Using proportion...
length of barn length of tree
-------------------------------- = --------------------------------
length of barn's shadow length of tree's shadow
20 x
---- = ---
12 8
Using cross-multiplication...
20 x 8 = 12x
160 = 12x
x = 13 1/3 or 13.3333
The tree is 13 1/3 meters long.
Answer:
y = 17, x = -12.25
Step-by-step explanation:
Elimination method is preferred.
Refer to attachment.
<em>Hope</em><em> </em><em>it</em><em> </em><em>helps</em><em>.</em>
Step-by-step explanation:

Step-by-step explanation:first of all we have to find discount amount by using the formula discount% of M.P then finding S.P using the formula M. P -S. P then finding the profit using the formula profit% of S. P and at last we have to find C. P using the formula S. P - profit.
I hope u will understand .
hawa xa explanation tei pani herea bujxa hola .
Y=mx+b
So -4=(2)(-3)+b
-4=-6+b
+6 +6
2=b
The answer would be y=2x+2