1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
____ [38]
3 years ago
15

There are $400$ pages in Sheila's favorite book. The average number of words per page in the book is $300$. If she types at an a

verage rate of $40$ words per minute, how many hours will it take to type the $400$ pages of the book?
Mathematics
1 answer:
avanturin [10]3 years ago
7 0

Answer:

50hours

Step-by-step explanation:

Given that there are 400 pages in Sheila's favorite book.

The average number of words per page in the book is 300

She types an average rate of 40words per minute.

So to type 400pages of the book

Total number of words in the pages = 400×300 = 120000 words

Typing rate : 40words ------- 1minute

120000 words ----------- x minutes

Hence we have 40 × X mins = 120000 × 1min

Make X the subject

40X = 120000minutes

X = 120000/40

X = 3000minutes

Since 60minutes = 1hour

3000minutes = 3000minutes/60

= 50hours

Hence it took her 50hours to type 400pages

You might be interested in
Circle O shown below has a radius of 21 inches. Find, to the nearest tenth, the radian
lord [1]

Answer:

He's right it's 0.8 I got the answer right thanks a lot dude

8 0
3 years ago
Explain the rule in solving inequalities with a negative coefficient.
dimulka [17.4K]

Answer:

  the comparison must be reversed when multiplying by a negative

Step-by-step explanation:

The rules of equality apply to solving inequalities, with the exception that multiplication or division by a negative number reverses the sense of the comparison:

  -x > 1

  x < -1 . . . . . multiply both sides by -1

____

Effectively, multiplication (or division) by a negative number is equivalent to reflection across the origin. Things that were ordered left/right (on the number line) are ordered right/left after such a reflection:

  -2 < -1

  1 < 2

_____

<em>Additional comment</em>

Application of any function requires that you pay attention to ordering. Some functions naturally reverse the order; others do so only on specific domains.

Consider f(x) = 1/x.

  1 < 2

  f(1) > f(2) . . . . because the slope of the f(x) function is negative everywhere.

__

<em>In the first and second quadrants</em>, the cosine function also reverses order.

  20° > 10°

  cos(20°) < cos(10°)

__

Probably the most commonly encountered function used with inequalities is the absolute value function.

  |x-3| > 2

This function has one domain where the slope is negative, and another domain where the slope is positive.

  For x < 3, the function negates its argument, so we have ...

     -(x -3) > 2

     -x +3 > 2

     -x > -1

     x < 1 . . . . . everywhere consistent with x < 3

  For x ≥ 3, the function does nothing, so we have ...

     x -3 > 2

     x > 5

  The solution to this absolute value inequality is (x < 1) ∪ (x > 5).

__

You can also resolve negative coefficients by adding the opposite. Addition and subtraction never require any change to the comparison operator.

  -x > 1

  0 > x +1 . . . . x is added

  -1 > x . . . . . . -1 is added

7 0
3 years ago
What is the answer?​
yulyashka [42]

Answer:

5

Step-by-step explanation:

Plz mark brainliest!!!

5 0
3 years ago
Liz earns a salary of $2,200 per month, plus a commission of 6% of her sales. she wants to earn at least $2,900 this month. ente
nlexa [21]
2200 + 0.06s > = 2900.....with s representing her total sales
0.06s > = 2900 - 2200
0.06s > = 700
s > = 700 / 0.06
s > = 11666.67 <== her sales has to be at least this
6 0
3 years ago
I need help what is 145 marked up 175%
Ede4ka [16]
First you multiply 145 by 01.75 to get how much you add to the total. You add 253.75 to 145 and get 398.75 as the answer
7 0
3 years ago
Other questions:
  • A friend bought a house 15 years ago, taking out a $120,000 mortgage at 6% for 30 years. How much does she still owe on the mort
    10·1 answer
  • Solve. |x+5|&gt;12 Help it would be great
    15·1 answer
  • The formula d = ft can be used to calculate the distance (d) an object travels using its rate of speed (r) and the time it trave
    10·1 answer
  • I really need help with this question
    5·1 answer
  • Which 2 options are correct?
    9·1 answer
  • Calculate the sum of the first 30 terms in the sequence that begins with 70,65,60
    15·1 answer
  • Is the ratio $81 in 9 hours equivalent to $63 in 7 hours
    14·1 answer
  • Determine the value of x in the diagram?<br><br> A.32<br> B.10<br> C.20<br> D.16
    10·2 answers
  • For the following set of 20 numbers:
    12·1 answer
  • Section 5.2-9. Solve the following system of equations by substitution or elimination. Enter your answer as (x,y).2x+y = 2-3x-2y
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!