3 years ago

Help please fast i beg

Mathematics

1 answer:

Natasha2012 [34]3 years ago

8 0

Answer:

2,3

Step-by-step explanation:

X=2

Y=3

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12.4. Measure of Dispersion 2076 Q.No. 15 Find the standard deviation of: 4, 6, 8, 10, 12.

Alenkinab [10]

Answer:

Standard deviation of given data = 3.16227

Step-by-step explanation:

Step(i):-

Given sample size 'n' = 5

Given data 4, 6,8,10,12

$Mean = \frac{4+6+8+10+12}{5} = 8$

Mean of the sample x⁻ = 8

Standard deviation of the sample

$S.D = \sqrt{\frac{Sum(x-x^{-} )^{2} }{n-1}}$

Step(ii):-

Given data

x : 4 6 8 10 12

x-x⁻ : 4 - 8 6-8 8-8 10-8 12-8

(x-x⁻) : -4 -2 0 2 4

(x-x⁻)² : 16 4 0 4 16

$S.D = \sqrt{\frac{Sum(x-x^{-} )^{2} }{n-1}}$

$S.D = \sqrt{\frac{16+4+0+4+16}{4}}$

S.D = √10 = 3.16227

Final answer:-

The standard deviation = 3.16227

8 0

3 years ago

The sum of all but one interior angle of a heptagon is 776°. The final angle must have a measure of

shutvik [7]

A heptagon has 7 sides.

Sum of all interior angles = (7 - 2) x 180 = 900°

900 - 776 = 124°

Answer: The final angle must be 124°

5 0

3 years ago

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7x + 3y + 2x Please help me

Pachacha [2.7K]

Answer:

Your expression would be 9x + 3y

Step-by-step explanation:

Coefficients with the same variables can be added together

7 0

3 years ago

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If I walk 3/4 mile to work and 3/4 mile home each day, how long will it take me to walk 3 miles?

anastassius [24]

Answer:

2 days

Step-by-step explanation:

for a day you walk 1.5 mile (0.75 + 0.75)

so it will only take 2 days

6 0

4 years ago

Can yall plz help!!!

lesya692 [45]

Number one would be -8

4 0

4 years ago