Answer: 6.4 is the mean of the set of numbers
Step-by-step explanation:
8+4+6+6+7+7+9+4+8+5=64
64 divided by 10 = 6.4
Hope this helps!
answer is the first one and the last 2
Option A is correct answer
Answer:
regular price = $15
Step-by-step explanation:
Represent the regular price by d. Then the discount was 0.20d, and the sale price was (1 - 0.20)d, or 0.80d, which is $12.
Solving for d, we divide both sides by 0.80:
d = regular price = $15
Answer:
(4, 5)
Step-by-step explanation:
5x + y = 25
-3x + 2y = -2
5x + y = 25
y = 25 - 5x
-3x + 2 * (25 - 5x) = -2
-3x + 50 - 10x = -2
-13x = -52
x = 4
5 * 4 + y = 25
20 + y = 25
y = 5
Solution: (4, 5)
