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Margarita [4]
3 years ago
7

I need help solving this math problem.... -8(4n-3)=280

Mathematics
2 answers:
grigory [225]3 years ago
5 0

<u><em>n=-8 is the correct answer. </em></u>

<u><em>First you had to divide by negative eight (-8) from both sides of equation. </em></u>

And it gave us ⇒ \frac{-8(4n-3)}{-8}=\frac{280}{-8}.

Then simplify.

And it gave us ⇒ 4n-3=-35

You can also add by three (3) from both sides of equation.

And it gave us ⇒ 4n-3+3=-35+3

Simplify.

And it gave us ⇒ 4n=-32

Then divide by four (4) from both sides of equation.

And it gave us ⇒ \frac{4n}{4}=\frac{-32}{4}.

And finally, you had to simplify.

And it gave us the final answer is ⇒ n=-8\\

Hope this helps! And thank you for posting your question at here on brainly, and have a great day. -Charlie

solong [7]3 years ago
4 0

-8(4n-3)=280\\\\4n-3=-35\\\\4n=-32\\\\n=-8

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Viefleur [7K]

Answer:7.25

Step-by-step explanation: when you multiply 7.25 both sides the 7.25 on the left will cancel out the 7.25x leaving x = 29

3 0
3 years ago
Which algebraic expression is a polynomial? 3m2n-2m/n+1/n
Lesechka [4]

Answer:

d) 7mn+\frac{3m}{2}+\frac{5n}{4}

Step-by-step explanation:

Which algebraic expression is a polynomial?

a)3m^2n-\frac{2m}{n}+\frac{1}{n}  \\b)\frac{2mn}{5}-\frac{\sqrt{m} }{4} +4m^5\\c)\frac{4m^3}{n^2}-3mn^5+\sqrt{8}\\d)7mn+\frac{3m}{2}+\frac{5n}{4}

Answer: A polynomial is an expression with variables and coefficients separated by addition and subtraction. The following are used when determining if an expression is a polynomial:

i) Variables of a polynomial must not have negative exponent.

ii) Variables of a polynomial must not have fractional exponent.

iii) Dividing by an exponent is not allowed

iv) Exponent radicals are not allowed.

a) 3m^2n-\frac{2m}{n}+\frac{1}{n} is not a polynomial because dividing by an exponent is not allowed.

b) \frac{2mn}{5}-\frac{\sqrt{m} }{4} +4m^5, is not a polynomial because exponent radicals are not allowed (√m)

c) \frac{4m^3}{n^2}-3mn^5+\sqrt{8} is not a polynomial because dividing by an exponent is not allowed.

d) 7mn+\frac{3m}{2}+\frac{5n}{4} is a polynomial

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3 years ago
Factor completely: 4x2 + 25x + 6
IceJOKER [234]
(x + 6)(4x + 1) 
x times 4x = 4x^2 
x times 1 = x 
6 times 4x = 24x 
6 times 1 = 6 
<span>And finally, by adding like terms, 4x^2 + 25x + 6 

I hope this helps you! Good luck :)</span>
7 0
3 years ago
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zavuch27 [327]

Answer:

i can't understand it as well

7 0
3 years ago
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andreev551 [17]

1, yes by the rule of S:A:S

2. yes by the rule of aas

5. yes by the rulee of side-hypnotuse-angle

4 yes by side angle side

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