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3 years ago

7.8 X 103--------------1.2 X 104

Mathematics

1 answer:

Strike441 [17]3 years ago

5 0

;-;

Let's just do a bunch of math below.

7.8 X 103 ?

-------------- = ------

1.2 X 104 ?

So, first, we're gonna do 7.8 multiplied by 103 to get 803.4.

Thus....

7.8 X 103 803.4

-------------- = -----------

1.2 X 104 ?

Then we would do 1.2 multipied with 104 to get a product of 124.8.

Therefore....

7.8 X 103 803.4

-------------- = -----------

1.2 X 104 124.8

Dividing 803.4 by 124.8 would get you a quotient of 6.4375.

Your answer is 6.3475.~

Have a nice day~

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Solution:

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Cost per pint of blueberry = $ 2.30

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Therefore,

a = 2b --------- eqn 1

They spent a total of $11.00. Therefore we frame a equation as:

pints of strawberries bought x Cost per pint of strawberry + pints of blueberries cost x Cost per pint of blueberry = 11

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Substitute eqn 1 in eqn 2

1.6(2b) + 2.3b = 11

3.2b + 2.3b = 11

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Divide both sides by 11

b = 2

Substitute b = 2 in eqn 1

a = 2(2)

a = 4

Thus 4 pints of strawberries and 2 pints of blueberries are bought

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4 years ago

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3 years ago

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f(x) = λ. $e^{-\lambda.x}$

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F(x) = 1 - $e^{-\lambda.x}$

(a) Probability of distance at most 100m, with λ = 0.0143:

F(100) = 1 - $e^{-0.0143.100}$

F(100) = 0.76

Probability of distance at most 200:

F(200) = 1 - $e^{-0.0143.200}$

F(200) = 0.94

Probability of distance between 100 and 200:

F(100≤X≤200) = F(200) - F(100)

F(100≤X≤200) = 0.94 - 0.76

F(100≤X≤200) = 0.18

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E(X) = $\frac{1}{\lambda}$

E(X) = $\frac{1}{0.0143}$

E(X) = 69.93

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σ = $\sqrt{\frac{1}{\lambda^{2}} }$

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σ = 69.93

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$1 - e^{-\lambda.m}$ = 0.5

$-e^{-\lambda.m}$ = - 0.5

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4 years ago

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Answer:

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Step-by-step explanation:

Move the decimal so there is one non-zero digit to the left of the decimal point.
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b. If the decimal is being moved to the left, the exponent will be positive.

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3 years ago

7.8 X 103--------------1.2 X 104​

7.8 X 103--------------1.2 X 104