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
weeeeeb [17]
3 years ago
9

what digit out of 1, 3,5, and 9 would complete the second factor so that the product will have 2 decimal places for 7.2 x 4.6___

_
Mathematics
1 answer:
umka2103 [35]3 years ago
5 0

When we have multiple possibilities for a number, we can replace it with a letter (or variable) -- here, we can put the second decimal place for 4.6_ as y. Therefore, when we multiply the two numbers, 7.2*4.6y=

        7.2

    x  4.6y

__________

        7.2*y

       4.320

     28.800  

Therefore, if we add 28.8 and 4.32 up, we are at 33.12. Aligning the zeros, it is clear that if the last digit of 7.2*y is not 0, this equation will end up having more than 2 decimal places. Therefore, using a little guess and check, we have 7.2*1=7.2, 7.2*3=21.6, 7.2*5=36.0, and 7.2*9=648. Therefore, 5 is our answer.


Feel free to ask further questions, and Happy Holidays!

You might be interested in
Simplify: 10x-6(7+x)
Basile [38]

Answer:

4 x − 4 2

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Levi's school is at the corner of the high streetand second avenue. The corner forms a right angle. How ight he describe the way
Varvara68 [4.7K]

Answer:

he can bring phone to school and show route in Google map

4 0
3 years ago
Help me plsssssssssssssss
Monica [59]

Step-by-step explanation:

This figure has 1 line of symmetry

4 0
3 years ago
Here are some summary statistics about the number of accounts that follow some bands on social media. mean: 15,976 followers med
Lelu [443]

Answer:

what kind of math is this

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
A cable installer charges $40. an hour plus a $50.00 service charge. Figure the function c(h) = ?
Hitman42 [59]

Answer:

c(h) = 40*h + 50

Step-by-step explanation:

Let h be the variable that represents the number of hours

As the cable operator charges $40.00 for an hour so for h hours, the expression will be 40*h

And  

Lastly, he has to charge $50.00 must as service charge,

As the number of hours is variable here so the function will be in terms of hours.

So the resulting function will be:

c(h) = 40*h + 50

3 0
3 years ago
Other questions:
  • Help me with 22 and 23
    7·1 answer
  • What is 7 times 8<br> equal
    12·2 answers
  • What is the length of the diagonal?
    6·2 answers
  • If 9x+2y^2−3z^2=132 and 9y−2y^2+3z^2=867, then x+y =
    8·1 answer
  • Find the value of z?​
    6·2 answers
  • Which undefined term is used to define an angle?<br><br>line<br>plane<br>point<br>ray
    15·1 answer
  • Based on the attendance at past picnics, Luis expects 95% of the students in his class to attend this years picnic. If 120 stude
    15·1 answer
  • Christina says the graph for the inequality r &lt; -5 will be the same as the graph for the inequality -5 &gt; r. Do you agree o
    7·1 answer
  • Complete the equation describing how
    5·1 answer
  • Help me please. How to prove this ?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!