X = low-energy lamp
y = high-energy lamp
1) 4x + 5y
2) 120= 4x + 5y
Answer:
A and B
Step-by-step explanation:
It's definitely not equilateral or isosceles because none of the side lengths are equal. Therefore, it is scalene. Since all of the angles are acute, it's not obtuse or right, therefore it is acute.
Answer:
the second one
Step-by-step explanation:
trust me i've done this before
Answer:
Step-by-step explanation:
6x + 11y = 45
9x + 9y = 45
-18x - 33y = -135
18x + 18y = 90
-15y = -45
y = 3
6x + 33 = 45
6x = 12
x = 2
Answer: 2 soulutions
Step-by-step explanation: Just factor them and solve the answer would be x = 4 √3 + 8 in its exact form and x = 14.92820323... in its decimal form