X^2+4x+4=8
-8 -8
subtract 8 from both sides
x^2+4x-4=0
now factor using quadratic formula
ax^2+bx+c=0
x= -b +-[ (sqrt (b^2-4ac))/2a ]
x=-2(1+sqrt(2))
x= 2(sqrt(2) -1)
hope that helps, hopefully you know how to plug and chug into quadratic formula. if not you can ask for help
Answer:
<u>The number is 125 and the equation is 0.8x = 100</u>
Step-by-step explanation:
80% of x is equal to 100.
Write an equation that shows the relationship of 80%, x, and 100
80% = 0.8
0.8x = 100
x = 100/0.8
x = 125
<u>The number is 125 and the equation is 0.8x = 100</u>
Answer:
$6.96
Step-by-step explanation:
5.25% of $5.79
5.79 × 5.25/100 = $0.303975 or $0.30
15% of $5.79
5.79 × 15/100 = $0.8685 or $0.87
total
$0.29 + $0.87 + $5.79 = $6.96
9^2 - 4^2 = (9 + 4)(9 - 4)
So the polynomial identity used here is
Answer:
42.3% or 11/26
Step-by-step explanation:
IN order to calculate the percentage of people that voted for Candidate A you just need to add up the number of votes for that candidate and then multiply it by 100 and divided by the total votes.
There were 26 voters, since there were 7 that didn´t vote for anyone, so we have that 11 voted for Candidate A:

So the percentage of voters that voted for candidate A was 42.3 percent.