Answer:
We need to see the system of equations.
Step-by-step explanation:
Show us the system of equations.
Answer:
79.605
Step-by-step explanation:
sin 31° = 41/x
x = 41/sin 31°
x = 79.605
Answer:
Addition property of equality
Step-by-step explanation:
The given expression is :
We need to find the first step to solve this expression.
For this, we add 3/4 to both sides of the equation i.e.
So, we have used the addition property of equality.
Answer:
The volume of sphere is <u>1436.03 inches³</u>.
Step-by-step explanation:
Given:
The radius of sphere = 7 inches.
Now, to find the volume.
So, to get the volume we put the formula:
Taking the value of π = 3.14
Therefore, the volume of sphere is 1436.03 inches³.
-x-y=-9
-3x-2y=-28
eliminate the x first
multiply the first system of equations by 3
(3)(-x)=-3x
(3)(-y)=-3y
(3)(-9)=-27
-3x-3y=-27
-3x-2y=-28
eliminate the systems of equations by subtracting
-3x--3x-3y--2y=-27--28
-3x+3x-3y+2y=-27+28
-y=1
multiply -1 for -y=-1 to get positive y
(-y)(-1)=(1)(-1)
y=-1
substitution method by using y=-1 into one of the system of equations
-x-y=-9
-x--1=-9
-x+1=-9
move +1 to the other side
sign changes from +1 to -1
-x+1-1=-9-1
-x=-10
multiply by -1 for -x=-10 to get positive x
(-x)(-1)=(-10)(-1)
x=10
answer:
x=10, y=-1
