Y = x - 7
2x + y = 8
2x + (x - 7) = 8
2x + x - 7 = 8
3x - 7 = 8
<u> + 7 + 7</u>
<u>3x</u> = <u>15</u>
3 3
x = 5
y = x - 7
y = 5 - 7
y = -2
(x, y) = (5, -2)
Slope = (2+5)/(-3-1) = 7/-4 = -7/4
answer is B -7/4
Answer:
3/2
Step-by-step explanation:
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.
The given number 0.044.
How the value if 4s related?
=> let’s give the place value of each digits first. There are 3 digits
after the decimal point.
=> 0 which is tenths, 4 which is hundredths and another 4 which is
thousandths.
Now, notice the we have 2 4s next to each other.
=> 4 hundredths
=> 4 thousandths
Thus, 4 hundredths is 10 times higher than 4 thousandths.
=> 0.004 x 10 , in where the value of 4 is thousandths
=> 0.04, in where when multiplied by 10 the value become hundredths.
