The restriction for this is that x ≠ 4. This is because 4 - 4 = 0, and you cannot divide by zero.
An alternative way of writing this (interval notation) is (-∞, 4)U(4, <span>∞).
Hope this helps!</span>
Answer: A
If both sides have to be balanced then h has to be 13 because 13+7=20
4/7=220/x. multiply 220 by 7 then divide by 4. x=385 square centimeters.
Answer:
sweatshirts cost $42
t-shirts cost $18
Step-by-step explanation:
9x+3y=288
x+6y=270
substitute 270-6y for x in the first problem
9(270-6y) +3y=288
2430-54y+3y=288
2430-51y=288
51y=-2142
y=42
then plug y=42 into the second equation
x+6(42)=270
x+252=270
x=18
