Answer:
598 books
Step-by-step explanation:
Let x be the number of books in the 3rd pile. We will have then:
1st pile: 2x + 10
2nd pile: 2x
3rd pile: x
3000 = (2x + 10) + (2x) + (x)
3000 = 5x + 10
3000 - 10 = 5x
2990 = 5x
2990/5 = x
x = 598 books in the third pile!
We can check that:
3000 = 2*598 + 10 + 2*598 + 598
3000 = 1196 + 10 + 1196 + 598
3000 = 3000 CHECK!
Answer:
r=-45
Step-by-step explanation:
<u>r/5=-9</u>
OUR GOAL: To isolate the variable "r" on one side...
1) Multiply both sides of the equation by 5 to get r on one side:
r=-9*5
2) Multiply:
r=-45
Let me know if you have any question
To find the factor a a polynomial from its roots, we are going to seat each one of the roots equal to
, and then we are going to factor backwards.
We know for our problem that one of the roots of our polynomial is -3, so lets set -3 equal to
and factor backwards:
is a factor of our polynomial.
We also know that another root of our polynomial is
, so lets set
equal to
and factor backwards:
(
is a factor of our polynomial.
We can conclude that there is no correct answer in your given choices.
Hi there!
Before we begin, let's rewrite your equation. :)
Step 1) Add 14 to both sides.
Step 2) Divide both sides by 5.
Final Answer -
Hope this helps!
Message me if you need anymore help! :D
-2xy + 5x² +4y -10x
Step-by-step explanation: