A) the price of the pencil and the price of the pen are both unknown variables in this equation. This means that you can make the pencil = x and the pen = y. The pencil is 25 cents more than the pen, so y (the pen) + 25 cents = x (the pencil). Hence, x = y + 25.
b) Using the same logic as the last question, let’s make Bob = x and Mary = y. Bob’s age is six years less than Mary’s age, so we can express this as x (Bob’s age) = y (Mary’s age) -6, so your final answer is x = y - 6.
c) i) let the original number be x and the next odd number be y. Every other number is an odd number, so you can express this problem as y = x + 2.
ii) Using the logic from the last question, the odd number before x would be x - 2, so the expression would be y = x- 2
Hope this helped :)
Answer:
1. y = 10 - x
Step-by-step explanation:
Because he starts off with 10 dollars, and x is the amount he spends on an item, y is showing the change that he would get from paying with a 10 dollar bill, so it's what's left over from that 10 dollars.
Answer:
21 miles per gallon.
Step-by-step explanation:
273 divided by 13 is equivlent to 21
Answer:
Step-by-step explanation:
If the mean of 15 students is 71.5, then total score = 15 X 71.5 = 1072.5
The median score is 62, meaning that, the combined score of two students = 62 X 2 = 124
The difference of 1072.5 and 124 = 948.5, this represents the total score of 13 other students
∴ The mean score of 13 students = 948.5/13 = 73
In conclusion, it was only very few students that took the exam and majority of other students absconded from the exam. Majority of students scored averagely above 70.
Answer:
53 Pages a Day
Step-by-step explanation:
25% as a decimal is .25
212*.25=53 pages per day