R+5=3r+7
-5 -5
r=3r+2
-3r -3r
-2r=2
÷-2 ÷-2
r=-1
The answers
1)-7
2)-1.5
3) 2
The correct answer would be 1/3 cup of sugar for every 1 teaspoon of vanilla, so A.
Hope this helps :)
Answer:
The perimeter is 
Step-by-step explanation:
The perimeter of a triangle is the distance around its edges.
The given triangle has side lengths 5x + 3, 5x – 5, and 3x – 2.
The perimeter is : 
Group similar terms to get:

Combine the similar terms to get: 
Hence the perimeter in terms of x is 
Answer:
Therefore the volume of the gas is 32 cubic feet.
Step-by-step explanation:
Given that,
The volume of a gas varies directly with its temperature and inversely with the pressure.

V= Volume of the gas at constant mass
T= Temperature at constant mass
P= pressure at constant mass

.
Given that,
At constant mass, the volume of a certain gas is 15 cubic feet and a pressure of 40 pound per square inch at a temperature 300 k.
=15 cubic feet,
=40 pound per square inch and
= 300 K
,
=20 pound per square inch and
= 320k
.
Plugging all values


cubic feet
Therefore the volume of the gas is 32 cubic feet.