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MogTaee
09.07.2019 •
Mathematics
Adoll house has 15.5 square feet downstairs and 6.25 square. feet upstairs. which of the following is the best estimate of the total area in the dollhouse? a. 9 square feet. b.21 square feet. c.78 square feet d. 90 square feet.
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Ответ:
The correct answer is : B.21 square feet.
Step-by-step explanation:
A doll house has 15.5 square feet downstairs and 6.25 square feet upstairs.
The best estimate of the total area in the dollhouse will be = combined area of both the floors.
=>
= 21.75 square feet
Therefore, the correct answer is option B = 21 square feet.
Ответ:
We know from the given zeroes that our function has the value 0 when x = 1, x = -2, and x = 2. Manipulating each equation, we can rewrite them as x - 1 = 0, x + 2 = 0, and x - 2 = 0. To construct our polynomial, we simply use all three of the expressions on the left side of the equation as factors and multiply them together, obtaining:
Notice that we can easily obtain each our three zeroes by dividing both sides by the two other factors. From here, we just need to expand the left-hand side of the equation. I'll show the work required here:
So, in standard form, our cubic polynomial would be