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
svlad2 [7]
3 years ago
10

Mr. Sanchez bought some book s at the book sale, including 15 paperbacks books. 75% of all the books he bought were paperbacks.

How many books did Mr. Sanchez buy in all
Mathematics
1 answer:
goblinko [34]3 years ago
4 0

Answer:

Sanchez bought 20 books.

Step-by-step explanation:

Represent the total number of books purchased by t.  Then:

0.75n = 15.  Thus, n = 20.

Sanchez bought 20 books.

You might be interested in
What values of x make the equation x(squared)+9x-22=0
kkurt [141]

Answer:

x = 2 \:  \:  \:  \:  \: or \:  \:  \:  \:  \: x =  - 11

Step-by-step explanation:

{x}^{2}  + 9x - 22 = 0 \\  {x}^{2}  + 11x - 2x - 22 = 0 \\  x(x + 11) - 2(x + 11) = 0 \\ (x - 2)(x + 11) = 0 \\ x - 2 = 0 \:  \:  \:  \:  \: or \:  \:  \:  \:  \: x + 11 = 0 \\ x = 2 \:  \:  \:  \:  \: or \:  \:  \:  \:  \: x =  - 11

4 0
3 years ago
If f(x)=4/3x-9 what is f^-1(-3)
jolli1 [7]

9514 1404 393

Answer:

  4.5

Step-by-step explanation:

The value of x that makes f(x) = -3 is ...

  4/3x -9 = -3

  4/3x = 6 . . . . . . add 9

  x = 6(3/4) = 18/4 = 9/2 = 4.5 . . . . multiply by 3/4

f^-1(-3) = 4.5

4 0
3 years ago
You're designing an experiment that looks at the effect of different types of newly
8_murik_8 [283]

I need this answer too, did you figure it out?

5 0
3 years ago
Read 2 more answers
Please help 20 points
SpyIntel [72]
Four angles must add up to 360.

∠A+∠B+∠C+∠D=360 (5/2x+30)+(7/2x+40)+(9/2x+10)+(5/2x+20)=360 26/2x + 100 = 360 13x = 260 x = 20.   To solve for ∠C, plug x back in:   ∠C = 9/2x+10 = 9/2*20+10 = 100

3 0
3 years ago
Which event is certain?
igomit [66]

Answer:

it c

Step-by-step explanation:

hope it help

5 0
3 years ago
Other questions:
  • How do I find the value of theta given to area of the sector and the radius
    14·1 answer
  • Cell Phone Company A charges $20 each month plus $0.03 per text. Cell Phone Company B charges $5 each month plus $0.07 per text.
    8·1 answer
  • Express in simplified exponential notation.<br> x3 • x5 =
    12·2 answers
  • Help me answer this thanks
    7·2 answers
  • 2. 3 qt =?L<br>15lb=?kg<br>7L=?qt​
    9·2 answers
  • John, Mary, and Carol are putting a puzzle together. John has found 35 pieces and Mary has found 28. If there are 100 pieces in
    9·2 answers
  • A circular garden has a circumference of
    6·1 answer
  • Show your work.
    14·2 answers
  • Part 3: Write the equation of and graph an ellipse.
    6·1 answer
  • Priscilla can make 4 bracelets in 13 minutes. At this rate, how many bracelets can she make in 26 minutes?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!