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3 years ago

Why can you use cross products to solve the proportion 18/5=x/100

2 answers:

7 0

18/5 = x/100
1800 = 5x
----- -----
5 5
360 = x

You can use proportion to solve your equation to figure out the x value so you have corresponding ratios

guajiro [1.7K]3 years ago

3 0

Answer:

We can use cross products to solve proportion to get the value of x.

Step-by-step explanation:

The given proportion is:

$\frac{18}{5}=\frac{x}{100}$

On cross multiplying, we get

$x=\frac{18\times100}{5}$

$x=18{\times}20$

$x=360$

We can use the given proportion and by cross multiplying we can find the value of x that is 360.

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Equivalent Fractions for 1/3:

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100 points!!! Multi-Step Equations with Distributive Property

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An example below

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4 years ago

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Estimate using a rate per 100 of 74% of 315. 89% of 195

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1. Given numbers:
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4 years ago

Which definite integral approximation formula is this: the integral from a to b of f(x)dx ≈ (b-a)/n * [<img src="https://tex.z-d

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x₂ = a + 2(b - a)/n

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(G(b) - G(a) ) / (b - a)

If G(x) happens to be the antiderivative of a function g(x), then this is the same as the average value of g(x) on the same interval,

$g_{\rm ave}=\dfrac{G(b)-G(a)}{b-a}=\dfrac1{b-a}\displaystyle\int_a^b g(x)\,\mathrm dx$

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