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valkas [14]
3 years ago
15

Can someone help me with this one ​

Mathematics
1 answer:
natta225 [31]3 years ago
5 0

Answer:

22 would be your answer.

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two mechanics worked on a car. The first mechanic worked for 10 hours, and the second mechanic worked for 5 hours. Together they
Lerok [7]
Let's make,
mechanic #1's rate = x
mechanic #2's rate = y

* Their rate is dollars per hour ($/hr)

mechanic #1 worked for 20 hours (hr × $/hr = $)
20x = money earned by mech#1

and mechanic #2 worked for 5 hours
5y = money earned by mech#2

together they charged a total of $1150. So the amount of money earned by both mechanics.

20x + 5y = 1150

the sum of the two rates was $95 per hour.

x + y = 95

which means
x = 95 - y

plug (95 - y) in for "x" in the other equation to get everything in terms of one variable.

20(95 - y) + 5y = 1150

solve for y

1900 - 20y + 5y = 1150
1900 - 15y = 1150
-15y = 1150 - 1900
-15y = -750
y = -750/-15
y = 50 $/hr

Now use this to solve for x

x + y = 95
x + 50 = 95
x = 95 - 50
x = 45 $/hr

mech#1 charged 45$/hr
mech #2 charged 50$/hr
7 0
3 years ago
We are using the formula I=PRT (Interest=Principal x Rate x Time) or P=%W (Part=Percent x Whole)
olya-2409 [2.1K]

Answer: principle

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
PLEASE HELP ME ASAP I REALLY NEED HELP!!!
padilas [110]

1) \overline{UP}

2) \overline{UP} \cong \overline{UP}

3) \overline{UR}

4) \overline{PR}

5) \triangle OUP \cong \triangle RUP by SSS

6) CPCTC

7 0
2 years ago
Dehnil has 6 teaspoons of salt . The ratio to tablespoons is 3:1 , how many tablespoons of salt does Dehnil have ?
boyakko [2]
Dehnil has 2 tablespoons because the ratio 3:1 can go into 6 teaspoons
6 0
3 years ago
Can the following be lengths of the sides of a triangle? Why or why not?
Svetlanka [38]
The answer to A is yes because of a 3-4-5 triangle. The answer to B is no
3 0
3 years ago
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