Its C. He substituted incorrectly when calculating the constant of variation.
Reason: He said so
Answer:
Step-by-step explanation:
true
15x7=105 years
9x5=45 years for the boys
105-45=60 so 60years girls
60/6=10 60 years divided by the 6 girls
Mean is 10 years for girls
Answer:
136.71% increase
Step-by-step explanation:
To find the raw increase in dollars of the shoe: 130.19 - 55 =75.19
Now, to find what percent $75.19 is of the original production cost, $55,
(75.19/55) * 100 = 136.71
link: https://brainly.in/question/12369647
Answer:
k = 20
Step-by-step explanation:
310-(30x7) = 5k
310-210=5k
100=5k
/5 /5
20=k
