See the attached picture:
Answer:
10.3
Step-by-step explanation:
3.2+6.1=9.3
-(-1) is 1
So 9.3+1=10.3
Write equations for both companies:
Company A = 80 + 0.30x
Company B = 20 + 0.50x
X = number of miles.
Set the equations to equal and solve for x:
80 + 0.30x = 20 + 0.50x
Subtract 0.30x from both sides:
80 = 20 + 0.20x
Subtract 20 from both sides:
60 = 0.20x
Divide both sides by 0.20:
x = 60 / 0.20
x = 300
The answer is 300 miles.
7x10 + 6(x+0 x
6. 7(x)* +6x? +5
7720 + 6(220)2 = 5
For this case we have the following expression:
We must rewrite it quadratically:
By definition, a quadratic equation is of the form:
Now, suppose
Rewriting the given expression with the change of variable we have:
So, we have a quadratic expression.
Returning the change we have:
ANswer:
Option B
Emma changed her statement to say that when you multiply two negative decimals and a positive decimal the answer will be positive. Is Emma’s new statement always true, sometimes true, or always false? Write two equations to support your answer.