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Harrizon [31]
2 years ago
7

What number must be added to the expression below to complete the square? x2+x

Mathematics
1 answer:
iren2701 [21]2 years ago
4 0

Answer:

answer is 1/4

Step-by-step explanation:

proof is (x-1/2)²= x²-2*1/2*x+1/4= x²-x+1/4

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What is the percentage of 12/10
Sav [38]
120% that would be the percentage of 12/10. 

12 divided by 10 = 1.2

1.2 times 100 = 120

That is equal to 120%
8 0
2 years ago
Read 2 more answers
6( 5-8x) +12= -54
UkoKoshka [18]
<span>6( 5-8x) +12= -54 
30-48x+12=-54 this comes from distributing(multiplying) 6x5 and 6 times -8x
30+12-48x=-54 you have to add the coefficients 30+12
42-48x=-54  
-42        -42 
-----------------------
-48x=-96 divide by -48
x=2</span>
5 0
3 years ago
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Evaluate expression |3|+-19|
tankabanditka [31]

Answer:

If it suppose to be |3+-19| then the answer is 16

Step-by-step explanation:

4 0
3 years ago
Write equation to the line when m=2 and b=-1<br><br> Thanks!
vaieri [72.5K]
The equation of a line in slope intercept form is y=mx+b, which when you plug in the numbers becomes y=2x-1.
6 0
3 years ago
In a state lottery game you select six numbers from 1 to 44. the state selects six numbers at random from 1 to 44 without replac
LiRa [457]
We need to correctly choose exactly 4 out of the 6 drawn numbers.

Apply hypergeometric distribution:
a=number of correctly chosen numbers = 4
A=number of correct (drawn) numbers = 6
b=number of incorrectly chosen numbers = 2 
B=number of undrawn numbers = 44-6 = 38

Then by the hypergeometric distribution
P(a,b,A,B)
=C(A,a)C(B,b)/C(A+B,a+b)  [C(n,r)=combination of r objects taken out of n]
=C(6,4)C(38,2)/C(44,6)
=15*703/7059052
= 10545/7059052
= 0.001494 (to the nearest millionth)
Answer: probability of winning third prize is 10545/7059052=0.001494

6 0
3 years ago
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