Answer:
Step-by-step explanation:
I suggest you watch a video about completing the square if you're not sure what I'm doing.
1.
x^2+2x-3=0
(x^2+2x+1)-3-1=0
(x+1)^2-4=0
Hope this helped,
JoeLouis2
Answer: C. 120 mi.
Step-by-step explanation:
To get the answer C you take the constant rate which is 40 and multiply it by the amount of hours which is 3. Hope this helps!
The weight of the hamburger is 160g after two bites.
Each bite takes away 20% of the weight of the burger, so we'll divide the initial weight by a percentage to find the weight before the bite.
The starting weight is 160g. Because 20% of the weight was removed from a bite, we'll divide this weight by the percentage of the burger remaining after the bite:
80% of the burger is left after a bite. Convert this fraction into a decimal by dividing by 100:
Divide the initial weight by this decimal:
The weight of the burger before the second bite was 200.
We'll do the same procedure for the first bite. The initial weight is 200, and there is 80% of the burger remaining after the first bite. Because 80% is 0.8 in decimal form, divide 200 by 0.8:
The starting weight of the burger before the bites was
250 grams.
Answer:
The operation would be marked as undefined
Step-by-step explanation:
Many people don't feel comfortable using negative numbers so find the absolute values of both numbers.
|-10| = |-20| to 10 = 20
Since 10 is not equal to 20, it is undefined
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Just in case
If you meant (-10)x = (-20) Then do this:
-10x = -20
/-10 /-10 Divide by -10 do get x
A negative divided by a negative makes the answer positive.
-20/-10 = 2
x = 2
So 32=(number of boxes) times (number of books per box)
number of books per box=8
number of boxes=n
32=n times 8
so equation is
32=8n
sol divide both sides by 8
32/8=8/8n
4=1n
4=n
4 boxes