-7x+y=42
y=42+7x
5x+13y=66
Substitute for y (meaning put 42+7x into the equation above instead of y because they are equal - see second line of my answer above)
5x+13[42+7x] = 66
5x +546 = 66
5x=66-546
5x=-480
x=-480/5
x=-96
Answer:
On a recent day, 8 euros were worth $11 and 40 euros were worth $55. Enter an equation of the form y = kx to show the relationship between the number of euros and the value in dollars. First solve k which is the slope so k = ( 55- 11) / ( 40 -8) = 1.375
Y= 1.375x
Step-by-step explanation:
she has 100
subtract 40 for renting the room
100-40 =60
now divide 60 by 12 to find number of people
60/12 = 5
she can invite 5 people
This questions awnser would be A because if you graph the equations (I use Desmos) you'll see that they all intersect whether it being at one point or infinite except for A which is parallel.
Answer:
196 miles
Step-by-step explanation:
A bus drives for hours at an average speed pf 56 mph. To Find: How far does the bus drive? It means distance travel by bus is 196 miles.
