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3 years ago

How to find number of combinations.

1 answer:

7 0

Answer: Remember, the formula to calculate combinations is nCr = n! / r! * (n - r)!, where n represents the number of items, and r represents the number of items being chosen at a time.

Step-by-step explanation:

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What is the slope of this line?

uranmaximum [27]

Answer:

m=-1

Step-by-step explanation:

Slope is:

m=(y1-y2)/(x1-x2)

Let's choose two values for (x1,y1) and (x2,y2)

x1=-2

y1=0

x2=0

y2=-2

Plug into slope formula:

m=(0-(-2))/(-2-0)

m=2/-2=-1

8 0

4 years ago

Read 2 more answers

What type of triangle has side lengths 12, 13, and 2√3?

Travka [436]

Answer:

The triangle is an obtuse scalene triangle

Step-by-step explanation:

we know that

if $c^{2}=a^{2}+b^{2}$ --------> is a right triangle

if $c^{2}>a^{2}+b^{2}$ --------> is an obtuse triangle

if $c^{2}$ --------> is an acute triangle

where

c is the greater side

we have

$c=13\ units$

$a=12\ units$

$b=2\sqrt{3}\ units$

$c^{2}=13^{2}=169$

$a^{2}+b^{2}=12^{2}+(2\sqrt{3})^{2}=156$

$c^{2}>a^{2}+b^{2}$ -------> is an obtuse triangle

Remember that

The given triangle has three different length side

Is a scalene triangle

therefore

The triangle is an obtuse scalene triangle

4 0

3 years ago

The table shows the height of water in a pool as it is being filled. A table showing Height of Water in a Pool with two columns

icang [17]

Answer:

The height of the water increases 2 inches per minute.

Step-by-step explanation:

the slope is always the ratio of

y coordinate change / x coordinate change

in our case, x is the time (minutes), and y is the water height (inches).

we see, the longer the pool get filled, the higher the water gets. logical, right ?

by checking the data points we see :

with every 2 minutes passing the water height increases by 4 inches.

so, the slope is +4/+2 = 2/1 = 2

and that ratio tells us now the increase of the water height with every fraction or multiple of the measured 2-minute interval.

every 2 minutes 4 inches more.

so, e.g. every 3×2 = 6 minutes we get 3×4 = 12 inches more.

and - every 1/2 × 2 = 1 minute more we get 1/2 × 4 = 2 inches more.

4 0

2 years ago

Identify the 3D shape

Rudik [331]

Answer and Step-by-step explanation:

The 3D shape shown is a rectangle. This is the net-form of a rectangle.

<em><u>#teamtrees #PAW (Plant And Water)</u></em>

5 0

3 years ago

Read 2 more answers

1 gallon = 4 quarts

nekit [7.7K]

4 gallons= 512 ounces

Answer:D

8 0

4 years ago