Area of circle = pi x r^2
= 22/7 x 40^2
= 5028.57
= 5030cm^2 (3 SF)
the answer is b
X is a bigger number and the difference between x and y is 7, so x-y=7. And it says that the sum of two numbers is 31 so x+y=31
Answer:
False
Step-by-step explanation:
1+16=17
14+2=16
17 does not = 16
Answer:
Step-by-step explanation:
0=4 ther is just one solution
Answer:
A 20
Step-by-step explanation:
Given
Phone Battery Life (hours)
A 20
B 25
C 10
D 18
8.45% of the battery life of each mobile phone is used in a day by a typical user
Calculating Hours of battery life in a day for each mobile
A 20
Battery life for A =
hours
B 25
Battery life for B =
hours
C 10
Battery life for C =
hours
D 18
Battery life for D =
hours
Therefor Mobile phone A 20 uses a total of 1.69 hours of battery life in a day