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KIM [24]
3 years ago
14

In Paris, the sculpture Long-Term, created by Armand Fernandez, contains 60 cars embedded in 3.5 million pounds of concrete. How

many tons of concrete is this?
Mathematics
1 answer:
enot [183]3 years ago
8 0
You'll obviously have to convert "million pounds" to "tons."
Hint:  1 ton = 2000 pounds.  Create a conversion factor from this and then multiply "3.5 million pounds" by your conversion factor (with "pounds" in the denominator of this factor).
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What is the value of the expression below? 3/8+(-4/5)+(-3/8)+5/4
Crazy boy [7]
It will help you!

=-17/40+-3/8+5/4

= -4/5+5/4

= 9/20 

And the answer is 9/20 or decimals (0.45)

4 0
3 years ago
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Which problem solving strategy would be best to solve this problem?
g100num [7]

Answer:

A.

Step-by-step explanation:

You should be tracking your work so that you can find a pattern within the graph to correctly write the next answer.

5 0
3 years ago
Which of the following estimates at a 95% confidence level most likely comes form a small sample?
KonstantinChe [14]

OptionAStep-by-step explanation:95% confidence interval is obtained using the following formulaCOnfidence interval lower bound = mean - critical value * sigma/sq rt nand upper bound = mean + critical value*sigma/sq rt nThus margin of error = critical value*sigma/rt nvaries indirectly as n provided others are remaining the same.Hence lower sample indicates higher margin of errorOut of 4 options given we find that 1 option has maximum margin of error as 21%Hence option. A is most likely coming from a small sample.

6 0
2 years ago
-4x-y=24 missing value
Lunna [17]

Answer:

For solving x         x= -24+y/4  For solving Y                y=−24−4x

Step-by-step explanation:

This is solving for x

Add y to both sides.

−4x=24+y

Divide both sides by -4

and the answer is

x= -24+y/4

THis is solving Y

Add 4x to both sides

−y=24+4x

Multiply both sides by -1

and the answer is  

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7 0
3 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
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