How many combinations of 3 rocks can you choose from 8 rocks

Answers

Answer 1

Answer: 2 because 3 times 2 is 6, so if u did 3 times 3 it would be too high to instead it would be 2

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Find the product. (12p - 3)(12p + 3)
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Can someone please solve 10n - 3 = 7n + 21

Answers

$10 n-3 = 7n+21$

Add 3 to both sides :

$10n-3+3=7n+21+3$

$10n=7n+24$

Subtract 7 n from both sides:

$10n-7n=7n+24-7n$

$3n=24$

Divide both sides by 3 :

$(3n)/(3) = (24)/(3)$

$n = 8$

hope this helps!

What is the average (mean) of the following numbers: 2, 5, 8, and 1? Options: 4 3 5 4.5

Answers

Answer:

mean = 4

Step-by-step explanation:

the average ( or mean ) of a data set is calculated as

mean = $(sum)/(count)$

sum = 2 + 5 + 8 + 1 = 16

count = 4 ( number of values in data set )

substitute these values into the formula for mean

mean = $(16)/(4)$ = 4

Final answer:

The mean (average) of the numbers 2, 5, 8, and 1 is calculated by adding the numbers together (which gives 16), and then dividing this sum by the total number of numbers (4). So, the mean of these numbers is 4.

Explanation:

The subject of this question is Mathematics and it relates to the concept of statistical mean (average). To find the mean of the numbers 2, 5, 8, and 1, you add them all up and then divide by the number of numbers.

First, add the numbers together: 2 + 5 + 8 + 1 = 16.
Then, divide by the total number of numbers, which in this case is 4. 16 divided by 4 is 4.

So, the mean (average) of 2, 5, 8, and 1 is 4.

Learn more about Mean (average) here:

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Lines c and d are perpendicular. If the slope of like c is -4, what is the slope of line d?A. 4
B. -1.4
C. -4
D. 1/4

Answers

Answer:

A 4

Step-by-step explanation:

-1/-4 = 4

Round to the nearest hundredth
$25,625 divided by 16.5

Answers

Answer:

Approximately 1,552.42.

Step-by-step explanation:

To round the result of $25,625 divided by 16.5 to the nearest hundredth, you need to perform the division first and then round the quotient. Here are the steps:

1. Divide $25,625 by 16.5:

$25,625 ÷ 16.5 = 1,552.42

2. Now, round the quotient, 1,552.42, to the nearest hundredth.

The hundredths place is the second decimal place after the decimal point.

- If the third decimal place is 5 or greater, you round up the second decimal place.

- If the third decimal place is less than 5, you keep the second decimal place as it is.

In this case, the second decimal place is 4, so we keep it as it is.

Therefore, rounding $25,625 divided by 16.5 to the nearest hundredth gives us:

$25,625 ÷ 16.5 ≈ 1,552.42

So, when rounded to the nearest hundredth, $25,625 divided by 16.5 is approximately 1,552.42.

Hope this helps.

A student is asked to calculate the volume, in milliliters, of 2 cups of oil. there are 225mL per cup. the student calculates the volume as follows:volume=2cups x 1cup/25mL= 8 cups
list three errors the student made

Answers

To calculate the volume, we use the data given above. For this problem we are asked to convert cups to mL.

volume = ( 2 cups) 225 mL / 1 cup = 450 mL

The student's error in converting is that she divide the conversion factor instead of multiplying it, wrote the conversion factor incorrectly and the units of his final answer is wrong.

Answer:

This is the right answer

Step-by-step explanation:

The student got the incorrect Midpoint because, they subtracted the x and y values rather than adding them. The correct Midpoint would be (6.5, 4.5).

A pool shaped like a rectangle prism is 40 feet long 20 feet wide and 4 feet deep attached to the side of the pool is a hot tub with 1/4 the volume of the pool what is the total volume of the pool and hot tub?

Answers

V=legnth times width times height
pool=40 by 20 by 4
pool=40 times 20 times 4
pool=3200 ft^3
hot tub is 1/4 of pool
hot tub=1/4 times 3200=800

total is pool+hot tub=3200+800=4000 ft^3

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If the domain of the square root function f(x) is x<=7, which statement must be true?7 is subtracted from the x-term inside the radical.The radical is multiplied by a negative number.7 is added to the radical term.The x-term inside the radical has a negative coefficient.

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