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2 years ago

6

Sandy needs to make 6 bows to put on her presents. She plans to use 18 inches of ribbon for each bow. How much ribbon does Sandy

need for all the bows?

1 answer:

blondinia [14]2 years ago

7 0

You do 18×6 and you get 108 so the answer is 108in

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An individual who has automobile insurance from a certain company is randomly selected. Let Y be the number of mov- ing violatio

olga2289 [7]

Answer:

a) $E(Y) = \sum_{i=1}^n Y_i P(Y_i)$

And replacing we got:

$E(Y) =0*0.60 +1*0.25 +2*0.1 +3*0.05 = 0.60$

b) $E(Y^2) =0^2*0.60 +1^2*0.25 +2^2*0.1 +3^2*0.05 = 1.1$

And then the expected value would be:

$E(100Y^2) = 100*1.1= 110$

Step-by-step explanation:

We assume the following distribution given:

Y 0 1 2 3

P(Y) 0.60 0.25 0.10 0.05

Part a

We can find the expected value with this formula:

$E(Y) = \sum_{i=1}^n Y_i P(Y_i)$

And replacing we got:

$E(Y) =0*0.60 +1*0.25 +2*0.1 +3*0.05 = 0.60$

Part b

If we want to find the expected value of $100 Y^2$ we need to find the expected value of Y^2 and we have:

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

And replacing we got:

$E(Y^2) =0^2*0.60 +1^2*0.25 +2^2*0.1 +3^2*0.05 = 1.1$

And then the expected value would be:

$E(100Y^2) = 100*1.1= 110$

4 0

2 years ago

an electrician can wire on average 4.5 houses in a week.how many months will it take her to wire 55 houses if she wires the same

Roman55 [17]

If you know how to divide by decimal you have to divide 55 ÷ 4.5 and you would get 12 but if you don't know keep multipling a number times 4.5 but overall if you don't want to do all the work the answer is going to be (55×4.5=12 or 4.5×12=55— 12 houses)

6 0

2 years ago

To create an entry code, you must first choose 2 letters and then 2 single digit numbers. How many entry codes can you create?

ivann1987 [24]

Answer:

55600

Step-by-step explanation:

First times the number of possibilities of the amount of letters it could be so 26X26 as it is a non consecutive possibility that means both letters have the possibility to be the same. Then take the product of 26X26 and multiply it by the possibilities of the first number which is 10 then repeat that by again multiplying the product by 10 to represent the number of possibilities for the second number

3 0

2 years ago

Mr. and Mrs. Jones have a patio that they want to rearrange. They want to put flower pots in the largest corner of their patio,

Lisa [10]

Answer:

it is b. corner H according to my test results

Step-by-step explanation:

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2 years ago

Graph the functions f(x) = -6x +2 and g(x) = -22+2 +6 on the same coordinate plane

Juliette [100K]

X=0 and x=2, the first graph is a line, the second graph is logrithmic and there are two points of intersection

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2 years ago