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ASHA 777 [7]
2 years ago
15

Please helppppppppppppppppppppppppppppppppppppppppppppppppppp

Mathematics
2 answers:
Veseljchak [2.6K]2 years ago
5 0

Answer: C (x=21)

Step-by-step explanation:

x-6/3=5

5x3=15

15+6=21

Check

x-6/3=5

21-6/3=?

15/3=5

Answer= x=21

VladimirAG [237]2 years ago
3 0

Answer:

x=21

Step-by-step explanation:

cross multiplying:

x-6=15

x=15+6

x=21

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A uniform distribution is defined over the interval from 6 to 10.
zhuklara [117]

Answer:

Refer below

Step-by-step explanation:

a) a and b are the lower and higher values of the interval for which uniform distribution is defined.

Here a= 6 and b =10

b) Mean of the uniform distribution= (a+b)/2 = (6+10)/2 =8

Or int x (1/4) dx = x^2/8 = 8

c) Variance of the uniform distribution = (b^2-a^2)/12 = (100-64)/12

= 36/12 =3

Std dev = sq rt of 3 = 1.732

d) To find total area

PDF of the distribution = 1/(b-a) = 1/4, 6<x<10

Area = \int 6 to 10 of 1/4 dx

= x/4

Subtitute limits

= (10-6)/4 =1

So total area = 1

d)P(X>7) = int 7 to 10 of 1/4 dx = 3/4

e) P(7<x<9) = Int 7 to 9 of 1/4 dx = 2/4 = 1/2


8 0
4 years ago
Write the slope-intercept form of the equation of the line described.
iren2701 [21]

Answer:

9) y=3x+11

10) y=-3x-6

Step-by-step explanation:

plug the numbers in to find your y intercepts

6 0
3 years ago
Write a numerical expression with<br> exponents to describe the sum of 3x3x<br> 3 x 3 and 36.
Sergio [31]

Answer:

3 to the power of 4

Step-by-step explanation:

you set the exponent to the amount of times 3 is being multiplied by

5 0
3 years ago
Line segment AB has endpoints A(3, -7) and B(-9,-5). Find the equation of the perpendicular bisector
kupik [55]

Answer:

y = 6x + 12

Step-by-step explanation:

We require the midpoint M and slope of AB

Using the midpoint formula, then

M = [ \frac{1}{2} (3 - 9) , \frac{1}{2} (- 7 - 5) ] = (- 3, - 6 )

Calculate the slope m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = A(3, - 7) and (x₂, y₂ ) = B(- 9, - 5)

m = \frac{-5+7}{-9-3} = \frac{2}{-12} = - \frac{1}{6}

Given a line with slope m then the slope of a line perpendicular to it is

m_{perpendicular} = - \frac{1}{m} = - \frac{1}{-\frac{1}{6} } = 6

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Here m = 6 , thus

y = 6x + c ← is the partial equation

To find c substitute M(- 3, - 6) into the partial equation

- 6 = - 18 + c ⇒ c = - 6 + 18 = 12

y = 6x + 12 ← equation of perpendicular bisector

3 0
3 years ago
there are 239 people in the first six rows of the movie theater if the same number of people are in the next six rows about how
aksik [14]
Well you first would divide 239 by 6 which is 39.8333333 then you would divide 239 by 6 again and add those two together which would by 79.6666666 and then you will round you answer (or don't if your teacher told you other wise) to the nearest whole number which would give you your answer 80 people in the first twelve rows.
3 0
3 years ago
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