Answer:4
Step-by-step explanation:collect like terms
2x-3x+10=2x-2
-1x+10=2x-2
-3x=-12
divide both sides by -3
x=4
Answer
80
Step-by-step explanation:
1/5 of 120 is 24
120 - 24 because you dropped 1 /5
gives you 96
then you give 1/6 of what you have left to your friend and that means giving 16 candies to your friend so 96-16
and that gives you 80 candies remaining
Answer:
angle 1 = 70 degree and angle 2=95 degree
Step-by-step explanation:
for the first angle
180 -70 = 110
and 180-110 = 70 ( opposite angles )
for the second angle
180-85 =95
and again 180-95 =85(opposite angles)
180-85=95 (the straight line property)
Answer:
-3/2
Step-by-step explanation:
The slope goes down 3 and over 2.
Complete question :
Michael took 12 tests in his math class. his lowest score was 78. his highest score was 98. on the 13th test, he earned a 64. put a check in the correct box to indicate whether the value of each statistic below for his test scores increased, decreased, or cannot be determined when the last score was added.
1. Standard deviation 11) Median 111) Mean
Answer:
Standard deviation - increased
Median - cannot be determined
Mean - decrease
Step-by-step explanation:
The standard deviation will increase because the new (13th) test score does not fall within the range (lowest and highest) of the 12 previous test scores and will hence further increase the variability of the s ires measured
The Median cannot be determined as we need the data for the scores in other to determine the middle value of the test scores.
The mean value will decrease further because, when a score (64) lower that the previously recorded least score (78) is recorded and then the sum is recalculated and average taken. This low new score will cause the new to decrease further than previously recorded.
