The expression 3 + (9 - 5) 2 ÷ 8 is equal to 2.4 5 4 1.4 which one?

Here is your

First you have to solve the equation:

3+(9-5)×2÷8

You need to use PEMDAS:

There's a P:

9-5=4

3+4×2÷8

There's no E

There's a M

4×2=8

3+8÷8

There a D

8÷8=1

3+1

There's an A

3+1=4

There no S

Your answer is...

=4 or C

The answer is equal to 4.

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