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Rudik [331]
4 years ago
14

Complete the square x^2-6x+__= -13+__

Mathematics
1 answer:
kicyunya [14]4 years ago
4 0

Answer:

Step-by-step explanation:

x^2 - 6x + __ = -13 + __

take half of the coefficient in ur x term, square it, and add it to both sides

so take half of -6.....which is -3......and square it....-3^2 = 9. Now add 9 to both sides.

x^2 - 6x + 9 = -13 + 9

(x - 3)^2 = - 4

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3 years ago
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The number of boxes of food that six volunteers collected for the food drive is given in the table below.
shutvik [7]

Answer:

The mean absolute value is 7.7, when rounded to the nearest tenth.

Step-by-step explanation:

1.) To get the mean absolute deviation you have to find the mean first:

  • 32 + 35 + 20 + 16 + 28 + 13 = 144 ÷ 6 = 24

2.) Then, you have to find the difference of each element in your data set that is away from the mean. Then, you have to find the absolute values of the answers:

  • 32 - 24 = | 8 | → 8
  • 35 - 24 = | 11 | → 11
  • 20 - 24 = | -4 | → 4
  • 16 - 24 = | -8 | → 8
  • 28 - 24 = | 4 | → 4
  • 13 - 24 = | -11 | → 11

3.) Then, you have to find the mean of the absolute values:

  • 8 + 11 + 4 + 8 + 4 + 11 = 46 ÷ 6 = 7.6666666666666666666666666666667‬ = 7.7
3 0
4 years ago
Can someone help me with 2 please
mina [271]
Rectangle RSTU
P = 2(9+6) = 2 (15) = 30

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answer.
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3 0
3 years ago
The height of a ball thrown vertically upward from a rooftop is modelled by h(t)= -4.8t^2 + 19.9t +55.3 where h (t) is the balls
nikitadnepr [17]

By applying the <em>quadratic</em> formula and discriminant of the <em>quadratic</em> formula, we find that the <em>maximum</em> height of the ball is equal to 75.926 meters.

<h3>How to determine the maximum height of the ball</h3>

Herein we have a <em>quadratic</em> equation that models the height of a ball in time and the <em>maximum</em> height represents the vertex of the parabola, hence we must use the <em>quadratic</em> formula for the following expression:

- 4.8 · t² + 19.9 · t + (55.3 - h) = 0

The height of the ball is a maximum when the discriminant is equal to zero:

19.9² - 4 · (- 4.8) · (55.3 - h) = 0

396.01 + 19.2 · (55.3 - h) = 0

19.2 · (55.3 - h) = -396.01

55.3 - h = -20.626

h = 55.3 + 20.626

h = 75.926 m

By applying the <em>quadratic</em> formula and discriminant of the <em>quadratic</em> formula, we find that the <em>maximum</em> height of the ball is equal to 75.926 meters.

To learn more on quadratic equations: brainly.com/question/17177510

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6 0
2 years ago
Carol has to buy shirts for her entire family. There are 27 members in Carol's family. She pays $425 for all of the shirts. How
Fittoniya [83]

Answer:

She pays $15.74

Step-by-step explanation:

Divide 425 by 27

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