3 years ago

Can someone help me with this?

Mathematics

1 answer:

Marina86 [1]3 years ago

3 0

Whichoneplease or all of them

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2(3x + 2) = 2x - 1+x.

andrew-mc [135]

Answer:

x = -5/3

Step-by-step explanation:

Hope this helps!

Best of luck!♥

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3 years ago

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Finding the inverse function for f(x)=1/x^2

Anna [14]

to get the inverse of any expression, we start off by doing a quick switcheroo on the variables and then solve for "y".

$\stackrel{f(x)}{y}=\cfrac{1}{x^2}\implies \stackrel{\textit{quick switcheroo}}{x=\cfrac{1}{y^2}}\implies y^2=\cfrac{1}{x}\implies y=\sqrt{\cfrac{1}{x}}\implies \stackrel{f^{-1}(x)}{y}=\cfrac{1}{\sqrt{x}}$

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3 years ago

Three times a number plus five equal twenty

Bezzdna [24]

Let the number be x
3x + 5 = 20
3x = 20 - 5
x = 15/3
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3 years ago

16. Solve the linear equation.<br><br> 12x– 2 = 2x + 18

tino4ka555 [31]

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x=2

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

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The ratio of the measures of the angles in cat is 2:7:9. find the measure of the smallest angle.

iren2701 [21]

Answer:

20º

Step-by-step explanation:

Total parts

2 + 7 + 9 = 18

Value of each part given 180º in a triangle

180 / 18 = 10º

Smallest angle

2 * 10 = 20º

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