Answer:
B
Step-by-step explanation:
First simplify the first term to get
10y^4
then multiply 10y^4 by 4 square root 6y^3
40y would be all you needed to get answer
Usually you use addition to find a sum.
Answer:
Total number of boots sold = 48 boots
Step-by-step explanation:
each pair of boot = 2 boots
total pairs of boots sold last month = 24 boots
Total number of boots sold = 48 boots
Answer:
the lines are perpendicular
Answer:
(5,-5)
Step-by-step explanation:
<u>Eliminate</u><u> </u><u>y-term</u>
![(2x + 5x) + ( - 3y + 3y) = 25 + 10 \\ 7x = 35 \\ x = \frac{35}{7} \\ x = 5](https://tex.z-dn.net/?f=%282x%20%2B%205x%29%20%2B%20%28%20-%203y%20%2B%203y%29%20%3D%2025%20%2B%2010%20%5C%5C%207x%20%3D%2035%20%5C%5C%20x%20%3D%20%20%5Cfrac%7B35%7D%7B7%7D%20%20%5C%5C%20%20x%20%3D%205)
We can eliminate x-term but for this system of equations, eliminating y-term is faster.
<u>Substitute</u><u> </u><u>x</u><u> </u><u>=</u><u> </u><u>5</u><u> </u><u>in</u><u> </u><u>any</u><u> </u><u>given</u><u> </u><u>equations</u><u>.</u>
I will choose to substitute in the first equation.
![2x - 3y = 25 \\ 2(5) - 3y = 25 \\ 10 - 3y = 25 \\ 10 - 25 = 3y \\ - 1 5 = 3y \\ 3y = - 15 \\ y = - 5](https://tex.z-dn.net/?f=2x%20-%203y%20%3D%2025%20%5C%5C%202%285%29%20-%203y%20%3D%2025%20%5C%5C%2010%20-%203y%20%3D%2025%20%5C%5C%2010%20-%2025%20%3D%203y%20%5C%5C%20%20-%201%205%20%3D%203y%20%5C%5C%203y%20%20%3D%20%20-%2015%20%5C%5C%20y%20%3D%20%20-%205)
<u>Answer</u><u> </u><u>Check</u>
Substitute both x-value and y-value in any given equations
![2x - 3y = 25 \\ 2(5) - 3( - 5) = 25 \\ 10 + 15 = 25 \\ 25 = 25](https://tex.z-dn.net/?f=2x%20-%203y%20%3D%2025%20%5C%5C%202%285%29%20-%203%28%20-%205%29%20%3D%2025%20%5C%5C%2010%20%2B%2015%20%3D%2025%20%5C%5C%2025%20%3D%2025)
The equation is true. (<em>It</em><em> </em><em>is</em><em> </em><em>better</em><em> </em><em>to</em><em> </em><em>check</em><em> </em><em>both</em><em> </em><em>the</em><em> </em><em>answer</em><em> </em><em>for</em><em> </em><em>both</em><em> </em>equation.)
Thus the answer is (5,-5)