<span>12X + 19Y - 3 is the answer to your question that you have asked.</span>
Answer:
30
Step-by-step explanation:
The pattern is adding going up by 2s.
It goes like this:
+0, +2, +4, +6, +8, +10
0, 2, 6, 12, 20, 30
Hope it helps!
65%
There are only 7 numbers that don't fit this criteria. Therefore, there are 13 that do. 13/20 = .65*100 = 65%
Answer:
The tea's actual cost is $116.25
Step-by-step explanation:
* Lets revise how to find the z-score
- The rule the z-score is z = (x - μ)/σ , where
# x is the score
# μ is the mean
# σ is the standard deviation
* Lets solve the problem
- The average cost of a glass of iced tea is $1.25
- The standard deviation of it is 7 cents
- A new restaurant charges a price for iced tea that has a
z-value of -1.25
* Lets change the average cost to cent
∵ $1 = 100 cents
∴ The average cost of a glass of iced tea = 1.25 × 100 = 125 cents
∵ z = (x - μ)/σ
∵ z = -1.25
∵ μ = 125
∵ σ = 7
∴ -1.25 = (x - 125)/7 ⇒ multiply both sides by 7
∴ -8.75 = x - 125 ⇒ add 125 to both sides
∴ 116.25 = x
* The tea's actual cost is $116.25
Answer:
30 marbles.
Step-by-step explanation:
Let Fatimah,Siti and Noraini has 4x, 5x and 6x marbles.
Hence, Siti received 30 marbles.
