can someone plz help me with my algebra homework?
Topic: can someone plz help me with my algebra homework?
June 18, 2019 / By Annabelle Question:
these are the problems below...i just dont know what to do
a squared -a=6
thank you so much in advance!!
thank you so much everybody for explaining.... coming back from winter break is brutel when remebering algebra so thanks again!
Best Answers: can someone plz help me with my algebra homework?
Winthrop | 8 days ago
I don't know how to express this as an equation, but the last one
The backwards way to solve it is you take the squares of small numbers, 2 squared is four, that's too small. 3 squared is 9. You subtract 9-3 = 6.
4 squared is 16, 16-4= 12, so that's too much.
👍 184 | 👎 8
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Originally Answered: I need help with my algebra 1 homework please?
2l = w
2l + 2w = p
p = 42
2l + 2(2l) = 42
2l + 4l = 42
6l = 42
l = 7
w = 14
the dimensions are 14 x 7
x + (1.5x) = 850
2.5x = 850
x = 340
one friend pays 340 and the other 510
15 + 2.05g = 2.35g
15 = .30g
g = 50 gallons need to be bought in a month
3 + 5.5h = 7h
3 = 1.5h
h = 2 hours for him to catch up
These look like factoring:
For the first two, you set each equal to 0...
c in the first one is like c+0, so c+ 0 = 0. c = 0.
c+7 = 0, so c = -7
So your two answers are -7 and 0
The second you have x-9 =0 so x = 9
and 3x+5 = 0 so x = (-5/3) because you subtract 5 by both sides and then divide by 3 to get x alone.
So your two answers are 9 and -5/3
a sqaured - a = 6, you will need to move the 6 to the other side by subtracting. You need the equation to equal 0.
a squared - a -6 = 0. Now you will need to factor that into two binomials
(a-3)(a+2) = 0. now a-3 = 0 so a = 3 and a+2 = 0 so a = -2
Your two answers are 3 and -2
👍 70 | 👎 1
c(c+ 7 ) = 0
use the zero product property
either c= o or c+7 = 0
c = 0 or c = -7
use zero product property again
x -9 = 0 or 3x + 5 =0
x = 9 or 3x = -5
x = 9 or x = -5/3
a^2 - a = 6
a^2 - a - 6 = 0
(a -3)(a+2) = 0
a - 3 = 0 or a+2=0
a = 3 or a = -2
hope that helps!
👍 63 | 👎 -6
C=0 and c=-7
x-9=0 and 3x+5 =0
x=9 and 3x=-5
x=9 and x =-5/3
A squared -a =6
A squared -a -6=0
a=-2 and a=3
👍 56 | 👎 -13
you have to multiply c+7 by c so you get
depending on what the homework question is will determine what you have to do next.
#2 basically you do this:
x * 3x =3x^2
x * 5 = 5x
-9 * 3x = -27x
-9 * 5 = -45
9add liked terms and you get: 3x^2 - 22x -45
(i don't know if you have to foil it, but this is simplest form)
-a=6 finding the square of -a would be i(square sign)a =2(square sign)3
i can't make the sign here but here is a link to what it is sappost to look like. just put it where i said, and take out the x.
hope this helps
👍 49 | 👎 -20
Originally Answered: Algebra Homework Help?
I'd multiply the second equation by -2:
-2W + 2U = -120
I'd then add i) and ii) together:
W = -108
I'd then find U by inserting that value for W in any of the two equations.
Here, I'd multiply the first equation by 3 and the second by -2. I'd then do the same as I did under 1, above.
Your factoring is clearly wrong. (D + 1)(D - 6) = D^2 - 6D + D - 6 = D^2 - 5D - 6 . You seem to have a sign error somewhere.
The second factoring is correct. By inspection, one can then see that the zeroes for the equation is J = -25 and J = -1.