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Assoli18 [71]
3 years ago
7

there are 28 students in a mathematics class. if 1/4 of the students are called to the guidance office,1/3 of the remaining stud

ents are called to the nurse, and, finally, 1/2 of those left go to the library, how many students remain in the classroom
Mathematics
2 answers:
serg [7]3 years ago
8 0
28/4 = 7 students to guidance office/ 21 left

21/3 = 7 to nurse/ 14 left

14/2 = 7 to library/ 7 left

7 students left in the classroom
grigory [225]3 years ago
6 0
It should be about 24.7
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Solve for x <br> 5(x-10)=30-15x
timofeeve [1]

Answer:

solution :

    x = 4

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    5*(x-10)-(30-15*x)=0

Step by step solution :

Step  1  :

Equation at the end of step  1  :

 5 • (x - 10) -  (30 - 15x)  = 0

Step  2  :

Step  3  :

Pulling out like terms :

3.1     Pull out like factors :

  20x - 80  =   20 • (x - 4)

Equation at the end of step  3  :

 20 • (x - 4)  = 0

Step  4  :

Equations which are never true :

4.1      Solve :    20   =  0

Step-by-step explanation:

4 0
3 years ago
Which is bigger 11/18 or 5/14
KengaRu [80]

Among the fractions given in this question 11/18 and 5/14,  the largest fraction is: 3/5.

  • Step-by-step explanation:

To find out which fraction is the largest, just divide the numerator by the denominator of the ratio and make the comparisons between them, thus defining which is the largest by decimal places or the largest number.

  • Resolution:

\large \sf \dfrac{11}{18} \rightarrow 11\div18\rightarrow 0{,}61111111111

\large \sf \dfrac{5}{14} \rightarrow 5\div14\rightarrow 0{,}35714285714

  • Conclusion:

We can conclude that the largest fraction, being between 11/18 and 5/14, is 11/18.

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Factor the GCF: −12x4y − 9x3y2 + 3x2y3
monitta
Factor the coefficients:
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-9=(-1)(3^2)
3=3

The greatest common factor (GCF) is 3

Next we find the GCF for the variable x.
x^4
x^3
x^2
The GCF is x^2.

Next GCF for variable y.
y
y^2
y^3
the GCF is y

Therefore the GCF is 3x^2y
To factor this out, we need to divide each term by the GCF,
(3x^2y)(−12x4y/(3x^2y) − 9x3y2/(3x^2y) + 3x2y3/(3x^2y) )
=(3x^2y)(-4x^2-3xy+y^2)     
if we wish, we can factor further:
(3x^2y)(y-4x)(x+y)
3 0
3 years ago
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