Help please this is due in 30 mins! i’ll give brainliest!

nikklg [1K]

Answer:

h = 7

t = 11

Step-by-step explanation:

5t + h = 62

2t + h = 29

h+5t = 62

h+2t = 29

h = 7

t = 11

8 0

3 years ago

Robert was able to travel 292 miles in 4 hours and uses 38 l of gasoline. if gas costs $2.09 per gallon, how much did the trip c

Butoxors [25]

cost of 1 gallon gas = $2.09

cost of 3.785 litres gas = $2.09 ( 1 gallon = 3.785 litres)

cost of 1 litre gas = 2.09/3.785

cost of 18 litres gas = 2.09/3.785 * 18 = $20.982

7 0

3 years ago

Read 2 more answers

Three classes of school children are selling tickets to the school play. The number of tickets sold by these classes, and the nu

Westkost [7]

Answer:

The expression for the average number of tickets sold per school child is:

$M = \frac{tickets*class1 + tickets2*class2 + tickets3*class3}{class1 + class2 + class3}$

Step-by-step explanation:

The average number of tickets sold per school child is the weighted mean calculus between the number of tickets sold by these classes and the number of children in each classes.

This is the multiplication between the number of tickets sold by these classes and the number of children in each classes divided by the total weight(in this exercise, the total weight is the total number of school child).

So, the expression for the average number of tickets sold per school child is:

$M = \frac{tickets*class1 + tickets2*class2 + tickets3*class3}{class1 + class2 + class3}$

3 0

2 years ago

A bookstore costs $90 a day to keep open, and spends $12 for each book it sells. the store charges $18 for each book it sells. I

denpristay [2]

Total Cost in a day is $TC= 90 + 12n$ . Profit function is $P=18n$ . And the revenue function is $R = P-TC = 18n-12n-90 = 6n-90$ . In a day, bookstore must sell at least 15 books, because of 6n-90=0, in order to make profit.

4 0

2 years ago

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How do you get the answer for 3n+5 I’m trying to get my grade up from a C so how do you find this answer?

lana [24]

I think it’s six because 3n=6-5 3 n=6-5 then subtract 5 5 from 6 6

7 0

2 years ago