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3 years ago

8+4m=9m-7 check solution

Mathematics

2 answers:

ella [17]3 years ago

4 0

$8+4m=9m-7 \\\\ 4m-9m=-7-8 \\\\ -5m=-15 \\\\ \boxed{m=\frac{-15}{-5}=3}$

Karo-lina-s [1.5K]3 years ago

3 0

$8+4m=9m-7\ \ \ \ |subtract\ 4m\ from\ each\ side\\\\
8=5m-7\ \ \ \ \ |add\ 7 \ to \ each\ side\\\\
15=5m\ \ \ \ |divide\ by\ 5\\\\
m=3\\\\Solution\ is\ m=3.$

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Sauron [17]

Answer:

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Step-by-step explanation:

ok. So the numbers are 5, -3, -12, and 9.

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In negatives, the bigger the number is, the number is smaller.

So we first put

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and you obviously know that 5 is less than 9. try it out. 9-5 =4 which is positive

So then you put 5, 9

And our full answer is

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3 years ago

Last year 762 students voted in the student council election at San Bruno Middle School this year 721 students voted to the near

Soloha48 [4]

Answer:

Percent change = 5.4%

Step-by-step explanation:

Given:

Number of students voted last year = 762

Number of students voted this year = 721

Change in the number of students who voted from last year to this year is given by the difference of their number. This gives,

Change in the number of students that voted = 762 - 721 = 41

Now, percentage change in the number of students that voted is given as:

$\textrm{Pecent change}=\frac{\textrm{Change in number}}{\textrm{Number last year}}\times 100\\\\\textrm{Pecent change}=\frac{41}{762}\times 100\\\\\textrm{Pecent change}=\frac{4100}{762}=5.38\%\approx 5.4\%$

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