Answer:
Mary is 10 years old, and her father is 40 years old.
Step-by-step explanation:
Let Mary's age = x.
Mary's father is four times as old, so he is 4x.
Five years ago, Mary was x - 5, and her father was 7(x - 5).
Five years ago, Mary's father was 4x - 5.
7(x - 5) = 4x - 5
7x - 35 = 4x - 5
3x = 30
x = 10
4x = 4 * 10 = 40
Mary is 10 years old, and her father is 40 years old.
Answer:
x could be anything. you have to have a equation to solve for x.
Step-by-step explanation:
Answer:
option C and option D the function f(x) is increasing.
Step-by-step explanation:
" A graph is said to be increasing in an interval if it's value keeps on increasing in that particular interval ".
By looking at the graph attached in the question we could clearly see that the function f(x) is increasing in the interval (-1.6,0] and [0,0.8).
and in all the rest options asked in the question the function f(x) is decreasing.
Hence, for option C and option D the function f(x) is increasing.
Answer:Here you can enter any number with as many or as few decimal places as you want, and we will round it to the nearest one decimal place. Please enter your
Step-by-step explanation:
5,000.
Since 3 is less than 5, you round under.
Good luck!