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Arturiano [62]
1 year ago
7

PLEASE HELP!!! WILL MARK BRAINLIEST!!!

Mathematics
2 answers:
kirza4 [7]1 year ago
5 0

Answer:

18

Step-by-step explanation:

Important things to know:

“PEMDAS” is parenthesis, exponents, multiplication, division, addition, subtraction

equation: \frac{2(x^{2}+18) }{x}

If x = 3, than

→  \frac{2((3)^{2}+18) }{3}

after plugging in 3, we solve inside the parenthesis

3 to the power of 2 is 3 x 3 = 9

→    \frac{2(9 + 18)}{3}

than you add the remaining things in the parenthesis where 9 + 18 = 27

→    \frac{2(27)}{3}

multiply 27 by 2 = 54

→    \frac{54}{3} = 18

divided 54 by 3 to get 18 as your final answer

Learn more about PEMDAS here: brainly.com/question/36185

MAVERICK [17]1 year ago
3 0

Answer:

18

Step-by-step explanation:

Replace x with 3 in the equation.

\frac{2(3^2+18)}{3}

Solve the exponent and what is in the parenthesis.

\frac{2(27)}{3}

Multiply.

\frac{54}{3}

Divide.

18

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Debora [2.8K]
This is exactly like the one with the 'n's that you posted yesterday.
I guess you didn't get enough help on that one to understand it.

<span><u>7k/8 - 3/4 - 5k/16 = 3/8</u>

3/4 is the same as 6/8.
Add it to each side of the equation:

7k/8         - 5k/16 = 9/8

Multiply each side by 16 :

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Add up the 'k's on the left side:

9k = 18

From this point, you can proceed directly to the numerical value of 'k'
if you need it.<u />

In your question, you said you need help, and I showed you how to
strip the problem down so that the only thing left is ' k = something '.
Giving you the answer is no help.  Nobody actually needs the answer.
</span>


8 0
3 years ago
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The total cost after tax to repair Deborah's computer is represented by0.08(50h)+50H, where h is the number of hours it takes to
katrin2010 [14]

Answer:

.08(50h) Because if the tax rate is 8%, then that is 1.08% of 50h.

Step-by-step explanation:

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3 years ago
Help please I would really really appreciate it!!!i need someone kind hearted and that cares to help!!!
Free_Kalibri [48]
#5) 7.065 sq. ft.
#6) 36 ft
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Explanation
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#6) The radius is 18 inches, so the diameter is twice that:  18*2 = 36 inches.  Converting this to feet, we have 36/12 = 3 feet.  Each stone is 3 feet across.  Laying 12 of them against each other would give us a total length of 12*3 = 36 feet.

#7) The radius of the entire mirror with frame is 20/2 = 10.  The area of the entire mirror with frame is A=3.14(10²) = 3.14(100) = 314 in².
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The difference between the two will give the area of the frame:
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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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