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Assoli18 [71]
3 years ago
9

In a school auditorium, the number of chairs in a row is the same as the number of rows of chairs. There are 7033 students in th

e school. If we know that less than 31 chairs were empty, how many chairs were empty after all the students sat down?
Mathematics
1 answer:
mafiozo [28]3 years ago
3 0

Same number of rows to chairs in a row would form a square.

Use the total number of students as the area

Find the number or rows by taking the square root of student:

The square root of 7033 is 83.86

Round up to 84

Total seats would be rows x seats per row:

84 x 84 = 7,056 total seats

7056 seats - 7033 students = 23 empty seats

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Akimi4 [234]

Answer:

She wrapped 5 presents

Step-by-step explanation:

She used 2cm to wrap each present

8cm = 4x

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divide by 4

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Subtract the cube root of the product of x and 3y from the square of the sum of a and b.
rosijanka [135]

Answer:

a^2 + b^2 + 2ab - (3xy)^1/3

Step-by-step explanation:

Here we want to make a subtraction

Cube root of the product of x and 3y

x * 3y = 3xy

Cube root of this;

(3xy)^1/3

The sum of a and b is (a + b)

Square of this sum;

(a + b)^2 = a^2 + 2ab + b^2

Now, subtract the cube root

we have;

a^2 + b^2 + 2ab - (3xy)^1/3

7 0
2 years ago
ASAP! GIVING BRAINLIEST! Please read the question THEN answer CORRECTLY! NO guessing. Show your work OR give an explaination.
erma4kov [3.2K]

Answer:

y =  x² - 8x + 17

Step-by-step explanation:

Recall this formula:

y = a(x-h)² + k

Original equation was y = x², which in this form looks like

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y = (x-h)² + k

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y = (x - 4)² + 1

y = x^2- 8x + 16+1

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Read 2 more answers
How do u do 389.2÷28 in 5 grade standard algorithm show work
Mashutka [201]

Answer:

  see attached

Step-by-step explanation:

Each digit of the quotient is aligned with the least significant digit of the current dividend. The "current dividend" is that portion of the remaining dividend that is at least 1 and less than 10 times the divisor. The product of the quotient digit and the divisor is subtracted from the "current dividend" to get the remaining dividend.

__

For many folks, the hardest part of this algorithm is determining the appropriate quotient digit, and multiplying that by the divisor. Some teachers teach that you start this process by making a list of the multiples of the divisor:

N . . . 28N

1       28

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3      84

4      112

...

This process can be aided by your number sense.

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3N is N+2N.

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5N is half of 10N.

You can proceed to build the table by adding 28 to each previous value, or by recognizing doubles and halves and other sums.

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