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iris [78.8K]
2 years ago
13

In how many ways 4 books can be chosen from 8 different books and be arranged in 4 spaces on a bookshelf? ​

Mathematics
1 answer:
Trava [24]2 years ago
5 0

Answer:

hope this helps

Step-by-step explanation:

3*2 * 1 = 24 ways . It is called arrangement or permutations, while if you need to group some objects it is called combination and there we need to consider unique groups only.

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Max got another paycheck for $476.15 on April 20th.
Rufina [12.5K]

Answer:

$182.60

Step-by-step explanation:

4 0
3 years ago
What is the value of y? ​
alexira [117]

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Answer:

  y = 8√3

Step-by-step explanation:

In the 30°-60°-90° "special" triangle, the ratio of sides lengths is ...

  1 : √3 : 2 = 8 : y : hypotenuse

In order for these ratios to be equal, we must have ...

  y = 8√3

__

If you want to solve this using your trig skills, you recognize that ...

  Tan = Opposite/Adjacent

  tan(30°) = 8/y

  y = 8/tan(30°) . . . . where tan(30°) = 1/√3

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4 0
2 years ago
Find the slope of the line (-4, -1) (1, 4)
timofeeve [1]

(y - yo) = m.(x - xo)

We have two points (-4, -1) and (1, 4)

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(-5) = m.(-5)

m = (-5)/(-5)

m = 1

So the slope is 1

7 0
3 years ago
Read 2 more answers
a taco stand sells tacos for $3.25 each. the stand's expenses for the day are $210. definec your variables and write an inequali
AlekseyPX

Okay, we know that the expenses for the day is 210.

Knowing this, and the price of the taco, we write the inequality:

3.25t > 210

t = number of tacos

Now divide both sides by 3.25:

t > 64.62 (rounded)

Because a taco stand can't sell a fraction of a taco, we know that the taco stand has to sell more than 65 tacos for a profit.

7 0
3 years ago
CIRCLE<br>10 in<br>rodius =?<br>diameter = ?​
kykrilka [37]

Answer:78.5

Step-by-step explanation:

Because the diameter is always going to be twice the radius and area equal pi which is 3.14

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3 years ago
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