality

x = 8 - division property of equality

3 0
3 years ago
Read 2 more answers
Which of the following is a solution of x2 + 2x + 4?
ivolga24 [154]
Strictly speaking, x^2 + 2x + 4 doesn't have solutions; if you want solutions, you must equate <span>x^2 + 2x + 4 to zero:

</span>x^2 + 2x + 4= 0.  "Completing the square" seems to be the easiest way to go here:

rewrite   x^2 + 2x + 4  as   x^2 + 2x + 1^2 - 1^2 = -4, or
                                              (x+1)^2 = -3
or                                            x+1 =i*(plus or minus sqrt(3))

or                                            x = -1 plus or minus i*sqrt(3)

This problem, like any other quadratic equation, has two roots.  Note that the fourth possible answer constitutes one part of the two part solution found above.
3 0
3 years ago
If Serena painted all the faces of the piece of the model, including the base, what area did she paint?
Mariana [72]

Answer:

is there any measurements included?

Step-by-step explanation:

6 0
3 years ago
In which of these cases is each stamp worth the most?
Alika [10]

3.15 /7 = 0.45

3.20/8 = 0.40

4.10/10 = 0.41

4.80/16 = 0.3


Answer is 1. 7 stamps worth 3.15

7 0
3 years ago
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 PLZ HELP EASY PLZ HELP ME Two vertices of a right triangle have the coordinates (−2, 5) and (9, 5) .
Sever21 [200]
I say its 11. Since the distance between the two points is 11. 

6 0
3 years ago
Read 2 more answers
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