Answer:
a. 7 and 4
b. 28
Step-by-step explanation:
7 minus 4 is 3
7 plus 4 is 11
7 times 4 is 28
A, -1, -1 is your answer
6(-1) - 2(-1) = -4
-6 + 2 = -4
Answer:
Mandy will take 67.5 mins to complete the 15 km race.
Step-by-step explanation:
Given:
Mandy runs 4 km in 18 min
She plans to run in a 15 km race.
We need to find how much time required to run 15 km.
4 km =18 min
15 km = time required for 15 km race
By Using Unitary method we get,
Time required for 15 km = 
Hence time required by Mandy to complete 15 km race is 67.5 mins.
Answer:
84
Step-by-step explanation:
It is A and B I think hope it helps