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Anestetic [448]
2 years ago
14

Hurry!! Worth 10 points

Mathematics
1 answer:
Solnce55 [7]2 years ago
7 0

Answer:

7 - 2x

Step-by-step explanation:

We start with

-2x + 7

And we can separate the terms

(-2x) (+7)

and move them around

(+7) (-2x)

7 - 2x is an equivalent expression.

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Is my answer correct?
ra1l [238]

Answer:

Option A, 19

Step-by-step explanation:

<u>Step 1:  Find how many students are less than 69 inches</u>

65" + 66" + 67" + 68"

 1    +   1   +  9    +  8

19

Answer: Option A, 19

8 0
3 years ago
Greatest Common Factor (GCF)<br> 1. 12a - 27
Ilya [14]

Answer:

  3

Step-by-step explanation:

The factors of 12a are ...

  2×2×3×a

The factors of 27 are ...

  3×3×3

The only common factor is 3.

_____

  12a -27 = 3(4a -9)

8 0
3 years ago
In the third degree polynomial function f(x) =x^3 + 4x, why are 2i and -2i zeros?
IgorC [24]

Answer:

We just need to evaluate and get f(2i)=0, f(-2i)=0.

Step-by-step explanation:

Since i^2=-1, then i^3=i^2i=-i, and we can apply this when we evaluate f(x) =x^3 + 4x for 2i and -2i.

First we have:

f(2i) =(2i)^3 + 4(2i)=2^3i^3+8i=8(-i)+8i=0

Which shows that 2i is a zero of f(x).

Then we have:

f(-2i) =(-2i)^3 + 4(-2i)=(-2)^3i^3-8i=-8(-i)-8i=8i-8i=0

Which shows that -2i is a zero of f(x).

4 0
3 years ago
What is the answer for my khan academy homework
Verdich [7]

Answer:

12

Step-by-step explanation:

16 divided by 4 is 4

8 + 4 : 12

7 0
2 years ago
Read 2 more answers
8 &lt; 4(x+1) show your work
kati45 [8]
8 < 4 (x + 1)   Use the Distributive Property
8 < 4x + 4       Subtract 4 from both sides
4 < 4x             Divide both sides by 4
1 < x
5 0
3 years ago
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