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Natasha_Volkova [10]
2 years ago
12

Which best describes the constant difference for the

Mathematics
1 answer:
Crank2 years ago
3 0

Answer:

A (a constant first difference of 2 1/2)

Step-by-step explanation:

did on edge, option c is incorrect

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(27 points for whoever answers this ) Write an expression to represent the sum modeled in the following number line.
FinnZ [79.3K]
-3\dfrac13+\dfrac63=\dfrac{-10+6}3=-\dfrac43
4 0
3 years ago
Find 9P9 and 9C9. Why do the answers differ?​
sveta [45]

We have been given two expressions 9P9\text{ and }9C9. We are asked to find the value of each.

To find 9P9, we will use permutations formula.

^nP_r=\frac{n!}{(n-r)!}, where

P = Number of permutations,

n = The total number of objects in the set,

r = Number of objects being chosen from the set.

9P9=\frac{9!}{(9-9)!}

9P9=\frac{9\cdot 8\cdot 7\cdot 6\cdot 5\cdot 4\cdot 3\cdot 2\cdot 1}{(0)!}

9P9=\frac{362880}{1}                   Using 0!=1

9P9=362880

To find 9C9, we will use combinations formula.

^nC_r=\frac{n!}{r!(n-r)!}, where

C = Number of combinations,

n = The total number of objects in the set,

r = Number of objects being chosen from the set.

9C9=\frac{9!}{9!(9-9)!}

9C9=\frac{9!}{9!(0)!}

9C9=\frac{9!}{9!\cdot 1}     Using 0!=1

Cancelling out 9!, we will get:

9C9=\frac{1}{1}

9C9=1

The answers differ because order. With permutations we care about the order of the elements, while with combinations we don't.  

3 0
3 years ago
The table below shows the total sales by a computer salesman during a three-year period. year 1. $5,000. year 2. $8,500 year 3.
Anastasy [175]

Answer:

3000

Step-by-step explanation:

1312.50+625+1062.5=3000

5 0
3 years ago
Solve, show all four steps.
Eva8 [605]
3x-6+10x+15=35
10x+3x=35-15+6
13x=26
x=2
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3 years ago
What is the slope of the line?
KIM [24]

Answer:

Slope = -\frac{1}{3}

Step-by-step explanation:

6 0
3 years ago
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