Answer:
x=0.5 and y=5
Step-by-step explanation:
8x+7y=39...eqn(1)×-14
4x-14y=-68...eqn(2)×7
we now have,
-112x-98y=-546
-(28x-98y=-476)
-140x÷-140 =-70÷-140
x=0.5
to solve for y, we substitute (x=0.5) into eqn (1) or eqn 2 which ever you want...
so I'm using eqn 1.
8x+7y=39
8(0.5)+7y=39
7y=39-4
7y÷7=35÷7
y=5
therefore, x=0.5, y=5
proof: substitute both x and y values to get you the same answer as the original solutions in both equations.
we have,
8(0.5)+7(5)=39
4(0.5)-14(5)=-68
3/8 written as an decimal is <span>0.375</span>
Answer:
Step-by-step explanation:
Given:
The given expressions are.
We need to find x and y values.
Solution:
Equation 1⇒
Equation 2⇒
First solve the equation 1 for y.
--------(3)
Substitute in equation 2.
Simplify.
Add 16 both side of the equation.
Divide Numerator and denominator by 5.
Substitute x value in equation 3 and simplify.
.
Therefore, the value of and .
Answer:
Since M is the Midpoint.
M(-7,1)
A(-4,-4) N(x,y)
From Midpoint Formula
-7 = -4 + x/(2)
-14=-4+x
x=-10
1=-4+y/2
2=-4+y
y=6.
N has the points (-10,6).
Hope this helps!
