Answer:
after 3 half lives the amount should be reduced to 19.375g
Step-by-step explanation:
after the first half life , amount left =
155÷2
= 77.5g
2nd half life
77.5÷2
=38.75g
3rd Half life
38.75÷2
=19.375g
Answer: 36 cars and 9 motorcycles
Step-by-step explanation:
- It's given that he has x motorcycles to 4x cars
- After he bought the cars and sold the motorcycles, he had 4x+4 cars to x-4 motorcycles
- Since after this selling/buying, he has 8 times more cars than motorcycles, you can write the equation 4x+4=8(x-4)
- Once you solve you get 36 cars and 9 motorcycles
Answer:
32 = 26
d
2
= 32
Step-by-step explanation: UMU
Answer:
The total cost for Imani books is $675.
Step-by-step explanation:
Given : Imani brought books for college and paid 35% of the total cost her parents paid the remaining balance of 438.75
To find : What was the total cost for Imani books ?
Solution :
Let x be the total cost of the books.
As she paid 35% of the total cost.
i.e. 
Now, the total cost of the book is given by,
Remaining balance= 65% of total cost
i.e. 
Therefore, the total cost for Imani books is $675.
Answer:
Slope of a Line (Coordinate Geometry) Definition: The slope of a line is a number that measures its "steepness", usually denoted by the letter m. It is the change in y for a unit change in x along the line.
