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Ainat [17]
3 years ago
15

The length of a rectangle is represented by x+3 and the width by 2x-4. Write an expression for the area of this rectangle

Mathematics
1 answer:
madam [21]3 years ago
5 0

Answer:

2x² +2x - 12

Step-by-step explanation:

area of rectangle = length X width

length = x+3

width = 2x - 4

Area = (x+3)(2x-4)

        = x(2x-4) +3(2x-4)

        = 2x² - 4x + 6x - 12

        = 2x² +2x - 12

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For the following distribution: x p(x) 0 01.30 1 0.346 2 0.346 3 0.154 4 0.026 what is the mean of the distribution?
bogdanovich [222]

The mean of the distribution given is 0.569.

Given some distribution like under:

     x                           p(x)

     0                            0.650

     1                             0.216

     2                             0.087

     3                             0.026

     4                             0.014

      5                            0.009

We have to find the mean of the distribution.

Mean is the sum of numbers divided by the numbers which are taken into consideration. It is also known as average.

Mean=sum/n

To find the mean of distribution we have to find sum of x*p(x)

∑xp(x)=0*0.650+1*0.216+2*0.0087+3*0.026+4*0.014+5*0.009

=0+0.216+0.174+0.078+0.056+0.045

=0.569

Hence the mean of the distribution given in the question is 0.569.

Learn more about mean at brainly.com/question/1136789

#SPJ4

Distribution in the given question is wrong and the right question is as the right distribution is as under:

 x                           p(x)

     0                            0.650

     1                             0.216

     2                             0.087

     3                             0.026

     4                             0.014

     5                            0.009

5 0
2 years ago
Combine the like terms to create an equivalent expression:
Sphinxa [80]

Answer:

  7k

Step-by-step explanation:

  −k−(−8k) = -k +8k = 7k

6 0
3 years ago
What is the constant of proportionality in this relationship ???? Help fast !!!
photoshop1234 [79]

Answer:

3.28

Step-by-step

(3,18.85)

(2,12.57)

18.85-12.57/3-2=3.28

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3 years ago
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A circle has a radius of 6cm . find the length s of the arc intercepted by a central angle of 169° .
Igoryamba
The circumference of the circle is = 2 x pi x 6 = 37.7cm

To find the arc = 360 divided by 169 = 2.13

The arc = 37.7 divided by 2.13 =  17.69 cm
3 0
3 years ago
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