The amount you need is how much you will need
Form simultaneous equations.
a + b + c = 125
b = 3c
a = c +10
Substitute them back in:
c + 10 + 3c + c = 125
Solve for c:
5c + 10 = 125
5c = 115
c = 23
a = 23 + 10 = 33
b = 3 x 23 = 69
To check:
23 + 33 + 69 = 125, Which is correct
Answer:
um what? That is a little confusing. But a cute word is:
Crummy
Step-by-step explanation:
The radii of the circle increases by 7.5 cm each ring: 7.5 cm, 15.0 cm, 22.5 cm, and 30.0 cm.
The area if the red target is the area of the largest circle minus the second to the largest circle plus the area of the third largest circle minus the area of the smaller circle
A=pi(30.0)^2 - pi(22.5)^2 + pi(15.0)^2- pi(7.5)^2
A=900pi-506.25pi+225pi-56.25pi
A=562.5pi is approximately 1767 cm^2
Answer:
100
Step-by-step explanation: