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trapecia [35]
3 years ago
13

Triangle A is dilated by a scale factor of 2. What is the ratio of the perimeter of Triangle A to the perimeter of Triangle B? A

) 1:2 B) 1:3 C) 1:4 D) 1:8

Mathematics
2 answers:
leva [86]3 years ago
7 0

The answer is A) 1:2

Svetach [21]3 years ago
5 0

Answer: 1:2

Step-by-step explanation: 1:2. The two triangles are similar, therefore, the ratio of the perimeters is the same as the ratio of the sides.

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Is ab perpendicular to cd ? Explain.
Afina-wow [57]
We know that
if two lines are perpendicular
then
the slopes 
m1*m2=-1

step 1
find the slope AB
A (0,2)
B (-3,-3)
m=(y2-y1)/(x2-x1)-----> m=(-3-2)/(-3-0)-----> m=-5/-3----> m1=5/3

step 2
find the slope CD
C (-4,1)
D (0,-2)
m=(y2-y1)/(x2-x1)-----> m=(-2-1)/(0+4)-----> m=--3/4----> m2=-3/4

step 3
multiply mi*m2
(5/3)*(-3/4)-----> -15/12
so
15/12 is not -1
therefore
 AB is not perpendicular to CD
4 0
4 years ago
A band sold out 4 of its last 20 shows. What is the experimental probability that the band's
kykrilka [37]

Answer:

\frac{1}{5} probability

Step-by-step explanation:

P(Sold Out)= \frac{4}{20}

\frac{4}{20} =\frac{1}{5}

So since the experimental probability is the number of times an event occurs out of the total number of trials...

The answer to "what is the experimental probability that the band's  next show will be sold out?" Is \frac{1}{5}!!!

Hope this helped you!

Have a nice evening!

8 0
3 years ago
What is the percent of change from 8.0 to 8.2?
vodomira [7]
If you subtract the equation 8.0-8.2=-0.2. If you were to do the opposite then you would answer the equation 8.2-8.0=0.2. So therefore you have two options, -0.2 or 0.2. Good luck! 
4 0
3 years ago
Read 2 more answers
The computed chi-square value is positive because the difference between the observed and expected frequencies is
Pani-rosa [81]
The frequencies is small
5 0
3 years ago
Someone help? I need to get this right!
Lelechka [254]

Answer:

I think the answer is b

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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