Answer:
1. x + y = 25
2. x - y = 7
3. x = 16, y = 9
Step-by-step explanation:
(x + y = 25) + (x - y = 7)
2x (the y cancels) = 32
32/2 = 16, x = 16
substitute x in either equation
16 + y = 25
y = 9
Answer:
Step-by-step explanation:
hello :
cos²θ +sin²θ = 1 and cosθ =4/5
(4/5)² + sin²θ = 1 so : sin²θ = 1 - 16/25
sin²θ = 9/25 = (3/5)²
sinθ = 3/5 or sinθ = - 3/5 because : (3/5)²= (- 3/5)²= 9/25
Answer:
Step-by-step explanation:
height of monument = 555 feet
Scale in/ft = 1 /25
So, 25 feet = 1 inch
1 feet = 1 /25 inch
555 feet = 555 /25 = 22.2 inch
It means that the height of monument is 22.2 inch on scale. As it is a decimal number so it is not a reasonable scale.
Answer:
It is a right triangle.
Step-by-step explanation:
Right triangles will always have a right angle equalling 90 degrees. The other two angles will always be 45 degrees.
Answer:
3216.9
Step-by-step explanation:
