If 18 * (square root of 18) = r * (square root of t) , where r and t are positive integers and r > t, which of the following could be the value of rt ?
A) 18
B) 36
C) 108
D) 162
E) 324
C, The square root of 18=(3^2)(2) then 3(sq.rt.2). So 18(3)(sq.rt.2)=54(sq.rt 2)
So (54)(2)=108
I’m Sorry but I didn’t get how you concluded with 54*2 and compared it with rhs
(18),which was the number they give,(3) came from the square root of 18. Since (3)^2(2)=18. Then you multiply (18)(3)=54 but you still have the square root of 2. 54(sqrt2). R=54 and T=2. ®(T)=108
Got it! Thnx
If t is a number greater than 1, then t 2 is how much
greater than t ?
(A) 1
(B) 2
© t
(D) t (t − 1)
(E) (t − 1)(t + 1)
Plug in. Try to post the questions exactly as they are. D is your answer if you meant to say t^2.
T=3
T^2=9
9-3=6
Plug in t on those answer choices.
Ya,its square of t . I copy- pasted it but I guess It didn’t "superscript " it
Yeah, it makes the question a little bit confusing.
If 5 cards are placed in a row such that a particular card ( The question has a diagram : 5 different types of cards and “one of them-The black card” refers to the “particular card”:I can’t show the diagram ) is never at either end , how many different arrangements are possible.
(4)(3)(2)(1)(3)=72.
I’ve mailed some doubts at your given ID . :-h :-bd :>
A bag contains only red marbles,blue marbles and yellow ones.the probability of randomly selecting a red marble from the bag is 1/4,and that of selecting a blue one is 1/6.The total no. of marbles are?
There’s multiple answers to that one. Anything that is divisible by both 6 and 4 works, so 12 and 24 are two examples.
24
Red:blue:yellow ratio is 3:2:7, so the number of marbles is a multiple of 12.
Q 1.) If a,b,c, are different positive integers and (2^a)(2^b)(2^c) =64,then (2^a)+(2^b)+(2^c)=
A)14
B)17
C)21
D)28
E)34
2^(a+b+c)=2^6
a+b+c=6
Hence, 1+2+3=6
The answer is A.
wo,this was so easy :))
(x-8)(x-k) = x^2 - 5kx + m
In the equation above,k and m are constants.If the equation is true for all values of x,what is value of m?
A) 8
B) 16
C) 24
D) 32
E) 40