Answer:
73
Step-by-step explanation:
(7.7 * 2) + (9.6 * 6) = 74
Answer:
You got your negatives messed up. The answer was -5y-4x
Step-by-step explanation:
Expression: -8y + 5x + 3y -9x
Your objective: Simplify the expression
The First step, Combine like terms meaning -8y+3y and -9x+5x
Solve, -8y+3y
That would equal -5y
Next solve -9x + 5x
That would equal -4x
Write your expression in simplest form:
-5y-4x
What you did:
You combined like terms but didn't follow the negative rules
Remember: Positive and Negative = Negative
Negative and Negative = Positive
For example -8y + 3y
You chose to add -8 and 3 which you got -11
What you were supposed to do was to subtract.
A helpful trick: Since they are like terms you could rearrange the questions like this 3y-8y+5x-9x, You can see that you have to do subtraction left to right
3y-8y= -5y
5x-9x= -4x
Solution: -5x-4x
Answer:
3168
Step-by-step explanation:
Here, we have s combination problem as we are selecting. The question is quite straightforward.
What the director needs to do is simply select 10 males from the total 15 males and also select 8 females from the total 11 females and add the results.
To select 10 from 15, we simply compute as 15C10 which equals 3003 ways
To select 8 from 11, we simply compute 11C8 which equals 165 ways
We simply add both to get the numbers of possible casts which is 3003 + 165 = 3168 possibilities