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3 years ago

How can I work out 30% of (blank) is 60?

Mathematics

1 answer:

mariarad [96]3 years ago

4 0

$0.3x=60\\
x=200$

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729 = __ to the 3rd power

TEA [102]

The answer is 9 because 9 to the second power is 81 and 81*9 = 729 :)))
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3 years ago

How do you write 43% as a decimal?

vesna_86 [32]

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3 years ago

Read 2 more answers

Ed’s rental charges a flat fee of $5 plus $2 per hour to rent a pair of skates.

zavuch27 [327]

Flat doesn't change
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to graph
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go 1 right and 2 up, that is another point

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3 years ago

How can you use proportional reasoning to solve problems?

qwelly [4]

Proportional thinking analyzes proportions to address questions. We can utilize relative thinking to tackle a few inquiries straightforwardly, for example, which size of clothing cleanser is the least expensive per load, for sure the components of the model vehicle ought to be.

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2 years ago

I did 3 over 7 then 8 over x. I'm getting decimals. ‍♀️

julia-pushkina [17]

Answer:

The length of side b is 9.

Step-by-step explanation:

Triangles are similar if they have the same shape, but can be different sizes.

When two figures are similar, the ratios of the lengths of their corresponding sides are equal.

If you know that two objects are similar, you can use proportions and cross products to find the length of an unknown side. We know that the triangle $ABC$ is similar to the triangle $XYZ$ . Therefore the following relation must be true:

$\frac{AB}{AC} =\frac{XY}{XZ}$

We know that side $AB$ is equal to 8, side $AC$ is equal to b, side $XY$ is equal to $2\frac{2}{3}$ , and side $XZ$ is equal to 3.

Substituting these values into the above relation and solving for b we get that:

$\frac{8}{b} =\frac{2\frac{2}{3} }{3}\\\\\mathrm{Convert\:mixed\:numbers\:to\:improper\:fractions}:\quad 2\frac{2}{3}=\frac{8}{3}\\\\\frac{8}{b}=\frac{\frac{8}{3}}{3}\\\\8\cdot \:3=b\frac{8}{3}\\\\24=b\frac{8}{3}\\\\8b=72\\\\b=9$

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3 years ago