(48-7)x(56+19)
First of all you need to work out the brackets.
48-7=41
56+19=75
This turns the question to: 41x75
When multiply decimals you can split the numbers up into the tens and units.
40x70=2800
40x5=200
1x70=70
1x5=5
2800+200+70+5= 3075
This answer would be 3075.
(-2,-2)
Since it has a negative in front of the absolute value, the graph is a downward cone.
non proportional if 25 then 10 for the same duration of time.
Answer:
x is in the range [-1,4]
Step-by-step explanation:
I haven't worked with absolute value inequalities in awhile, but let's take a wack at this.
We are given the following inequality:
| 2x - 3 | <= 5
This implies two possible cases:
[1] -5 <= 2x -3
Or
[2] 2x - 3 <= 5
So let's solve x for both of these cases:
[1] -5 <= 2x - 3
-2 <= 2x
-1 <= x
[2] 2x - 3 <= 5
2x <= 8
x <= 4
So from these cases, we can say the following is true:
x >= -1 and x <= 4
Thus, we can write this in the form
-1 <= x <= 4
Or in interval notation:
{ x is element of reals | -1 <= x <= 4}
Also written as
x is in the range [-1,4]
Where the closed brackets represent 1 and 4 as possible answers whereas parenthesis would imply they were not.
Cheers.
