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goblinko [34]
2 years ago
7

Which one of you pieces of shxt is good at math

Mathematics
1 answer:
Marta_Voda [28]2 years ago
8 0

Answer: it depends lolll

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Which number line shows the sum of -8, 4, and -2?
kompoz [17]

Well there's no image but the sum of -8 and 4 is -4. Then -4+-2 is -6. If that helps anything.

6 0
3 years ago
2/3n=4n-10/3n-1/2 <br>can you show me how to do it step by step please
aleksklad [387]

Sorry IDk............    


4 0
2 years ago
Change 3648 to standard form​
pychu [463]
I'm pretty sure it's

3.648 x 10(exponent 3)
4 0
3 years ago
Cynthia Besch wants to buy a rug for a room that is 24 ft wide and 33 ft long. She
qaws [65]
<h3>Answer:   16 ft by 25 ft</h3>

=========================================================

Explanation:

Refer to the diagram below.

The outer dimensions 24 ft and 33 ft shrink down to 24-2x ft and 33-2x ft respectively. This subtraction of 2x is due to subtracting two copies of x per side.

The carpet has area of (24-2x)(33-2x)

Cynthia can afford to buy 400 sq ft of carpet

So we set 400 equal to that previous expression and solve for x

(24-2x)(33-2x) = 400

24(33-2x) - 2x(33-2x) = 400

792-48x - 66x + 4x^2 = 400

4x^2 - 114x + 792 = 400

4x^2 - 114x + 792-400 = 0

4x^2 - 114x + 392 = 0

From here, use the quadratic formula to isolate x.

Plug in a = 4, b = -114, c = 392

x = \frac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\x = \frac{-(-114)\pm\sqrt{(-114)^2-4(4)(392)}}{2(4)}\\\\x = \frac{114\pm\sqrt{6724}}{8}\\\\x = \frac{114\pm82}{8}\\\\x = \frac{114+82}{8} \ \text{ or } \ x = \frac{114-82}{8}\\\\x = \frac{196}{8} \ \text{ or } \ x = \frac{32}{8}\\\\x = 24.5 \ \text{ or } \ x = 4\\\\

The two possible solutions are x = 24.5 and x = 4

But if x = 24.5, then 24 - 2x = 24 - 2*24.5 = -25 which isn't possible. We cannot have a negative width or negative length for the carpet.

Luckily x = 4 does work since

24 - 2x = 24 - 2*4 = 16

33 - 2x = 33 - 2*4 = 25

Both results are positive.

Therefore, the carpet has dimensions of <u>16 ft by 25 ft</u>

Check: 16*25 = 400, so the answer is confirmed

5 0
1 year ago
Rewrite the question in slope-intercept form:<br> 2x-4y-12= -13-2x
madreJ [45]

Answer:

y= x + 1/4

Step-by-step explanation:

did the math and that should be your answer

3 0
3 years ago
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