Answer:
in this method a variable is expressed in terms of another variable from one equation and it is substituted in remaining equation.
Step-by-step explanation:
solve:x+2y=9 and 3x-y=13.
x+ 2y=9…be the first equation
3x-y=13…be the second equation
from first equation
x=9-2y…be the third equation substituting value of x from third equation in second equation, we get
3(9-2y)-y=13
or, 27-6y-y=13
or, y=2
now,
substituting value of y in third equation, we get,
x=9-2×2
=9-4
=5
the required value of x and y are 5&2
The answer is b , 90•.35= 31.5 90-31.50 = 58.50
700-620=80 so 80 reading questions
X = number of DVDs
1 DVD costs $1.95 to rent
x DVDs cost 1.95x dollars to rent
tack on the membership fee of 4.95 and the total cost is 1.95x+4.95
set this equal to 42 and solve for x
<span>1.95x+4.95 = 42
</span>1.95x+4.95-4.95 = 42<span>-4.95
</span>1.95x = 37.05
<span>1.95x/1.95 = 37.05/1.95
</span>x = 19
So Shanti can rent 19 DVDs
Answer:
-4
Step-by-step explanation:
the coordinates are in the form (x,y) so -4 would be the x coordinate.
