Answer:
The letter "x" is often used in algebra to mean a value that is not yet known. It is called a "variable" or sometimes an "unknown".
Step-by-step explanation:
In x + 2 = 7, x is a variable, but we can work out its value if we try:)
A. What three numbers could possibly be on his uniform.
B. Probability of being a multiple of 10 and is two digits and has a 3 as a factor.
C. Frank has a 30 on his uniform. The number is a multiple of 10 and one factor of the number is 3.
Answer:
9x
Step-by-step explanation:
3y +2x-3y +7x
Combine like terms
2x+7x +3y-3y
(2+7)x +(3-3)y
9x +0y
9x
Answer:
14
Step-by-step explanation:
7/5. = x/ x- 4 (the ratio to each other is the same)
cross multiply
7x-28 = 5x
simplified: -2x = -28
divide x and -28 by -2
x= 14
x= # of girls
