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2 years ago

Hello can you please help me with it I don't really understand this question

Mathematics

1 answer:

9966 [12]2 years ago

8 0

Answer:

see explanation

Step-by-step explanation:

solving the inequality

$\frac{x}{5}$ ≥ 8 ( multiply both sides by 5 to clear the fraction )

x ≥ 40

Then from the values given

39 → No

40 → Yes

41 → Yes

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3 years ago

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3 years ago

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cupoosta [38]

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3 years ago

Keiko has seven colors of lanyard. She uses three different colors to make a keychain. How many different combinations can she c

AleksAgata [21]

Combination = doesn't matter what order
Permutation = order matters

There are <u>two</u> methods to work out combinations.

Method 1 List out possibilities
123 124 125 126 127 134 135 136 137 145 146 147 156 157 167
234 235 236 237 245 246 247 256 257 267
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456 457 467
567

For a total of 35 combinations.

Method 2 Use a formula.
It's a rather complicated one, so only use it if you have a lot of possibilities.

$\frac{n!}{r!(n-r)!} = \frac{7!}{3!(7-3)!} = \frac{7!}{3!*4!} = \frac{7*6*5*4*3*2*1}{3*2*1*4*3*2*1} = \frac{7*6*5}{3*2*1}=\frac{210}6=35$

(n is the number of choices, r is the amount you choose, and ! is a function that multiplies together all numbers down to 1)

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4 years ago

How would you multiply. ? 3.5 2 ca D 52 3.5

hram777 [196]

Answer:

1274Dac

Step-by-step explanation:

i used photomath but i think thats right hope this helps:)

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3 years ago