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2 years ago

Is 8/24 = 21/63 a proportion

Mathematics

2 answers:

ira [324]2 years ago

7 0

Step-by-step explanation:

8/24 = 21/63 = 1/3

yes it's a proportion

Flura [38]2 years ago

5 0

Yes it is a proportion

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LiRa [457]

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2 years ago

a stack of congruent blocks, piled one on top of the other, is 4/5 foot high. Each block is 1/10 foot tall. How many blocks are

kvasek [131]

8 blocks because 2/10=1/5 so if they total 4/5 then 2/10+2/10+2/10+2/10=8/10=4/5

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2 years ago

What two numbers add to be 6 and multiply to be 15

yarga [219]

$\displaystyle \bf \\
x_1+x_2=6\\\\
x_1\cdot x_2=15\\\\
\Longrightarrow~~x^2-6x+15=0\\\\
x_{12}=\frac{-b\pm\sqrt{b^2-4ac}}{2a}=\frac{6\pm\sqrt{36-60}}{2}=\\\\
=\frac{6\pm\sqrt{-24}}{2}=\frac{6\pm2\sqrt{-6} }{2}=3\pm i\sqrt{6}\\\\
x_1=\boxed{3-i\sqrt{6}}\\\\
x_2=\boxed{3+i\sqrt{6}}\\\\
\texttt{Verify:}\\\\
x_1+x_2=3-\underline{i\sqrt{6}}+3+\underline{i\sqrt{6}}=3+3=6~~correct\\\\
x_1\cdot x_2=(3-i\sqrt{6})(3+i\sqrt{6})=3^2-(i\sqrt{6})^2=9+6=15~~correct$

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3 years ago

Two rectangles are similar. If the height of the first rectangle is 3 inches, and the height of the second rectangle is 9 inches

Dovator [93]

It is 3X as long
good luck :)

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3 years ago

Read 2 more answers

Solve the inequality 1.4z + 2.2 > 2.6z − 0.2

forsale [732]

Answer:

z < 2

Step-by-step explanation:

1.4z + 2.2 > 2.6z - 0.2

add 0.2 to both sides

1.4z + 2.4 > 2.6z

subtract 1.4z from both sides

2.4 > 1.2z

divide by 1.2

2 > z

4 0

2 years ago

Read 2 more answers