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raketka [301]
3 years ago
13

I have a question about this.

Mathematics
1 answer:
kakasveta [241]3 years ago
4 0
I'm pretty sure it's rectangle
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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
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<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.

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3 years ago
How to divide fractions with concrete models? PLEEASE I HAVE A TEST TOMORRW, I WILL GIVE FIRST ANSWER THAT IS SMART BRANLIEST
Leya [2.2K]

Answer:

So first, there is an acronym for the strategy, KFC.

°π°

Keep the first fraction. Ex, 4/5 ÷ 1/5

Flip the second fraction. Ex, 4/5 ÷ 5/1

Change symbol. Ex, 4/5 ÷ 5/1 turns into 4/5<em>x</em>5/1

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3 years ago
On a test, Summer got 12 multiple choice and 4 constructed response questions correct. Summer scored 8 points more than Kerry wh
Kazeer [188]

Answer:

2m + c = 8

Step-by-step explanation:

Summer's score = Kerry's score + 8

12m + 4c = 10m + 3c + 8

Combining like terms:

2m + c = 8

7 0
3 years ago
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144-120x+25x² help me​
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Answer:

144 - 120x + 25 {x}^{2}  \\ 144 - 95 {x}^{3}

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