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olganol [36]
3 years ago
14

Calculate the average (arithmetic mean)of the list of numbers shown in the table (rounded to the nearest tenth) 1049.0 1180.0 11

80.1 1348.7
Mathematics
1 answer:
horrorfan [7]3 years ago
4 0

Answer:

The average of the list of numbers is 1189.5

Step-by-step explanation:

Mean of a data-set:

The mean of a data-set is the sum of all values in the data-set divided by the number of values.

In this question:

Sum:

1049.0+1180.0+1180.1+1348.7 = 4757.8

Mean:

4 values, so:

4757.8/4 = 1189.5

The average of the list of numbers is 1189.5

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The price of parking for 2 hours or less at the airport is increasing
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Answer:

it increased 50%

Step-by-step explanation:

5 / 2.5 = 2

100 / 2 = 50%

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Which of the following equations is of a parabola with a vertex at (3, 0)?
bixtya [17]

Answer:

D. y = (x - 3)²

Step-by-step explanation:

The parabola formula in vertex form is:

y = a(x - h)² + k

where the vertex is located at (h, k). Replacing with vertex (3, 0) we get:

y = a(x - 3)² + 0

y = a(x - 3)²

In all possible options the leading coefficient <em>a</em> is equal to one. Therefore:

y = (x - 3)²

7 0
2 years ago
Given the polynomail function below, find f(-5) f(x)=x^2-2x-7
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8 0
3 years ago
Find the midpoint of the line segment defined by the points: (5, 4) and (−2, 1) (2.5, 1.5) (3.5, 2.5) (1.5, 2.5) (3.5, 1.5)
Setler79 [48]

Answer:

\boxed {\boxed {\sf (1.5 , 2.5)}}

Step-by-step explanation:

The midpoint is the point that bisects a line segment or divides it into 2 equal halves. The formula is essentially finding the average of the 2 points.

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

In this formula, (x₁, y₁) and (x₂, y₂) are the 2 endpoints of the line segment. For this problem, these are (5,4 ) and (-2, 1).

  • x₁= 5
  • y₁= 4
  • x₂= -2
  • y₂= 1

Substitute these values into the formula.

( \frac {5+ -2}{2}, \frac {4+1}{2})

Solve the numerators.

  • 5+ -2 = 5-2 = 3
  • 4+1 = 5

( \frac {3}{2}, \frac{5}{2})

Convert the fractions to decimals.

(1.5, 2.5)

The midpoint of the line segment is (1.5 , 2.5)

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The book Kathy is reading is 540 pages long. So far, she has read 405 pages. What percent of the book does she have left to read
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405/540 = 0.75 —> 75%

The answer is C.
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