Answer:
x=40 and y= 60
Step-by-step explanation:
<u>step:1</u>
Let 'x' and 'y' are two numbers
given data the sum of two numbers is 100
x+y = 100......(1)
Given difference of two numbers are
x - y = -20 ......(2)
<u>Step :2</u>
solving the equation (1) and (2)
adding the equations (1) and (2)
x+y+x-y=100-20
cancelling 'y' terms are
2 x = 80
dividing "2" on both sides, we get
x = 40
<u>Step :3</u>
substitute x = 40 in equation (1)
x + y =100
40 + y = 100
subtracting "40" on both sides, we get
40 + y - 40 = 100 -40
y = 60
Final answer:-
The two numbers are x = 40 and y= 60
Answer:
A)1,-3
Step-by-step explanation:
X+2y=5
X-3y=7
To write a determinant we take the coefficient of the variables
To get first row we take the coefficients of x and y from the equation x+2y = 5
x or 1x are same
1x+2y = 5
The coefficient of x is 1 and coefficient of y is 2
So first row is 1 , 2
We do the same for second row
To get second row we take the coefficients of x and y from the equation x-3y = 7
1x - 3y = 7
The coefficient of x is 1 and coefficient of y is -3
So second row is 1, -3
Answer: if the y-intercept is 5, it's c. -3/4x + 5. Since it's ax+b a = slope b = y intercept
Step-by-step explanation:
Answer:
I think its 245 but i'm not sure
Step-by-step explanation:
Answer:
y < -12
Step-by-step explanation:
y + 15 < 3
-15 -15
y < -12
Hope this helps!!!