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➷ 820 + 7x
2600
We need to isolate 'x' to solve the inequality
To do this, subtract 820 from both sides:
7x
1780
Divide both sides by 7:
x
254.285714
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Answer:
![\large\boxed{x^3+9x^2+27x+27=(x+3)^3=(x+3)(x+3)(x+3)}](https://tex.z-dn.net/?f=%5Clarge%5Cboxed%7Bx%5E3%2B9x%5E2%2B27x%2B27%3D%28x%2B3%29%5E3%3D%28x%2B3%29%28x%2B3%29%28x%2B3%29%7D)
Step-by-step explanation:
![\text{Use}\ (a+b)^3=a^3+3a^3b+3ab^2+b^3\\\\x^3+9x^2+27x+27=x^3+3(x^2)(3)+3(x)(3^2)+3^3=(x+3)^3](https://tex.z-dn.net/?f=%5Ctext%7BUse%7D%5C%20%28a%2Bb%29%5E3%3Da%5E3%2B3a%5E3b%2B3ab%5E2%2Bb%5E3%5C%5C%5C%5Cx%5E3%2B9x%5E2%2B27x%2B27%3Dx%5E3%2B3%28x%5E2%29%283%29%2B3%28x%29%283%5E2%29%2B3%5E3%3D%28x%2B3%29%5E3)
Eliminate (I) "all bookstores in California," because we're choosing a SAMPLE, not an entire population of stores.
Keeping this in mind, we'd not choose "Internet bookstores" unless it's clear that we're sampling these stores, not looking at all of them.
This leaves only "randomly selected children's bookstores." Even now I'm not comfortable, because this choice focuses specifically on children's stores (instead of on bookstores in general).
I think that it is a reflection, but I could be wrong...
Answer:
The correct answer is $5,29
Step-by-step explanation:
The unit price helps us determine the price for a single unit of something that has been purchased in a group.
In this case we have a package of 5 pairs of insulated gloves, which includes 5 pairs and costs 29.45.
We want to know what the unit price is, that is, how much does a single pair of gloves cost.
To determine this we simply divide the total price by the number of gloves:
29.45 / 5 = 5.29
In this way we can confirm that the unit price of a pair of insulated gloves is $ 5.29.