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3 years ago

Which figure has both lines of symmetry and symmetry and rotation symmetry?

Mathematics

2 answers:

nydimaria [60]3 years ago

6 0

Answer:

the first one is one line of symmetry

Sedaia [141]3 years ago

3 0

Answer:

Pentagon

Step-by-step explanation:

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A test consists of 10 true or false questions. To pass the test a student must answer at least eight questions correctly. If the

forsale [732]

<h3>The probability of student passing the quiz with at least 50% of the questions correct is 0.05457.</h3>

Step-by-step explanation:

Here, the total number of T/F question = 10

The minimum answers needed correctly answered = 8

So, student needs to answer at least 8 questions correctly.

Here, the possibility of answering a question correctly = $(\frac{1}{2})$ = p = 0.5

Also, the possibility of answering a question wrong = $(\frac{1}{2})$ = q = 0.5

Now, to pass he needs to answer 8 or more ( 8 , 9 or 10) answers correctly.

P(answering 8 correct answer) = $^{10}C_8(p)^8(q)^2 = ^{10}C_8(0.5)^8(0.5)^2 = 0.0439$

P(answering 9 correct answer) = $^{10}C_9(p)^9(q)^1 = ^{10}C_9(0.5)^9(0.5)^1 = 0.0097$

P(answering 10 correct answer) = $^{10}C_{10}(p)^{10}(q)^0 = ^{10}C_{10}(0.5)^{10}(0.5)^0 = 0.00097$

So, the total Probability = P(8) + P(9) + P(10)

= (0.0439) + (0.0097) + (0.00097)

= 0.05457

Hence, the probability that the student passes the quiz with at least 8 of the questions correct is 0.05457.

6 0

3 years ago

Find the missing angle according to the Triangle Exterior Angle Theorem

atroni [7]

Answer:

x=128°

Step-by-step explanation:

90+38=128

5 0

2 years ago

Which number line shows the solutions to n> 0?

Brilliant_brown [7]

Answer:

Choice A

Step-by-step explanation:

There should be an open circle at 0 since there is no equals in the inequality

n is greater than zero so the line goes to the right.

Choice A

5 0

2 years ago

Read 2 more answers

A dress is on sale for 15% discount, meaning 85% of the price remains. If the sale price of the dress is $51, then the original

ira [324]

Answer:

Step-by-step explanation:

let the original price=x

85 % of x=51

$x=51*\frac{100}{85} =60$

5 0

3 years ago

There are 6 paintings on three walls of a room. If annart gallery has 13 such rooms, how many paintings are there in its collect

SSSSS [86.1K]

Answer: (I think)

78 paintings

Step-by-step explanation:

6 x 13 = 78

3 0

3 years ago

Which figure has both lines of symmetry and symmetry and rotation symmetry?​

Which figure has both lines of symmetry and symmetry and rotation symmetry?