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fomenos
3 years ago
7

Find AB, given that line AD is the perpendicular bisector of BC

Mathematics
1 answer:
astraxan [27]3 years ago
5 0

Answer:

AB = 9

Step-by-step explanation:

The perpendicular bisector divides Δ ABC into 2 congruent triangles, that is

Δ ABD ≅ Δ ACD , then

AB = AC = 9

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URGENT HELPPP !!!!!! Please answer correctly !!!!! Will mark Brianliest !!!!!!!!!!!!!
GaryK [48]

Answer:

(8,-3)

Step-by-step explanation:

I just added 1 to the x value and added 2 to the y value because that was the difference between point A and the midpoint of the segment.

Hope this helps!

3 0
2 years ago
a slitter assembly contains 48 blades five blades are selected at random and evaluated each day for sharpness if any dull blade
12345 [234]

Answer:

P(at least 1 dull blade)=0.7068

Step-by-step explanation:

I hope this helps.

This is what it's called dependent event probability, with the added condition that at least 1 out of 5 blades picked is dull, because from your selection of 5, you only need one defective to decide on replacing all.

So if you look at this from another perspective, you have only one event that makes it so you don't change the blades: that 5 out 5 blades picked are sharp. You also know that the probability of changing the blades plus the probability of not changing them is equal to 100%, because that involves all the events possible.

P(at least 1 dull blade out of 5)+Probability(no dull blades out of 5)=1

P(at least 1 dull blade)=1-P(no dull blades)

But the event of picking one blade is dependent of the previous picking, meaning there is no chance of picking the same blade twice.

So you have 38/48 on getting a sharp one on your first pick, then 37/47 (since you remove 1 sharp from the possibilities, and 1 from the whole lot), and so on.

Also since are consecutive events, you need to multiply the events.

The probability that the assembly is replaced the first day is:

P(at least 1 dull blade)=1-P(no dull blades)

P(at least 1 dull blade)=1-(\frac{38}{48}* \frac{37}{47} *\frac{36}{46}*\frac{35}{45}*\frac{34}{44})

P(at least 1 dull blade)=1-0.2931

P(at least 1 dull blade)=0.7068

6 0
3 years ago
18/50 as a mixed number
vivado [14]

Answer:

2  14/50 simplified to 2  8/25 (all I did was divide 14 and 15 by 2)

Step-by-step explanation:

To convert an improper fraction to a mixed fraction, divide the numerator by the denominator, write down the quotient as the whole number and the remainder as the numerator on top of the same denominator.

6 0
2 years ago
Read 2 more answers
Your friend dvr cost $328 less then her tv her dvr cost 1.79 write and find out how much her tv cost
In-s [12.5K]

Answer:

1.79+328

Step-by-step explanation:

1.79+328

the dvr is 1.79 and it is 328 less than the tv, so if you add the 2 together you will get the cost of the tv

4 0
3 years ago
What is the reciprocal of tanB in the triangle below?
UNO [17]

Answer:

Step-by-step explanation:

Note that the reciprocal of tan B is by definition the cotangent (cot) of B:

   1                        adjacent side           BC

---------- = cot B = ----------------------- =  ---------

 tan B                   opposite side            AC

5 0
3 years ago
Read 2 more answers
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