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3 years ago

7

In how many ways you can put 2 books on 5 shelves so that

2 answers:

disa [49]3 years ago

6 0

Answer:

Picking any one of the two books there are five shelves to put it on - which makes five ways to place it and for each of those five ways there are four shelves the other book could go such that the two books are not on the same shelf. That's four ways to place a second book for each of the five ways to place the first. That's a total of 20 ways.

Step-by-step explanation:

Brainly? I only need one more to rank up!

Lostsunrise [7]3 years ago

3 0

Answer:

Step-by-step explanation:

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What is 2 times 4 by the power of 10

goblinko [34]

Answer: 1073741824 because 2x4 is 8 and 8 to the power of 10 is 1073741824

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3 years ago

Read 2 more answers

A pair of boots is 30dollars more than a pair of sandals. A pair of sandals cost s dollars each. Emily purchased 2 pairs of boot

babunello [35]

Answer: The expression representing the amount of money spent is $5x+60$ by Emily.

Step-by-step explanation:

Since we have given that

Let the cost price of per pair of sandals be 's'

Let the cost price of per pair of boots be 's+30'.

Number of pairs of boots = 2

Number of pairs of sandals = 3

Total cost would be

$2(s+30)+3s\\\\=2s+60+3s\\\\=5s+60$

Hence, the expression representing the amount of money spent is $5x+60$ by Emily.

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3 years ago

What is the 20th term of the linear sequence?<br><br>1,7,13,19,25

Nimfa-mama [501]

Answer:

115

Step-by-step explanation:

There is a common difference d between consecutive terms, that is

d = 7 - 1 = 13 - 7 = 19 - 13 = 25 - 19 = 6

This indicates the sequence is arithmetic with n th term

$a_{n}$ = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = 1 and d = 6 , thus

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3 years ago

Y = 100 (1- 1/2) ^t<br><br> decay or growth

charle [14.2K]

Answer:

Decay

Step-by-step explanation:

We are given an equation $y=100(1-0.5)^t$

We need to say about decay or growth of exponential function.

Exponential function: $y=a\cdot b^x$

Where,

a is initial value of exponential function.
b is decay or growth of function

For decay: 0<b<1

For growth: b>1

Now we rewrite the equation into this form

$y=100(1-0.5)^t$

Changes to

$y=100(0.5)^t$

Here, b=0.5 < 1

Therefore, The given function would be decay.

Thus, $y=100(1-0.5)^t$ is deacy.

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3 years ago

If(2scos(pi/6) +2i sin(pi/2))^n =-64...n=??

MrRa [10]

Answer:

$(2scos(pi/6) +2i sin(pi/2))^n =-64...n=$ ?

(2scos(pi/6) +2i sin(pi/2))^n =-64...n=?

Step-by-step explanation:

$(2scos(pi/6) +2i sin(pi/2))^n =-64...n=?$

$(2scos(pi/6) +2i sin(pi/2))^n =-64...n=?$

3 0

3 years ago