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2 years ago

...........answers plz

Mathematics

1 answer:

Ira Lisetskai [31]2 years ago

3 0

Answer:

Step-by-step explanation:

m = 21, n = 12

so we just plug these into the equation

(1/3)(21) -1 -(1/2)(12)

(21/3) -1 -(12/2)

7 -1 -6

6 -6

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Daniel got 86% on his test and he solved 5 points extra credit problem. What would be his new grade on this test?

tensa zangetsu [6.8K]

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Janice examines the given triangle and estimates that the longest side has a length of 25 units―if it is a right triangle. How does her estimate compare to the actual length? It is under by approximately 0.6 units.

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A particular sale involves four items randomly selected from a large lot that is known to contain 9% defectives. Let X denote th

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The expected repair cost is $3.73.

Step-by-step explanation:

The random variable X is defined as the number of defectives among the 4 items sold.

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The repair cost of the item is given by:

$C=3X^{2}+X+2$

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$E(C)=E(3X^{2}+X+2)$

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Compute the variance of X as follows:

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The variance of X is 0.3276.

The variance can also be computed using the formula:

$V(X)=E(Y^{2})-(E(Y))^{2}$

Then the formula of $E(Y^{2})$ is:

$E(Y^{2})=V(X)+(E(Y))^{2}$

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$E(Y^{2})=V(X)+(E(Y))^{2}$

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$E(C)=3E(X^{2})+E(X)+2$

$=(3\times 0.4572)+0.36+2\\=3.7316\\\approx 3.73$

Thus, the expected repair cost is $3.73.

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2 years ago

Use multiplication to find three ratios equivalent to 8:12

tatyana61 [14]

Ok so 8:12 can be 8 to 12, or 8\12

do that help?

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2 years ago

Read 2 more answers