Answer:
Step-by-step explanation:
Answer:
both are right
Step-by-step explanation:
okay so you already know that the y-intercept is 4 since a point is (0, 4)
but not to find the slope you can use the y2-y1/x2-x1
16 - 4/ -8 - 0 = 12/-8 = 3/-2
or
4 - 16/ 0 - (-8) = -12/8 = -3/2
it doesnt matter which you plug in first
so we know the slope (m) is -3/2 and the y-intercept (b) is 4, now to put it into an equation:
y = mx + b
y = -3/2x + 4
also im going to put this in slope-intercept form
3x + 2y = 8
-3x -3x
2y = -3x + 8
/2 /2
y = -3/2x + 4
y = -3/2x + 4 = y = -3/2x + 4
so both answers equal each other, meaning they both are right
Step-by-step explanation:
there are four dogs because each dog at a corner will see the other three dogs at the other corners
x = number of 1-cent stamps
y = number of 8-cent stamps
z = number of 12-cent stamps
We have 31 stamps all together, so x+y+z = 31.
"I have 4 more 1-cent stamps than 8-cent stamps" means we have the equation x = y+8. Whatever y is, add 8 to it to get x. Solve for y to get y = x-8.
You also have "twice as many one cent stamps as 12 cent stamps", so x = 2z. Solving for z gets you z = 0.5x
-------------
x+y+z = 31
x+x-8+z = 31 ... y replaced with x-8
x+x-8+0.5x = 31 ... plug in z = 0.5x
2.5x-8 = 31
2.5x = 31+8
2.5x = 39
x = 39/2.5
x = 15.6
Your teacher made a typo somewhere because we should get a positive whole number result for x (since x is a count of how many 1-cent stamps we have).
Taking 6:00 AM as the starting point and time in minutes from the starting point, You get to the bust stop at 76 min.
(a) Every 9 minutes, bus run from the bus stop. So the last bus was on 72 min. So you are 4 min late. Therefore you have to wait for, 9 - 4 = 5 min.
(b) As shown earlier, you arrived 76 min after the buses begin running.
(c) The first time is 9 minutes after the starting time, which is 6:09 AM.
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