Answer:
4
Step-by-step explanation:
2|-3+1|
First, solve what is inside the absolute value.
-3+1 = -2
Because it's absolute value, we make this value positive.
|-2| = 2
Then, multiply
2 * 2 = 4
You know that
.. (a +b)^2 = a^2 +b^2 +2ab
If these are square roots, then you have
.. (√a +√b)^2 = a +b +2√(ab)
.. (√a -√b)^2 = a +b -2√(ab)
In each case, you can put the inner radical in the form 2√something, then look for two factors of "something" that add to the other constant.
The result is then √factor1 ±√factor2, with the sign matching that under the original radical.
1. 1 +√5
2. 2 +√2
3. √3 +√7
4. √5 -√2 . . . . . . . . Technically, √(x^2) = |x|. By expressing the result as a positive number (smaller subtracted from larger), we don't have to worry about absolute value.
5. See 3 and 4. √7 -√3
6. √20 = 2√5. See 1 and 4.
.. √5 -1
7. 2 -√3
8. 4√3 = 2√12 = 2√(6*2)
.. √6 +√2
9. 6√3 = 2√(9*3)
.. 3 -√3
10. 8√3 = 2√(16*3)
.. 4 +√3
Answer:
7/8= 0.875
7/20= 0.35
18/20= 0.9
7/8= 0.875
68/50= 1.36
25/20= 1.25
26/25= 1.04
11/10= 1.10
11/16= 0.6875
9/16= 0.5625
33/40= 0.825
23/40= 0.575
14/10= 1.4
29/25= 1.16
39/40= 0.975
Step-by-step explanation:
Answer:
The constant cost of dog food is $1.59 per pound.
Step-by-step explanation:
Divide each pound by the cost and you get $1.59