The temperature at 9 AM was 13°F, If the temperature is -2°F at 6 AM and the next three hours the temperature increases 15°F.
Step-by-step explanation:
The given is,
Temperature is -2°F at 6 AM
For the next three hours from 6 AM the temperature increases 15°F
Step:1
We need to find the temperature at 9 AM,
Let, X - Temperature at 6 AM
Y - Temperature at 9 AM
Step:2
Where,
X = -2°F
From the given, Y becomes
( during the next three hours the temperature increases 15°F )
Y = X + 15
Substitute the X value,
= (-2 + 15)
Y = 13°F
Result:
Thus the temperature at 9 AM was 13°F, If the temperature is -2°F at 6 AM and the next three hours the temperature increases 15°F.
(a-b)¹²=a¹²-12a¹¹b+...
Let a=2r and b=3s then the second term is -12(2r)¹¹(3s)=-73728r¹¹s.
The method which is best for solving the system of equations when you remove one variable by adding them is B Elimination
To answer the question, we need to know what system of equations are
<h3>What are system of equations?</h3>
System of equations are pairs of equations that contain two unknowns
<h3>Ways of solving system of equations</h3>
We have different ways of solving systems of equations which include
- Guess and Check
- Elimination
- Graphing and
- Substitution
Since we have the system of equations
3x + 2y = 4
-3x + y = 2
The method which we can use to remove one variable by adding them is the elimination method.
Adding them, we have
3x + 2y = 4
+
-3x + y = 2
3y = 6
y = 6/3
y = 2
So, the method which we can use to remove one variable by adding them is B Elimination
Learn more about system of equations here:
brainly.com/question/13729904
#SPJ1
#sol1
a1=1×4-1=3
a2=2×4-1=7
a3=3×4-1=11
a4=4×4-1=15
a5=5×5-1=19
#sol2
f(1)=1×4-1=3,
f(n+1)=f(n)+4,
so .... you know.