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gizmo_the_mogwai [7]
3 years ago
6

The equation p = 1.95t² + 12.25t + 125 approximates the average sale price p of a house (in thousands of dollars) for years t si

nce 2010.
What is the best estimate for the price of the house in year 2021?
Mathematics
2 answers:
Alborosie3 years ago
6 0

Resolving   p = 1.95t² + 12.25t + 125

<span>year=2010   </span>for t=0

<span>year=2021   </span>for t<span>=(2021-2010)=11  </span>

We have that

p = 1.95*(11) ^² + 12.25*(11) + 125

p =495.70 thousands of dollars

p =495700<span>  dollars </span>

<span>is the best estimate for the price of the house in year 2021</span>
Sati [7]3 years ago
4 0

Answer: $495,700

Step-by-step explanation:

Given: The equation p=1.95t^2+12.25t+125 approximates the average sale price p of a house (in thousands of dollars) for years t since 2010.

In 2021,  t=2021-2010=11

To find the best estimate for the price of the house in year 2021, we need to substitute t=11 in the given equation we get,

p=1.95(11)^2+12.25(11)+125\\\Rightarrow\ p=495.7

Hence, the best estimate for the price of the house in year 2021 is $495,700.

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A rectangular yard has area 96 square feet. If the width of the yard is 4 ft less than length, what is the perimeter,in feet, of
marusya05 [52]
Area of the rectangular yard = 96 square feet
Let us assume the length of the yard = x feet
Width of the yard = x - 4 feet
Then
Area of the yard = length * width
96 = x(x - 4)
96 = x^2 - 4x
x^2 - 4x - 96 = 0
x^2 - 12x + 8x - 96 = 0
x(x - 12) +8(x - 12) = 0
(x - 12)(x + 8) = 0
As the value of length cannot be negative so
x - 12 = 0
x = 12
So
Length of the yard = 12 feet
Width of the yard = x - 4 feet
                             = 12 - 4 feet
                             = 8 feet
Then
Perimeter of the yard = 2 (length + width)
                                   = 2(12 + 8)
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So the perimeter of the yard  is 40 feet.
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3 years ago
Subtract (4x^2 + x + 8) - (2x^2 + 3x - 1)
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Step-by-step explanation:

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Answer:

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Answer:

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Step-by-step explanation:

This can be modeled as a binomial random variable with n=8 and p=0.4.

The probability that k individuals in the sample have Type A blood can be calculated as:

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Then, we can calculate the probability that more than 8/2=4 have Type A blood as:

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Hope it helps
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