Answer:
$0.52 = 0.52
Step-by-step explanation:
I think so.....
Answer:
x=
−11
2
+
5
2
√5 or x=
−11
2
+
−5
2
5
Step-by-step explanation:
Answer:
B; or "a > -2"
Step-by-step explanation:
If solved by order of operations:
- divide both sides by 13
- 13 will cancel out on the left side and the when -26 will be divided by 13 the answer will be "-2"
- This leaves with the answer of "x > -2"
Hope this helps!
I can’t tell without the question
So let's say
x=number of five dollare bills
y=number of 1 dolar bills
20 bills total
x+y=20
totla is 72 monies
72=5 times x+1 times y=5x+1y=5x+y
solve
x+y=20
5x+y=72
from here you could do 2 things: go to option 1 (longer) or option 2 (shorter)
1.
x+y=20
subtract x from both sides
y=20-x
5x+y=72
subtract 5x from boths ides
y=72-5x
subsitute
y=20-x=y=72-5x
20-x=72-5x
add 5x to both sides
20+4x=72
subtract 20 from both sides
4x=52
divide both sides by 4
x=13
subsitute
x+y=20
13+y=20
subtract 13
y=7
2.
another way is when you got 5x+y=72 and x+y=20
you negative the second equaiton and add to th efirst
I know it sounds like voodo at first but it works
-(x+y=20)=-x-y=-20
add
5x+y=72
<u>-x-y=-20 +</u>
4x+0y=52
4x=52
divide both sides by 4
x=13
subsitute
x+y=20
13+y=20
subtract 13
y=7
