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3 years ago

What is the equivalent fraction?

Mathematics

2 answers:

Soloha48 [4]3 years ago

8 0

.5 is equivalent to 1/2 therefore 5/10 is the answer because 5/10 is equivalent to 1/2

dusya [7]3 years ago

7 0

Answer: its 5/10

Step-by-step explanation:

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nika2105 [10]

If you would have to graph x=7, you probably know that this is a vertical line at, well, x=7.

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3 years ago

Slope is -3 and a y-intercept of 7

umka2103 [35]

Answer:

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y=-3x+7

I hope this is what you were looking for ;)

Step-by-step explanation:

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3 years ago

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The manufacturer of banjos spends $250 to make each banjo and sells them for $400. The manufacturer also has fixed costs each mo

raketka [301]

Answer:

The cost for making x banjos is c = $ 400 x

Step-by-step explanation:

Given as :

The making cost of each banjos = $ 250

The selling cost of each banjo = $ 400

Let The cost for making x banjos = c

Now,

∵ For making 1 banjos , the making cost = $ 250

∴ For making x banjos , the making cost = $ 250 × x

Again,

∵ The selling price of 1 banjos = $ 400

∴ The selling price of x banjos = = $ 400 × x

Hence The cost for making x banjos is c = $ 400 x . Answer

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3 years ago

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What is the measure of AC?

Paladinen [302]

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3 years ago

Qualification exams for becoming a state-certified welding inspector are based on multiple-choice tests. As in any multiple-choi

erik [133]

Answer:

(a) The probability distribution of the random variable X is Binomial.

(b) The mean and standard deviation of the 25-question test are 5 and 2 respectively.

Step-by-step explanation:

The random variable X is defined as the number of correct answers given by a person who is guessing each answer on a 25-question exam.

There are five possible answer for every question.

This implies that the probability of getting a correct answer is:

P (X) = 0.20.

There are a total of n = 25 questions.

Every answer is independent of the others.

(a)

The random variable X has finite number of independent trials (i.e. 25 questions). There are only two outcomes for each trial, i.e. Success = correct answer and Failure = wrong answer. Each trial has the same probability of success (, i.e. P (X) = 0.25).

Thus, the probability distribution of the random variable X is Binomial with parameters n = 25 and p = 0.20.

(b)

Compute the mean of the random variable X as follows:

$E(X)=np\\=25\times 0.20\\=5$

Compute the standard deviation of the random variable X as follows:

$SD(X)=\sqrt{np(1-p)}\\=\sqrt{25\times 0.20\times (1-0.20)}\\=2$

Thus, the mean and standard deviation of the 25-question test are 5 and 2 respectively.

(c)

The sample is large and the probability of success is close to 0.50.

So a Normal approximation to binomial can be applied to approximate the distribution of X if the following conditions are satisfied:

1. np ≥ 5

2. n(1 - p) ≥ 5

Check the conditions as follows:

$np=25\times 0.20=5=5\\\\n(1-p)=25\times (1-0.20)=20>5$

Thus, a Normal approximation to binomial can be applied.

So, $X\sim N(5, 2^{2})$

It is provided that the minimum passing score foe the test is such that only 1% of students who are guessing will pass the test.

That is P (X < x) = 0.01.

⇒ P (Z < z) = 0.01

The value of z is -2.33.

Compute the value of x as follows:

$z=\frac{x-\mu}{\sigma}\\\\-2.33=\frac{x-5}{2}\\\\x=5-(2.33\times 2)\\\\x=0.34$

Thus, the value of x is 0.34.

4 0

4 years ago