Find an equation of variation in which y varies directly as x and y = 0.4 when x = 0.5. then find the value of y when x=15

Mathematics

1 answer:

Advocard [28]4 years ago

6 0

If x= 0.5 y=0.4
then x=15 y=0.4*15/0.5 = 12

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a group of friends went to lunch. the bill, before sales tax and tip, was $37.50. a sales tax of 8% was added. the group then ti

valentina_108 [34]

First, there was $37.50.
Then, there was a tax of 8%.
Then, there was a tip of 18%.
Since the tip is after the tax, it's not going to affect it, and we can essentially ignore it.

The real question here is just <em>what is 8% of $37.50?</em>

To find the percent of something, first you need to put the percent as a decimal.

8% in decimal form is 0.08 (If you think about it literally, they're both 8 hundredths)

Finally, just multiply the percent in decimal form by the number.

37.50 dollars × 0.08 = 3 dollars.<em />

6 0

3 years ago

Read 2 more answers

I need help plz #12 plz I don’t understand

Trava [24]

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