Answer:
3x-y= 27
Step-by-step explanation:
9x-3y=27
1/3(9x-3y=81)
hence 3x-y=27
Answer:
4900 Litres
Step-by-step explanation:
First we need a common demoninator:
3/7=15/35
Then we subtract the two to figure out how much 420 Litres is:
15/35-12/35=3/35
3/35=420 litres
Divide amount by the numerater for thow much 1/x is.
1/35=140
and multiply by the denomenator to get a full number on your fraction, and therefore a full tank.
140 x 35 = 4900
Answer:
Ratio as a fraction in simplest form is,
Step-by-step explanation:
Ratio defined as the relationship between the quantities of something i.e,
a: b = 
Given: 51 correct : 9 incorrect
By definition of ratio:
51 correct : 9 incorrect = 
Divide both numerator and denominator by 3 we get;

then
The ratio as a fraction in simplest form is, 17 correct : 3 incorrect or 
Answer:
a translation up or down changes the y value of a coordinate
Step-by-step explanation:
The rule is, the numbers are each going up by 2/6's
E.g. 1/6 , 3/6 (= 1/2), 5/6 , the missing number is, 1 whole and 1/6