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emmasim [6.3K]
3 years ago
9

Plz help with this question I will give brainliest answer

Mathematics
1 answer:
Bingel [31]3 years ago
7 0

Answer:

i believe that is elena

Step-by-step explanation:

because she has more dots on all of the number but all of them have the same amount in all but she got more sooooo.

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3/4•3/4???? I can’t do it in my head and I don’t know how to make a decimal into a fraction
Monica [59]

Answer:

0.5625

Step-by-step explanation:

3/4 as a decimal is 0.75

0.75×0.75=0.5625

4 0
3 years ago
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4(5x+1)-3x help me, I need help with algebra.
cricket20 [7]

Answer:

17x+4

Step-by-step explanation:

4(5x+1)-3x

20x+4-3x

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The population of the world was 7.1 billion in 2013, and the observed relative growth rate was 1.1% per year. A) Estimate how lo
VLD [36.1K]

Answer:

A) 63.36 years.

B) 100.42 years.

Step-by-step explanation:

We have been given that the population of the world was 7.1 billion in 2013, and the observed relative growth rate was 1.1% per year.

A) Since we know that population increases exponentially, therefore we will use our given information to form an exponential model for population increase and then we will solve for the time by which our population will be double.

P(t)=7.1(1.011)^{t}            

7.1 \times 2=7.1(1.011)^{t}  

\frac{7.1 \times 2}{7.1} =(1.011)^{t}

2 =(1.011)^{t}

Now let us solve for t using logarithm.

ln(2) =ln (1.011)^{t}      

ln(2) =t \cdot ln(1.011)

0.6931471805599453 =t \cdot 0.0109399400383344  

t=\frac{0.6931471805599453}{0.0109399400383344}

t=63.3593217267282743049\approx 63.36

Therefore, it will take 63.36 years the population to be double.

B) Now we will find the number of years it will take the population to be triple of its size.

7.1 \times 3=7.1(1.011)^{t}

\frac{7.1 \times 3}{7.1} =(1.011)^{t}  

3 =(1.011)^{t}

Now let us solve for t using logarithm.        

ln(3) =ln (1.011)^{t}

ln(3) =t \cdot ln(1.011)

1.0986122886681097 =t \cdot 0.0109399400383344  

t=\frac{1.0986122886681097}{0.0109399400383344}

t=100.4221490079915311298\approx 100.42

Therefore, it will take 100.42 years the population to triple of its size.


6 0
3 years ago
Please help. Will mark brainleist
Leya [2.2K]
Área= Lw (length * width)
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3 years ago
RIGHT ANSWER GETS BRAINLIEST+FIVE STARS!
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The slope is 1.5, and the y-intercept is -2.

Remember the equation y = mx + b
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