1. In a week there are 7 days. So your andwer would be 21/10. The decimal is 2.1.
Answer:
Step-by-step explanation:
2x²+8=80
2x²=80-8=72
x²=72/2=36
x=±√36
x=±6
so x=6 is one solution other is x=-6
Answer:
7 m
Step-by-step explanation:
Circumference of a circle uses the formula;
Circumference = 2 × pi × radius(r)
If the circumference = 44
then we use the formula above to calculate the value of the radius,
44 = 2 × pi × r...then divide both sides by (2 × pi(3.14))
Radius = 44 ÷ ( 3.14 × 2)
;Radius = 7.01
;Radius = 7m