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ICE Princess25 [194]

3 years ago

9

the area of a door is 3024 square inches. if the length of the door is 48 inches longer than the width of the door, what is the

width of the door?

1 answer:

Alex73 [517]3 years ago

5 0

Answer:

36 inches

Step-by-step explanation:

it just is

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nataly862011 [7]

A. 8

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3 0

3 years ago

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The value of a classic car is given by

egoroff_w [7]

Answer:

the answer is c

Step-by-step explanation:

you add sub mult and divide it's math it's simple

3 0

3 years ago

2. The side lengths of a square measure 25.3 cm. Estimate the area of the

Katarina [22]

Answer:

625 sq ft.

Step-by-step explanation:

25 cm is close to 25.3 so our estimate is 25 * 25 = 625.

5 0

3 years ago

The following function is probability mass function. f left-parenthesis x right-parenthesis equals StartFraction 2x plus 1Over 2

lora16 [44]

Answer:

a) Mean = 2.6

B) Variance = 9.2

Step-by-step explanation:

We are given the following probability mass function in the question:

$F(x) = \dfrac{2x+1}{25}, x = 0,1,2,3,4$

a) Mean of random variable

$\mu = \displaystyle\sum x_iF(x_i)\\\\=0(\dfrac{1}{25}) + 1(\dfrac{2+1}{25}) + 2(\dfrac{4+1}{25}) + 3(\dfrac{6+1}{25}) + 4(\dfrac{8+1}{25})\\\\=\dfrac{3+10+21+36}{25} = \dfrac{70}{25} = 2.8$

b) Variance of the random variable

$\sigma^2 = \displaystyle\sum x_i^2F(x_i)\\\\=0^2(\dfrac{1}{25}) + 1^2(\dfrac{2+1}{25}) + 2^2(\dfrac{4+1}{25}) + 3^2(\dfrac{6+1}{25}) + 4^2(\dfrac{8+1}{25})\\\\=\dfrac{3+20+63+144}{25} = \dfrac{230}{25} = 9.2$

6 0

3 years ago

53 + 53 + 47 + 47 + 70 =<br> Solve And u get 40 points

r-ruslan [8.4K]

Answer:

the answer ur looking for is 270

7 0

3 years ago