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steposvetlana [31]
3 years ago
12

What is the coefficient of 15-8y?

Mathematics
2 answers:
Nikitich [7]3 years ago
8 0

Answer: 15

Step-by-step explanation:

SVEN [57.7K]3 years ago
5 0

Answer: its 15 and 8

Step-by-step explanation:

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How do you solve -2(x+5)=4
fenix001 [56]

Answer:

<h2>x = -7</h2>

Step-by-step explanation:

-2(x+5)=4\qquad\text{divide both sides by (-2)}\\\\\dfrac{-2\!\!\!\!\diagup(x+5)}{-2\!\!\!\!\diagup}=\dfrac{4\!\!\!\!\diagup^2}{-2\!\!\!\!\diagup_1}\\\\x+5=-2\qquad\text{subtract 5 from both sides}\\\\x+5-5=-2-5\\\\x=-7

5 0
3 years ago
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1000 gram piece of metal has a volume of 25 ml what is it’s density
Masja [62]

Answer:

0.0014126 I guess

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3 years ago
1+1+1+1+1+1+1+1+1+1+18+18+18+18+18+18+80+80+80+80+100+100+100+100+1000
Darya [45]

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Step-by-step explanation:

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With a detailed explanation from the internet<br> 1/(x-5)+3/(x+2)=4
irga5000 [103]

Answer:

\boxed{ \sf x=\dfrac{4\pm\sqrt{43}}{2}}

Explanation:

\rightarrow \sf \dfrac{1}{x-5}+\dfrac{3}{x+2}=4

<u>make the denominators same</u>

\rightarrow \sf \dfrac{1(x+2)}{(x-5)(x+2)}+\dfrac{3(x-5)}{(x+2)(x-5)}=4

<u>join the fractions together</u>

\rightarrow \sf \dfrac{x+2+3x-15}{(x-5)(x+2)}=4

<u>cross multiply</u>

\rightarrow \sf x+2+3x-15=4(x-5)(x+2)

<u>simplify</u>

\rightarrow \sf 4x-13=4x^2-12x-40

<u>group the variables</u>

\rightarrow \sf 4x^2-16x-27 = 0

<u>use quadratic formula</u>

\rightarrow \sf x = \dfrac{-\left(-16\right)\pm \sqrt{\left(-16\right)^2-4\cdot \:4\left(-27\right)}}{2\cdot \:4}

<u>simplify the following</u>

\rightarrow \sf x=\dfrac{4\pm\sqrt{43}}{2}

7 0
2 years ago
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Need help please help
azamat

Answer:

B

Hope you get it right! :)

Step-by-step explanation:

7 0
3 years ago
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