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zysi [14]
3 years ago
7

A black car and a green car are traveling at the same speed. The black car drives 3 hours. The green car drives 3.5 hours and go

es 25 miles farther than the black car. Use x for the speed of the cars. In the time the green car goes 3.5x miles, the black car goes 3x+25 miles. Which equation can be solved to find how fast the cars are going?
Mathematics
1 answer:
Burka [1]3 years ago
6 0

Answer:

x=25 1/3.5-3

Step by Step Explanation:

1/2=25 miles

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Suppose the line of best fit for some data points has a slope of 4.915. If the mean of the x-coordinates of the data points is 1
aleksley [76]

The y-intercept of the linear equation of best fit, considering the slope and the means, is of -60.428.

<h3>What is a linear function?</h3>

A linear function is modeled by:

y = mx + b

In which:

  • m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.
  • b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.

For a line of best-fit, the y-intercept is given by:

b = \overline{y} - m\overline{x}

The parameters in this problem are given as follows:

m = 4.915, \overline{x} = 14.347, \overline{y} = 10.088

Then:

b = 10.088 - 4.915(14.347) = -60.428

More can be learned about linear functions at brainly.com/question/24808124

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5 0
1 year ago
Triangle DEF is reflected over the y-axis, and then translated down 4 units and right 3 units. Which congruency statement descri
vovikov84 [41]

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Answer:

  B.  ΔDEF ≅ ΔSRU

Step-by-step explanation:

Reflection changes corresponding vertices from CCW order to CW order. Vertex D gets reflected to (-6, 4), then translated to (-3, 0). After this transformation, its image is vertex S. The vertices in CW order from S are SRU. Hence, ΔDEF ≅ ΔSRU, matching choice B.

3 0
2 years ago
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