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3 years ago

8

PLEASE ANSWER FOR 15 POINTS!!

1 answer:

KATRIN_1 [288]3 years ago

4 0

The amount of paint required to paint the whole cupboard is:

https://tex.z-dn.net/?f=2%5Ctimes2.5%5E2%2B4%5Ctimes%282.5%5Ctimes3.5%29%0A%5C%5C%3D47.5+++ft%5E2

The amount of paint required to paint all but the bottom surface is:

https://tex.z-dn.net/?f=2.5%5E2+%2B+4%282.5%5Ctimes3.5%29%0A%5C%5C%3D+41.25+ft%5E2

So the difference in paint required is 6.25 square feet worth of paint.

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Suppose two random variables, X and Y are independent, which statement is false? a) P(X∣Y)=P(X) b) P(X∪Y)=P(X)+P(Y) c) P(X∩Y)=P(

Svetlanka [38]

B is false, since by the inclusion/exclusion principle,

$P(X\cup Y)=P(X)+P(Y)-P(X\cap Y)$

By independence, we have $P(X\cap Y)=P(X)P(Y)$ , which is zero if either of $P(X)$ or $P(Y)$ is 0, which isn't guaranteed.

5 0

3 years ago

Find the first four terms of the sequence an = 4n-6

natulia [17]

Answer:

The first four terms of the sequence are-6, -2, 2 and 6

Step-by-step explanation:

The given sequence is $a_n=4n-6$

In order to find the first four term of the sequence we put n =0, 1, 2 and 3.

For n =0

$a_0=4(0)-6=-6$

For n =1

$a_1=4(1)-6=-2$

For n =2

$a_2=4(2)-6=2$

For n =3

$a_3=4(3)-6=6$

Therefore, the first four terms of the sequence are

-6, -2, 2 and 6

5 0

3 years ago

write the point slope form of an equation of the line that passes through (-2 5) and has an undefined

Nana76 [90]

Answer:

no solution

Step-by-step explanation:

Any of the "-slope" or "slope-" formulas for a line cannot be used when the slope is undefined.

The equation of the desired line is x = -2. It cannot be put into the form y = ....

3 0

3 years ago

I need help<br><br><br><br> Thx guys

Evgesh-ka [11]

Plugging in the numbers 7x - 2y = 39 fitted and made sense

8 0

3 years ago

Read 2 more answers

A certain electronics manufacturer found that the average cost C to produce x DVD/Blu- ray players can be found using the equati

Marina CMI [18]

Answer:

Minimum average cost = 743.75

Number of dvds to achieve the cost = 62.5

Step-by-step explanation:

Given the cost equation

C = 0.04x² − 5x + 900

To Obtian the minimum average cost ;

Find dc/dx = 0

Diffentiate cost, c it ith respect to x

dc/dx = 2(0.04x) - 5

dc/dx = 0.08x - 5 = 0

0.08x = 5

x = 5 / 0.08

x = 62.5

Substitute the value of x into C to obtain the minimum average cost

C = 0.04(62.5)² - 5(62.5) + 900

C = 743.75

6 0

2 years ago