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1 year ago

laura spends 4 hours reading a book that is 76 pages long. what is the average number of pages she read per hour?

Mathematics

1 answer:

Studentka2010 [4]1 year ago

5 0

The average number of pages she reads per hour is 19 pages per hour

<h3>How to determine the average number of pages she read per hour?</h3>

The given parameters are:

Number of pages = 76 pages

Number of hours = 4 hours

The average number of pages she reads per hour is calculated using the following formula

Average = Number of pages/Number of hours

Substitute the known values in the above equation

Average = 76 pages/4 hours

Evaluate the quotient

Average = 19 pages per hours

Hence, the average number of pages she reads per hour is 19 pages per hours

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5, 3.1.24<br><br> f(x) = 3x² + 5; find f(x + 3) - [f(x) + 3]

Aleks [24]

Given that $f(x) = 3x^2 + 5$ , we have

$f(x + 3) = 3 (x + 3)^2 + 5 \\\\= 3 (x^2 + 6x + 9) + 5 \\\\= 3x^2 + 18x + 32$

so that

$f(x+3) - (f(x) + 3) = (3x^2 + 18x + 32) - (3x^2 + 8) \\\\= \boxed{18x + 24}$

3 0

2 years ago

Hey:)can you please help me posted picture of question

AysviL [449]

The correct option is (A) x^6 + x^5 - 2x^4 - 2x^3 + 3x^2 + 6x - 9

Explanation:
The product of two polynomials:
(x^3 + x^2 -3)(x^3 - 2x + 3)

Row1: x^6 x^5 -3x^3
Row2: -2x^4 -2x^3 6x
Row3: 3x^3 3x^2 -9

Add all of the above rows:
x^6 + x^5 - 3x^3 -2x^4 - 2x^3 + 6x + 3x^3 + 3x^2 -9

x^6 + x^5 - 2x^4 - 2x^3 + 3x^2 + 6x - 9 (Option A)

3 0

3 years ago

Sven can type 30 words per minute.How many words would he type in 20 minutes?

saveliy_v [14]

30 x 20=600
your answer is that he would type 600 words in 20 minutes.

8 0

3 years ago

How do you add/subtract in scientific notation? Answer in a sentence.

Anton [14]

Answer:

With a scientific calculator

6 0

3 years ago

PLEASE HELP WITH THESE 4 PROBLEMS

Marizza181 [45]

Answer:

y = -5/2x + 5
y = 2x -1
y = 24/11
y = 4x + 4

Step-by-step explanation:

To solve for y, subtract the x-term and divide by the coefficient of y.

5x +2y = 10

2y = -5x +10

y = -5/2x + 5

2y -4x = -2

2y = 4x -2

y = 2x -1

7y +4y = 24

y = 24/11

We assume there is a typo, but cannot tell what it is. Use the same method as described and demonstrated for the other problems.

-2x +1/2y = 2

1/2y = 2x +2

y = 4x +4

8 0

3 years ago