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3 years ago

5

Andy is buying a car. He negotiated a 7% decrease on a £6500 car. He will pay the full balance in 12 equal monthly payments. Cal

culate the amount paid each month

1 answer:

Svetlanka [38]3 years ago

4 0

He would pay 503.75 every month

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Choose all the numbers that 116 is divisible by.<br><br> 2<br> 3<br> 4<br> 5<br> 6<br> 9<br> 10

egoroff_w [7]

Only 2 and 4 are divisible by 116 i think

8 0

3 years ago

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What is 3 3/4×2 4/5 in simplest form

Archy [21]

Answer:

10.5 = 10 1/2

Step by step:

(3 3/4)(2 4/5)

= 15/4(2 4/5)

=15/4(14/5)

=21/2

=10 1/2

4 0

3 years ago

A true-false quiz with 10 questions was given to a statistics class. Following is the probability distribution for the score of

disa [49]

Answer:

$E(X)=\sum_{i=1}^n X_i P(X_i)$

And if we use the values obtained we got:

$E(X)=5*0.05 +6*0.15 +7*0.33 +8*0.28+ 9*0.12 +10*0.07=7.48$

For this case this value means that the expected score is about 7.48

Step-by-step explanation:

For this case we assume the following probability distribution:

X 5 6 7 8 9 10

P(X) 0.05 0.15 0.33 0.28 0.12 0.07

First we need to find the expected value (first moment) and the second moment in order to find the variance and then the standard deviation.

In order to calculate the expected value we can use the following formula:

$E(X)=\sum_{i=1}^n X_i P(X_i)$

And if we use the values obtained we got:

$E(X)=5*0.05 +6*0.15 +7*0.33 +8*0.28+ 9*0.12 +10*0.07=7.48$

For this case this value means that the expected score is about 7.48

In order to find the standard deviation we need to find first the second moment, given by :

$E(X^2)=\sum_{i=1}^n X^2_i P(X_i)$

And using the formula we got:

$E(X^2)=(5^2 *0.05)+(6^2 *0.15)+(7^2 *0.33)+(8^2 *0.28)+ (9^2 *0.12 +(10^2 *0.07))=57.46$

Then we can find the variance with the following formula:

$Var(X)=E(X^2)-[E(X)]^2 =57.46-(7.48)^2 =1.5096$

And then the standard deviation would be given by:

$Sd(X)=\sqrt{Var(X)}=\sqrt{1.5096}=1.229$

5 0

3 years ago

Read 2 more answers

35 more than twice the value of e is 65

almond37 [142]

here is what I think since 2 multiplied by 15 equals 30 you at 35 more to that 30 and you get the answer 60. Is that how it is supposed to go?

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3 years ago

In my town, gas prices are always listed to the thousandths place. Since the smallest coin we have is

Virty [35]

Answer:

It would be rounded to $5.90 per gallon. As if something is 5 or above you round up and if it is 4 or less you round down.

8 0

3 years ago