Answer:
-5
Step-by-step explanation:
Answer:
3Ax-6x = 15
3x(A-2)=15
If A were 2, the left side of the equation would be 0 and it wouldn't equal 15 no matter what the value of x is. So A is 2
Answer:
a) Option 2
b) 12
Step-by-step explanation:
Possible outcomes can be obtained using:
1) A tree diagram
2) The counting principle
4 options for the first trial, 3 for the second
4 × 3 = 12
Mean is average example
mean of x,y,z is (x+y+z)/3
so 6 values
mean of 28
that means that they add up to 168
median means the middle number when you arrange them
range means the distance from smallest number to largest number
an example
18,27,29,29,29,36
2(x+3)=7(3x-2)
2x+6=21x-14
