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3 years ago

Are two isosceles triangles always similar? Explain. (1 point)

Mathematics

1 answer:

lara [203]3 years ago

8 0

Answer:

No, because the ratios of the sides that form the vertex angles are the same, but the vertex angles may not be congruent.

Step-by-step explanation:

I just took the quick check

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Roll two fair dice. Each die has six faces. A. Let A be the event that either a 3 or 4 is rolled first followed by an odd number

zhenek [66]

Answer:

A. 0.16

B. 0.58

C. No

D. Dependent

Step-by-step explanation:

The sampling space has 36 outcomes.

The event A has 6 outcomes (3,1), (3,3), (3,5), (4,1), (4,3),(4,5)

So P(A)= 6/36 = 0.16

The table in the picture shows the 15 outcomes that are not allowed, so there are 36-15 = 21 possible outcomes for B and its probability is 21/36 = 0.58

Are A and B mutually exclusive events?

No since their intersection is not empty, for example (3,1) belongs to both A and B

In order for A and B to be independent, it must happen that

P(A∩B)=P(A)P(B)

A∩B={(3,1),(3,3),(4,1)} so P(A∩B) = 3/36

whereas

P(A)P(B) = (6/36)(21/36) = (1/6)(7/12)=7/72

So A and B are not independent.

7 0

4 years ago

Please help me!! I will give brainliest.

Flura [38]

Answer:

Step-by-step Solution:

Simply change the denominators such that both denominators are the same. Then, add the fractions to get your result.

1/2 + 1/6
=> 3 x 1/2 x 3 + 1/6
=> 3/6 + 1/6
=> 4/6 = 2/3

Hence, the solution is 2/3.

6 0

2 years ago

Read 2 more answers

We use the t distribution for the statistical inference of the population mean when the underlying population standard deviation

Digiron [165]

Answer:

Step-by-step explanation:

Since population std deviation is not known, we use t critical value for testing of hypothesis.

a) 90% conf level when n =28

df = 27, t critical = 1.706

b) 95% 28

df =27 and t critical = 2.052

c) 90% and 15

df =14 and t critical = 1.761

d) 95% and n =15

df =14: t critical = 2.145

6 0

3 years ago

Anyone help with my homework plz?

iren2701 [21]

Hi!

This is definitely a trapezoid, as it has two equal sides and two inequal sides. It's not a parallelogram, because two sides eventually intersect. It is a quadrilateral, because it has four sides.

None of the others apply here.

If you found this especially helpful, I'd appreciate if you'd vote me Brainliest for your answer. I want to be able to assist more users one-on-one, as well as to move up in rank! :)

3 0

3 years ago

WILL MARK BRAINLIEST FEELING LAZY WORTH 15 POINTS

Zinaida [17]

The irrational numbers are: √8, √10 and √15

Step-by-step explanation:

A rational number is a number that can be written in the form p/q where p&q are integers and q≠0.

"All the numbers whose square root is not a whole number and has an infinite number of digits after decimal, are irrational numbers"

So in the given options

$\sqrt{4} = 2$