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Alexeev081 [22]

3 years ago

6

PLZ Help Urgent. 15 POINTS, BRAINLY Guaranteed.

2 answers:

Oduvanchick [21]3 years ago

7 0

Answer:

D)

Step-by-step explanation:

Ok when i saw this ^5 that means the power of five i honestly don't know this is my best guess

Komok [63]3 years ago

3 0

I think answer should be d. Please give me brainlest I hope this helps let me know if it’s correct or not okay thanks bye

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What are the solutions to the following system?

bija089 [108]

The solutions are $(\sqrt{2},-1) \text { and }(-\sqrt{2},-1)$ .

Solution:

Given equation:

$-2 x^{2}+y=-5$

Add $2 x^{2}$ on both sides.

$-2 x^{2}+y+2 x^{2}=-5+2 x^{2}$

$y=-5+2 x^{2}$ -------- (1)

$y=-3 x^{2}+5$ (given) -------- (2)

Equate (1) and (2).

$-5+2 x^{2}=-3 x^{2}+5$

Add $3 x^{2}$ on both sides.

$-5+2 x^{2}+3 x^{2}=-3 x^{2}+5 +3 x^{2}$

$-5+5x^{2}=5$

Add 5 on both sides.

$-5+5x^{2}+5=5+5$

$5x^{2}=10$

Divide by 5 on both sides, we get

$x^{2}=2$

Taking square root on both sides, we get

$x=\sqrt{2}, x=-\sqrt{2}$

Substitute $x=\sqrt{2}$ in (1).

$y=-5+2(\sqrt{2})^2$

$y=-5+4$

$y=-1$

Substitute $x=-\sqrt{2}$ in (1).

$y=-5+2(-\sqrt{2})^2$

$y=-5+4$

$y=-1$

Therefore the solutions are $(\sqrt{2},-1) \text { and }(-\sqrt{2},-1)$ .

Option C is the correct answer.

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3 years ago

Which number line shows the solution to this compound inequality?

serious [3.7K]

Answer:

The explanation is on top x=10

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igor_vitrenko [27]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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28/32 that equals 7/8

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2 years ago