3 years ago

How many different 4 letter arrangements can be formed from the letters in the word cards

1 answer:

5 0

Slot method
1st slot, 5 options
2nd slot, 4 options (1 gone to the first slot)
3rd slot, 3 options (1 gone again)
4th slot,2 options (1 less)

multiply
5*4*3*2=120

answer is 120 arrangements

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Answer:

Step-by-step explanation:

y = a(b)^x

a would represent the initial value.

b would represent the change

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RoseWind [281]

Answer:

A = 70

B = 90

Step-by-step explanation:

We know that Car A travels 20 mph faster than Car B.

Assuming the speed of Car B to be x and the speed of Car A to be x+20, we can write:

$\frac{196}{x} =\frac{252}{x+20}$

Taking the reciprocal of both sides to make x the subject:

$196(x+20)=252x$

$196x+3920=252x$

$252x-196x=3920$

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It is the sum of the integers from 1-41 minus the sum of the integers from 1-24 divided by 17 the sum of the integers from 1-41 is (42)(45)/2 = 861 the sum of the integers from 1-24 is (24)(25)/2 = 300 (861-300)/17 = 33 The answer is 33

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