Answer:
The correct answer is (x-y)
Step-by-step explanation:
x^2-xy
x(x-y)
Answer:
The 99% confidence interval = (126.93,157.67)
Step-by-step explanation:
The formula for Confidence Interval =
Mean ± z × Standard deviation /√n
Mean = 142. 3 mmHg
Standard deviation = 20.8 mmHg.
n = 12
Z score for 99% confidence interval = 2.56
Confidence Interval =
142.3 ± 2.56 × 20.8/√12
142.3 ± 2.56 × 6.0044427996
142.3 ± 15.371373567
Confidence Interval
= 142.3 - 15.371373567
= 126.92862643
≈ 126.93
142.3 + 15.371373567
= 157.67137357
≈ 157.67
Therefore, the 99% confidence interval = (126.93,157.67)
5x + 2 -x = -4x
4x +2 = -4x
2 = -4x -4x
2 = -8x
x = - 1/4
hope this helps
Answer:
2 (if the -.25 has an x after it)
If not 1.75
Slope = ( 7+2)/(0 - 8) = -9/8
b = 7
equation
y = -9/8 x + 7
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(-2,0)(0,-2)
slope = (0 +2)/(-2 - 0) = -1
-------------------------------
y = -2x
x = 0 y = 0
x = 1 y = -2
x = -1 = 2
use these 3 coordinate points to graph it
