Answer:
2
Step-by-step explanation:
Let's solve the given system of equations.
<u>Given system</u>
x +3y= 10 ----(1)
-2x -2y= 4 ----(2)
From (2):
-2(x +y)= 4
Dividing both sides by -2:
x +y= -2 ----(2)
Thus, options 3 and 4 are incorrect as x +y≠ -2.
(1) -(2):
(x +3y) -(x +y)= 10 -(-2)
Expand:
x +3y -x -y= 10 +2
2y= 12
Divide both sides by 2:
y= 12 ÷2
y= 6
Substitute y= 6 into (2):
x +6= -2
x= -6 -2
x= -8
Options (1) and (2) differs only by the value of the expression of -x +y. Thus, let's find its value in the given system of equations.
-x +y
= -(-8) +6
= 8 +6
= 14
Thus, option 2 is the correct option.
I don't know how it was discovered, but i do know for a fact that it is 22 divided by 7
I'm guessing here, but I may be right. The answer is x=0
If I'm wrong please correct me!!
Answer:
The main difference between a prism and a pyramid is that a prism has two bases, while the pyramid only has one.
The surface area of a prism is equal to the sum of the area of its bases and the lateral area
The total surface area of a regular pyramid is the sum of the areas of its lateral faces and its base
Answer:
Step-by-step explanation:
