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ikadub [295]
3 years ago
7

An item costs $20 and sells for $50.

Mathematics
1 answer:
Helga [31]3 years ago
8 0

Step-by-step explanation:

50-20=30 rate of markup

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One car travel 56 miles per hour and another travels 31 miles per hour. If they start from the same place at the same time and t
Vitek1552 [10]

After 3 hours, the faster car will be 75 miles ahead of the slower car.

Step-by-step explanation:

Given,

Speed of first car = 56 miles per hour

Speed of second car = 31 miles per hour

Let,

x be the number of hours.

Distance covered by first car = Speed * time = 56x

Distance covered by second car = 31x

According to given statement;

Difference between distance covered by both cars = 75 miles

Distance of faster car - Distance of slower car = 75 miles

56x-31x=75\\25x=75

Dividing both sides by 25

\frac{25x}{25}=\frac{75}{25}\\x=3

After 3 hours, the faster car will be 75 miles ahead of the slower car.

Keywords: subtraction, division

Learn more about subtraction at:

  • brainly.com/question/1329620
  • brainly.com/question/1332667

#LearnwithBrainly

4 0
3 years ago
What is the solution to the system below? <br> 3x + y = 11<br> y = x + 3
alexgriva [62]

Answer:

x = 2

y = 5

Step-by-step explanation:

3x + y = 11 equation (1)

-x + y = 3 multiply this equation by -1

x - y = -3 equation (2)

by adding 2 equations

4x = 8

x = 2

by sub. in Equation (2)

2 - y = -3

y = 2+3

y = 5

5 0
3 years ago
I don’t know how to do this
lina2011 [118]
What is the question you need help on?
3 0
3 years ago
I need help with this pls ASAP
Andrei [34K]
K is the right answer for the problem!
6 0
3 years ago
What is the reciprocal of 9/10 as a mixed numeral?
Alika [10]
Reciprocals are technically flipped fractions. So it would be 10/9. 9 goes into ten one time, so it's 1 1/9.
5 0
3 years ago
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