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Korolek [52]
2 years ago
7

Jessie is completing a mental rotation experiment. her reaction time will be fastest when the objects are rotated: 120 degrees.

180 degrees. 240 degrees. 60 degrees.
Mathematics
1 answer:
MatroZZZ [7]2 years ago
8 0
<span>60 degrees it will take you longer to rotate this physical object by 180 degrees than to rotate it 90 degrees. your mental image should operate the same way the physical objects operate. then it will take you longer to rotate the mental image 180 degrees then rotate it 90 degrees. the dependent variable was reaction time not accuracy.</span>
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A boat travels at constant speed. After 20 minutes the boat had traveled 2.5 miles. How long does it take the boat to reach the
schepotkina [342]

120 minutes

Step by step:

divide 20 by 2.5 to find how many minutes it takes to drive 1 mile, then multiply that by 15 miles

7 0
2 years ago
The sales manager of a company awarded a total of \$3000$3000 in bonuses to the most productive salespeople. The bonuses were aw
alisha [4.7K]

Answer:

one possible number of bonus is 9.

Step-by-step explanation:

Let, the number of $250 bonus = x and number of $750 bonus = y.

We have that bonuses are given in amounts $250 and $750.

Since, the total bonus is $3000.

So, we get,

250x + 750y = 3000.

As, there is atleast one $250 bonus and atleast one $750 bonus.

Let, the minimum number of bonus of $750 be 1 i.e. y = 1.

Substitute in the equation gives,

250x + 750 × 1 = 3000

i.e. 250x = 3000 - 750

i.e. 250x = 2250

i.e. x = 9

Thus, the maximum number of $250 bonus are 9.

Hence, one possible number of bonus is 9.

4 0
2 years ago
In which interval is the radical function f of x is equal to the square root of the quantity x squared plus 2 times x minus 15 e
sergij07 [2.7K]

Using function concepts, it is found that it is increasing on the interval:

(–∞, –5] ∪ [3, ∞)

---------------

The function is given by:

f(x) = \sqrt{x^2 + 2x - 15}

The graph is given at the end of this question.

  • If the function is pointing upwards, it is increasing. Otherwise, it is decreasing.
  • In the graph, it can be seen that it is pointing upwards for x of -5 and less, or 3 and higher, thus, the interval is:

(–∞, –5] ∪ [3, ∞)

A similar problem is given at brainly.com/question/13539822

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2 years ago
Jim wants to start investing in bonds. He checks with two brokers to ask them for suggestions of bonds to buy. Broker J, who cha
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I agree with the given answer because of the gain or loss on retirement of bonds = book value of bonds - the amount paid to the bondholders
8 0
2 years ago
Read 2 more answers
Write the multiple regression equation for miles per gallon as the response variable. Use weight and horsepower as predictor var
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Answer:

Step-by-step explanation:

Response Variable: Miles per gallon

Predictor Variables: Weight, Horsepower

The multiple regression equation would be: M = aW + bH + c

where M = miles per gallon

a = slope of the graph of W on M OR rate of change in M due to change in W

W = weight

b = slope of the graph of H on M OR rate of change in M due to change in H

H = horsepower

c = intercept of M on the y-axis OR constant variable

How might the car rental company use this model?

The car rental company might use the regression model to determine the following:

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- Effect of horsepower on miles per gallon; etc.

8 0
2 years ago
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