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1 year ago

EMERGENCY!! 25 POINTS!! Find 40th term of 5n - 3

Mathematics

1 answer:

Oduvanchick [21]1 year ago

6 0

Answer:

197

Step-by-step explanation:

the answers 197 because if an=5n-3 then a40= 197

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Joyce saved $80 on an item that was 65<br> %<br> off. What was the original price?

Xelga [282]

The answer is 132. 132 is the original price. 80$ x 65% = 52. 80 + 52 = 132. So 132 is answer and original price.

7 0

3 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

Two urns contain white balls and yellow balls. The first urn contains 2 white balls and 7 yellow balls and the second urn contai

marissa [1.9K]

P(WW)=(2/9)(10/14)

P(WW)=10/63

3 0

3 years ago

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According to the graph what is the value of x when g(x)=4

Serhud [2]

Answer:

x=2

Step-by-step explanation:

we know that

according to the graph

when g(x)=4

the value of x=2

see the attached figure to better understand the problem

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3 years ago

What is another name for irrational number?

maria [59]

Answer:

Step-by-step explanation:

Irrational numbers are reasonable and also real.

Surd is an example of an irrational numbers.

So as another name may be I go with option D

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3 years ago