The millers will travel 240 miles in six hours.
Answer:
(a) √25 rational
(b) √30 irrational
Step-by-step explanation:
Note : only perfect squares have rational roots
25 = 5² then 25 is a perfect square
therefore √25 = 5 is a rational number
30 cannot be written in the form a² where ‘a’ I start a natural number then 30 is not a perfect square
Therefore √30 is irrational.
Answer:
23 starfish, 7 octopi
Step-by-step explanation:
x=starfish
y=octopi
x+y=30
5x+8y=171
-5(x+y=30)
5x+8y=171
-5x-5y=-150
5x+8y=171
3y= 21
y=7
x+7=30
x=23
23 starfish, 7 octopi
Answer: 849
Step-by-step explanation:
πr^2
π x 52^2 = 8494.866535
3 SF = 849
Answer:
PQ = 28 cm
QR = 21 cm
Step-by-step explanation:
PQ = PS + SQ = 16 + 12= 28
QR = QS + SR = 12 + 9 = 21