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ArbitrLikvidat [17]
3 years ago
13

In how many ways can 4 books be arranged on a shelf if there are 8 books to choose from?

Mathematics
1 answer:
dsp733 years ago
8 0

Answer:

1680 ways

Step-by-step explanation:

By using the formula for permutation, which is nPr=n!/(n-r)!,

8P4=8!/(8-4)!

=8!/4!

=8×7×6×5

=1680

Or if you just want to use the multiplication rule (which is simpler).

8×7×6×5=1680

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Write the equation in slope-intercept. y - 7 = -3⁄4 (x +5)
denpristay [2]

Answer:

Step-by-step explanation: . y - 7 = -3⁄4 (x +5)

1. y = -3/4(x+5) + 7

2. y = -3/4x + -15/4 + 7

3. y = -3/4x + 13/4

4 0
3 years ago
I FAIpQLSep5JOTD IBL
frozen [14]

Answer:

8 ft i think there is't much context to go off of though

Step-by-step explanation:

7 0
3 years ago
If -3=4x+7 what is x?
velikii [3]
4x+7=-3
4x=-3-7
4x=-10
X=-10/4
X=-2.5
4 0
2 years ago
Read 2 more answers
Help pls and thank:)
I am Lyosha [343]

Answer:

y=-3x+2

Step-by-step explanation:

Slope-intercept form is given by the equation y=mx+b, where m is defined as the slope and b is defined as the y-intercept (the value on the y-axis that the line crosses). First we can determine the slope by using the slope formula.

m=(y2-y1)/(x2-x1), given two points (x1, y1) and (x2, y2). Keep in mind you can choose which point is (x1,y1) and which is (x2,y2) as long as you are consistent.

Plugging in for (-1,5) and (1,-1), you will get:

m=(-1-5)/(1-(-1))=-6/2=-3

Next, we need to find the y-intercept. For this problem, you can determine it is 2 by looking at the graph of the line. We now have both components to create the slope-intercept form.

m=-3, b=2

y=-3x+2

3 0
3 years ago
Drag the tiles to the correct boxes to complete the pairs
lubasha [3.4K]

Answer:

1.Exponent

2.Variable

3.Linear

4.Solution

Umm. there are more pairs then tiles?

Step-by-step explanation:

7 0
3 years ago
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