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3 years ago

5

on saturday keisha ran 3.218 kilometers.On Sunday she ran 2.41 kilometers. How much further did she ran on saturday than on sund

ay

1 answer:

ivann1987 [24]3 years ago

7 0

On Saturday she ran 0.808 kilometers more than on Sunday.

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Scientists have discovered a vaccine for a debilitating disease. This year there were 570,000 reported new cases of the disease

Ket [755]

Answer: There are approximately 853827 new cases in 6 years.

Step-by-step explanation:

Since we have given that

Initial population = 570000

Rate at which population decreases is given by

$\frac{2}{3}$

Now,

First year =570000

Second year is given by

$570000\times (\frac{1}{3})$

Third year is given by

$570000(\frac{1}{3})^2$

so, there is common ratio ,

it becomes geometric progression, as there is exponential decline.

so,

$570000,570000\times \frac{1}{3},570000\times( \frac{1}{3})^2,......,570000\times (\frac{1}{3})^6$

a=570000

common ratio is given by

$r=\frac{a_2}{a_1}=\frac{1}{3}$

number of terms = 6

Sum of terms will be given by

$S_n=\frac{a(1-r^n)}{(1-r)}$

We'll put this value in this formula,

$S_6=\frac{570000(1-(\frac{1}{3})^6}{(1-\frac{1}{3})}\\\\=853827.16$

So, there are approximately 853827 new cases in 6 years.

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2 years ago

Please help me What is the quotient when 2/3 is divided by 5/6

Margaret [11]

Answer:

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Step-by-step explanation:

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3 years ago

In the angle of elevation from the tip of the shadow to the top of the tree is 32 degrees, what is the height of the tree to the

LenaWriter [7]

Answer:

it might be -40.0

Step-by-step explanation:

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3 years ago

Is 2493 closer to 2400 rounded or 2,353

DiKsa [7]

2400 because it is only 93 away from 2493 and 2353 is more than 93 away

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3 years ago

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How much would it have rained each month if the total amount rain (11 inches) was redistributed equally among the 12 moths of th

Colt1911 [192]

Answer:

Total rainfall in one month $0.9167$ inches

Step-by-step explanation:

The total rainfall around an year is equal to $11$ inches

There are 12 months in an year.

Total rainfall in one month is equal to total rainfall in an year divided by number of months

Total rainfall in one month

$\frac{11}{12} = 0.9167$ inches

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3 years ago