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dimaraw [331]
3 years ago
9

Someone help please

Mathematics
2 answers:
pav-90 [236]3 years ago
5 0

Answer:

7.76

Step-by-step explanation:

tan 29° = XY/14

XY = tan 29° (14)

= 7.76

Sidana [21]3 years ago
4 0

Answer:

XY=7.76

Step-by-step explanation:

Tan25° says opp÷adj

so it's Tan29°=XY÷14

then multiply both sides by 14 to make CY the subject of the formula...

14×Tan29°=XY

therefore=XY=7.76

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2071 Old Q.No.5 Person's coefficient of skewness for a distribution is 0.4 and its coefficient of variation is 30%. If mode is 8
AlekseyPX

Answer:

Mean = 100

Median = 96

Step-by-step explanation:

Given

C_v = 30\% --- coefficient of variation

mode = 88

Skp = 0.4

Required

The mean and the median

The coefficient of variation is calculated using:

C_v = \frac{\sigma}{\mu}

Where:

\mu \to mean

So:

30\% = \frac{\sigma}{\mu}

Express percentage as decimal

0.30 = \frac{\sigma}{\mu}

Make \sigma the subject

\sigma = 0.30\mu

The coefficient of skewness is calculated using:

Skp = \frac{\mu - Mode}{\sigma}

This gives:

0.4 = \frac{\mu - 88}{\sigma}

Make \sigma the subject

\sigma = \frac{\mu - 88}{0.4 }

Equate both expressions for \sigma

0.30\mu = \frac{\mu - 88}{0.4 }

Cross multiply

0.4*0.30\mu = \mu - 88

0.12\mu = \mu - 88

Collect like terms

0.12\mu - \mu =  - 88

-0.88\mu =  - 88

Divide both sides by -0.88

\mu =  100

Hence:

Mean = 100

Calculate \sigma

\sigma = 0.30\mu

\sigma = 0.30 * 100

\sigma = 30

So:

Also, the coefficient of skewness is calculated using:

Skp = \frac{3 * (Mean - Median)}{\sigma}

0.4= \frac{3 * (100 - Median)}{30}

Multiply both sides by 30

0.4*30= 3 * (100 - Median)

Divide both sides by 3

0.4*10= 100 - Median

4= 100 - Median

Collect like terms

Median = 100 - 4

Median = 96

6 0
3 years ago
Cedarburg's zoo has two elephants. The male elephant weighs 3 3/4 tons and the female
kati45 [8]

Answer:

the male weigh than the female

Step-by-step explanation:

\frac{19}{6}=3\frac{1}{6}

3 0
3 years ago
Find the slope. HELP!
weeeeeb [17]

Answer:

-3

Step-by-step explanation:

I attached I picture of the work

just ignore the stuff at the very top

3 0
3 years ago
Find X using the Angle Sum Theorem
sleet_krkn [62]

Answer:

x = 20°

Step-by-step explanation:

So when I learned it we called it the exterior angle theorem not the angle sum theorem but here goes.

Since exterior angle = 110 Degrees,

--> The Inner 2 angles's sum = 110 Degrees

so, 70 + 2x = 110

=> 2x = 40

x = 20

x = 20°

<u>Hope this helps!</u>

4 0
3 years ago
Please look at the photo! I need help! QUICK!
nignag [31]

Answer:

b

Step-by-step explanation:

b should be done first because of PEMDAS which justifies you have to take everything out of parenthesis

5 0
3 years ago
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