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Mazyrski [523]
3 years ago
12

What is the solution to the equation 4 + V2y = 6? O y= 1 O y = 4 O y= 500 O y= 2000

Mathematics
1 answer:
FrozenT [24]3 years ago
6 0

Answer:

y=1

Step-by-step explanation:

because 2×1=2 and when you add 4 to it you will get 6

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iris [78.8K]
100 =d


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3 years ago
Find the standard deviation of the following data. Round your answer to one decimal place. x 0 1 2 3 4 5 P(X
lbvjy [14]

Answer:

<em></em>\sigma = 1.8<em></em>

<em></em>

Step-by-step explanation:

Given

\begin{array}{ccccccc}x & {0} & {1} & {2} & {3} & {4}& {5} \ \\ P(x) & {0.2} & {0.1} & {0.1} & {0.2} & {0.2}& {0.2} \ \end{array}

Required

The standard deviation

First, calculate the expected value E(x)

E(x) = \sum x * P(x)

So, we have:

E(x) = 0 * 0.2 + 1 * 0.1 + 2 * 0.1 + 3 * 0.2 + 4 * 0.2 + 5  * 0.2

E(x) = 2.7

Next, calculate E(x^2)

E(x^2) = \sum x^2 * P(x)

So, we have:

E(x^2) = 0^2 * 0.2 + 1^2 * 0.1 + 2^2 * 0.1 + 3^2 * 0.2 + 4^2 * 0.2 + 5^2  * 0.2

E(x^2) = 10.5

The standard deviation is:

\sigma = \sqrt{E(x^2) - (E(x))^2}

\sigma = \sqrt{10.5 - 2.7^2}

\sigma = \sqrt{10.5 - 7.29}

\sigma = \sqrt{3.21}

<em></em>\sigma = 1.8<em> --- approximated</em>

5 0
3 years ago
Jack collected 31.1 pounds of cans to recycle and plans to collect 5.9 more pounds each week. Write an equation in slope-interce
butalik [34]

Answer:36.10

Step-by-step explanation: add 31+5= 36 the other one 1 +9 = 10 that's the answer please mark me as brainlest

8 0
2 years ago
How are 1/4 of 12 and 12 divided by 4 related????
Jobisdone [24]
Both expressions are related because 12 divided by 4 equals to 3, and 1/4 of 12 equals to 3 too.
3 0
3 years ago
A popular ride-sharing app charges an
Nana76 [90]

Answer:

2.20

Step-by-step explanation:

2.20

6 0
3 years ago
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