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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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Which of the following was a primary reason France sought to colonize North America?
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3 years ago
Endure all, a manufacturer of batteries claims that the lifetime of their batteries is normally distributed with a mean of 500 h
ycow [4]

Based on the z-score, an Endure All battery selected at random has a 10.56% chance of lasting more than 550 hours.

<h3>What are z-scores?</h3>

How closely a value relates to the mean of a set of values is expressed by a Z-score.

The Z-score is created using standard deviations from the mean.

A data point's total value is equal to the mean value when the Z-score of the data point is equal to 0.

So, in order to determine how far the raw score deviates from the mean, the Z score is used.

The following steps are used to determine the Z score:

z = (x - μ)/σ

We know that:  x > 550 and μ = 500, σ = 40

z = 550 - 500 / 40

z = 1.25

The graph of the normal distribution indicates:

P(z > 1.25) = 1 - P(z < 1.25)

P(z > 1.25) = 1 - 0.8944

P(z > 1.25) = 0.1056

Therefore, based on the z-score, an Endure All battery selected at random has a 10.56% chance of lasting more than 550 hours.

Know more about the z-scores here:

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1 year ago
This hyperbola is centered at theorigin. Find its equation.Foci: (-2,0) and (2,0)Vertices: (-1,0) and (1,0)
beks73 [17]

SOLUTION

From the question, the center of the hyperbola is

\begin{gathered} (h,k),\text{ which is } \\ (0,0) \end{gathered}

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c is the distance between the center to foci, which is -2 or 2.

b is given as

\begin{gathered} b^2=c^2-a^2 \\ b^2=2^2-1^2 \\ b=\sqrt[]{3} \end{gathered}

But equation of a hyperbola is given as

\frac{(x-h)^2}{a^2}-\frac{(y-k)^2}{b^2}=1

Substituting the values of a, b, h and k, we have

\begin{gathered} \frac{(x-0)^2}{1^2}-\frac{(y-0)^2}{\sqrt[]{3}^2}=1 \\ \frac{x^2}{1}-\frac{y^2}{3}=1 \end{gathered}

Hence the answer is

\frac{x^2}{1}-\frac{y^2}{3}=1

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1 year ago
A bean plant grows at a constant rate for a month. After 10 days, the plant is
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The height of plant y =x+25

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Answer:

15) 20.4

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