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2 years ago

William had $240. Michael had $420. What was as the ratio of William's money to Michael's money ? PLEASE SHOW ALL STEPS.

2 answers:

4 0

William has $240 to Michael's $420
this can be written in a ratio as 240 : 420
which can then be reduced to

24:42
12:21
4:7

kvv77 [185]2 years ago

4 0

When you see ratio, think fraction. So, we want :

William's money / Michael's money

They tell us that William has $280 and Michael has $420. Thus,

280 / 420

Now we need to simplify. both 280 and 420 share a factor of 140. Thus,

280/420 = (140 * 2) / (140 * 3) = 140/140 * 2/3 = 1 * 2/3 = 2/3

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Answer:

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3 years ago

A face of a solid is

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Answer:

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Step-by-step explanation:

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2 years ago

PLEASE HELP?! IM SO CONFUSED!!

seropon [69]

Answer:

Step-by-step explanation:

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1 year ago

Describe and correct the error(s) made in each of the problems below.

ladessa [460]

Answer:

$\displaystyle \frac{1-x}{(5-x)(-x)} =-\frac{x-1 }{ x(x-5)}$

$\displaystyle \frac{5}{s}\times \frac{2}{5} =\frac{2}{s}$

Step-by-step explanation:

<u>Errors in Algebraic Operations </u>

It's usual that students make mistakes when misunderstanding the application of algebra's basic rules. Here we have two of them

When we change the signs of all the terms of a polynomial, the expression must be preceded by a negative sign
When multiplying negative and positive quantities, if the number of negatives is odd, the result is negative. If the number of negatives is even, the result is positive.
Not to confuse product of fractions with the sum of fractions. Rules are quite different

The first expression is

$1-x / (5-x)(-x)=x-1 / x(x-5)$

Let's arrange into format:

$\displaystyle \frac{1-x}{(5-x)(-x)} =\frac{x-1 }{ x(x-5)}$

We can clearly see in all of the factors in the expression the signs were changed correctly, but the result should have been preceeded with a negative sign, because it makes 3 (odd number) negatives, resulting in a negative expression. The correct form is

$\displaystyle \frac{1-x}{(5-x)(-x)} =-\frac{x-1 }{ x(x-5)}$

Now for the second expression

$5/s+2/5=2/s$

Let's arrange into format

$\displaystyle \frac{5}{s}+\frac{2}{5} =\frac{2}{s}$

It's a clear mistake because it was asssumed a product of fractions instead of a SUM of fractions. If the result was correct, then the expression should have been

$\displaystyle \frac{5}{s}\times \frac{2}{5} =\frac{2}{s}$

6 0

2 years ago

What is 0.95 rounded to the nearest hundread?

sasho [114]

0.95 rounded to the nearest hundredth (I assume that's what you mean) would still be 0.95. Since I saw your other question, I think you're looking for 0.095 rounded to the nearest hundredth, which is 0.10.

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2 years ago