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castortr0y [4]
3 years ago
14

If greg works 20 hours how much will he make

Mathematics
1 answer:
lord [1]3 years ago
4 0

Answer:

?

Step-by-step explanation:

You need to know how much how much he makes per hour.

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A motorboat takes 5 hours to travel 150 miles going upstream. The return trip takes 3 hours going downstream. What is the rate o
lys-0071 [83]

Answer:

The rate of the boat in still water is 40 miles per hour

The rate of the current is 10 miles per hour

Step-by-step explanation:

we know that        

The speed or rate is equal to divide the distance by the time

Let

x ----> the rate of the current (miles per hour)          

y ----> the rate of the boat in still water (miles per hour)        

we have that          

<em>going upstream              </em>

y-x=\frac{150}{5}        

y-x=30 ----> equation A            

<em>going downstream                                  </em>

y+x=\frac{150}{3}                            

y+x=50 ----> equation B                            

Solve the system of equations by elimination                            

Adds equation A and equation B                                      

y-x=30\\y+x=50\\------\\y+y=30+50\\2y=80\\y=40                    

<em>Find the value of x                                </em>

y+x=50                

40+x=50            

x=10          

therefore          

The rate of the boat in still water is 40 miles per hour      

The rate of the current is 10 miles per hour      

8 0
3 years ago
There are some students playing soccer. Five students decided to join the game and now there are twenty-two students playing soc
ella [17]

Answer:

17 students

Step-by-step explanation:

Given:

There are some students playing soccer.

Five students decided to join the game and now there are twenty-two students playing soccer.

Question asked:

How many students were originally playing soccer?

Solution:

Let initially number of students playing soccer = x

As given,

<u>After joining 5 more students, there are 22 students playing soccer, the equation will be:-</u>

x+5=22

Subtracting both side by 5

x+5-5=22-5\\x=17\ students

Hence, 17 students were originally playing soccer.

3 0
3 years ago
When the amount paid for land is 36,000 and the amount for expenses is 10,000 what is the balance in total transactions
I am Lyosha [343]
46,000 is the total transactions.
5 0
3 years ago
How many hours does antoine sleep in a day
guajiro [1.7K]
Antoine sleep 8 hours in a day
5 0
3 years ago
Need help really fast will mark brainliest
Volgvan
I’m pretty sure it’s a
6 0
3 years ago
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