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2 years ago

12

Help also please explain thank you

1 answer:

Ne4ueva [31]2 years ago

5 0

10 yards. The amount of yards is 1 third the amount of feet so you just divide 30 by 3 to get the amount of yards

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A biker travels 55 miles in 5 hours. What is the bikers speed in miles per hour? *

lapo4ka [179]

Answer:

the bikers speed is 11mph

Step-by-step explanation:

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3 years ago

What is 75 Times 37 equal

alukav5142 [94]

Answer:

2775

Step-by-step explanation:

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3 0

2 years ago

What is the sum of 2^5 and 7^2? Write the answer in the ordinary form.

posledela

Answer:

It's 81

Step-by-step explanation:

2^5 is 2*2*2*2*2 or 32

7^2 is 7*7 or 49

Add them together... 81

5 0

2 years ago

WILL GIVE BRAINLIEST The solution to 15x = 30 is x =___. (Only input the number.)

dedylja [7]

Answer:

x=2

Step-by-step explanation:

If 15x=30 and 15*2=30 then x=2

Hope this helped.

A brainliest is always appreciated.

8 0

2 years ago

Read 2 more answers

A solution initially contains 200 bacteria. 1. Assuming the number y increases at a rate proportional to the number present, wri

GuDViN [60]

Answer:

1. $\frac{dy}{dt}=ky$

2.543.6

Step-by-step explanation:

We are given that

y(0)=200

Let y be the number of bacteria at any time

$\frac{dy}{dt}$ =Number of bacteria per unit time

$\frac{dy}{dt}\proportional y$

$\frac{dy}{dt}=ky$

Where k=Proportionality constant

2. $\frac{dy}{y}=kdt$ ,y'(0)=100

Integrating on both sides then, we get

$lny=kt+C$

We have y(0)=200

Substitute the values then , we get

$ln 200=k(0)+C$

$C=ln 200$

Substitute the value of C then we get

$ln y=kt+ln 200$

$ln y-ln200=kt$

$ln\frac{y}{200}=kt$

$\frac{y}{200}=e^{kt}$

$y=200e^{kt}$

Differentiate w.r.t

$y'=200ke^{kt}$

Substitute the given condition then, we get

$100=200ke^{0}=200 \;because \;e^0=1$

$k=\frac{100}{200}=\frac{1}{2}$

$y=200e^{\frac{t}{2}}$

Substitute t=2

Then, we get $y=200e^{\frac{2}{2}}=200e$

$y=200(2.718)=543.6=543.6$

e=2.718

Hence, the number of bacteria after 2 hours=543.6

4 0

3 years ago