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3 years ago

Just in case you can't see the first one

Mathematics

1 answer:

Semenov [28]3 years ago

5 0

The 4th pix.....the lower right one is correct. Any point that is less than 2 on x cordinate

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How much does 7 go into 125

Setler [38]

17 goes into 125 17.857 times

6 0

3 years ago

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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

Rlly easy!

Black_prince [1.1K]

Answer:

a star

Step-by-step explanation:

I think

Pls brainliest asap

5 0

3 years ago

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Transpose T = 2π/W making W the subject.

olchik [2.2K]

Answer:

W = $\frac{2π}{T}$

Step-by-step explanation:

To transpose the equation with a given subject means to isolate that variable. To move W to the other side, you must first multiply both sides by W:

TW = 2π

Finally, divide both by T to isolate W:

W = $\frac{2π}{T}$

7 0

4 years ago

The world's largest cookie was baked in North Carolina in 2003. Its diameter was 100 feet and it contained about 6,000 pounds of

Natasha2012 [34]

Answer:

16022 square foot

Step-by-step explanation:

The world's largest cookie was baked in North Carolina in 2003. Its diameter was 100 feet and it contained about 6,000 pounds of chocolate chips! If the cookie was a cylinder 1 foot tall, and you wanted to cover it with icing, how many square inches would you have to ice? Use 3.14 for .

We find the surface area of the cylinder

= 2πr(r + h)

r = Diameter /2 = 100 feet/2

r = 50 feet

h = 1 feet

Hence

2 × 3.14 × 50(50 + 1)

= 16022.122533 square foot

= 16022 square foot

4 0

3 years ago