Final answer:
To solve -8(5a + 9) given a = 3/5, substitute 3/5 for a, simplify within parentheses to get -8(12), and multiply to find the final answer, which is -96.
Step-by-step explanation:
To solve the mathematical problem given as -8(5a + 9), when a = 3/5, we need to first substitute the value of 'a' into the expression and then simplify the expression. Here's how you can solve it step by step:
- Substitute the value of 'a': -8(5(3/5) + 9).
- Simplify inside the parentheses: -8(3 + 9).
- Add the numbers inside the parentheses: -8(12).
- Multiply -8 by 12 to get the final answer: -96.
The value of the expression -8(5a + 9) when a = 3/5 is -96