Answer:
2nd and 3rd one
Step-by-step explanation:
i think
Convert 3 hours and 30 minutes all into minutes so that would be 210 minutes. You then have 169 miles / 210 minutes. Get the denominator to 1 minutes by dividing by 210 to the top and bottom and you'll get .080476 miles / 1 minute which is the answer.
Answer:
4 red marbles and 6 blue marbles is the correct answwer
Step-by-step explanation:
Step 1
Given;

Required; To find the center that eliminates the linear terms
Step 2



Step 3
Substitute a,d,e into the vertex form


Step 4
Completing the square for -y²+4y



Step 5
Substitute a,d,e into the vertex form

Step 6

Step 7

Hence the answer is (-3,2)