Answer:
Step-by-step explanation:
The solution is the coordinates of the point where the lines intersect: (3,5)
2x + y = 5
x − 2y = 10
y = 5 − 2x
x − 2(5 − 2x) = 10
x − 10 + 4x = 10
5x − 10 = 10
<em>add 10 to each side</em>
<em>5x-10+10 = 10 + 10</em>
<em>5x=20</em>
5x = 0 <em>this is the error</em>
He needs to add 10 to each side
Answer:
<h2> f(-7) = 249 </h2>
Step-by-step explanation:
To find f(-7) , substitute the value of x that's - 7 into f(x). That is for every x in f(x) replace it with - 7
We have
We have the final answer as
<h3>f( -7) = 249</h3>
Hope this helps you
Answer: -3 again
Step-by-step explanation: Sorry if it is wrong
