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Ainat [17]
3 years ago
13

Can someone please explain to me how to do this?

Mathematics
1 answer:
kotykmax [81]3 years ago
8 0
I took a look but could figure it out sorry
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A stack of seven different cards are shuffled and spread out face down if three cards are turned face up how many different thre
Anton [14]
<h2>Answer:35 ways</h2>

Step-by-step explanation:

^nC_{k} is the number of ways of choosing k distinct objects from a lot of n distinct objects.

In the given question,

n=7\\k=3\\

^nC_{k}=\frac{n!}{(n-k)!k!}

So,^7C_{3}=\frac{7!}{3!4!}=\frac{210}{6}=35

So,there are 35 ways in which three distinct cards can be selecte from seven distinct cards.

3 0
3 years ago
Write a rational equation that can be solved by multiplying each side by 5(a+2)
qwelly [4]
What the answer would be is 10 :) hope that u are helped
4 0
3 years ago
What is 1/6 of a full rotation?
Fittoniya [83]

Answer:

the turn is 0.16666666666666666

the degree is 60.000000000148830281

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Determine the equation of the line that is parallel to y=23x+4 and passes through the point (3,7).
Licemer1 [7]

Answer:  y = 23x - 62

<u>Step-by-step explanation:</u>

Parallel lines have the same slope.

y = 23x + 4

  m=23   b=4

Input x = 3, y = 7, & m = 23 into the Point-Slope formula to find the equation or the Slope-Intercept formula to find b (you already have m).  I will choose the latter.

 y = mx + b

 7 = 23(3) + b

 7 = 69 + b

-62 = b

m = 23, b = -62  -->  y = 23x - 62

6 0
3 years ago
Write the equation of a line whose slope is -2 and goes through the point (1,-1)
scoundrel [369]

Answer:

y= -2x+1

Step-by-step explanation:

y=mx+b

Substitute the ordered pairs into the equation

So:

y= -1   m(slope) = -2  x=1   b=?

-1 = (-2)(1) + b

-1 = -2 +b  add 2  on both sides to get b by itself

-1 +2 = b

b=1  

8 0
3 years ago
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