Need more than 5 points for all that wth
Answer:
A. x = 10 years
B. x = 20 years
Step-by-step explanation:
Given:
y = 0.7(200 - x)
Where,
y = target heart rate in beats per minute
x = person's age in years
How old is a person with a target heart rate of 133 beats per minute?
y = 0.7(200 - x)
133 = 0.7(200 - x)
133 = 140 - 0.7x
133 - 140 = -0.7x
-7 = -07x
x = -7/-0.7
x = 10 years
B. How old is a person with a target heart rate of 126 beats per minute?
y = 0.7(200 - x)
126 = 140 - 0.7x
126 - 140 = -0.7x
-14 = -0.7x
x = -14/-0.7x
x = 20 years
Answer:
The answer is below, see below:
Step-by-step explanation:
Answer:
5n is a term= true
3m and 5n are NOT like terms=true
these are the correct answers
Step-by-step explanation:
these are the wrong ones
a variable would be m or n
coefficients would be 3 and 5
Here it is. You can also use the quadratic equation to find the answer.
