For this case we have to:
n: Represents the weight of Mary in Kg.
If your sister weighs 15 kg less we have:

Where "y" represents the weight of his sister in kg.
To find how many times Mary is heavier than her sister, we must divide Mary's weight by her sister's weight.
We have then:

Answer:
Mary is
times heavier than her sister.
Answer:
Step-by-step explanation:
1 yard is equal to 3 foot
10¢= 1 foot
30¢= 1 yard
30¢ x 258 yards= $77.40
6: 1,3,2,6
7: 1,7
Factors of 6 are 1,3,2,6 because 1x6 (6x1) and 3x2. (2x3)
Factors of 7 are 1,7 because seven is a odd number so you can only multiply it by one and itself. (1x7 or 7x1)
Answer:
Step-by-step explanation:
Simplify 3 ratical- 1000
Car A: 3x + 6
Car B: 4x+8
Step-by-step explanation:
total: 7 (x+2)