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worty [1.4K]
3 years ago
8

Find an equivalent expression by simplifying 10x+5x-45+7y

Mathematics
2 answers:
maksim [4K]3 years ago
5 0
The answer would be 37

10x+5x-45+7y
15x-45+7
30+7
37
egoroff_w [7]3 years ago
3 0

Answer:

15x-45+7

Step-by-step explanation:

You would add the 10x and the 5x im pretty sure that would simplify it

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Item 8 Solve for x. Use the quadratic formula. 2x2−5x−9=0 Enter the solutions, in simplified radical form, in the boxes.
Lubov Fominskaja [6]

Answer:

5+√97/4

Also 5-√97/4

Step-by-step explanation:

The Quadratic formula is x=-b+-√b^2-4ac/2a

This means that we should plug the values for A B AND C into the formula

We can work out that

<u><em>A = 2</em></u>

<u><em>B=-5</em></u>

<u><em>C=-9</em></u>

Once we have put these into the formula we get

5+√97/4 (all over 4) aka 3.71

Also 5-√97/4 (all over 4) aka -1.21

7 0
3 years ago
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kolezko [41]
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7 0
2 years ago
Plz help me and answer right
azamat
I think it might be 30 but I don’t know
3 0
2 years ago
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Need help with number 2 please help. Due today!!​
Blababa [14]

Answer:

Radius = 9

Step-by-step explanation:

Circumference = 2πr

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r = 56.5/6.28

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Name one pair of each type of angles
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Answer:

corresponding angles

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