2 years ago

Write an expression that represent the sum of r and 7

Mathematics

1 answer:

Butoxors [25]2 years ago

3 0

"The sum of r and 7" can be represented as r + 7

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2 years ago

Is 2:4 and 3:8 proportion or not?

serg [7]

Answer:

Step-by-step explanation:

While these values are close, they are not equal, so I know the original fractions cannot be proportional to each other. So my answer is: The fractions are not

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1 year ago

Determine whether The given segments have the same length. Justify your answer

Semenov [28]

We know the distance formula is

$\sqrt{ (x_{2}-x_{1})^2+ (y_{2}-y_{1})^2 }$

Here A( -4,2) and B(1,4)

So length of AB

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Also C(2,1)

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= $\sqrt{(2-1)^2+(-1-4)^2} =\sqrt{1^2+(-5)^2} =\sqrt{26}$

So we can see that length of AB is not equal to length of BC

11.

Now AB = $\sqrt{29}$

Also C(2,-1) & D(4,4)

Length of CD

= $\sqrt{(4-2)^2+(4-(-1)) ^2} =\sqrt{2^2+5^2} =\sqrt{29}$

Yes AB = CD

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3 years ago

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2 years ago

Operations with fractions

matrenka [14]

Step-by-step explanation:

$\frac{2}{3} - \frac{1}{5} = \frac{10}{15} - \frac{3}{15} = \frac{7}{15}$

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2 years ago