Step-by-step explanation:
2(X-1)=16
2X-2=16
2X=16+2
X=18÷2
X=9
I don't understand (3×1)-(5=86)-10
I think it is wrong or sth I don't know!
<h2>
Area of rectangular board is 1920000 square millimeters</h2>
Step-by-step explanation:
A rectangular board is 1.6 meters long and 1.2 meters wide.
Here we need to find the area of the board in square millimeters.
Length = 1.6 m= 1.6 x 1000 = 1600 mm
Width = 1.2 m= 1.2 x 1000 = 1200 mm
Area = Length x Width
Area = 1600 x 1200
Area = 1920000 square millimeters
Area of rectangular board is 1920000 square millimeters
Answer:
cos (
) = 
Decimal value: −0.9238795325...
Step-by-step explanation:
Write,
cos = cos 
= −cos 
Now using half angle formula, cos(x) = 2 cos²(
) − 1, we can write cos 
= 2
cos²() − 1
This means 
+ 1 = 2 cos²()
2 cos²() = 
cos²() = 
cos() = 
Simplify,
= 
= 
Hence,
cos () = −cos () =
Answer:
4
Step-by-step explanation:
Step 1:
- 3x + 20 = 8 Equation
Step 2:
- 3x = 8 - 20 Subtract 20 on both sides
Step 3:
- 3x = - 12 Subtract
Step 4:
x = - 12 ÷ - 3 Divide
Answer:
x = 4
Hope This Helps :)
