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3 years ago

9

What is the postulate? please help

1 answer:

Olegator [25]3 years ago

6 0

Answer:

AAS or ASA

Step-by-step explanation:

To prove this congruent, you need 3 corresponding congruent parts. One of the angles are already marked congruent for you (<S and <K). Then WJ is equal to itself (reflexive property) and m<SWJ=m<WJK by alternate interior angles. You know this because the sides are parallel, and WJ acts as the transversal. So there you have it. Triangle SJW is congruent to Triangle KJW by AAS.

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2 years ago

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Point D is the centroid of Triangle ABC. Find CD and CE.<br> DE = 9

sukhopar [10]

Given:

Point D is the centroid of Triangle ABC and DE = 9.

To find:

The measures of CD and CE.

Solution:

We know that, centroid is the intersection of medians and it divides each median in 2:1.

In triangle ABC, CE is a meaning and centroid D divided CE in 2:1. So,

Let the measures of CD and DE are 2x and x respectively.

DE = 9 (Given)

$x=9$

Now,

$CD=2x$

$CD=2(9)$

$CD=18$

And,

$CE=CD+DE$

$CE=18+9$

$CE=27$

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3 years ago

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1 year ago

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2 years ago

Find the sample size, n, needed to estimate the percentage of adults who have consulted fortune tellers. Use a 0.02 margin of er

Brrunno [24]

Answer: 2172

Step-by-step explanation:

Formula to find the sample size n , if the prior estimate of the population proportion(p) is known:

$n= p(1-p)(\dfrac{z^*}{E})^2$ , where E= margin of error and z* = Critical z-value.

Let p be the population proportion of adults have consulted fortune tellers.

As per given , we have

p= 0.20

E= 0.02

From z-table , the z-value corresponding to 98% confidence interval = z*=2.33

Then, the required sample size will be :

$n= 0.20(1-0.20)(\dfrac{2.33}{0.02})^2$

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$n= 2171.56\approx2172$

Hence, the required sample size = 2172

3 0

2 years ago