Answer:
6
Step-by-step explanation:
4 a + 3 b
when a = 3 and b= -1.2
4 (3) + 5 (-1.2)
12 + -6
6
Answer:
320 toy cars and 25 toy trucks
Step-by-step explanation:
Answer: OPTION C.
Step-by-step explanation:
1. To solve this problem you must apply the Pythagorean Theorem, which is shown below:

Where a is the hypotenuse, and b and c are the legs of the triangle.
2. When you solve for one of the legs and substitute values, you obtain that the result is:

Answer: option A, 3x + 5
first, i rewrote it and removed the parentheses.
2x - 4 + x + 9
then, i collected the like terms.
3x + 5