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3 years ago

Which ratio is larger 10 : 21 or 21 : 93? (plz show method)

2 answers:

7 0

10 : 21 OR 21 : 93 ?

Simply change everything into fractions.

Basically, take out the ":" and turn those into fraction symbols (/)

So, 10:21 turns into 10/21

And, 21:93 turns into 21/93

Then, turn our fractions into decimals.

To do so, we simply get a calculator (or do it by hand) and divide 10 by 21 for our first fraction (10/21)

10 ÷ 21 = 0.4761

Round this to the nearest hundredth.

0.4761 = 0.48

Then, we do the same for our second fraction (21/93)

21 ÷ 93 = 0.2258

But, we want it to only be 2 decimal points, so simply round it to the nearest hundredth value.

0.2258 = 0.23

Then, compare our two decimals.

Which is bigger...?

0.48 OR 0.23

Obviously, 0.48 is the larger number.

So, 10:21 is the larger ratio.

~Hope I helped!~

malfutka [58]3 years ago

6 0

So I would change the form of the two ratios. They can also be represented as fractions.

10:21 ⇒ 10/21 = 0.48

21:93 ⇒ 21/93 = 0.23

Therefore, (since 0.48 > 0.23) the ratio 10:21 is greater

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igor_vitrenko [27]

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8 0

4 years ago

So my teacher sucks at explaining this so I need someone's help to solve it.

galben [10]

So x is a variable which is just character representing a number. We want to find x. To do this we want to get X by itself on one side of the equation. In this case/ we just need to divide both side by -4. Whatever you do to one side, you must do to the other. This gives us X = -12. To check yourself just plug your answer back into the equation to see if its right. -4(-12) = 48. You have successfully solved for X.

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3 years ago

What is 10xy - 15y in factored form

Oduvanchick [21]

The factored form of 10xy - 15y is 5y(2x - 3)

Solution:

Given that, we have to write the given expression in factored form

Given expression is:

10xy - 15y

To find the factored form, let us first find the greatest common factor of 10 and 15

The factors of 10 are: 1, 2, 5, 10

The factors of 15 are: 1, 3, 5, 15

Then the greatest common factor is 5

Thus, factor out 5 from given expression

$10xy - 15y = 5(2xy - 3y)$

Now factor out the common term "y"

$10xy - 15y = 5(2xy - 3y) = 5y(2x-3)\\\\10xy - 15y = 5y(2x-3)$

Thus the factored form is found

3 0

3 years ago

If the population of a town grew 21% up to 15,049, what was the population last year?

katrin2010 [14]

15,049 x .21 = 3,160
subtract: 15,049 - 3,160 = 11, 888

3 0

3 years ago

Which point-slope equation represents a line that passes through (3,-2) with a slope of -4/5?

Viefleur [7K]

Answer:

y + 2 = -4/5 (x - 3)

Step-by-step explanation:

y - y1 = m (x - x1). Put in your points for y1 and x1, and always remember to flip your signs.

unfortunately, I don't know why that isn't one of your answers, so sticking with the positive 2 I would choose y+2=- (- 3) if I were you. Looks like the -4/5 disappeared somehow?

Hope this helps

8 0

3 years ago