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Arturiano [62]
3 years ago
7

WILL MARK BRAINLIEST!!! help!​

Mathematics
2 answers:
bekas [8.4K]3 years ago
5 0

Answer:

The answer is D.

Sveta_85 [38]3 years ago
4 0
The answer is D because you need to factor the perfect squares then take the square root of all three of them
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1. If you know that f(x) + g(x) = -x+2, then what two equations could they be?
aleksley [76]

Answer:

O f(x) = 2x3 – x+4 and g(x) = -2x + x - 6

Step-by-step explanation:

4 0
3 years ago
Need an answer for question 7 HURRY PLEASE 20 POINTS
Andrei [34K]

Answer:

2x^2 = 6x - 5.

-x^2 - 10x = 34.

These have only complex roots/

Step-by-step explanation:

3x^2 - 5x = -8

3x^2 - 5x + 8 = 0

There are complex roots if the discriminant  9b^2 - 4ac) is negative.

Here the discriminant D = (-5)^2 - 4*-5*8 = 25 + 160

This is positive so the roots are real.

2x^2 = 6x - 5

2x^2 - 6x + 5 = 0

D = (-6)^2 - 4*2*5 =  36 - 40 = -4

So this has no real roots only complex ones.

12x = 9x^2 + 4

9x^2 - 12x + 4 = 0

D = (-12)^2 - 4*9 * 4 = 144 - 144 = 0.

- Real roots.

-x^2 - 10x = 34

x^2 + 10x + 34 = 0

D = (10)^2 - 4*1*34 = 100 - 136 = -36.

No real roots = only complex roots.

7 0
3 years ago
Sarah is saving money to buy a microscope. She has saved $25 so far. That's 1/3 of the
seropon [69]

Answer:

X = $75

Step-by-step explanation:

X=total cost

x* (1/3) =$25

multiply by 3 on both sides

x=$75

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2 years ago
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Answer:

350-315=35

(35÷350)×100

=10%

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3 years ago
Read 2 more answers
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