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PtichkaEL [24]
3 years ago
9

Please help! It's Algebra.

Mathematics
1 answer:
ikadub [295]3 years ago
3 0

Answer:

Square: x= +or - \sqrt{7}, Triangle: x= + or - \sqrt{23}

Step-by-step explanation:

For the square

4x^{2}=28

dvide by four:

x^{2}=7

Take the square root of both sides

x= +or - \sqrt{7}

For the Triangle

(1/2) (2x) (2x)=46

2x^{2}=46

Divide by 2

x^{2}=23

x= + or - \sqrt{23}

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What is x in this geometry equation? Please answer I have no clue what I'm doing.​
ohaa [14]
The answer you’re looking for is x=145.

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5 0
3 years ago
-4(9n + 9) = -12(4n - 6).
WITCHER [35]

Answer:

n = 9

Step-by-step explanation:

Step 1: Write equation

-4(9n + 9) = -12(4n - 6)

Step 2: Solve for <em>n</em>

<u>Distribute:</u> -36n - 36 = -48n + 72

<u>Add 48n to both sides:</u> 12n - 36 = 72

<u>Add 36 to both sides:</u> 12n = 108

<u>Divide both sides by 12:</u> n = 9

Step 3: Check

<em>Plug in n to verify if it's a solution.</em>

-4(9(9) + 9) = -12(4(9) - 6)

-4(81 + 9) = -12(36 - 6)

-4(90) = -12(30)

-360 = -360

7 0
4 years ago
Write 100,000 as a power of 10. A) 103 B) 104 C) 105 D) 106
mamaluj [8]
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It is not A

B)10^4 = 10 * 10 * 10 * 10 = 10,000
It is not B

C)10^5 = 10 * 10 * 10 * 10 * 10 = 100,000
It could be C

D)10^6 = 10 * 10 * 10 * 10 * 10 * 10 = 1,000,000
It is not D

Your answer is C)10^5

Hope I helped!
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4 years ago
Translate the word phrase into a math expression. 15 fewer than the product of 4 and a number. 15−4x 15−4x 4x−15 4x−15 (4+x)−15
kotegsom [21]

Answer:

15-4x

Step-by-step explanation:

15 fewer is hinting at subtraction and then it states what we are subtracting 15 from which is the product of 4 and some number (4x).

7 0
4 years ago
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