Answer:
Equation 3
Step-by-step explanation:
An identity is, simply put, an equation that is always true. 1 = 1, 2 = 2, and x = x are all examples of identities, as there's no case in which 1 ≠ 1, 2 ≠ 2, and x ≠ x. Essentially, if we can manipulate and equation so that we end up with the same value on either side, we've found an identity. Let's run through and try to solve each of these equations to see which one fulfills that condition:
8 - (6v + 7) = -6v - 1
8 - 6v - 7 = -6v - 1
1 - 6v = -6v - 1
1 = -1
This is clearly untrue. Moving on to the next equation:
5y + 5 = 5y - 6
5 = -6
Untrue again. Solving the third:
3w + 8 - w = 4w - 2(w - 4)
2w + 8 = 4w - 2w + 8
2w + 8 = 2w + 8
If we created a new variable z = 2w + 8, we could rewrite this equation as
z = z, <em>which is always true</em>. We can stop here, as we've now found that equation 3 is an identity.
Answer:
E=MC SQUARE²
Step-by-step explanation:
BECAUSE country's postal service will accept a package if its length plus its girth (the distance all the way around) does not exceed 78 inches. Find the dimensions (in inches) and volume (in cubic inches) of the largest package with a square base that can be mailed.
In order to do that you need to do multiplication so for the first person to be chosen there are a total of 12 people so you start with 12 in your equation
then you have 11 people left for the second person so your equation becomes 12x11
there are 10 people for the third: 12x11x10
9 for the fourth
and 8 for the fifth
so your equation becomes: 12x11x10x9x8= 95,040 different groups of 5
Answer:
14cm²
Step-by-step explanation:
3x2=6,
3x2=6,
2x1=2,
6+6+2=14 cm^2
Step-by-step explanation:
Answer
(z+15)
Use the quadratic formula to get the answer you seek.
You should arrive at
(z-6)(z+15)