Solve x^2-8x-9=0 algebrically
1 answer:
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Answer:
D. b=7a
Step-by-step explanation:
Add -11/3a to both sides.
Divide both sides by 1/3
1 /3 b ÷1/ 3 = 7/ 3 ÷a 1 /3
and the answer is
b=7a
ik this doesnt make any sense but hope this helps
Answer:
Standard score z=0.07
Step-by-step explanation:
The z-score, or standard score, represents an equivalent value for X but in the standard normal distribution, where μ=0 and σ=1.
For X=28.3 in a normal distribution with μ=26.3 and σ=28.1, the standard score can be calculated as:
This value is 0.07 standard deviations right to the mean.
In the picture attached, we have located the z-score.
