Question

You want to burn 380 Calories during 40 minutes of exercise.You burn about 8 calories per minute inline skating and 12 calories per minute swimming.How many minutes should you spend inline skating and swimming?

Answer 1

47.5

Answer 2

@cvliboi that makes no sense? Im 100% thats not the right answer because theres supposed to be 2 answers

Answer 3

I had x = skating and y= swimming
so I took
8x + 12y =380
but where do I put the 40 minutes and how do I figure it?

Answer 4

you got to find that out

Answer 5

Im so confused now >_<

Answer 6

Please dont give me the answer but guide me so that i can learn

Answer 7

I had x = skating and y= swimming
so I took
8x + 12y =380
but where do I put the 40 minutes and how do I figure it? NOW can you finish? (hint: you can solve the second equation for x: x = 40 - y Then substitute 40 - y for x in the first equation)

Answer 8

The set of equations should look like this.

8x + 12y = 380
x + y = 40

Answer 9

x and y are amounts of minutes and 40 is the total.

Answer 10

the combination of calories per given minutes are 8x and 12y, which total up to 380.

Answer 11

Now solve for x and y.

Answer 12

i got it from here thanks :)

Answer 13

Ok so:

At first they say you watnt o burn 380 calories: that is your total of calories
= 380

It's a 40 minute exercise: 40 minutes total

= 40

Answer 14

you want to*

Answer 15

The calories you burn from skating and swimming are going towards your total calories of 380

Answer 16

So for for skating represent it at x and for swimming represent it as 12.

x + y

8x + 12y

8x + 12y = 380

Answer 17

it as x*

Answer 18

x and y represent the minutes you spend skating and swimming so they are going towards total minutes: 40

x + y = 40

Answer 19

hope that helps :P

Answer 20

its does thanks