“Extraneous solutions are not solutions at all. They arise from outside the problem, from the method of solution. They are extraneous because they are not solutions of the original problem. ... To tell if a "solution" is extraneous you need to go back to the original problem and check to see if it is actually a solution.”
Basically, they are an answer you get when you solve a problem, but they don’t actually make the equation true so you disregard it.
Answer:
42.5
Step-by-step explanation:
Is this from khan? Meh, anyways, we need to find the area of the missing sides first.
The formula for area of a triangle is:
1/2(b×h)
So we multiply two and two and you get four. 2×2=4
Then you divide and that would be two. 4÷2=2
For the next one, you do the same.
You multiply five and two, which gives you ten. 5×2=10
Then you divide by two, which gives you five. 10÷2=5
Then you add the missing area lengths together to get a total of seven.
Then you would find the entire area. By that, I mean the whole thing.
I'm not sure if you noticed but the height of the missing triangle on the left is two.
2+3.5=5.5.
So that means that we have found out the entire height.
5.5×9=49.5
But that's not the answer. That's because the shape most certainly not a whole shape. It has some missing parts, if you see what I mean.
So that means that you have to subtract the area missing from the total area. That would be....
49.5 - 7 = 42.5
total missing actual
area area area
Answer:
The answer to #7 is -4
Step-by-step explanation:
-2(x-3y)
-2( (-4) - 3(-2) )
-2 (-4+6)
-2(2)
-4
You would do... 7*-1*3 (* is times) And that is -21.
So y = -21
Answer=About 355milliliters
1fluid oz=29.6 milliliters
12fluid oz=29.6*12
12fluid oz=355.2milliliters
So about 355 milliliters
