Answer:
Step-by-step explanation:
The answer is B because giving a chocolate bar doesn't help you in a way.
Ok
2x + y - z = 7
-2y +3z = -15
x + 2y - 5z = 17
combine 2nd 3rd
x - 2z = 2
x = 2z + 2
double first statement
4x + 2y - 2z = 14
combine with second statement
4x + z = -1
substitute 2z + 2 for x
8z + 8 + z = -1
combine like terms
9z + 8 = -1
sub 8 from both sides
9z = -9
divide both sides by 9
z = -1
substitute -1 for z in second statement
-2y - 3 = -15
add 3 to both sides
-2y = -12
divide both sides by -2
y = 6
substitute -1 for z into the fifth statement
x = -2 + 2
x = 0
Answer:
Linear
Step-by-step explanation:
Add 2
x and x
.
y
=
3
x
+
9 A linear equation is an equation of a straight line, which means that the degree of a linear equation must be 0 or 1 for each of its variables. In this case, the degree of variable y is 1 and the degree of variable x is 1
.
So the pyramid looks like the one in the picture below.
notice, the bottom of the pyramid is a square, thus is called that, and each side is 3 units long, thus
Answer:
7.5
Step-by-step explanation:
The decimal form would be 7.549... when put in a calculator. When rounded, it will be 7.5
