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grin007 [14]
3 years ago
9

HELLO PLEASE HELP ME LAST ONE PLEASE. THANK YOU GIVE YOU A GOOD POINTS OR MARK AS BRAINLIEST

Mathematics
2 answers:
PtichkaEL [24]3 years ago
8 0

Answer:

12600 milligrams in 21 days.

Step-by-step explanation:

200 * 3 = 600 per day

21 days * 600 = 12600 milligrams in 21 days.

egoroff_w [7]3 years ago
4 0

Answer: 19 is 56

Step-by-step explanation:(4x2)x7 is 56

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A triangle has three different integer side lengths and a perimeter of 20 units. What is the max length of any one side?
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The gas mileage for a certain vehicle can be approximated by m=−0.05x2+3.5x−49, where x is the speed of the vehicle in mph. Dete
Whitepunk [10]

Answer:

<h2>14mph</h2>

Step-by-step explanation:

Given the gas mileage for a certain vehicle modeled by the equation m=−0.05x²+3.5x−49 where x is the speed of the vehicle in mph. In order to determine the speed(s) at which the car gets 9 mpg, we will substitute the value of m = 9 into the modeled equation and calculate x as shown;

m = −0.05x²+3.5x−49

when m= 9

9 = −0.05x²+3.5x−49

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0.05x²-3.5x+49 = -9

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Dividing through by 5;

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a = 1, b = 70, c = -1160

x = -70±√70²-4(1)(-1160)/2

x = -70±√4900+4640)/2

x = -70±(√4900+4640)/2

x = -70±√9540/2

x =  -70±97.7/2

x = -70+97.7/2

x = 27.7/2

x = 13.85mph

x ≈ 14 mph

Hence, the speed(s) at which the car gets 9 mpg to the nearest mph is 14mph

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3 years ago
in each diagram below, line A is parallel to line B. in which diagram does the alternate interior angle postulate justify angle
Firlakuza [10]

Answer:

Step-by-step explanation:

a

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3 years ago
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