Answer:
x= -2, y = -3
Step-by-step explanation:
1. substitute x = 4+2y in the first equation:
simplify it :
2. isolate y in 8 + 5y = -7 --> 5y = -7 - 8 -->
3. solve for y: 5y = -15 --> y = -15/5 --> y= -3
4. solve for x: x = 4 + 2y
x = 4 + 2(-3)
x = 4 + (-6)
x = -2
Answer:
Option A.
Step-by-step explanation:
step 1
Find the volume of the sphere ( medicine ball)
The volume is equal to
we have
----> the radius is half the diameter
Convert inches to feet
Remember that
1 ft=12 in
assume
substitute
step 2
Find the weight of the ball
Multiply the volume in cubic foot by 100
Round to the nearest pound