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Solnce55 [7]
3 years ago
6

While exercising, a person's recommended target heart rate is a function of age. The recommended number of beats per minute, y ,

is given by the function y=f(x)=−0.85x+187 where x represents a person's age in years. Determine the number of recommended heart beats per minute for your age. Show each step in the process of this calculation.
Mathematics
1 answer:
inysia [295]3 years ago
4 0

Answer:

174.25

Step-by-step explanation:

To solve this equation I will assume you are 15 as this is a High School level problem.

1. Plug in 15 for x

-.85*15+187

2. Solve

-.85*15=-12.75

-12.75+187=174.25

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How would I do this problem?
kenny6666 [7]

If it's a geometric sequence then:

a_1=27;\ a_2=27\\\\r=\dfrac{a_2}{a_1}\to r=\dfrac{27}{36}=\dfrac{3}{4}=0.75\\\\a_{n+1}=a_nr\\\\a_3=27\cdot0.75=20.25\ CORRECT

We calculate the fourth and fifth term of the sequence:

a_4=a_3r\to a_4=20.25\cdot0.75=15.1875\\\\a_5=a_4r\to a_5=15.1875\cdot0.75=11.390625

Answer:

In year 4 15.1875 animals.

In year 5 11.390625 animals.

7 0
3 years ago
What are the factors of 36?
denis23 [38]

Answer:

1, 2, 3, 4, 6, 9, 12, 18, 36

Step-by-step explanation:

3 0
2 years ago
Use the pie chart below to answer the following question.
Airida [17]

notice in the chart, the big yellow and the big orange, 23% and 29%, which make up 23+29 = 52%, more than 50%.

and the ages range is 18-25 and 26-34, namely 18 - 34.

7 0
3 years ago
A motorboat takes 5 hours to travel 100mi going upstream. The return trip takes 2 hours going downstream. What is the rate of th
Temka [501]
The boat went 5hours upstream, let's say it has a "still water" speed rate of "b", it went 100miles... however, going upstream is going against the current, let's say the current has a speed rate of "c"

so, when the boat was going up, it wasn't really going "b" fast, it was going " b - c " fast, because the current was eroding speed from it

now, when coming down, the return trip, well the length is the same, so the distance is also 100miles, it only took 2hrs though, because, the boat wasn't coming down  "b" fast, it was coming down " b + c " fast, because the current was adding speed to it, so it came down quicker

now, recall your d = rt, distance = rate * time

\bf \begin{array}{lccclll}
&distance&rate&time\\
&-----&-----&-----\\
upstream&100&b-c&5\\
downstream&100&b+c&2
\end{array}
\\\\\\
\begin{cases}
100=(b-c)5\\
\qquad \frac{100}{5}=b-c\\
\qquad 20=b-c\\
\qquad 20+c=\boxed{b}\\
100=(b+c)2\\
\qquad 50=b+c\\
\qquad 50=\boxed{20+c}+c
\end{cases}

solve for "c", to see what's the current's speed

what's "b"?  well 20+c = b
4 0
3 years ago
Find the solution of<br> m(-11 + m) = 0
zhuklara [117]

i tried ;w;

Step-by-step explanation:

m(−11+m)=0

Step 1: Simplify both sides of the equation.

m2−11m=0

Step 2: Factor left side of equation.

m(m−11)=0

Step 3: Set factors equal to 0.

m=0 or m−11=0

m=0 or m=11

Answer:

m=0 or m=11

6 0
3 years ago
Read 2 more answers
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