Answer:
hi
Step-by-step explanation:
x = hours
car 1 left an hour before car 2 so you have 55(x+1)
car 2 = 75x
add them together to equal miles driven:
55(x+1) + 75x = 380
55x+55 + 75x = 380
combine like terms:
130x+55 = 380
subtract 55 from each side:
130x = 325
divide both sides by 130
x = 325 /130 = 2.5
x = 2.5 hours
so 2.5 hours
Answer:
3y + 5x + 25 = 0
Step-by-step explanation:
Step 1: Find the coordinates of intersection of the two lines by solving the two equations.
4x + y = -13
3x - 4y = 14
Step 2: To eliminate y, make the coefficient equal, add if the variable have the different sign and subtract if the have the same sign.
4x + y = -13 ---(1) x 4
3x - 4y = 14 ---(2) x 1
16x + 4y = -52
3x - 4y = 14
19x = -38
x = -38/19 = -2
Step 3: Substitute x = -2 to find y.
3x - 4y = 14
3(-2) - 4y = 14
-6 - 4y = 14
-4y = 14 + 6
-4y = 20
Step 4:
Therefore, the point of intersection is (x,y) = (-2,-5)
Hence the line passes through the point (-2, -5)
Step 6: since the line that passes through (-2, -5) is parallel to 5x + 3y - 4 = 0, the slope will the equal to the slope of 5x + 3y - 4 = 0
For parallel lines
m1 = m2
5x + 3y - 4 = 0
3y = -5x + 4
m1 = -5/3
m2 = -5/3
Answer:
dave is 6 years old depending on which way you are halfling
Step-by-step explanation: the dog is 12 years and 9 months old
dave would be 6 i believe unless its going the other way then i have no clue
a decade is 10 years btw.
Answer: b=6
Step-by-step explanation:
6 is in the y intercept place so it equals 6