Gruop x terms
(x²-8x)+3=0
take 1/2 of linear coefient and square it
-8/2=-4, (-4)^2=16
add negative and positive inside
(x²-8x+16-16)+3=0
factor perfect square
((x-4)²-16)+3=0
expand
(x-4)²-16+3=0
(x-4)²-13=0
add 13 both sides
(x-4)²=13
answer is C
Step-by-step explanation:
15% as a decimal is 0.15
40*0.15 is 6
6 guests arrive early
Answer:
10 m²
Step-by-step explanation:
There is no formula to solve this problem
Each square on the grid is 1 unit
- Just count all the squares inside the shape and that will be the area of the figure.
- I counted 6 full squares and 10 half squares which would be 5 whole squares
- Adding those numbers up I have 6 + 5 = 11 ≈10 m²
The woman will have to invest 40000 at .15 to earn 6000 a year in interest. that leaves her 40000 to invest in a cd.
I set this up...
6000/x=15/100
cross multiply giving you 600000=15x
divide 600000 by 15 for x.
40000
40000 from 80000 leaves 40000 for investing
All you have to do here is some simplifying.
6/12 = what
6 divided by 12 = 1/2
1/2 = 2/4
There! We have our missing value
6/12 = 2/4
Answer: c = 4
