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krek1111 [17]
3 years ago
6

Kai worked a total of 30 hours last week on saturday and sunday he worked five times as many hours than he worked the rest of th

e week how many hours did he work the rest of the week
Mathematics
2 answers:
dalvyx [7]3 years ago
7 0
The answer is he worked 6 hours
djverab [1.8K]3 years ago
6 0
6 hours. 30 divided by 5 equals six
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Solve the equation P=KTV for the letter K.
ddd [48]

Answer:

K = \frac{P}{TV}

Step-by-step explanation:

P = KTV

Divide both sides by TV

(P/TV) = K

5 0
2 years ago
Suppose that a manager is interested in estimating the average amount of money customers spend in her store. After sampling 36 t
musickatia [10]

Answer:

The confidence interval for the mean is given by the following formula:

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}   (1)

The 90% confidence interval for this case would be (38.01, 44.29) and is given.

The best interpretation for this case would be: We are 90% confident that the true average is between $ 38.01 and $ 44.29 .

And the best option would be:

The store manager is 90% confident that the average amount spent by all customers is between S38.01 and $44.29

Step-by-step explanation:

Assuming this complete question: Which statement gives a valid interpretation of the interval?

The store manager is 90% confident that the average amount spent by the 36 sampled customers is between S38.01 and $44.29.

There is a 90% chance that the mean amount spent by all customers is between S38.01 and $44.29.

There is a 90% chance that a randomly selected customer will spend between S38.01 and $44.29.

The store manager is 90% confident that the average amount spent by all customers is between S38.01 and $44.29

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

Solution to the problem

The confidence interval for the mean is given by the following formula:

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}   (1)

The 90% confidence interval for this case would be (38.01, 44.29) and is given.

The best interpretation for this case would be: We are 90% confident that the true average is between $ 38.01 and $ 44.29 .

And the best option would be:

The store manager is 90% confident that the average amount spent by all customers is between S38.01 and $44.29

8 0
3 years ago
Two equivalent expressions have the same _____ even though they may be written in different ways.
Svetach [21]

Answer:

Value

Step-by-step explanation:

Value because order can be different and they can still be the same!

For example, 3x+2 = 2+3x different order but still are equivalent!

x = -2/3, so their values are equivalent!

Hope this helps!

Please mark brainliest if you think I helped! Would really appreciate!

3 0
3 years ago
Read 2 more answers
Write the equation of the given line in slope-intercept form.​
gizmo_the_mogwai [7]

Answer:

y = 2x - 1

Step-by-step explanation:

Slope intercept form: y=mx+b

point a: (1, 1)

point b: (2, 3)

1. Find the slope of the equation

Equation for slope(mx): (y2- y1)/ (x2-x1)

(3-1)/(2-1)= 2

slope: 2

2. Pick any of the two point to find the "b" and plug in the coordinates of the point to find the y-intercept of the equation.

point a: y=1, x=1

y=mx+b

1=2(1) + b

b= -1

3. Plug the answers you found above into the slope-intercept form

Overall equation:

y=2x - 1

7 0
3 years ago
A-plus Auto Body is painting designs on a customers car. They had 18pints of blue paint on hand. They used 1/2 of it for the fla
Mashutka [201]
1/2 of 18 pints is 9 because 18/2=9

They have 9 pints left.

1/3 of 18 pints is 6 because 1/3*18=6

9-6=3

There are 3 pints left.

They need 7.75 pints and they only have 3 so 7.75-3=4.75 (or 4 3/4)

They need 4 3/4 more pints of blue paint
7 0
3 years ago
Read 2 more answers
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