1. Integers are not closed under which operation?

Mathematics

1 answer:

velikii [3]3 years ago

4 0

Answer:

Integers are not closed under the DIVISION operation

Example:

(9 ÷ 2 = 4½)

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25 points plz help!!! Calculate the equation of the line through the points (-1, 1), (4, 0), and (24, -4)

Mila [183]

So if the line is linear we can use slope intercept form to find the equation of the points: y=mx+b

To calculate m, the slope we subtract two of the points (I’ll use the first two):

(-1, 1)
(4, 0)

This equals 0-1/4+1, which simplifies to -1/5

So the slope is -1/5 and we can put that into slope intercept form along with a point to get b, the y-intercept.

So, y=-1/5x+b

Now we substitute x and y with a point.

1=-1/5(-1)+b
1=1/5+b
b=4/5

So the equation is:
y=-1/5x+4/5

I hope this helps!

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Literal equation S=2 (lw+lh+wh) solve for w

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$S=2\left( lw+lh+wh \right) \\ \\ S=2\left\{ w\left( l+h \right) +lh \right\} \\ \\ \frac { 1 }{ 2 } \cdot S=2\left\{ w\left( l+h \right) +lh \right\} \cdot \frac { 1 }{ 2 } \\ \\ \frac { S }{ 2 } =w\left( l+h \right) +lh\\ \\ w\left( l+h \right) =\frac { S }{ 2 } -lh\\ \\ \frac { 1 }{ \left( l+h \right) } \cdot w\cdot \left( l+h \right) =\frac { 1 }{ \left( l+h \right) } \left( \frac { S }{ 2 } -lh \right)$

$\\ \\ w=\frac { 1 }{ \left( l+h \right) } \left( \frac { S }{ 2 } -lh \right)$

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3 years ago

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Answer:

4.49

Step-by-step explanation:

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Georgia [21]

$\frac{5}{7r}-\frac{2}{7r}$

You have two fractions with the same (common) denominator, so you subtract the numerators and put that over the common denominator.

$\frac{5}{7r}-\frac{2}{7r}=\frac{5-2}{7r}=\frac{3}{7r}$

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2 years ago

Jasmine goes bowling. She has $25.00 spend. She spends $4.50 to rent shoes. She spends $2.50 for each game she

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Answer:

25.00 < (with a line under it) 4.50+2.50x

Step-by-step explanation:

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