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mihalych1998 [28]
3 years ago
13

I need help please and thank you

Mathematics
1 answer:
Viefleur [7K]3 years ago
5 0

Answer:

6

Step-by-step explanation:

There are four different kinds of meat items in the menu.

And we are asked for the combination of 2.

So, here n = 4 and k = 2.

That is from 4 we choose 2. Hence, $ ^{n} \textrm{C}_{k} = ^{4} \textrm{C}_{2}

We have the formula: $ ^{n} \textrm{C}_{k} = \frac{n!}{k!(n - k)!} $

Substituting, we get:

$ ^{4} \textrm{C}_{2}  = \frac{4!}{2!(4 - 2)!}

= $ = \frac{4!}{2!. 2!} = \frac{24}{4} $

= 6

Hence, there are six ways in which the meat combos  can be made.

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Answer:

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Step-by-step explanation:

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4 0
3 years ago
Find the area of a circle with diameter, <br> d<br> = 6.2m.<br> Give your answer rounded to 1 DP.
astraxan [27]

Answer:

3.14(3.1)^2 = 30.1754

Step-by-step explanation:

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3 0
3 years ago
The variable c varies directly with a and inversely with b, and c = 3/20 when a = 2 and b =5.
RUDIKE [14]

Answer: k = 200/3

Step-by-step explanation:

If a variable, a varies directly with a variable, c, it means that as a increases, c increases and as a decreases, c decreases.

Also, If a variable, a varies inversely with a variable, b, it means that as a increases, b decreases and as a decreases, c increases.

The variable c varies directly with a and inversely with b. We would introduce a constant of variation, k. Therefore

a = kc/b

If c = 3/20 when a = 2 and b =5, then

2 = (k × 3/20)/5 = 3k/100

Cross multiplying, it becomes

3k = 100 × 2 = 200

k = 200/3

7 0
3 years ago
Read 2 more answers
Can someone help me with these ignore the place your answer in the gridd
madreJ [45]

#1

Apply pythagorean theorem

  • L=12ft
  • B=9ft

So

Diagonal

  • √L²+B²
  • √12²+9²
  • √144+81
  • √225
  • 15ft

#2

Again apply

  • H²=P²+B²
  • H²=3²+9²
  • H²=9+81
  • H²=90
  • H=√90ft
  • H=9.5ft
4 0
2 years ago
Carmen wants to know the favorite lunch menu among 6th grade students. Which types of survey below would give Carmen valid resul
Vilka [71]

Answer:

making a bar graph

Step-by-step explanation:

list only a few different meals and then ask them, dont just record every meal or the results may be no help at all.

i hope this helps u pls give a thx and a brainliest wanna level up,

leave a comment if i'm wrong

7 0
3 years ago
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