Mathematics: Ruth has the following set of refrigerator magnets: {a, b, c, d, e}. (a) how many different three-letter strings can she form with these magnets? (b) how many different three-letter strings can she form if the middle letter must be a vowel?

Assignment: Explanation: [ Step One ] Break Expression Into Groups[ Step Two ] Factor Out x From [ Step Three ] Factor Out 13 From [ Step Four ] Factor Out Common Term...

Ruth has the following set of refrigerator magnets:

Ответ:

olejlund8073

01.01.2022

Mathematics

a. 60

b.24

Step-by-step explanation:

a. We use permutation, it would be 3 taken out of 5, or 5*4*3

b.if A or E must be used, then we have 4*3*2

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Ответ:

briansalazar17

25.12.2021

Mathematics

Assignment: $\bold{Factor \ x^2+15x+26}$

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$\boxed{\bold{\left(x+2\right)\left(x+13\right)}}$

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Explanation: $\downarrow\downarrow\downarrow$

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[ Step One ] Break Expression Into Groups

$\bold{\left(x^2+2x\right)+\left(13x+26\right)}$

[ Step Two ] Factor Out x From $\bold{x^{2} \ + \ 2x}$

$\bold{x^2+2x}$

[ Step Three ] Factor Out 13 From $\bold{13x+26}$

$\bold{x\left(x+2\right)+13\left(x+2\right)}$

[ Step Four ] Factor Out Common Term $\bold{x \ + \ 2}$

$\bold{\left(x+2\right)\left(x+13\right)}$

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$\bold{\rightarrow Rhythm \ Bot \leftarrow}$

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Ruth has the following set of refrigerator magnets: {a, b, c, d, e}. (a) how many different three-letter strings can she form with these magnets? (b) how many different three-letter strings can she form if the middle letter must be a vowel?

Ответ:

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