3 years ago

Find x and EF if BD is an angle bisector

1 answer:

6 0

If we knew what 'x', 'EF', and 'BD' are, and how they may be related, then we might have a fighting chance at answering this one. My hunch is that there used to be a picture but it got lost.

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Write the trinomial as a square of a binomial<br> x^2+2xy+y^2

vitfil [10]

Answer:

$\large\boxed{x^2+2xy+y^2=(x+y)^2}$

Step-by-step explanation:

$(x+y)^2=(x+y)(x+y)\\\\\text{Use FOIL}\ (a+b)(c+d)=ac+ad+bc+bd\\\\=(x)(x)+(x)(y)+(y)(x)+(y)(y)=x^2+xy+xy+y^2=x^2+2xy+y^2$

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3 years ago

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The heights of male students are normally distributed with a mean of 160 cm and a standard deviation

kompoz [17]

Answer:

2.28%

Step-by-step explanation:

As this is normally distributed, we can use z scores to find the percentage.

First, find the z-score for 148.

The z-score that you get is:

(148-160)/2=2

As we see that z=2, we can use a calculator or a z-score chart to find the percentage less than a z score of 2.

I used my chart and found: 2.28%

4 0

3 years ago

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What multiple of 8 is also a factor of 8?

Dennis_Churaev [7]

8, because the factors of 8 are 1,2,4,8, while the multiples of 8 start with 8,16,24, etc

5 0

4 years ago

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1. In order to join a dancing club, there is a $30 startup fee and a $4 monthly fee. Write an equation in slope-intercept form t

weqwewe [10]

Answer:

y =mx+b

y= 4x+30

Step-by-step explanation:

4 0

3 years ago

Help Please!<br> I only have 52 minutes and I really don’t understand this

Paraphin [41]

Answer:

the first answer

Step-by-step explanation:

5 0

3 years ago