Let a and b represent the number of pounds of type A and B coffees.
a+b=176 subtract b from both sides
a=176-b and we are also told:
5.4a+4.3b=842.6, using a found above, this equation becomes:
5.4(176-b)+4.3b=842.6
950.4-5.4b+4.3b=842.6 combine like terms on left side
950.4-1.1b=842.6 subtract 950.4 from both sides
-1.1b=-107.8 divide both sides by -1.1
b=98
So Scott used 98 pounds of type B coffee.
Answer: After 5 seconds, there will be 12 gallons of water in the bucket or in 12 seconds there will be 5 gallons of water in the bucket. Either one of them
Step-by-step explanation:
Answer:
8,7,11,7.5,10000 any number that is 7, or bigger!
Step-by-step explanation:
You have to use substitution:
You already know what y is in terms of z so put it into the other equation
3(15-2z)=3 -4z
45-6z=3-4z
42=2z
21=z
Answer:
81 / 1024
Step-by-step explanation:
Given that :
Wheel is divided into 4:
Hence, probability of winning either 10%, 20%, 30% or 50% = 1/4
Probability of winning 50% discount = 1/4
Probability of not winning 50% discount :
1 - 1/4 = (4 - 1) /4 = 3/4
Hence, probability that 50% is won by 5th customer :
(3/4) * (3/4) * (3/4) * (3/4) * (1/4)
= (3/4)^4 * (1/4)
= (81 /256) *(1/4)
= 81 / 1024