What is the value of x in the solutions to following equations
x - y + -3
x + 3y =5
subtract the second equation from the first.
-y-3y=-3-5
-4y=-8
y=2, put that back in the first equation, and solve for x
the first set of equations instead of a plus sign its supposed to be an equal sign.. and btw is it
x=-1
yes, you have it.
thx so much
Heidi is preparing for the national gymnastics competition. The table below shows the number of hours Heidi spent preparing for a gymnatics competition over a period of five months:
Month
1
2
3
4
5
Hours
2
3.5
5
6.5
8
Did Heidi increase the number of hours of practice linearly or exponentially?
Linearly, because the table shows an equal increase in hours for an equal increase in months
Exponentially, because the table shows an equal increase in hours for an equal increase in months
Linearly, because the table shows that hours increase by an equal factor for an equal increase in months
Exponentially, because the table shows that hours increase by an equal factor for an equal increase in months
is it a
yea
To find the value of x in the solutions to the given equations, we can use the method of substitution.
First, let's rearrange the first equation to solve for x:
x - y = -3
Now, we can substitute this value of x in the second equation:
(x - y) + 3y = 5
Simplifying the equation, we get:
x + 2y = 5
Now, we have a system of two equations:
x + 2y = 5 (1)
x + 3y = 5 (2)
To solve this system, we can subtract equation (1) from equation (2) to eliminate x:
(x + 3y) - (x + 2y) = 5 - 5
Simplifying the equation, we get:
y = 0
Now, substitute this value of y back into either equation (1) or (2) to solve for x. Let's use equation (1):
x + 2(0) = 5
Simplifying the equation, we get:
x = 5
Therefore, the value of x in the solutions to the given equations is x = 5.