Answer as follow: happy to help always.....
Step-by-step explanation:
x-3.5 = 7.2
x = 7.2+ 3.5
as you know that 3.5 is subtracting over other side while moving it on 7.2 side it will add..
7.2+3.5
10.7
so,
x= 10.7
you can check ✅✅✅✅
Thank you!!!!!!!!!
Pretty sure the answer is k
Answer:
ithink its A miight be wrong tho hope it helps in someway ig idk
Step-by-step explanation:
56x^2+6x-36 bc of the FOIL METHOD which goes multiple first term, outer terms, inner terms, and last terms
Answer:
About 99.7% of the IQ scores would be between 57 and 141.
Step-by-step explanation:
The Empirical Rule about a bell-shaped curve states that :
- 68% of the data lies within one standard deviation of the mean (both left-side and right-side)
- 95% of the data lies within two standard deviations of the mean (both left-side and right-side)
- 99.7% of the data lies within three standard deviations of the mean (both left-side and right-side)
Now, we need to find what percentage of IQ scores lies between 57 and 141 : Mean = 99 and standard deviation = 14
141 – 99 = 42
= 3 × 14
Thus, 141 is 3 standard deviations to the right of the mean.
99 – 57 = 42
= 3 × 14
Thus, 57 is 3 standard deviations to the left of the mean.
Since 57 to 141 is within 3 standard deviations of the mean, and according to empirical formula stated above : about 99.7% of the IQ scores would be between 57 and 141.
