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
Vlad1618 [11]
2 years ago
10

The ratio of the number of math books to the number of comic books on a shelf is 7:3. There are 21 comic books on the shelf. Fin

d the number of math books on the shelf.
Mathematics
2 answers:
Sauron [17]2 years ago
7 0

Answer:

There are 49 math books on the shelf.

Step-by-step explanation:

math books : comic books

       7           :         3

       x           :        21

21÷3=7

7*7=49

x=49

NNADVOKAT [17]2 years ago
3 0

Answer:

49

Step-by-step explanation:

Let the number of math books on the shelf be x.

7:3\\x:21

Cross multiply the ratio and solve for x.

3x=7 \times 21\\3x=147\\x=49

There are 49 math books on the shelf.

You might be interested in
What goes in the question marks?
IgorC [24]

By using the properties of parallel lines, it can be inferred that -

Corrosponding angle goes in the place of first question mark and substitution property of equality goes in the place of second question mark.

What are parallel lines?

Two lines are said to be parallel if on extending them indefinitely, they will never intersect

Transversal is a line that intersects two or more parallel lines

For the first question mark

\angle ASR \cong \angle AVU [Corrosponding angle]

For the second question mark

m\angle AVU = 90^{\circ} [Substitution property of equality]

To learn more about parallel lines, refer to the link-

brainly.com/question/26961508

#SPJ1

5 0
1 year ago
Use the prism to answer the question. S in 2 in What is the surface area of the prism? O A 136 in2 B 192 in2 C 240 in2 D272 in2​
Vanyuwa [196]
Is there supposed to be a picture?? I see nothing im sorry. But i can help u cause this is just surface area, quite easy.
I will just give you the formula for surface area of a RECTANGULAR prism:
2 ( width x length + height x length + height x width) or just : 2 (wl + hl + hw)

Have a nice day
6 0
2 years ago
Read 2 more answers
Um I’m kinda confused and I need some help
mel-nik [20]

Answer:

with what

Step-by-step explanation:

what do you need help with if there was photo we can't see it

8 0
2 years ago
A+restaurant+bill+before+tax+is+$15. 50. +if+the+sales+tax+is+8%+and+a+15%+tip+is+added,+what+is+the+total+cost+of+the+meal?
ZanzabumX [31]

Answer:

$19.07

Step-by-step explanation:

Look at image above...

7 0
2 years ago
Paul travel to the lake and back. The trip took 3 hours and the trip back took 4 hours He averaged 10 mph faster on the trip the
ollegr [7]

Answer:

  40 mph

Step-by-step explanation:

We assume "outbound" refers to the trip <em>to the lake</em>. The ratio of speeds is inversely proportional to the ratio of times, so ...

  outbound speed : inbound speed = 4 : 3

These differ by one ratio unit, so that one ratio unit corresponds to the speed difference of 10 mph. Then the 4 ratio units of outbound speed will correspond to ...

  4×10 mph = 40 mph

Paul's average speed on the outbound trip was 40 mph.

___

The distance to the lake was 120 mi.

4 0
3 years ago
Read 2 more answers
Other questions:
  • HELP ME PLZZZZZZZ WHICH OF THE FOLLOWING STATEMENT <br> S ABOUT RATIONAL NUMBERS IS NOT CORRECT
    12·1 answer
  • A triangle has side lengths of (2.4b+3.1)(2.4b+3.1) centimeters, (5.9b-9.7)(5.9b−9.7) centimeters, and (5.9c-5.3)(5.9c−5.3) cent
    12·1 answer
  • To convert 2.5 hours into minutes, which ratio could you multiply by? Remember that 1 hour = 60 minutes.
    8·1 answer
  • Lim <br> θ→0 <br> cos(7θ) − 1/sin(5θ)
    13·1 answer
  • Solve <br> - 5 3/4 - 3 1/2 = ???
    14·2 answers
  • Select all of the rational numbers. (there can be more than one)
    14·2 answers
  • Simplify following the order of operations
    9·2 answers
  • The function defined by d = 50+ 3121 - 1612 gives the height in feet of a cannonball t seconds after the ball leaves the cannon.
    12·1 answer
  • Of the last 14 contestants on a game show, 7 qualified for the bonus round. Considering this data, how many of the next 10 conte
    13·1 answer
  • Calculate the measure of the major arc MPN.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!