Answer:
it may be 79 or 7090 or
Step-by-step explanation
if u subtract 7595-55=7540
Answer is 8
Work Shown:
f(x) = sqrt(5*x + 4)
f(12) = sqrt(5*12 + 4) ... replace every x with 12
f(12) = sqrt(60 + 4)
f(12) = sqrt( 64 )
f(12) = 8
Answer:
1. IQ range
2. Frequency
3. Mean
4. Standard deviation and variance
Step-by-step explanation:
To use statistics the researcher must determine the standard deviation, mean and variance. He will need the following to calculate the mean:
1. The IQ score range and the frequency of the range.
To calculate the standard deviation and mean:
1. Need the mean and frequency of the IQ scores
Therefore the 4 things needed is:
1. IQ range
2. Frequency
3. Mean
4. Standard deviation and variance
Answer:
y=1/2x-9
Step-by-step explanation:
y=-2x-4
perpendicular slope = opposite reciprocal
y=1/2x+b
-8=1/2*2+b
-8=1+b
b=-9