Which square root would be classified as rational √2, √16. √24, √40 which one of these numbers' square root be rational

Mathematics

1 answer:

Rasek [7]3 years ago

4 0

Square root of 16 would be the only rational number since it is the only whole number.

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In the sequence s of numbers, each term after the first two terms is the sum of the two immediately preceding terms. what is the

Lina20 [59]

Sn=n/2 (2a1 +(n-1)d)

[s5= 5/2 (2a1 +(5-1)d) = 5a1+10d]

s6=3(2a1+5d) = 6a1+15d
s4=2(2a1+3d) = 4a1+6d

6a1+15d -(4a1+6d) = 5 -----(1)

s7=7/2(2a1+6d) =7a1+21d

6a1+15d + 7a1+21d = 21 -----(2)

(1) 2a1+9d=5 -----(3)
(2) 13a1+36d=21 ----(4)

(3)*4 ; 8a1+36d=20 ----(5)
(4)-(5) 5a1 = 1
so a1 = 1/5

(3) 2a1+9d=5
2(1/5)+9d = 5
9d = 5-2/5 =23/5
d = 23/45

so [s5= 5/2 (2a1 +(5-1)d) = 5a1+10d = 5(1/5) + 10(23/45) = 1 + 5.11 = 6.11 ]

i'm not sure about the answer but the process is correct

6 0

3 years ago

The volume of a cylinder is 384pi cm cubed. The radius of the base of the cylinder is 4 cm. What is the height of the cylinder?

marissa [1.9K]

Answer:

24cm

Step-by-step explanation:

pi(4^2) = 50.26548246

This is the area of the circle

384pi / area of circle = 24cm

7 0

4 years ago