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riadik2000 [5.3K]
3 years ago
11

Josh and Mae work at a concession stand. They each earn $8 per hour, Josh worked three hours more than Mae. If Josh and Mae earn

ed a total of $120, how many hours did Josh work?
I need helppp
Mathematics
2 answers:
matrenka [14]3 years ago
6 0
8x15=120

If Josh worked 3 hours more, Josh worked 3hours more than Mae, he worked 10.5 hours and Mae 4.5 hours



I’m not %. sure, but I think you can see what I was doing.



Super sorry if I’m wrong.
vampirchik [111]3 years ago
5 0

Answer:

12 hours

Step-by-step explanation:

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Answer:

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A new medical test provides a false positive result for hepatitis 2% of the time that is a perfectly healthy subject being teste
Oxana [17]
Given that X <span>be the number of subjects who test positive for the disease out of the 30 healthy subjects used for the test.

The probability of success, i.e. the probability that a healthy subject tests positive is given as 2% = 0.02


Part A:

</span><span>The probability that all 30 subjects will appropriately test as not being infected, that is the probability that none of the healthy subjects will test positive is given by:

</span>P(X)={ ^nC_xp^x(1-p)^{n-x}} \\  \\ P(0)={ ^{30}C_0(0.02)^0(1-0.02)^{30-0}} \\  \\ =1(1)(0.98)^{30}=0.5455
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Part B:

The mean of a binomial distribution is given by

</span>\mu=np \\  \\ =30(0.02) \\  \\ =0.6
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The standard deviation is given by:

</span>\sigma=\sqrt{np(1-p)} \\ \\ =\sqrt{30(0.02)(1-0.02)} \\ \\ =\sqrt{30(0.02)(0.98)}=\sqrt{0.588} \\  \\ =0.7668
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Part C:

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3 years ago
What is 18.248287 rounded to the nearest tenth? <br>​
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Answer:

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Step-by-step explanation:

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2 years ago
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vlada-n [284]

The value of x is less than or equal to 2.25.

<h2>Linear system</h2>

It is a system of an equation in which the highest power of the variable is always 1. A one-dimension figure that has no width. It is a combination of infinite points side by side.

<h3>Simplification</h3>

Simplification is to make something easier to do or understand and to make something less complicated.

Given

The expression is 47.75 + x ≤ 50.

<h3>To find</h3>

The value of x.

<h3>How to find the value of x?</h3>

The expression is 47.75 + x ≤ 50.

On simplifying,

47.75 + x ≤ 50

            x ≤  50 - 47.75

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Thus, the value of x is less than or equal to 2.25.

More about the linear system link is given below.

brainly.com/question/20379472

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3 0
3 years ago
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