Answer:
a. 5
Step-by-step explanation:
3x2t = 6t+15 = 5t+20
-5t -5t
t+15 = 20
-15 -15
t = 5
Answer:
profit=20%
Step-by-step explanation:
profit%=sp-cp/cp×100%
=1500-1250/1250×100
=250/1250×100
=20%
Answer. 100= 10x+ 12
Explanation. 100 represents the total money from mowing lawns after (x) jobs. x represents the amount of lawns he mows. Finally, 12 represents the amount of money he has regardless of how many lawns he mows. I hope this helps, let me know if it’s correct so others can use it :)
Good luck.
Answer:
a) The new correlation coefficient should be the same: R = 0.72
Step-by-step explanation:
The correlation coefficient is a statistical measure that calculates the strength of the relationship between the relative movements of two variables.
It is a relative dimensionless measure, so it does not depend on the units of measurement of the variables involved.
If the variables are correlated in centimeters and kilograms, they will also be correlated in inches and pounds, and with the same relative magnitude.
So the answer is
a) The new correlation coefficient should be the same: R = 0.72