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kondaur [170]
2 years ago
15

For a party, Susan estimated there would be 14 people in attendance, but only 12 showed up. What was the percent error in her es

timation?
Mathematics
2 answers:
Gennadij [26K]2 years ago
8 0
14.3% would be the answer
Mariana [72]2 years ago
5 0
She was only %85.7 correct
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What's the midpoint of a line segment joining the points (5, –4) and (–13, 12)?
Vikki [24]

Answer:

The midpoint of the line segment is located at (-4, 4).

Step-by-step explanation:

We're given the coordinate points of a line that can help us find the midpoint.

The midpoint formula for a line is written as:

\bullet \ \ \ \displaystyle\big(\frac{x_1+x_2}{2}, \frac{y_1+y_2}{2}\big)

Additionally, we are given the coordinate points (5, -4) and (-13, 12). We can use these and label them with the (x, y) system so we can substitute them into the formula.

In math, a coordinate pair is written as (x, y). This is where cos = x and sin = y. If we are given two coordinate pairs, we can label them with the (x, y) system but also incorporating a subscript to distinguish the two x-values from each other as well as the y-values. We do this by turning the two x-values into x₁ and x₂ and the y-values follow the same protocol: y₁ and y₂.

Therefore, we can label our two coordinates:

<u>(5, -4)</u>

  • x₁ = 5
  • y₁ = -4

<u>(-13, 12)</u>

  • x₂ = -13
  • y₂ = 12

Now, we can place these values into the midpoint formula and simplify to find our midpoint.

Recall that the midpoint formula is:

\bullet \ \ \ \displaystyle\big(\frac{x_1+x_2}{2}, \frac{y_1+y_2}{2}\big)

Therefore, let's substitute these values.

\displaystyle\big(\frac{x_1+x_2}{2}, \frac{y_1+y_2}{2}\big)\\\\\\\big(\frac{5 + (-13)}{2}, \frac{(-4)+12}{2}\big)\\\\\\\big(\frac{-8}{2}, \frac{8}{2}\big)\\\\\\\boxed{(-4, 4)}

Therefore, the midpoint of the line segment is located at (-4, 4), which is Option A.

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Step-by-step explanation:

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7x67<br> 3x57<br> 6x 6<br> 4 x0<br> 15X4
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Answer:

1. 469 2. 171 3. 36 4. 0 5. 60

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Select the correct answer from each drop-down menu. The table lists the speeds of the fastest roller coasters in North America a
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Answer:

the answer is

6.41

12.78

17.226

Step-by-step explanation:

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6 4/5 of what number is 1 7/10 <br> Show your work
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Answer:

The number is 1/4

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Step-by-step explanation:

Look at the photo below for the details.

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