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gogolik [260]
3 years ago
13

If you earn 25$ babysitting for 3 hours. How much wold I earn in 7 hours?

Mathematics
1 answer:
Wewaii [24]3 years ago
8 0

Answer: $58.33 (Rounded bc it ends up in becoming a decimal)

Explanation: Let's make an equation for this problem. We know that if she works 3 hours for $25, 3*2=6 with 1 hour leftover. We can substitute those 6 hours for 2 sets of the 3 hours, giving us $50 so far. For the last hour, we have to divide 25 by 3 because it's only 1 hour instead of 3, meaning she'll get paid a third of the original pay rate. 25/3 equals 8.33333333334, so we'll just round that to 8.33, since it's cash. 50+8.33=$58.33. So, you'd earn 58 dollars and 33 cents for working for 7 hours.

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Answer:

So the value of the test statistic is -0.85.

Step-by-step explanation:

We know that a sample of 1800 computer chips revealed that 53% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature states that 54% of the chips do not fail in the first 1000 hours of their use.

We get that:

n=1800\\\\p_1=53\%=0.53\\\\p_2=54\%=0.54\\

We calculate the standar deviation:

\sigma=\sqrt{\frac{0.53 \cdot (1-0.53)}{n}}=\sqrt{\frac{0.53 \cdot 0.47}{1800}}=0.01176

We calculate the value of the test statistic:

z=\frac{p_1-p_2}{\sigma}=\frac{0.53-0.54}{0.01176}=-0.85

So the value of the test statistic is -0.85.

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4 years ago
What is the equation of the following line written in general form (4,5) (1,2)
a_sh-v [17]
The answer is y= 1 + 1x

because the slope is 1 shown by this table:
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and if the slope is one then 2-1 is 1 and the y intercept is 0,1.

4 0
3 years ago
5. What is the center of (0.1, 0.3, 0.02, 0.09, 0.4, 0.05, 0.26}?<br> 0.2<br> 0.3<br> 0.1<br> 0.4
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Answer:

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Step-by-step explanation:

The data set is:

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The number in the middle is 0.09. Hope this helps!

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At least 3. Have a nice day! :)
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