Answer:
8 years
Step-by-step explanation:
Answer:
0.13404825737
Step-by-step explanation:
Answer:
2 1/2 miles per hour
Step-by-step explanation:
Answer:
0.783
Step-by-step explanation:
To find first r and then r square for the data
correlation coefficient of x and y = Cov (x,y)/std dev x * std dev Y
Cov (x,y) = E(xy) -E(x)E(y)
Hence calculations would be as follows:
x y xy
1 2 2
2 10 20
5 5 25
7 18 126
10 25 250
Mean 5 12 84.6
Cov E(xy)-E(x)E(y) 24.6
r 0.884640297
r^2 0.782588454
so answre is 0.783 after rounding off.
Answer:
y=10
Step-by-step explanation:
To solve, start by isolating the variable to one side of the equation by adding 47 to both sides
70=7y
Divide both sides by 7 to isolate the variable.
10 = y