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timurjin [86]
3 years ago
12

I need help "quick

Mathematics
1 answer:
Ivahew [28]3 years ago
3 0
A is the correct choose.could you make me brainlets answer please
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The measure of central angle YCZ is 80 degrees
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Step-by-step explanation:

I took the test so I’m right

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A person x inches tall has a pulse rate of y beats per​ minute, as given approximately by yequals600 x Superscript negative 1 di
tankabanditka [31]

Answer:

a) 5.13beats/min

b) 2.82 beats/min

Step-by-step explanation:

Given the pulse rate of a person modelled by the equation y = 600x^-1/3 for 30≤x≤75

If the height is 39inches, the instantaneous rate of change of pulse rate for the heights will be expressed as;

y = 600(39)^-1/3

y = {600(1/39)}/3

y = 600/39×3

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The instantaneous rate for a 39 inches tall person is 5.13 beats per min

b) For a 71inches tall person, the beat rate will be expressed as;

y = 600(71)^-1/3

y = {600(1/71)}/3

y = 600/71×3

y = 600/213

y ≈ 2.82 beats per minute

The instantaneous rate for a 71 inches tall person is 2.82 beats per min

7 0
3 years ago
If x varies directly as y and x= 18 when y =3 find x when y=7
denpristay [2]

Answer:

42

Step-by-step explanation:

x = Ky

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Would you rather lose the ability to cry or cry every day for 20 minutes randomly?
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F(-3)=(-2)*(-3)-4=6-4=2

F(-2)=(-2)*(-2)-4=4-4=0

F(-1)=(-2)*(-1)-4=2-4=-2
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3 years ago
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