For each pair (x,y) we check 5x-4y and if it's 17 we check YES otherwise NO.
(2,9) 5(2) - 4(9) = 10 - 36 = -26 NO
(-3,-8) 5(-3) - 4(-8) = -15 + 32 = 17 YES
(1,-3) 5(1) - 4(-3) = 5 + 12 = 17 YES
(-6,2) 5(-6) - 4(2) = -30 - 8 = -38 NO
Put one unit at top and other unit bottom. X for unknown
5 gallon / 20 hours = x gallons / 48 hours
Cross multiply
20x = 5*48
20x = 240
X= 12
Answer:
43
Step-by-step explanation:
2 significant figures means we keep the first 2 and round the 1 place
42.598 we round to 43 since next to the 2 is a 5 so we round up
And 43 are 2 significant figures since none of them are zero
Hopes this helps please mark brainliest