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pickupchik [31]
3 years ago
6

A regression model is used to forecast sales based on advertising dollars spent. The regression line is y=500+35x and the coeffi

cient of determination is .90. Which is the best statement about this forecasting model?
Mathematics
1 answer:
Nataliya [291]3 years ago
3 0

Answer:

The correlation between sales and advertising is positive.

Step-by-step explanation:

INCORRECT. For every $1 spent on advertising, sales increase by $35.

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The function f(x) has an average rate of change on the interval -2≤x≤3 of 17/5. If f(-2)=9 then which of the following is the va
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Answer:

f(3) = 26

Step-by-step explanation:

Average rate of change of a function on an interval is;

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Here, we want to find the value of f(-3)

To find the average rate of change on the given interval;

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What number should be placed in the box to help complete the division calculation? Long division setup showing an incomplete cal
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Answer:

The unknown value is being subtracted from 226 is 160

Step-by-step explanation:

Long division setup showing an incomplete calculation

  • 16 is in the divisor
  • 3426 is in the dividend
  • 2 hundreds and 1 tens is written in the quotient
  • 3200 is subtracted from 3426 to give 226
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so,

The dividend = 3426

 The divisor = 16

2 hundreds means 200 and 1 tens means 10

∵ The quotient = 200 + 10 + x

∵ Dividend = divisor × quotient

∴ (16 × 200) + (16 × 10) + (16 × x) +remainder  = 3426  

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- Divide both sides by 16

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∴ 3426 ÷ 16 = 214  

∴ From the steps above the missing number subtracted from

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The unknown value is being subtracted from 226 is 160

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Can you answer questions 71, and 72?
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