<span>Equation A: 4c = d − 8
</span><span>Equation B: c = 5d + 8
</span>
Multiply Equation A by -5:
Equation A: - 20c = -5d + 40
Equation (1) + (2) :
-19c = 48
Answer: <span>B. Multiply equation A by -5</span>
Answer:
z=12
Step-by-step explanation:
subtract both sides by 4:
-z/3=-4
then multiply both sides by -3:
z=12
Answer:
r≈3.95
Step-by-step explanation:
Using the formula
A=πr^2
Solving for r
r=A
π=49
π≈3.94933
Answer:
x=−21
Step-by-step explanation:
Answer:
the last one
Step-by-step explanation:
