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3 years ago

Kira made $391 for 17 hours of work. At the same rate, how many hours would she have to work to make $184 ?

Mathematics

2 answers:

natulia [17]3 years ago

4 0

She would have to work 8 hours to make $184.

scoundrel [369]3 years ago

3 0

$\bf \begin{array}{ccll} \$&hours\\ \cline{1-2} 391&17\\ 184&h \end{array}\implies \cfrac{391}{184}=\cfrac{17}{h}\implies h=\cfrac{184\cdot 17}{391}\implies h=8$

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A shipment to a warehouse consists of 2,750 MP3 players. The manager chooses a random sample of 50

Juli2301 [7.4K]

MP3 players in the shipment which are likely to be defective is 330.

Step-by-step explanation:

• Probability is event of an occurrence which is uncertain.

• Probability always lies between 0 to 1.

• The sample of 50 MP3 has 6 defective, to solve it has to be converted.

• Convert percentage in 100 multiply numerator and denominator by 2.

• Result is 6/50 converted to 12/100, bring it to 0.12%.

• 12% is defected in 100% of sample.

• It is found here that 2750 is the population and 12% of 2750.

• 2750 * 0.12 = 330, defective pieces in 2750.

• There are three types of Classical,Empirical or Experimental.

• Classical are ‘n’ number of events find the probability occurrence.

• Empirical or experimental is purely based on events.

5 0

3 years ago

Derek is playing a prank on Grace and hid her pencil inside a tissue box that has a width of 4 inches, a length of 8 inches, and

ohaa [14]

Answer:

9.8 Inch

Step-by-step explanation:

The distance from the upper left corner to the bottom right corner of the box is the longest diagonal of the box.

For a rectangular prism:

Length of the Longest diagonal $=\sqrt{ l^2+h^2+w^2}$

Therefore:

Length of the pencil $=\sqrt{ 8^2+4^2+4^2}$

$=\sqrt{96}\\=9.8$ inch(correct to the nearest tenth of an inch)$

8 0

3 years ago

Read 2 more answers

In a semiconductor manufacturing process, three wafers from a lot are tested. Each wafer is classified as pass or fail. Assume t

Angelina_Jolie [31]

Answer:

$P(X = 0) = 0.027$

$P(X = 1) = 0.189$

$P(X = 2) = 0.441$

$P(X = 3)= 0.343$

Step-by-step explanation:

The probability mass function P(X = x) is the probability that X happens x times.

When n trials happen, for each $x \leq n$ , the probability mass function is given by:

$P(X = x) = pe_{n,x}.p^{x}.(1-p)^{n-x}$

In which p is the probability that the event happens.

$pe_{n,x},$ is the permutation of n elements with x repetitions(when there are multiple events happening(like one passes and two not passing)). It can be calculated by the following formula: