Answer:
a
Step-by-step explanation:
2x-y=7
2x+7y=31 |* (-1)
===
2x - y = 7
-2x-7y=-31
===
-y-7y=-24
-8y=-24 |:(-8)
y=3
2x-y=7
2x-3=7 |+3
2x=10 |:2
x=5
x=5
y=3
Answer: 2.94 ft²
Step-by-step explanation:
Observe the figure attached:
The line LM divide the triangle into two right triangles.
Find the heigh "h" as following:
Apply the formula for calculte the area of a triangle:
Where B (B=3.4 ft) is the base and h is the height (h=1.73ft)
Then:
Answer:
61
Step-by-step explanation:
Answer:
0.1
Step-by-step explanation:
r = y/x
r = 1.4 / 14 = 0.1