1) The ratio of used books to all books is 6:14
2) The ratio of used books to new books is 6:8
Answer:
90°, 270°
Step-by-step explanation:
2r sin(Ф/2) = c
2r sin (Ф/2) = √2r
divide both sides by 2r
sin (Ф/2) = √2r/2r
sin(Ф/2) = √2/2
From the unit circle sin is √2/2 at 45°, and 135°
so Ф/2 = 45
Ф=90°
and Ф/2 = 135
Ф= 270°
Step-by-step explanation:
12 + 16 ÷ 4 × 5 - 8
12 + 4 × 5 - 8
12 + 20 - 8
32 - 8
24
Answer:
each time the numbers are being multiplied by 10
Step-by-step explanation:
1 × 10 = 10
10 × 10 = 100
100 × 10 = 1,000
hope this helps :)
Answer:
The value of n depends on the questin. N would be a variable in an equation.
Step-by-step explanation:
For example. 2*n=6
n is the variable in the equation. Therefore, the value of n is 3. Because 2*3=6.