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lukranit [14]
3 years ago
12

True or False. To select 3 items out of 4 distinct objects, use C(4,3).

Mathematics
1 answer:
kenny6666 [7]3 years ago
6 0

Answer:

True.

Step-by-step explanation:

C(4, 3) means the number of combinations from 4 items taking 3 at a time.  We are selecting 3 distinct items and it doesn't say anything about the order in which they are selected , so we use  a combination formula  not a permutation ( where order does matter).

C(4, 3)  = 4! / 3! 1!

= 4*3*2*1 / 3*2*1*1

= 4.

There are 4 ways to select 3 items from 4.

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The lines shown below are parallel. If the green line has a slope of -3/7 what is the slope of the red line?
anastassius [24]
When any lines are parallel that means they have the same slope so the slope of the red line would also have a slope of -3/7
4 0
3 years ago
Anyone here who can help me with this?
Mandarinka [93]

Answer:

D. 16 years old

Step-by-step explanation:

<u>Step 1:</u> Let T be Tien's age and J as Jordan's age (today),

T=\frac{1}{4}J

<u>Step 2:</u> Let T be Tien's age and J as Jordan's age (in 2 years),

T+2=\frac{1}{3} (J+2)

T=\frac{1}{3}(J+2)-2

<u>Step 3:</u> As their age differences will always be similar we can have the two equations above equal to find Jordan's age,

\frac{1}{4} J=\frac{1}{3}(J+2)-2\\\frac{1}{4}J-\frac{1}{3}J=\frac{2}{3}  -2 \\-\frac{1}{12}J= -\frac{4}{3} \\\\J=16

5 0
3 years ago
Ashley is Stacking two boxes on a shelf. The bottom box measures 6 inches x 5 inches x 5 inches. The top is a cube withe one edg
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Just add the volumes of two boxes
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volume of second box will be 4×4×4
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5 0
4 years ago
<img src="https://tex.z-dn.net/?f=%20%7B4%7D%5E%7B2%7D%20%20%2B%20%20%7B9%7D%5E%7B3%7D%20" id="TexFormula1" title=" {4}^{2} +
jeka94

Answer:

Step-by-step explanation:

Anyone who uses Latex as well as you do, shouldn't have any trouble with this question.

4^2: 4 * 4  = 16

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7 0
3 years ago
Use the distributive property <br> 3(4×+5)=「21×+0
Dmitry_Shevchenko [17]

Answer:3(5+7)3(5+7)

Step-by-step explanation:

3 0
1 year ago
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