Answer:
x= -2-√11. or. x= -2 + √11
Step-by-step explanation:
solving quadratic equation by completing the square
x^2+4x-7=0
x^2+4x=7
x^2+4x + (4/2)^2=7 + (4/2)^2 ( adding (1/2 coefficient of x)^2 on both sides
x^2+4x + 4=7 + 4
x^2+4x + 4=11. factorize(x^2+4x + 4) into (x + 2)^2
(x + 2)^2=11
√(x + 2)^2= + - √11
x + 2 = + - √11
there are two different solution .
x + 2 = -√11. or x + 2 = + √11.
x= -2-√11. or. x= -2 + √11.
Answer:
52 bags.
Step-by-step explanation:
Your question is how many full bags are available in terms of 38 gram packs from less than 2000 grams sum.
Now:
<u>2000</u>
38
=
52.63
Since you only need full (38 grams) paks, your answer is 52 bags.
What is the leftover amount?
L
=
2000
−
(
52
×
38
)
=
2000
−
1976
=
24
grams.
Your leftover part is 24 grams.
15% of 18 .
so. 18×15)÷100= 2.7
18-2.7= 15.3
now 6% of 15.3.
so 6×15.3)÷100=0.918 or 0.92
15.3+0.92=16 .22
answer is 16.22$
The prefix centi- means 10-2
:)
Its B just without the ^