Answer:
Simplifying
5x + 7y = -6
Solving
5x + 7y = -6
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-7y' to each side of the equation.
5x + 7y + -7y = -6 + -7y
Combine like terms: 7y + -7y = 0
5x + 0 = -6 + -7y
5x = -6 + -7y
Divide each side by '5'.
x = -1.2 + -1.4y
Simplifying
x = -1.2 + -1.4y
__________________________________
Simplifying
4x + 7y = -9
Solving
4x + 7y = -9
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-7y' to each side of the equation.
4x + 7y + -7y = -9 + -7y
Combine like terms: 7y + -7y = 0
4x + 0 = -9 + -7y
4x = -9 + -7y
Divide each side by '4'.
x = -2.25 + -1.75y
Simplifying
x = -2.25 + -1.75y
It takes about 4 days for the temperature to decrease by 9°F.
An equation is an expression that shows the relationship between two or more variables or numbers.
Let x represent the number of days. Given that the temperature drop decreased by 1 1/2°F each day (- 1 1/2), for it to decrease by 9°F (-9):
-1 1/2 * x = -9
-1.5x = - 9
x = 4 days
It takes about 4 days for the temperature to decrease by 9°F.
Answer:
3.23
Step-by-step explanation:
Hello! And thank you for your question!
First add 5/3 to both sides:
2x = 7 + 5/3
Then simplify 7 + 5/3:
2x = 26/3
Then divide both sides by 2:
x = 26/3 over 2
After that simplify 26/3/2:
x = 26 over 3 x 2
Simplify 3 x 2:
x = 26/6
Simplify:
x = 13/3 or 4 1/3
Final Answer:
x = 13/3 or 4 1/3
Answer:
15.8 % ???
at z = 1 p=.8413
I guess the question is asking 1-.8413 = 15.8 %
Step-by-step explanation:
