Answer:
Step-by-step explanation:
Notice that each new term in the arithmetic sequence 1, -1, -3, ... is 2 less than the previous term. Thus, the common difference is -2.
The formula for this sequence is a(n) = 1 - 2(n - 1), or a(n) = 3 - 2n
Answer:
-2
Step-by-step explanation:
-6 - (-4)
Subtracting a negative is like adding
-6 +4
-2
Answer:ANSWER: $35 + (-$7) + (-$5)
Step-by-step explanation:
Total - book $ - magazine $
Which is equal to:
Total + (-book $) + (-magazine $)
$35 + (-$7) + (-$5)
Hope this helps! :)
Answer:
Tim has 75 pencils and 25 pens
Step-by-step explanation:
To solve this create a system of equations. To do so, first create an equation for the total number of utensils that he has. Let x equal the number of pencils and y equal the number of pens.
x+ y = 100
Now make one for the comparison of the two and solve for the constant.
x = 3y
x - 3y = 0
Now to solve the system, multiply the second equation by -1 and add them together.
x + y = 100
-x + 3y = 100
-----------------
4y = 100
y = 25
Now that we have the number of pens, find the number of pencils using an equation.
x + y = 100
x + 25 = 100
x = 75
Answer:
3 and 2
Step-by-step explanation:
