Answer:
Step-by-step explanation:
8x² + 2(x²-1) = 8x² + 2*x² - 2*1
= 8x² + 2x² -2
= 10x² -2
Like terms: 8x² , 2x²
Answer: $139.23
Step-by-step explanation: Take 50% of original dress price and add price of shoes. Subtract 10% of that.
Answer:
x = 10
Step-by-step explanation:
50 = (6x - 10) rewrite it
50 = 6x - 10
+ 10 + 10 add 10 to both sides
60 = 6x you're left with 60 and 6x
60/6 = 6x/6 divide both sides by 6 to get x by itself
10 = x the answer is whatever you're left with after dividing
Answer:
See Explanation
Step-by-step explanation:
The question is incomplete, as the dimension of the dam is not given.
However, a general way of calculating volume is to calculate the base area and the multiply by height.
Take for instance,the dam has a rectangular base of 20m by 30m.
The base area will be
Area = 20m * 30m = 600m²
If the height of the water in the dam is 40m, then the volume is:
Volume = 600m² * 40m
Volume = 24000m³
Answer:
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Step-by-step explanation:
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