Answer:
x = ± 
Step-by-step explanation:
Given
5 - 2x² = - 15 ( subtract 5 from both sides )
- 2x² = - 20 ( divide both sides by - 2 )
x² = 10 ( take the square root of both sides )
x = ± 
8/9 - 2/3 = 8/9 - 6/9 = 2/9 of a pound left
She had 8/9 of a pound of birdseed to begin with. She used 2/3 of a pound of birdseed into her feeders. You have to get a common denominator, would be 9 and when you subtract what she used from what she had you get 2/9 of a pound of birdseed left.
Answer: The second answer
Step-by-step explanation:
The answer is A because if there’s at least six then it’s have to be 1/20
9514 1404 393
Answer:
1.37; see attached
Step-by-step explanation:
The steps of long division are shown in the first attachment.
My favorite way to do arithmetic of this sort is shown in the second attachment. (That is, use a calculator.)