Answer:
(3,0)
Step-by-step explanation:
2x + 2y = 6 divide thru by 2 and you get x + y = 3
Name x + y = 3 equation (1) and x - y = 3 equation (2)
Add equations (1) and (2)
(1) x+ y = 3
(2) <u> x - y = 3 </u>
2x = 6
x = 3
Substitute x = 3 into equation (1). So, 3 + y = 3
y = 0
Answer:
im pretty sure its 27.
Step-by-step explanation:
if g(x) = 20 then the new problem is 20=x-7
20=x-7 . add 7 to both sides
+7=+7 . +7 cancels out the -7
27=x . <<<answer
ok well you would set up an equation 7miles/50 mins=xmiles/75mins then you would cross multiply 7*75=50x
then you simplify 525=50x
then divide both sides by 50 and you end up with 10.5
so she would run 10.5 miles in 75 minutes
