Answer:
Step-by-step explanation:
x= money earned per hour working as a cashier.
y=money earned per hour working delivering newspapers.
We propose the following system of equations:
5x + 4y =77
6x + 3y=78
We solve the system by reduction method:
-6*(5x+4y=77) ⇒ -30x-24y=-462
5*(6x+3y=78)⇒ 30x+15y=390
---------------------------
-9y=-72 ⇒ y=-72 /-9=8
Now, we get the value of "x" replacing the value of "y" by "8" in any part of the equation above.
5x + 4(8)=77
5x+32=77
5x=77-32
5x=45
x=45/5=9
therefore;
money earned per hour working as a cashier= $9/ hour
money earned per hour working delivering newspapers=$8/hour
Answer: 0.0083
0.00083
0.000083
Step-by-step explanation: hope it helps
Answer:
(10-x)GB
Step-by-step explanation:
Music=10-x, simple arithmetic
Answer:
70 x 12 1/2 = 875.
Step-by-step explanation:
Step 1.) When you multiply fractions, you put whole numbers over one.
Step 2.) Then, you change whole numbers with fractions, to improper fractions.
Step 1.)
70/1 x 12 1/2
Step 2.)
70/1 x 25 / 2.
And then we solve!
70 x 25 = 1750
1 x 2 = 2.
1750 divided by 2 = 875.
Hope this helps!!
*This is the Right Way of doing these problems*
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