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4 years ago

Please help: 3x + 4x - 3 = 81 solve for x

Mathematics

2 answers:

julia-pushkina [17]4 years ago

7 0

Hope this helps you!!

harina [27]4 years ago

3 0

3x + 4x - 3 = 81

Combine like terms on the left side of the equation. The like terms are 3x and 4x because they contain the same variable x. Add them together then rewrite the equation.

7x - 3 = 81

Add 3 to both sides of the equation to isolate the variable x on one side of the equation.

7x = 84

Divide both sides of the equation by 7 to solve for x.

$\boxed{x=12}$ is your answer.

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Help is needed<br>-15/20 in lowest terms

Oksi-84 [34.3K]

Hi,

-15/20

find the GCF of both numbers:

15: 1,3,5,15
20: 1,2,4,5,10,20

The GCF is 5.

Divide the numerator and denomiator by 5-
-15/5 = 3
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answer is -3/4

makes sense?

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3 years ago

NO BOTS OR SPAM PLEASE

storchak [24]

Answer:

Step-by-step explanation:

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3 years ago

Read 2 more answers

Given f(x) = 13x - 9, find (f(x + h) - f(x))/h and simplify the result.

EleoNora [17]

Answer:

Step-by-step explanation:

Given

f(x) = 13x - 9 , then

$\frac{f(x+h)-f(x)}{h}$

= $\frac{13(x+h)-9-(13x-9)}{h}$

= $\frac{13x+13h-9-13x+9}{h}$

= $\frac{13h}{h}$

= 13

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3 years ago

video streaming company a charges a one-time $40 membership fee and $2 per video stream. video streaming company b charges a one

ExtremeBDS [4]

Answer:

Company A:

c = 40 + 2s

Company B:

c = 20 + 4s

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Step-by-step explanation:

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3 years ago

Graph the inequality 4x+5y>20

murzikaleks [220]

$y\ \textgreater \ - \frac{4x}{5}+4$ is the answer I can also give you the graph to if you need it, but that's how you would graph it. : ) Let me know if you need the graph

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4 years ago