3 years ago

How many permutations exist of the letters a, b, c, d taken four at a time?

1 answer:

3 0

There are 24 permutations.

The number of permutations of 4 objects taken 4 at a time is given by
4!/(4-4)! = 4!/0! = 4!/1 = 4! = 24

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90×10 4 please help me guys

lubasha [3.4K]

if you mean 90 × 10⁴

then the answer would be, 900000.

but if you mean 9 × 10⁴ then the answer would be, 90000.

hope it helps.

Bye.

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3 years ago

To determine her power usage, Keri divides up her day into three parts: morning, afternoon, and evening. She then measures he

marusya05 [52]

Answer:

Stratified Sampling

Step-by-step explanation:

Since Keri divides the day into different strata and each unit is selected from each strata randomly. So, it is Stratified Sampling.

Further, In Stratified Sampling population is divided into several groups such that within the group it is homogeneous and between the group it is heterogeneous. And now a selection of each stratum and unit has an equal chance of selection.

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3 years ago

Help ASAP Geometry 20 points

Alja [10]

Answer:

(3, 3 )

Step-by-step explanation:

Under a translation < 8, 0 > then

A(- 5, - 3 ) → (- 5 + 8, - 3 + 0 ) → (3, - 3 )

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Under a reflection in the x- axis

a point (x, y ) → (x, - y ), thus

(3, - 3 ) → (3, 3 )

8 0

3 years ago

Add. 5/12 + 7/8 Write your answer as a fraction in simplest form.

Anastasy [175]

5/12=10/24 and 7/8= 21/24, add those and you will get 31/24 subtract 31 from24 and get 7 your new fraction is 1 7/24 that is 5/12 + 7/8 in simplest form

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3 years ago

Jay is 3 years less than 4 times Nelly’s age ( n ). Which expression represents Jay’s age?

NeX [460]

Answer:

Step-by-step explanation: 3x4= 12 -3=9

6 0

3 years ago

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