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lutik1710 [3]
3 years ago
15

Evaluate each expression using the variable replacements.

Mathematics
1 answer:
stira [4]3 years ago
4 0

Answer: I think it's 583...

Step-by-step explanation:

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This it the question
Lelechka [254]

Answer:

d

Step-by-step explanation:

7 0
2 years ago
In 2016 the United States had a population of about 323 million people and was growing at 0.7 %. Use an explicit exponential mod
ElenaW [278]

Answer:

2047

Step-by-step explanation:

We are given that

Growing rate=0.7%

\frac{dp}{dt}=\frac{0.7}{100}P

\int \frac{dP}{P}=0.007\int dt

lnP=0.007t+C

Using the formula

\int \frac{dx}{x}=ln x+C

P=e^{0.007t+C}=e^{0.007t}\cdot e^C=Ae^{0.007t}

e^C=A

Initially when t=0,P=323 million

Substitute the values

323 million=A

P=323e^{0.007t}

Now, substitute P=400 million

400=323e^{0.007t}

ln\frac{400}{323}=0.007t

ln(1.2384)=0.007t

t=\frac{ln(1.2384}{0.007}

t=30.5\approx 31 Years

Year=2016+31=2047

Hence,In 2047 the U.S population will reach 400 million people.

5 0
3 years ago
I will give u brainliest if u answer this pweeze
grigory [225]

Answer:

Its too tiny please make it bigger

Step-by-step explanation:

i even zommed in but i still cant see it, and i have my glasses on

7 0
3 years ago
Read 2 more answers
Which of the following equations belongs to an ellipse with vertical orientation?
Mekhanik [1.2K]

Answer:

d. 16x² + y² = 16

Step-by-step explanation:

Standard form of an ellipse is:

x² / a² + y² / b² = 1

If b > a, the ellipse has a vertical orientation.

We can ignore options b and c, since they have minus signs in them.

Convert the other options to standard form:

a. x² / (1/16) + y² / (1/25) = 1

x² / (1/4)² + y² / (1/5)² = 1

1/4 > 1/5

d. x² + y² / 16 = 1

x² / 1² + y² / 4² = 1

1 < 4

e. x² / 16 + y² = 1

x² / 4² + y² / 1² = 1

4 > 1

Of these three options, only d is a vertical ellipse.

6 0
3 years ago
Read 2 more answers
The distances and times of practice runs for four students on a cross-country team are shown in the table below, which statement
rodikova [14]
I need the chart to answer your question but to post ill say b
5 0
3 years ago
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