It would be (2,1)
y=-2*2+5
y=-4+5
y=1
Area of rectangle = Length*width
A = 28 so 28 = 4 * height
height = 28/4 = 7
Answer: The boxer lose 1.8 kg in the final week to get able to compete as a flyweight.
Step-by-step explanation:
Since we have given that
Quantity of weight a boxer needs to lose in a month is given by

In 3 months, he lowers his weight from 55.5 kg to 53.8 kg.
So, Quantity of weight he lose in three months is given by

Number of kilograms the boxer lose in the final week to be able to compete as a flyweight is given by

Hence, the boxer lose 1.8 kg in the final week to get able to compete as a flyweight.
Answer:
5120
Step-by-step explanation:
divide the entire group into 10 groups where each group has a man and his wife.
number of ways of selecting 9 groups is 10C9 which equals 10 ways
the number of ways selecting 1 person from a group is 2C1 =2 .
So that means the number of ways of selecting 1 person from 9 groups is 2^9=512
number of ways to form the committee is 10*2^9=5120
The second choice is the answer