Answer:

Step-by-step explanation:
Lets think about multiplication. What times 5 equals 20? (5x = 20)
It would be 4! (5 x 4 = 20)
So take the 4 and multiply it by the fraction.

Theres your answer :)
Density = 0.8 g/cm³
Volume = 9000 cm³
D = m / V
0.8 = m / 9000
m = 0.8 x 9000
m = 7200 g
hope this helps!
The slope is 2 because remember, y= mx+b
m= slope
the slope is always multiplied by x
Answer:
The gradient is 3/7 make y the subject. Then put the coordinates in the equation.
Step-by-step explanation:
Letter D
1-sin^2(x) = cos^2(x)
= sin^2(x)/cos^2(x)
= tan^2(x)