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
jonny [76]
3 years ago
5

780 students stand in rows and columns. each row has an equal number of students and each column has an equal number of students

. if the number of students in each row is 4 more then the number of rows, find the number of students in each row​
Mathematics
1 answer:
Alex73 [517]3 years ago
8 0

Answer:

Step-by-step explanation:

x = number of rows

780=x(x+4)

780=x^{2} +4x

x^{2} +4x-780=0\\(x+26)(x-30)=0\\x=30 \\x\neq -26\\

there are 26 rows and 30 students in each row 26*30=780

You might be interested in
1. What is the factored form of 5x2 - 8x – 4?
Lelechka [254]

Answer:

(5x  + 2)  (x -  2 )

Step-by-step explanation:

5x^2 - 8x – 4

(5x   )  (x    )

We need the middle to be -8   and 4 factors into 4*1  and 2*2

5*2 = 10 -2 = 8

(5x   2)  (x   2 )

Now determine the signs

We need -8 so 5*2 must be negative and the 2*1 must be positive

(5x  + 2)  (x -  2 )

8 0
3 years ago
Read 2 more answers
Show how to make a ten to solve 13 - 7. Write the number sentence
Effectus [21]
The answer is 6 because 13-7 is 6
5 0
4 years ago
Matilda needs at least $112 to buy a new dress. She has already saved $40. She earns $9 an hour babysitting. What would be the e
bonufazy [111]

Answer: 9x+40=112

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
10.507140429 nearest hundredth
rosijanka [135]

Answer:

10.51

Always look to the right of the place you are rounding

so...

if you look at 10.507140429

the 0 after 5 is in the hundredths place

look to the right of 0 and you'll see a 7.

If the number to the right of the place you are supposed to round to is:

5 or greater - round up

less than 5  - round down

Hope this helped

6 0
3 years ago
Booker owns 85 video games.he has 3 shelves to put the games on.each shelf can hold 40 video games.how many more video games doe
8090 [49]
35 more video games on shelf 3
8 0
3 years ago
Read 2 more answers
Other questions:
  • Last year Sarah bought 26 bottles of coke for a birthday party at the price of $1.25 per bottle. This year she paid $35 for the
    9·1 answer
  • If Tommy started work at 7 a.m. and left at 2:45 p.m., how many hours should he record for the day on his time card?
    8·2 answers
  • The perimeter of a square is the product of four and the length of a side. Which of the following function rules could be used t
    8·2 answers
  • Solve the following equation. 36 − 3|x| = 18 A. x = 6 or x = -18 B. x = 6 or x = -6 C. x = 18 or x = -6 D. x = 18 or x = -18
    5·1 answer
  • If your car gets 31 miles per gallon, how much does it cost to drive 380 miles when gasoline costs $2.60 per gallon?
    5·2 answers
  • The cherry mine disaster led to
    7·1 answer
  • Please help me out I know that supplimentary angles have to equal 180 but I have no idea how to solve for x since they didnt giv
    5·2 answers
  • Complete the solution table from left to right for the quadratic function
    13·1 answer
  • Which of the following Best expresses how a bill introduced
    11·1 answer
  • Is 0.7070707070 is an irrational number.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!