Answer:
21 cm squared
Step-by-step explanation:
The area of a triangle is base times height divided by 2, or
a = base time height/2
The base here is 7cm and the height is 6cm.
7 times 6 is 42.
42 divided by 2 is 21
1 inch of the model - 18 inches of the car
9 inches of the model - x inches of the car

The car is 162 inches long.
Hi there,
Your question is "twice a number (x) is fifty"
Recall how a number is represented by x.
Twice a number would be represented as 2x.
Therefore, to represent that twice a number is equal to 50, that would result in the expression: 
If you're looking to solve this equation, it's often best to think about the "reverse" of the current equation.
Notice how 2 is multiplying the x.
To isolate x, divide that side by 2.
However, recall that whatever is done to one side of an equation must also be done to the other side of the equation. Therefore, you will need to divide both sides by 2.



Equation: 
Solving for x: 25
Hope that helps!
Answer: D) 0.78
Step-by-step explanation:
Add all the given probabilities to find the answer:
45/100 + 18/100 + 15/100 = 78/100 = 78% or 0.78