So represent missing number with x
x means unknown so
x+-1=+1
adding a negative means subtraction
x-1=1
you can do anything to an equation as long as you do it to both sides
add 1 to both sides
x+1-1=1+1
x+0=2
x=2
the number is 2
This is so easy convert the mixed number to an improper fraction then multiply across . I hope this helped
This question basically asks for the LCM of 3 and 5, which is 3 x 5 =15
This is the answer: 15
Check : The first rectangle had 1/3 shaded; ( one in every three parts)
So for 15 parts altogether, 5 would be shaded ( 1/3 = 5/15)
The second rectangle had 2/5 shaded ( two for every five parts)
So for 15 parts altogether, 6 would be shaded (2/5 = 6/15)
Answer:
24 g
Step-by-step explanation:
In this context*, PPT means "parts per thousand", so the weight of salt is ...
(24/1000)×(1000 g) = 24 g
_____
* PPT is often used to mean "parts per trillion". The ambiguity between thousand and trillion, as well as the fact that "trillion" means different things in different countries, has led the National Institute of Standards and Technology (NIST) to discourage the use of that abbreviation.
