Answer:
a) 
ways
b) 
ways
c) 
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:
Where 
a. How many different ways can four pieces be selected from the 12 colored pieces?
For this case we have:
ways
b. How many different ways can two orange pieces be selected from five orange pieces?
For this case we have:
ways
c. How many different ways can two brown pieces be selected from seven brown pieces?
For this case we have:
ways
Just divide 8.4 by 6. And you’ll get 1.4 ounces on each piece of pizza.
Answer:
71%
Step-by-step explanation:
The original price is 200. The dress was sold for 142.
Take the price of the dress divide the original price (142/200) then times 100.
Answer:
In 14 weeks, they will have the same earnings.
Step-by-step explanation:
y = 55x + 1300 -------- (1)
y = 25x + 1720 -------- (2)
(2) = (1)
55x + 1300 = 25x +1720
55x - 25x = 1720 - 1300
30x = 420
30x ÷ 30 = 420 ÷ 30
x = 14
The figure is a trapeziod
both pairs are parallel
AB slope is 4/3
BC slope is -2/7
AD slope is -2/7
(and I don't know about CD)
