Answer:
A
Step-by-step explanation:
Answer: A
Step-by-step explanation:
The line 'd' separates the square into two triangles. Since the side lengths are equal, the angle is 45°. We need the line separating the two 90° angles, that I am going to define as 'z'. We can use the sine function.

z = 5
To solve for x, we can use sine again but for the 30 degree angle.

Answer:
x=-2, y=-4. (-2, -4).
Step-by-step explanation:
x=3y+10
x=y+2
----------
3y+10=y+2
3y-y=2-10
2y=-8
y=-8/2
y=-4
x=-4+2=-2
Step-by-step explanation:
for 1 book=480
for 4 books= 480×4
=1920
Answer:
6.6 stones
Step-by-step explanation:
1kg=2.2 pounds=>42kg=2.2*42poumds=92.4pounds
1stone=14pounds=>92.4pounds=92.4÷14stones=6.6stones