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ra1l [238]
3 years ago
11

Johanna ran a mile in physical education class. After resting for one hour, her heart rate were 60 bpm. If her heart rate decrea

sed by 2/5, what was her heart rate immediately after she ran the miles?
Mathematics
2 answers:
emmasim [6.3K]3 years ago
7 0

60 bpm = 3600 beats per hour

2/5= .4

Her heart rate decreased by .4

This means:  3600 = x * .4

x = 3600/.4

x=9000

Her heart rate was 9000 beats per hour OR

9000bph = 150 bpm

EleoNora [17]3 years ago
3 0
Hey heart rate was 100 BPM immediately after running.
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(x)=7x-3 and g(x)=x^2-4,find (f+g)(x)
defon

Good morning ☕️

Answer:

<h2>x² + 7x - 7</h2>

Step-by-step explanation:

f(x)=7x-3 and g(x)=x²-4

(f+g)(x) = f(x) + g(x) = 7x - 3 + x²- 4

                              = x² + 7x - 7

_________________________

:)

5 0
3 years ago
N=3, zeros 4 and 2i, f(2)=-48 find nth degree polinomonal function
enot [183]
The degree is 3, the zeros are; 4, 2i, -2i and a point is (-48, 2) 

For zeros; 2i, -2i <-- complex conjugates, always in pairs 

\frac{c}{a}=(2i)(-2i) &#10;
= -4(i²=-1)
=5 

\frac{b}{a}=-(2i+(-2i))
=0 

Therefore the equation is; a(x^{2}+5) <-- b value is zero 

Rewrite the equation with all zeros; 

a(x-4)(x²+5)=f(x) <-- put in coordinates of the points to find the value of x
a(2-4)(2²+5)=-48 
a(2)(9)=-48 
a=-48/18 
a=-8/3 

The final polynomial function is; (-8/3)(x-4)(x²+5)=f(x)

Hope I helped :)
5 0
3 years ago
How do u solve this equation y + 8/9 = 5/9
asambeis [7]

The answer to this equation is y = -1/3.

Steps:

y + 8/9 = 5/9

Subtract 8/9 from both sides.

y + 8/9 - 8/9 = 5/9 - 8/9

Then you get your answer, which is y = -1/3

3 0
3 years ago
The function h(t) = 210 – 15t models the altitude of a hot air balloon over time t, in minutes.
Firdavs [7]
H(10)=210-15(10)
h(10)=210-150
h(10)=60

The hot air balloon is at an altitude of 210. The hot air balloon slowly falls 15 () per minute, for 10 minutes. He ends up at 60 altitude
6 0
3 years ago
Thirty car pass through a certain toll booth each minute.at that rate,how many cars are expected to pass through the toll booth
BigorU [14]
D. 30 Cars p/m x 30 min = 900
8 0
3 years ago
Read 2 more answers
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