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pishuonlain [190]
2 years ago
11

The function f(x)=-4x^2+18x+16 models the predicted sales of a hat after x price increases. Use the table showing actual and pre

dicted sales to find the residuals for the model.

Mathematics
1 answer:
denpristay [2]2 years ago
7 0

Answer:

3.2 Least-Squares Regression & Residuals ... Slope - The amount of soda is predicted to increase by ... of the explanatory variable x used to obtain the line.

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How do you solve this problem
Kryger [21]

Answer:

sin(A) = \frac{21}{{29} }

cos(A)=\frac{20}{29 }

tan(A)=\frac{21}{20}

sin(C) = \frac{20}{{29} }

cos(C)=\frac{21}{29 }

tan(C)=\frac{20}{21}

Step-by-step explanation:

So first we need to make sure we know the trig identities to solve this problem.

  • sin(\alpha )=\frac{opposite}{hypotenuse}
  • cos(\alpha )=\frac{adjacent}{hypotenuse}
  • tan(\alpha )=\frac{opposite}{adjacent}

Here we only have two legs of the triangle, so we will need to use the Pythagorean Theorem a² + b² = c² to solve for the missing leg, the hypotenuse in this case.

  • Solving for the hypotenuse, c, we get c = \sqrt{a^{2} +b^{2} }
  • Here a = 20 and b = 21, so plugging in these values to the equation we get: c= \sqrt{(20)^{2}+(21)^{2}  } =\sqrt{400+441} =\sqrt{841}=29

Now we can use the trig identities to figure out the missing values for the problem

  • sin(A) = \frac{21}{{29} }
  • cos(A)=\frac{20}{29 }
  • tan(A)=\frac{21}{20}
  • sin(C) = \frac{20}{{29} }
  • cos(C)=\frac{21}{29 }
  • tan(C)=\frac{20}{21}
4 0
2 years ago
66
likoan [24]

Answer: 230cm²

Step-by-step explanation:

>We can do this by splitting the figure into 2 trapeziums.

>Additionally, you can see that both trapeziums bear the same lengths a and b. Hence, we can use this formula: \frac{1}{2} * (a+b) * (total height).

>Thus,

Area = \frac{1}{2} *(7+16)*20=230

4 0
2 years ago
Read 2 more answers
Find the quotient of x^3 + 4x^2 - x - 4 divided by x + 1
svlad2 [7]

Answer:

x^2 + 3x - 4

Step-by-step explanation:

solved using long division

4 0
3 years ago
Will mark u BRAINLIEST! Please help this is due ASAP
serious [3.7K]

Answer + Explanation:

let x be the measure of angle x

let y be the measure of angle y

\left \{ {{x + y = 180} \atop {x=24+y}} \right.

Now, solve:

plug x = 24 + y into x + y = 180

24 + y + y = 180

24 + 2y = 180

2y = 156

y = 78

Now, plug this back into the equation x = 24 + 78

x = 102

8 0
3 years ago
Read 2 more answers
Please help with this
sveticcg [70]

It should be B or C

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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