Y = 3x + 3 this is equation 1
y = x -1 this is equation 2
since equation 1 and 2 already defined y in terms of x, we're just gonna substitute y into the other equation. as 2 is shorter I'm going with that today
x - 1 = 3x +3
-1 - 3 = 3x - x
-4 = 2x
x = -2
now we've got x just sub it in equation 2
y = -2 -1
y = -3
so the answer is (-2,-3)
Answer:
8/9 is greater than 5/6
Step-by-step explanation:
Steps for comparing fractions
Find the least common denominator or LCM of the two denominators:
LCM of 9 and 6 is 18
For the 1st fraction, since 9 × 2 = 18,
8
/9 =
8 × 2
= 16
9 × 2 = 18
Likewise, for the 2nd fraction, since 6 × 3 = 18,
5
/6 = 5 × 3
6 × 3 = 15
/18
Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
16
/18 > 15
/18 or 8
/9 > 5
/6
Answer:
$45
Step-by-step explanation:
Let the regular price be x
according to the question
the equation is
x×85/100=38.25
x×85/100=38.25
x=38.25×100/85
x=38.25×20/17
x=45
Answer:
About 16 miles
The equation:
.75x+3.95
At 16 miles Katie will have spent $15.95.
