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3 years ago

Jose ran13

Mathematics

2 answers:

ivolga24 [154]3 years ago

7 0

Answer:

1/4 minutes

Step-by-step explanation:

1 minute = 60 seconds

3 minutes = 180 seconds

3 minutes and 15 seconds = <u>195 seconds</u>

13 miles/195 seconds

195/13 = 15

His speed --> <u>1 mile/15 seconds</u>

1/4 minutes = 15 seconds

Pls mark me as brainliest ;)

Tresset [83]3 years ago

6 0

Answer:

you have to find the unit rate first then try to solve

Step-by-step explanation:

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The population of a country was estimated to be 1.114 x 10^8. On this day, the population of the world was 3.853 x 10^9.

Lelechka [254]

Step-by-step explanation:

To find how many people lived outside of the country we subtract:

3.853 × $10^{9}$ - 1.114 × $10^{8}$ = 3.7146 ×

To find the percentage of people living inside the country, we divide: $\frac{1.114 x10^{8}}{3.853 x10^{9}} =2.8913x10^{-2}$ percent or 2.89%. Which is extremely small.

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3 years ago

Ahhahanvm? shushaha bruh what do i do

Basile [38]

Uh I’m not even gonna question it but thanks for the free points ig? Lol

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3 years ago

Read 2 more answers

What is the proportional relationship represented by this table?

77julia77 [94]

Answer:

the constant of proportionality is 0.2 and it is a proportional relationship

Step-by-step explanation:

2 divided by 10 is 0.2

1 divided by 5 is 0.2

they have the same answer so they are proportional

since they have the answer 0.2 it

is there constant of proportionality

4 0

3 years ago

When a person is breathing normally the amount of air in their lawns varies sinusoidally. When full Karen’s lungs hold 2.8 L of

makkiz [27]

Answer:

$A(t) = 2.2\sin \frac{(t - 2)\pi }{6} + 0.6$

Step-by-step explanation:

Let the function of quantity in the lung of air be A(t)

So $A(t) \alpha \sin (\frac{t - \alpha }{k} )$

so, A(t) = Amax sin t + b

A(t) = 2.8t⇒ max

A(t) = 0.6t ⇒ min

max value of A(t) occur when sin(t) = 1

and min value of A(t) = 0

So b = 0.6

and A(max) = 2.2

$A(t) = 2.2\sin \frac{(t)}{k} + 0.6$

at t = 2 sec volume of a is 0.6

So function reduce to

$A(t) = 2.2\sin \frac{(t - 2)}{k} + 0.6$

and t = 5 max value of volume is represent

so,

$\sin \frac{t - \alpha }{k} = 1$

$\frac{t - 2}{k} = \frac{\pi }{2}$ when t = 5

$\frac{6}{\pi } = k$

so the equation becomes

$A(t) = 2.2\sin \frac{(t - 2)\pi }{6} + 0.6$

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3 years ago

Please help me for gods sake:(

IgorLugansk [536]

Answer:

Step-by-step explanation:

y=3x-2, plug in each for x and y on the table and they work

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3 years ago