Answer:
f^-1(x)=x/2+1
Step-by-step explanation:
11.
Just look at the graph, and you will see that an original inequality is:
Multiply both sides by 5:Add 6 to both sides:And you will get an equivalent inequality to
.
12.
Just look at the graph, and you will see that an original inequality is:
Multiply both sides by 5:Add 4 to both sides:And you will get an equivalent inequality to
.
Answer:
Step-by-step explanation:
30
Answer:
Area of triangle = 20√2
Step-by-step explanation:
Formula:
Area of triangle = bh/2
b - base of triangle
h - height of triangle
Distance formula
d = √(x₂ - x₁)² +(y₂ - y₁)²
From the figure we can see that, the given triangle is right angled triangle.
Base = AC and Height = AB
<u>To find AB and AC</u>
A(1,3), B(4,7) and C(9, -5)
AB = √(4 - 1)² +(7 - 3)² = √(3² + 4²) = 5
AC = √(9 - 1)² +(-5 - 3)² = √(8² + -8²) = 8√2
<u>To find the are of triangle</u>
Area = bh/2 = (5* 8√2)/2 = 20√2