Answer:
3/2
Step-by-step explanation:
Mean = Sum of all values/ total no of values
There are four numbers .
Mean =
5+2=7
Multiply each side by 3.
7(9x + 3) = 30
Expand the brackets
63x + 21 = 30
Subtract both sides by 21
63x = 9
Divide both sides by 63
X = 1/7
( always sub answers back in to question to make sure it’s right )
Answer:
Cross Multiply
Step-by-step explanation:
1. Multiply 16 by 9 and you get 144
2. Multiply 5 by x
This is called cross multiplying.
3. Set up the equation. 5x=144
144/5=28.8
x=28.8
Answer:
(1,9)
Step-by-step explanation:
For a function, each x value has only one y value. 2, 3, and 4 are already used up.
(1,9)