Answer:
5x<12
Step-by-step explanation:
Five times x is equally 5x fewer than is equally < # 5x<12
I think its -1 i not very smart so it probably wrong
Answer:
The area of the room and its uncertainty in square meters is:
15.642±0.040 
Step-by-step explanation:
We know the area of a rectangular room is the multiplication of the length and width:

Now we need to know the uncertainty, the uncertainty of a multiplication is:
(1)
: Area uncertainty
: Length uncertainty
: Width uncertainty
A: Area of the room
L: Length
W: Width
Clearing the uncertainty of the area:
(2)


The area of the room and its uncertainty in square meters is:
15.642±0.040 
Answer:
B
Step-by-step explanation:
x-5+3x-5+90=180 you set it up this way because you need to find what x is equal to and by adding those two equations plus 90 then setting the against 180 you can find x because all three angles in a triagnle add up to 180.
x-5+3x-5+90=180
4x-10+90=180 you combined like numbers
4x+80=180 combined like numbers
-80 -80 subtract 80 from both sides because you are trying to--- get x alone
4x=100 now to get x alone you have to divide 4 from both ---- sides
/4 /4
x=25 answer