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3 years ago

Evaluate 3/2y -3+5/3 when y =6 and z =3

Mathematics

2 answers:

Alina [70]3 years ago

8 0

There is no z in the equation

Archy [21]3 years ago

3 0

Answer: im not too sure of the answer but you should go to ma th way

it usually explains it for u

Step-by-step explanation:

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A librarian put 42 books back on the shelves before lunch. Of the books, 14 were non-fiction. What is the ratio of the number of

vivado [14]

Answer:

Non fiction : Total number of books

= 14 : 42

= 1:3

Step-by-step explanation:

Total number of books = 42 books

Non fiction books = 14 books

The ratio of the number of non-fiction books to the total number of books is :

Non fiction : Total number of books

= 14 : 42

Further simplified

= 1:3

5 0

3 years ago

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

4 years ago

What does a residual value of –4.5 mean in reference to the line of best fit?

Step2247 [10]

Answer:

The residual value is the difference between the observed value (from the scatter plot) and the predicted value (from the line of best fit).

Step-by-step explanation:

The residual value is the difference between the observed value (from the scatter plot) and the predicted value (from the line of best fit).

Residual Value = Observed Value - Predicted Value

<em>Since the residual value of -4.5 is negative, we can say the predicted value is larger than the observed value. In other words, the line of best fit is "above" the scatter plot point in that specific point.</em>

7 0

4 years ago

Read 2 more answers

4. What is the perimeter of the rectangle<br> below?<br> 6 in.<br> 8 in.<br> 8 in.<br> 6 in.

Ivanshal [37]

Answer:

28 in.

Step-by-step explanation:

All you have to do is all the length of all the sides: 6+6+8+8=28 in.

7 0

3 years ago

Read 2 more answers

10,000-99,999 < 0. true or false

pav-90 [236]

<h2><u>TRUE</u> is the correct answer!</h2><h3 /><h3>10,000 - 99,999 = -89,999</h3><h3>Since it's a NEGATIVE number, it is smaller than zero.</h3><h3 /><h3><em>Please let me know if I am wrong.</em></h3>

8 0

3 years ago