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3 years ago

Please help, thank you

Mathematics

2 answers:

Aleksandr [31]3 years ago

5 0

Answer:

-5

Step-by-step explanation:

$\frac{-5^5}{(-5)^2 (-5)^2}$
$\frac{-3125}{(-5)^2 (-5)^2}$
$\frac{-3125}{25(-5)^2}$
$\frac{-3125}{(25)(25)}$
$\frac{-3125}{625}$
$-5$

Alex_Xolod [135]3 years ago

4 0

Answer:

- 5

Step-by-step explanation:

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g Suppose a factory production line uses 3 machines, A, B, and C for making bolts. The total output from the line is distributed

Vladimir [108]

Answer:

The probability that it came from A, given that is defective is 0.362.

Step-by-step explanation:

Define the events:

A: The element comes from A.

B: The element comes from B.

C: The element comes from C.

D: The elemens is defective.

We are given that P(A) = 0.25, P(B) = 0.35, P(C) = 0.4. Recall that since the element comes from only one of the machines, if an element is defective, it comes either from A, B or C. Using the probability axioms, we can calculate that

$P(D) = P(A\cap D) + P(B\cap D) + P(C\cap D)$

Recall that given events E,F the conditional probability of E given F is defined as

$P(E|F) = \frac{P(E\cap F)}{P(F)}$ , from where we deduce that

$P(E\cap F) = P(E|F)P(F)$ .

We are given that given that the element is from A, the probability of being defective is 5%. That is P(D|A) =0.05. Using the previous analysis we get that

$P(D) = P(A)P(D|A)+P(B) P(D|B) + P(C)P(D|C) = 0.05\cdot 0.25+0.04\cdot 0.35+0.02\cdot 0.4 = 0.0345$

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$P(A|D) = \frac{P(A\cap D)}{P(D)}= \frac{P(D|A)P(A)}{P(D)}= \frac{0.05\cdot 0.25}{0.0345}= 0.36231884$

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3 years ago

What are some good notes I can use to study for my algebra exam tomorrow?

zlopas [31]

Answer:

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Step-by-step explanation:

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3 years ago

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Mr. Gonzales has only $42.50 to spend at a clothing store. He wants to buy a shirt that costs $29, including tax, and some brace

lisabon 2012 [21]

Answer: The equation is $29 + x*$4.50 = $42.50, and the solution is x = 3

Step-by-step explanation:

The data we have is:

Gonzales has $42.50

He wants to buy:

a shirt that costs $29

some bracelets that cost $4.50 each.

The equation that we need to solve is:

Total cost = money that Gonzales has.

The cost is $29 + x*$4.50

where x is the number of bracelets he can buy.

The equation that we need to solve is:

$29 + x*$4.50 = $42.50

to solve it we must isolate x:

x*$4.50 = $42.50 - $29 = $13.50

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So we have that Mr. Gonzales can buy a total of 3 bracelets.

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3 years ago

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Write the hourly wage 15 dollars an hour as a fraction

amid [387]

it can be written like this, hope this helps: $15/hour <3

4 0

3 years ago

a recipe called for the ratio of sugar to flour to be 5 to 1 if you use 35 ounces of sugar how many ounces of flour do you need

den301095 [7]

7

The answer is 7
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4 0

3 years ago

Please help, thank you​

Please help, thank you