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olga_2 [115]
3 years ago
6

Need help. 10 points algebra​

Mathematics
1 answer:
Evgen [1.6K]3 years ago
3 0

Answer:

Answer:

For a=16, the Maximum Heart Rate is 188 Beats Per Minute.

Step-by-step explanation:

To begin, we know that the formula:

b(a)=200-0.75a    Eqn(1).

is equivalent to a linear equation of algebraic form denoted as:

y=k+mx                  Eqn(2)

as such that  Eqns (1) and (2) relate as follow:

y ⇔ b(a): denoting our Dependent Variable, in this case Max. Heart Rate in Beats Per Minute

x ⇔ a: is our Independent Variable, in this case the Age of the Person

m ⇔ 0.75: denoting the Rate of Change of the Age.

k ⇔ 200: denoting our Constant.

Now in the question our value of b(a) is given as 188 beats per minute, which by plugging in Eqn(1) gives:

200-0.75a=188

from which we can solve to obtain the value of a as follow:

-0.75a=188-200          Gather similar terms on each side

-0.75a=-12\\                   Simplify

a=\frac{-12}{-0.75}                           Solve for a

a=16

Which tells us that at the Age of 16, the Max. Heart Rate is 188 Beats Per Minute.

Step-by-step explanation: :)

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