Answer:
4) 6
8) x= 4; y= 4.5
Step-by-step explanation:
4)
First lets think how to get the area of a triangle.
B*H* 1/2 = A
Next lets plug in what we already know.
12*H* 1/2= 36
Then we multiply the Base by 1/2.
12 * 1/2 = 6
( note this will not be the answer)
Then divide the Area by 6
36 / 6=6
( our answer is 6)
8)
First lets think about this.
(What can we use to find one variable?)
answer: ratio
Next lets see which numbers can we use to find the ratio.
3 and 6
Then lets put it into a ratio.( Think can we simplify)
3:6 -> 1:2 or 1/2
Finally use this ratio to find x and y
(x) 2:x -> 2:4 (multiply by 2)
(y) y:9 -> 4.5:9 (divide by 2)