20x-28+12=16x+24 (i distributed the 4 to get this)
20x-16=16x+24 (added -28 & 12)
4x=40 (Subtracted 16x from both sides and added 16 to both sides)
(divide by 4 on both sides)
x=10
Answer:
Jace gets $18.00 while Chris keeps $27.00
Step-by-step explanation:
Jace
2/5 of $45.00
2/5 × 45
= $18.00
Jace gets $18.00
Chris:
$45.00 - $18.00 = $27.00
Answer:
$640
Step-by-step explanation:
192 = 0.3(x)
x = 192/0.3
x = 640
Answer:

Step-by-step explanation:
<u>Step 1: Combine like terms</u>
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Answer: 
The mean of n numbers is the sum of the numbers divided by n.
You have a mean score of 84 after taking 5 tests. Let x be the sum of scores.

You scored a total of 420 points on five tests.
You need to have a mean score of 85 after taking 6 tests. Let y be the score you need to obtain. Your total score on 6 tests is 420+y.

You need to score 90 points on the sixth test.