Answer:
Hey there!
1 1/4 is a rational number because it can be expressed as a fraction.
Let me know if this helps :)
Answer:
Step-by-step explanation:
30 ≤ 23 + x
7 ≤ x
Answer:
k=2
Problem:
if the equation x^2 +(k+2)x+2k=0 has equal roots,then the value of k is ..
Step-by-step explanation:
Since the coefficient of x^2 is 1, we can use this identity to aid us: x^2+bx+(b/2)^2=(x+b/2)^2.
So we want the following:
[(k+2)/2]^2=2k
Apply the power on the left:
(k+2)^2/4=2k
Multiply both sides by 4:
(k+2)^2=8k
Expand left side:
k^2+4k+4=8k *I used identity (x+c)^2=x^2+2xc+c^2
Subtract 8k on both sides:
k^2-4k+4=0
Factor using the identity mentioned a couple lines above:
(k-2)^2=0
Since zero squared is zero, we want k-2=0.
Adding both sides by 2 gives k=2.
The answer is 10
10:8
10+ 2= 12 minutes
(follow same reasoning for 8)
8+2=10
=10
Answer:
Step-by-step explanation:
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