In this type of questions, you just need to plug in the numbers you are given. But don't forget to put parentheses around negatives and use them wherever you want to clarify the equation.
![- ( {3}^{2}) - (3 \times {2}^{3} ) + { (- 3)}^{2} + 2 \times {2}^{3} - {( - 3)}^{2}](https://tex.z-dn.net/?f=%20-%20%28%20%7B3%7D%5E%7B2%7D%29%20%20-%20%283%20%20%5Ctimes%20%7B2%7D%5E%7B3%7D%20%29%20%20%2B%20%20%7B%20%28-%203%29%7D%5E%7B2%7D%20%20%2B%202%20%5Ctimes%20%20%7B2%7D%5E%7B3%7D%20%20-%20%20%7B%28%20-%203%29%7D%5E%7B2%7D%20)
Now let's take the exponents first:
![- 9 - (3 \times 8) + 9 + 2 \times 8 - 9](https://tex.z-dn.net/?f=%20-%209%20-%20%283%20%5Ctimes%208%29%20%2B%209%20%2B%202%20%5Ctimes%208%20-%209)
Then do multiplications:
![- 9 - 24 + 9 + 16 - 9](https://tex.z-dn.net/?f=%20-%209%20-%2024%20%2B%209%20%2B%2016%20-%209)
Then add plusses and minuses:
![25 - 42 = - 17](https://tex.z-dn.net/?f=25%20-%2042%20%3D%20%20-%2017)
So the answer is -17.
Answer:
A
Step-by-step explanation:
300 minus 15 ( times each week that passed) would equal how much she owes
I pretty sure that it is 2. hope this was helpful to you!
Answer:
-20x+27
Step-by-step explanation:
-4 times 5x = -20x
-3 rimes -4 = 12
12+15=27
-20x+27
Answer:
.90(85.00) would give the same result
Step-by-step explanation:
Rhonda is using the total cost of the item ($85.00) multiplied by the discount (10%) to find the total discount: 85 x 0.10 = 8.50. Once Rhonda subtracts the discount ($8.50) from the total: $85 - $8.50 = $76.50. The other way to look at the problem, is that Rhonda is only paying for 90% of the total cost of the items, instead of 100% since she is receiving the 10% discount. So, she would get the same final total by multiplying the cost of the items ($85.00) by 90%, or 0.90.