Answer:
1 . option b
2. option d
Step-by-step explanation:
1) Diameter = 8cm
Radius = 8/2 = 4cm
2) Diameter = 8cm
Radius = 4cm
5x+3÷4=7
5x+.75=7
-.75 -.75
5x = 6.25
divide by 5 on both sides
x= 1.25
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In solving equations, each must have vales of x and y. X is any number and Y is the output of any number. If you substitute x for a number, you can solve the equation for y.