Kieran and Ariana are biking on a trail. Kieren begins 8 miles ahead of Ariana and bikes at an average speed of 4 miles per hour
2 answers:
You might be interested in
Answer:
<h3>present age of son = 10 </h3><h3>present age of father = 40</h3>Step-by-step explanation:
Let, present age of son be 'x'
present age of father be 'y'
y = 4x→ equation ( i )
After five years,
Son's age = x + 5
father's age = y + 5
According to Question,
Put the value of y from equation ( i )
Distribute 3 through the parentheses
Move variable to L.H.S and change it's sign
Similarly, Move constant to R.H.S. and change its sign
Collect like terms
Calculate the difference
Now, put the value of X in equation ( i ) in order to find the present age of father
plug the value of X
Calculate the product
Therefore,
Present age of son = 10
present age of father = 40
Hope this helps..
Best regards!!
Answer:
<u>Part 1</u>
Set B
<u>Part 2</u>
We can use the FOIL method to multiply these expressions:
However, as all the expression are in the format , we can use the shortcut:
<u>Part 3</u>
Using the shortcut to find the products:
<u>Part 4</u>
A new example of a multiplication problem based on the structure of Set B is:
<u>Part 5</u>
An example of a multiplication problem that would NOT be included in Set B based on its structure is:
We cannot use the derived Set B shortcut (from part 2) to multiply this expression. Instead, we would have to use a different shortcut of "The Difference of Two Squares" to find the product of this example expression.