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Len [333]
3 years ago
9

Rohit wants to find the best model for a bivariate data set. He used a calculator to create a linear model, a quadratic model, a

nd an exponential model. The coefficient of determination for the linear model was 0.85. The coefficient of determination for the quadratic model was 0.90. The coefficient of determination for the exponential model was 0.81. Which model should he use to represent the data set?

Mathematics
2 answers:
san4es73 [151]3 years ago
8 0

The answer is quadratic, I took the test.

sasho [114]3 years ago
5 0

Answer: quadratic

Step-by-step explanation:

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No scale is shown on this map of a wilderness area. The distance between Rose Lake and the main road is 3.5 mi. On the map it is
vivado [14]

Answer:

<em>The actual distance between Rose Lake and the hiking trail is 7 miles.</em>

Step-by-step explanation:

The actual distance between Rose Lake and the main road is 3.5 miles and the scaled distance on the map is 2 inch.

Suppose, the actual distance between Rose Lake and the hiking trail is  d miles.

Given that, the scaled distance from Rose Lake to the hiking trail on the map is 4 inch.

So, <u>according to the ratio of "scaled distance" to the "actual distance"</u>, the equation will be......

\frac{2}{3.5}= \frac{4}{d} \\ \\ 2d=4*3.5=14\\ \\ d=\frac{14}{2}=7

Thus, the actual distance between Rose Lake and the hiking trail is 7 miles.


4 0
3 years ago
Let the random variable X denote the number of network blackouts in a day. The
faltersainse [42]
E(X) = 0(0.7) + 1(0.2) + 2(0.1) = 0.2 + 0.2 = 0.4
The expected daily loss due to blackouts = 0.4 * $500 = $200

Var(X) = 0(0.7 - 0.4)^2 + 1(0.2 - 0.4)^2 + 2(0.1 - 0.4)^2 = 0.04 + 0.18 = 0.22
The expected daily variance due to blackouts = 0.22 * $500 = $110
6 0
3 years ago
Two teams are selling candy bars to raise money. Team A has $165 saved and they are selling each candy bar for $2. Team B has $7
devlian [24]

Answer: Each have to sell 91 candy bars to have the same amount of money.

Step-by-step explanation: Suppose x represents the amount of candy bars.

Team A already have $165 and they are selling each candy bar for $2. The mathematical equation that represents the amount of money they have is

A: 165 + 2x

Team B initially has $74 and will sell each candy bar for $3. Then, the mathematical equation representing their amount of money is

B: 74 + 3x

So, to have the same amount of money:

165 + 2x = 74 + 3x

x = 165 - 74

x = 91

<u>Teams A and B will have the same amount of money when each of them </u><u>sell 91 candy bars</u>.

6 0
2 years ago
What is the equation of a line that is perpendicular to y = 3x -2 and passes
White raven [17]

Answer:

A. y=-1/3x+10

Step-by-step explanation:

Perpendicular gradients(slopes) are negative reciprocals so

m=-1/3  then use the point (6,8) to find the equation of the line

y=mx+b

8=(-1/3)(6)+b

8=-2+b

b=10

y=-1/3x+10

7 0
2 years ago
Please help fast will give brainliest
antoniya [11.8K]

Answer:

THE ANSWER IS C

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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