Answer:
Let
- p : this triangle has two 45 degree angles
- q : it is a right triangle
Step-by-step explanation:
Denote
- r : if this triangle has two 45 degree angles then it is a right triangle
Then, r can be written as follows
Since 
is a tautology, you get
and given that
it follows that the negation of r is
- " this triangle has two 45 degree angles and it is not a right triangle".
Then, the correct answer is C.
40 km/3 L = x km/ 50 L
40 km * 50 L = x km *3 L
2000 = 3 * x
X = 666 km
[ Answer ]
[ Explanation ]
5x + 13 = 13
Solve Equation To Figure Out Solution(s)
Subtract 13 From Both Sides:
5x + 13 - 13 = 13 - 13
Simplify:
5x = 0
Divide Both Sides By 5:
= 
Simplify:
X = 0
X = 0. This Means, There Is One Solution To This Algebraic Equation
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Hey there!
The correct answer is 30 miles per gallon.
If he can drive 270 miles on 9 gallons, we want to find the unit rate, or miles per gallon. We can do this by dividing 270 by 9. To make it easier, we will take off the zero, and do 27/9, which is 3. Now we add the 0 back on, which gives us 30. Therefore, his average mileage is 30 miles per gallon.
Have a terrificly amazing day! :D
