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mel-nik [20]
3 years ago
9

What is the solution to this equation? 8x - 5 (x-3) = 18

Mathematics
1 answer:
Kaylis [27]3 years ago
3 0

Answer:

x=1

Step-by-step explanation:

We distribute the negative 5 to x minus three to get 8x-5x+15=18. Then, we cancel out the 15 by subtracting it from both sides. This leaves us with 8x-5x=3. When we subtract, we get 3x=3, and when we divide both sides by 3, we get x=1. Hope this helps :)

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Answer:

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Step-by-step explanation:

6 0
3 years ago
A student earned grades of 84, 78, 84, and 72 out of 100 on her four regular tests. She scored 78% on the final exam and 86% on
adelina 88 [10]

If the student received marks of 84, 78, 84, and 72 on her four normal tests, her weighted mean grade is 81.2 percent.

<h3>What is mean?</h3>

The mean is described as a single number that indicates either the closed value for each item in the collection of data or the mean value for the whole set of data.

On her four regular tests, a student had grades of 84, 78, 84, and 72 out of 100. She received 86 percent on her class projects and 78 percent on the final test.

You may compute the weighted mean as follows:

\rm W_m= 0.4 \times ( \frac{84+78+84+72}{4} )+0.3 \times 78 +0.1 \times 86 + 0.2 \times 87 \\\\ W_m=  81.2 \%

Hence, if the student had marks of 84, 78, 84, and 72 on her four normal tests, her weighted mean grade would be 81.2 percent.

To learn more about the mean refer;

brainly.com/question/22871228

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5 0
2 years ago
Write the equation of the line that passes through the point (7,-2) and has a slope of
konstantin123 [22]
I only know how to do a, so i hope i can help a little bit.
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6 0
3 years ago
Read 2 more answers
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SCORPION-xisa [38]

Answer:

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Step-by-step explanation:

so where trying to find the unknown total of coins so where gonna call that x

then we will make an equation 5% * x= 7

then to make it easier to solve we will convert 5% to a decimal   .05

and finally to find the answer we will divide both sides by .05

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7 0
3 years ago
What is the LCM of 3and 6​
kupik [55]

Answer:

L.c.m of 3 and 6 is 6

8 0
3 years ago
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