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3 years ago

Is the following number rational or irrational? 7.11

Mathematics

2 answers:

Andrew [12]3 years ago

8 0

Answer:

Rational

Step-by-step explanation:

7.11 contains a non-continuous decimal unlike pi or 1/3

tankabanditka [31]3 years ago

7 0

Answer:

7.11 is a rational number, because it is a terminated decimal and can be expressed as a fraction.

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Shane and Abha earned a team badge that required their team to collect no less than 2000 cans for recycling. Abha collected178 m

Agata [3.3K]

Answer:

Let number of cans collected by Shane =S

Number of cans collected by Abha=S+178

As, it is given that ,Abha collected 178 more cans than Shane did.

Also, the statement about inequality is

Both Shane and Abha have to collect no less than 2000 cans for recycling.

Writing the statement in terms of inequality

S +S+178 ≥ 2000

2 S ≥ 2000 - 178

2 S ≥ 1822

Dividing both sides by 2, we get

S≥ 911

So, Shane must have collected At least 911 cans.

6 0

3 years ago

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Rewrite (21+31).4 using the disbributive property of multiplication over addition

Mamont248 [21]

Answer: evaluate it is 52

Step-by-step explanation:

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3 years ago

What is the probability of landing on a multiple of 3 in a twenty-sided die?

scoray [572]

Answer:

1by 20

Step-by-step explanation:

no of digit by no of sides

5 0

3 years ago

The graph of an equation with a negative discriminant always has which characteristic?<br>

jasenka [17]

Answer:

a posative

Step-by-step explanation:

3 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