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3 years ago

HELP< FINAL EXAMSSSSSS MATHHH

Mathematics

1 answer:

Genrish500 [490]3 years ago

5 0

Answer:

what do you need help on

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Help Please!! I don't get this.... i knowwww im dumb -w-

Evgen [1.6K]

Answer:

All I know I remember is the first one is property of division.

Step-by-step explanation:

3 0

3 years ago

2. Four pieces of candy are drawn at random from a bag containing five orange pieces and seven brown pieces.

alexandr402 [8]

Answer:

a) $12C4 = \frac{12!}{4! (12-4)!}= \frac{12!}{4! 8!}=\frac{12*11*10*9*8!}{4! 8!}= 495$ ways

b) $5C2 = \frac{5!}{2! (5-2)!}= \frac{5!}{2! 3!}=\frac{5*4*3!}{2! 3!}= 10$ ways

c) $7C2 = \frac{7!}{2! (7-2)!}= \frac{7!}{2! 5!}=\frac{7*6*5!}{2! 5!}= 21$ ways

Step-by-step explanation:

Combinatory means combination or arrangement of different elements.

If we have n total elements and we want to find in how many ways we can select x we can use this general formula:

$nCx= \frac{n!}{x! (n-x)!}$

Where $n! = n *(n-1)!$

a. How many different ways can four pieces be selected from the 12 colored pieces?

For this case we have:

$12C4 = \frac{12!}{4! (12-4)!}= \frac{12!}{4! 8!}=\frac{12*11*10*9*8!}{4! 8!}= 495$ ways

b. How many different ways can two orange pieces be selected from five orange pieces?

For this case we have:

$5C2 = \frac{5!}{2! (5-2)!}= \frac{5!}{2! 3!}=\frac{5*4*3!}{2! 3!}= 10$ ways

c. How many different ways can two brown pieces be selected from seven brown pieces?

For this case we have:

$7C2 = \frac{7!}{2! (7-2)!}= \frac{7!}{2! 5!}=\frac{7*6*5!}{2! 5!}= 21$ ways

6 0

4 years ago

jason earns 15 dollars an hour at his job he spends 40 a day create an exprssion to desribe his savings in one day where x is th

geniusboy [140]

Answer:

Let y be the total earns of jason

where x is the number of hours jason works that day

y=15x ×40

y=600x

total earns of jason y = 600x

7 0

3 years ago

The slope of the line that passes through points -2,3 and 10,3 is

Ray Of Light [21]

Answer:

i gave you the slope and if its a function

Step-by-step explanation:

it a function

Slope (m) = ΔYΔX= 0

θ = arctan( ΔY )ΔX= 0°

ΔX = 10 – -2 = 12

ΔY = 3 – 3 = 0

Distance (d) = √ΔX2 + ΔY2 = √144 = 12

Equation of the line:

y = 0x + 3

When x=0, y = 3

3 0

3 years ago

Read 2 more answers

now has a rope that is 3.6 meters long he cut the rope into two pieces one piece is 1.925 meters long how long is the other piec

Nimfa-mama [501]

1.675 meters. 3.6 - 1.925

5 0

3 years ago

Read 2 more answers