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3 years ago

Help me please. I will mark brainliest!

Mathematics

1 answer:

mel-nik [20]3 years ago

4 0

Answer:

The answer is 6.5 hours.

Step-by-step explanation:

If you multiply the hours need to work during that week days(6) and the hours worked during the weekend(3.5) you get 33.5 hours worked over all. then, you subtract 40(the hours wanted) and 33.5(the hours worked normally) and you get 6.5.

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There are 10 soccer teams at the sunnydale soccer league. Each team will play every other team once. How many games will there b

ollegr [7]

It’s either 40 or 5 games because it says that each team will play every other team once

5 0

3 years ago

Which equation is equivalent to

RSB [31]

Answer:

Step-by-step explanation:

(1/3)^x=27^(x+2)

3^(-x)=3^(3(x+2))

3^(-x)=3^(3x+6)

7 0

3 years ago

The mean high temperature on a particular day in January is 31 degrees F and the standard deviation is 8.7 degrees. One year, th

Basile [38]

Answer:

The Z-score for that day's temperature is 2.41, and since Z > 2, this temperature is significantly high.

Step-by-step explanation:

Z-score:

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

If $|Z| > 2$ , the measure X is significantly high(Z > 2) or significantly low(Z < -2).

The mean high temperature on a particular day in January is 31 degrees F and the standard deviation is 8.7 degrees.

This means that $\mu = 31, \sigma = 8.7$

One year, the temperature was 52 degrees F on that day.

This means that $X = 52$ .

What is the Z-score for that day's temperature?

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{52 - 31}{8.7}$

$Z = 2.41$

The Z-score for that day's temperature is 2.41, and since Z > 2, this temperature is significantly high.

8 0

3 years ago

Employee A gets paid $150 weekly, plus $0.50 for each latte they sell. If he was paid $275,

Andrei [34K]

Answer:

550 lattes he sold this week

Step-by-step explanation:

$275÷$0.50= 550

3 0

3 years ago

Adam and his dad share the cost of the meal in the ratio of 2:3. Adam’s dad pays £52.20. What is the total cost of the meal

Ne4ueva [31]

We have to calculate the total cost of the meal. We know that Adam ( A ) and his dad ( D ) share the cost of the meal in the ratio 2 : 3 and that Adam`s dad pays 52.20 Pounds. So A : D = 2 : 3; A : 52.20 = 2 : 3. Using the cross products, A * 3 = 2 * 52.20; A * 3 = 104.40; A = 104.40 : 3; A = 34.80 Pounds. Finally, A + D = 34.80 + 52.20 = 87.00. Answer: The total cost of the meal is 87 Pounds<span>. </span>

6 0

3 years ago