Answer:
The value of x = 7
Step-by-step explanation:
Given the right triangle
- We know that the sum of angles of a triangle is 180°.
so
Right angle + α + β = 180°
90° + 4x+7 + 8x-1 = 180
Group like terms

Add similar elements: :4x+8x=12x



Divide both sides by 12


Therefore, the value of x = 7
Answer:
f (-3) = 45
Step-by-step explanation:
f (x) =

f (-3) =

=》

=》

Answer:
₹996
Step-by-step explanation:
Area painted = area of wall - area of wall posture
Area of a rectangle = length x breadth
= 10.5m x 8.5m = 89.25m^2
Area of a square
length x length
2.5m x 2.5m = 6.25m^2
Area painted = 89.25m^2 - 6.25m^2 = 83m^2
Total cost of area painted = 83m^2 x 12 = 996
I’m pretty sure that the answer is D
Sqrt14 = 3.74165
smallest integer above = 4