Question

There are 120 seats in the cinema. Eighth grades come with the same number of students. If three grades come, there will be 54 free seats left. How many seats will be left if four grades come?

188

likes
942 views

Answer to a math question There are 120 seats in the cinema. Eighth grades come with the same number of students. If three grades come, there will be 54 free seats left. How many seats will be left if four grades come?

Expert avatar
Sigrid
4.5
119 Answers
1. Izračunaj broja mjesta zauzetih za 3 razreda: 3x
2. Postavi jednadžbu: 120 - 3x = 54
3. Izračunaj broj učenika u jednom razredu:
3x = 66
x = \frac{66}{3} = 22
4. Izračunaj broj mjesta zauzetih za 4 razreda:
4x = 4 \times 22 = 88
5. Izračunaj broj slobodnih mjesta za 4 razreda:
120 - 88 = 32

Odgovor: Broj učenika u jednom razredu je 22, a broj slobodnih mjesta kada dođe 4 razreda je 32.

Frequently asked questions (FAQs)
Math question: Find the absolute extrema of the function f(x) = x^2 - 3x + 2 on the interval [-2, 4].
+
Math question: What is the scalar product of vector u = (3, -2) and vector v = (-4, 5)?
+
What is the radius of a circle with an equation x^2 + y^2 = 25?
+
New questions in Mathematics
Use the digits of 1,9,2,3 to come up with all the numbers 98 and 95
Calculate the 6th term of PA whose 1st term is 6.5 and the ratio 5
Use the elimination to find the solution to each linear system. X+y=43 2x-y=20
(5-(4-3)*3)-(8+5))
What is the r.p.m. required to drill a 13/16" hole in mild steel if the cutting speed is 100 feet per minute?
Sean must chose a 6- digit PIN number for his online banking account.Each digit can be chosen from 0 to 9. How many different possible PIN numbers can sean chose.
To celebrate the five-year anniversary of a consultancy specializing in information technology, the administrator decided to draw 3 different qualification courses among its 10 employees. Considering that the same employee cannot be drawn more than once, the total number of different ways of drawing among employees is:
By direct proof, how can you prove that “The sum of any three consecutive even integers is always a multiple of 6”.
. What will be the osmotic pressure of a solution that was prepared at 91°F by dissolving 534 grams of aluminum hydroxide in enough water to generate 2.784 ml of solution.
A triangular window has a base of 6 ft. and a height of 7 ft. What is its area?
If X1 and X2 are independent standard normal variables, find P(X1^2 + X2^2 > 2.41)
0.1x8.2
X³-27
Calculate the change in internal energy of a gas that receives 16000 J of heat at constant pressure (1.3 atm) expanding from 0.100 m3 to 0.200 m3. Question 1Answer to. 7050J b. 2125J c. None of the above d. 2828J and. 10295 J
A block slides across the floor with a force of 20N, which has an angle of 30°. The mass of the block is 2kg and the coefficient of friction is 0.1. Calculate the value of all the forces involved in this system and finally the value of the acceleration.
Gender and communication : Answer the question ( 1 paragraph is ok) . Please can you write about women? Compared to your other identities, how much of a role does gender play in your life? And has your own sex/gender offered you privileges or disadvantages? How so?
Beren spent 60% of the money in her piggy bank, and Ceren spent 7% of the money in her piggy bank to buy a joint gift for Deren, totaling 90 TL. In the end, it was observed that the remaining amounts in Ceren and Beren's piggy banks were equal. Therefore, what was the total amount of money that Beren and Ceren had initially? A) 120 B) 130 C) 150 D) 160 E) 180
Hola👋🏻 Toca en "Crear Nueva Tarea" para enviar tu problema de matemáticas. ¡Uno de nuestros expertos comenzará a trabajar en ello de inmediato!
Solve the system of equations by the addition method. 0.01x-0.08y=-0.1 0.2x+0.6y=0.2
(3.1x10^3g^2)/(4.56x10^2g)