Answer:
Step-by-step explanation: your goal is to keep x on one side and everything else on the other.
subtract 1 from both sides
4x = -48
divide 4 on both sides
x= -12
hope this helps :)
Answer:
sub to stabillix on yt
Step-by-step explanation:
Answer:
Brian: 22
Charlie: 88
Latoya: 14
Step-by-step explanation:
Set up an equation where b represents the number of messages Brian sent:
4b will represent Charlie because he sent 4 times more texts than Brian did
(b - 8) represents Latoya because they sent 8 less texts than Brian:
b + 4b + (b - 8) = 124
Add like terms:
6b - 8 = 124
6b = 132
b = 22
Now, we can plug in 22 as b to find Charlie and Latoya's number of texts:
4b = 4(22) = 88
b - 8 = 22 - 8 = 14
Answer:
Option B. 0.783 pounds
Step-by-step explanation:
step 1
Find the area of a a 36 inch piece of PVC pipe with an outside diameter of 0.82 inches and an inside diameter of 0.75 inches
The area of a circle is equal to
![A=\pi r^{2}](https://tex.z-dn.net/?f=A%3D%5Cpi%20r%5E%7B2%7D)
we have
![r2=0.82\ in](https://tex.z-dn.net/?f=r2%3D0.82%5C%20in)
![r1=0.75\ in](https://tex.z-dn.net/?f=r1%3D0.75%5C%20in)
assume
![\pi =3.14](https://tex.z-dn.net/?f=%5Cpi%20%3D3.14)
![A=\pi (r2^2-r1^2)](https://tex.z-dn.net/?f=A%3D%5Cpi%20%28r2%5E2-r1%5E2%29)
substitute the values
![A=(3.14)(0.82^2-0.75^2)](https://tex.z-dn.net/?f=A%3D%283.14%29%280.82%5E2-0.75%5E2%29)
![A=0.345086\ in^2](https://tex.z-dn.net/?f=A%3D0.345086%5C%20in%5E2)
step 2
Find the volume of the piece of PVC
Multiply the area by its length
![V=0.345086(36)=12.42\ in^3](https://tex.z-dn.net/?f=V%3D0.345086%2836%29%3D12.42%5C%20in%5E3)
step 3
Find the weight of the piece of PVC
Multiply the volume by its density
The density is ![0.063\frac{lb}{in^3}](https://tex.z-dn.net/?f=0.063%5Cfrac%7Blb%7D%7Bin%5E3%7D)
so
![W=12.42(0.063)=0.783\ lb](https://tex.z-dn.net/?f=W%3D12.42%280.063%29%3D0.783%5C%20lb)