A triangle has 3 sides so, to find the perimeter times 0.75 by 3
You get 2.25
Answer:
(-1/2,-5/2)
Step-by-step explanation:
x-y = 2
x+y = -3
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Through Elimination, we can just add the system of equations. The y cancels out and gives us the single equation for x:
2x = -1
x = -1/2
Substitute -1/2 for x in either equation and you get:
(-1/2) + y = -3 Solve for y
y = -5/2
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Now the same thing with an emphasis on the same time, the only
We'll represent the distance as d and the time as t.
d= 3(t+7) because Gilda is 7 minutes late when travelling 3 mph
d= 4(t-5) because Gilda is 5 minutes early at 4 mph
d= 3t + 21
d= 4t -20
3t +21 =4t -20
41=t
d= 3(41) +21= 144
The distance is 144 miles.
