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almond37 [142]
3 years ago
9

Which of the following is the best estimate of 31% of 15? 7.5 3 5 4

Mathematics
2 answers:
nekit [7.7K]3 years ago
5 0
The answer should be 4.65 but i rounded it to 5


Alex777 [14]3 years ago
3 0
Th answer is 5 because 31% of 15 is 4.65
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Ugo [173]
1.) 144
2.) 8
3.) 262.5
4.) 36
5.) 630
6.) 440
8 0
3 years ago
Cody and Jordan were selling Flamin' Hot Cheetos to raise money for the Tornados. Cody sold 5 bags of Cheetos for every 3 bags J
andrew11 [14]

They sold 160 and for each 5 bags sold by one 3 bags are sold by another 3+5=8.

160/8=20.

Now Since Cody Sold 5 Bags for every 3 bags for Jordan

5x20=100

3x20=60

Cody Sold 100 and Jordan Sold 60

7 0
3 years ago
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What is the inequality for the statement Johnny can work no more than 25 hours each week?
Greeley [361]
J less than or equal to 25(w) ? Idk if that’s right but that’s what I would do
8 0
3 years ago
Veronica has been saving dimes and quarters she has 110 coins in all and the total value is 18.50 how many dimes and quarters do
Lady_Fox [76]

This problem can be solved by the chicken rabbits method or you can just do simple algebra.

I.) Chicken and rabbits method

First assume all 110 coins are dimes and none are quarters.

We will have a total value of 11 dollars

Now for each dime we switch out for a quarter, we adds 15 cents to the total value.

18.50-11=7.50 dollars

There are 750/15=50 group of 15 cents in the 7 dollars and 50 cents.

This also meant that we need to switch out 50 dimes for 50 quarters.

So we have 50 quarters.

That first method is very good and very quick once you get the hang of it, now I'm going to show you the algebraic way to solve this.

Let's say there are x dimes and y quarters.

Set up equation

x+y=110

10x+25y=1850

Now solve multiply first equation by 10

10x+10y=1100

subtract

15y=750

y=50

Now we set the numbers of quarters to y so the answer is 50 quarters.

I personally recommend using algebra whenever you can because the practice is very important and you will eventually get really fast at setting up and solving equations. The first method is faster in this case but the second is more generalize, hope it helps.

6 0
3 years ago
I need help on this question ​
Musya8 [376]
1. added four to both sides
2. divided both sides by two
3 0
3 years ago
Read 2 more answers
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