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Crank
3 years ago
9

Find the mean median range and interquartile range of 28 30 29 26 31 and 30. Help brainlest.

Mathematics
2 answers:
Anit [1.1K]3 years ago
5 0
29.5 is the median, and the IQR is 2... hope this it might be wrong or right sorry if it is not correct...
vodomira [7]3 years ago
3 0
Mean = 30.67 (2 d.p)
Median= 30
Range= 8
IQR= 1
Those are my answer.
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Barry Allen's older brother is only 3 years more than triple Barry's age. If the sum of their ages is 28, find their ages
Sloan [31]
B and a
barry=b
a=older bro

a is 3 more than 3b
a=3+3b
sum is 28
a+b=28
3+3b+b=28
3+4b=28
minus 3 both sides
4b=25
divide both sides by 4
b=6.25

a=3+3b
a=3+3(6.25)
a=3+18.75
a=21.75


barry=6.25 years
21.75 years=older bro
3 0
3 years ago
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Select all explanation that prove triangle ABC is congruent to triangle A'B'C
Archy [21]

Answer:

AB = A'B'

BC = B'C'

AC = A'C'

angle ABC = angle A'B'C'

angle CAB = angle C'A'B'

angle CBA = angle C'A'B'

Step-by-step explanation:

use different axomes to show relation,

3 0
3 years ago
Simplify 0.4(−4.5). (5 points)
vovangra [49]

Answer:

-1.8, multiply them, then add the negative sign

Step-by-step explanation:

5 0
3 years ago
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I'm having trouble on ixl here is what I have to do
Sophie [7]

Answer:

6(9r-7)

Step-by-step explanation:

54r–42

Both 54 and 43 can be divided by 6

54/6 =9  and 42/6 =7

6*9r - 6*7

Factor out the 6

6(9r-7)

8 0
3 years ago
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Robin is a competitive archer. Her average arrow is within 6.5 cm of the center of the bullseye. John, Robin's trainer, keeps cl
polet [3.4K]

Answer:

Arrow C.

Step-by-step explanation:

Out of three arrows, nearest arrow from the origin will be the best arrow.

Ordered pair for arrow A → (-5, 4)

Distance between A and bullseye = \sqrt{(y_{2}-y_{1})^2+(x_{2}-x_{1})^2}

                                                    =  \sqrt{(0+5)^2+(0-4)^2}

                                                    = \sqrt{41}

                                                    = 6.40 units

Ordered pair for arrow B → (5, -5)

Distance between B and bullseye = \sqrt{(0-5)^2+(0+5)^2}

                                                         = 5\sqrt{2}

                                                         = 7.1 units

Ordered pair for arrow C → (-2, -6)

Distance between C and the bullseye = \sqrt{(0+2)^2+(0+6)^2}

                                                               = \sqrt{40}

                                                               = 6.32 units

Distance between C and the bullseye is the shortest.

Therefore, arrow C will be the best arrow.

8 0
4 years ago
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