Answer:
x = 2 and y = 1
Step-by-step explanation:
4x = 5+3
4x = 8
x = 8/4
x= 2
so substitute the value of x in the second problem
-8(2) + 6y = -10
-16 + 6y = -10
6y= -10 + 16
6y= 6
y= 6/6
y = 1
Answer:
D.-50
Step-by-step explanation:
-46+-4=-50.....
Answer:
The correct answer is d. (40, 60)
Step-by-step explanation:
To start using the linear combination method, you need a variable that will cancel out. To get this, we will multiply the second equation by -20 and then add together.
x + y = 100
-1.4x - y = -116
-----------------
-0.4x = -16
x = 40
Now that we have the value of x, we plug into one of the original equations to find y.
x + y = 100
40 + y = 100
y = 60
The standard form of the equation of a circle of radius r, with (assuming centre h, k) is given as:
(X-h)^2 + (y-k)^2 = r^2
As we are required to write an equation in standard form for the circle with radius 9 centred at the origin.
Centre(h,k)=(0,0), r=9
Substituting these values into the standard form of the equation of a circle given above:
(X-0)^2 + (y-0)^2 = 9^2
X^2 + y^2 =81
The standard form is x^2 + y^2 =81
I’m pretty sure this is right
Answer:
common numerator and denomanator
Step-by-step explanation:
