Move the 1st equation to get y by itself so it’s now y=-4x so you can substitute that in for the second equation 2y+x=-7 becomes 2(-4x)+x=-7
-8x+x=-7
-7x=-7
x=1
then plug that back in to find y
4(1)+y=0
4+y=0
y=-4
now you have x and y so your coordinate (the answer) is (1, -4) hope this helps!
Answer:
8 bags, but will have some extra.
Step-by-step explanation:
The area of the lawn is 120 square feet, and 15 x 8 =124.
Answer:
12*15 + 4*15*1.5
180+90 = $270
Step-by-step explanation:
To integrate, let's first clean out the inside, and simplify:
We can now safely substitute the value of u:
Now, we can write that:
This is much easier to integrate:
![16\int{u^4} \ du = 16[\frac{1}{5}u^5] + C](https://tex.z-dn.net/?f=16%5Cint%7Bu%5E4%7D%20%5C%20du%20%3D%2016%5B%5Cfrac%7B1%7D%7B5%7Du%5E5%5D%20%2B%20C)
Simplify:
Replace u (final answer):
Hope I could help with your integration.
