Answer: 3x+5x and 8x, 3(x+4) and 3x+12, a+b+a and 2a+b
Step-by-step explanation:
3x+5x is equal to 8x, so they're equivalent
3(x+4) is also equal to 3x+12 when you use the distributive property
a+b+a is also equivalent 2a+b
B
Step-by-step explanation:
because the figure is based on the graphic law
Answer:
Step-by-step explanation:
From the question we are told that:
Number of boys
Number of girls 
Total Number of students
Generally the equation for Probability of Choosing a Girl is mathematically given by
Answer:
i hope its correct
Step-by-step explanation:
11x + 2y=68 ------------1
5x+y=13 ------------2
y= 13-5x. ------------3
put 3 into 1
11x +2(13-5x) =68
11x +26 -10x =68
x=42
put x =42 into 2
5(42) +y =13
210+y=13
y=13-210
y=197
