9514 1404 393
Answer:
a. 40
b. 0
c. 50
Step-by-step explanation:
a) 46 + (-2k) for k = 3 is ...
46 + (-2(3)) = 46 -6 = 40
__
b) 46 + (-2k) for k = 23 is ...
46 + (-2(23)) = 46 -46 = 0
__
c) 46 + (-2k) for k = -2 is ...
46 + (-2(-2)) = 46 +4 = 50
Because the 18-gon is symmetrical, you can rotate it by 360/18 or 20 degrees. This is because when you rotate it by 20 degrees(to the left for explanation matters), any angle will now be in the position of its angle to its left.
2x =3 is the first one , first one is B and 2nd one is D I believe
B) 40 liters of ginger ale and 60 liters of fruit juice.
Starr drives 495 miles in 9 hours. How many miles does Starr drive in 15 hours?
Starr drives 495 miles in 9 hrs.
That's 495 miles/9 hrs
Do you remember the problem about cups and teaspoons? Mothers and pancakes?
We just divide top and bottom by the number on the bottom, so that we end uo with just one "thing" on the bottom
The number on the bottom is 9 (from 9 hrs)
If we now divide top and bottom by 9, we get
55 miles / 1 hr
i.e. Starr's speed is: 55 miles/hr
If Starr now drives for 15 hrs, she will travel 55 * 15 miles = 550 + 275 = 825 miles
Answer: Option A : 825 miles