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4 years ago

How do I simplify this expression 4(2m+5) - 6(2m+3)

Mathematics

1 answer:

Oksanka [162]4 years ago

4 0

Answer:

-4m + 38

Step-by-step explanation:

Multiply out 4(2m+5) first

8m + 20

then multiply out 6(2m+3)

12m + 18

now subract them

8m + 20 - 12m + 18

rearrange the equation

8m - 12m + 20 +18

-4m + 38

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-5 1/2 -4 1/4 - 6 3/4

BlackZzzverrR [31]

For this case we have an expression of mixed numbers:

$5 \frac {1} {2} = \frac {2 * 5 + 1} {2} = \frac {11} {2}\\4 \frac {1} {4} = \frac {4 * 4 + 1} {4} = \frac {17} {4}\\6 \frac {3} {4} = \frac {4 * 6 + 3} {4} = \frac {27} {4}$

Rewriting the expression we have:

$- \frac {11} {2} - \frac {17} {4} -\frac {27} {4} =$

Remember that equal signs are added and the same sign is placed.

$- \frac {11} {2} - \frac {44} {4} =\\- \frac {11} {2} - \frac {22} {2} =\\- \frac {33} {2}$

Answer:

$- \frac {33} {2}\\-(15 \frac {3} {2})$

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3 years ago

M=1/5 y-intercept is 0,4

ValentinkaMS [17]

Answer:

y = $\frac{1}{5}$ x + 4

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Here m = $\frac{1}{5}$ and c = 4, thus

y = $\frac{1}{5}$ x + 4 ← equation of line

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4 years ago