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Westkost [7]
3 years ago
13

En salón de clases hay 30 alumnos; el 40% son hombres y el 60% son mujeres ¿Cuántos hombres y mujeres hay en el salón de clases?

Mathematics
1 answer:
vodomira [7]3 years ago
4 0

There are 30 students in the classroom; 40% are men and 60% are women. How many men and women are in the classroom?

40/100 = 2/5   60/100 = 3/5   30 ÷ 5 = 6   3 × 6 = 18 so 18 are women 2 × 6 = 12

so there are 12 men.

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Exercise questions
balu736 [363]

Answer:

2.

a)1

b)1

c)1

Step-by-step explanation:

There's some identity trigonometric equation, which are valid for all angles,and they doesn't depends on the measure of angle!

some of em are follows:. (x is the given angle)

  • sin(x)^2+cos(x)^2=1
  • cosec(x)^2=1+cot(x)^2
  • sec(x)^2=1+tan(x)^2

You can remember these identity, its gonna help alot.

now back to question,. {x is representing angles)

for (a) sin(x)^2+cos(x)^2=1, this is true for all x, dat means that for all the angle given in question(for ,15°,30°,45°,60° and 120°),we will get 1

for(b) ,

cosec(x)^2=1+cot(x)^2

i.e, cosec(x)^2-cot(x)^2=1, again this is true for all x dat means that for all the angle given in question ,we will get 1

for (c),

sec(x)^2=1+tan(x)^2

i.e,sec(x)^2-tan(x)^2=1,again this is true for all x, dat means that for all the angle given in question ,we will get 1

✌️:)

3 0
3 years ago
Mason says that (12x + 4) - (-3x + 5) and 15x - 1 are equivalent. Is he correct? Explain
julia-pushkina [17]

Answer:

Yes

Step-by-step explanation:

12x minus -3x is the same as adding two positives. That gives us 15x. 4 - 5 is -1. Putting the two simplified parts of the expression together, we get 15x - 1. Mason is correct.

6 0
3 years ago
Read 2 more answers
: 11 = 1 /3 : 6<br><br> plz help
GenaCL600 [577]
<h3>Let the number be x</h3>

x:11 =  \frac{1}{3} :6

  • Divide the numbers

\frac{x}{11}  =  \frac{ \frac{1}{3} }{6}  \\  \frac{x}{11}  =  \frac{1}{18}

  • Multiply all terms by the same value to eliminate fraction denominators

11 \times  \frac{x}{11}  = 11 \times  \frac{1}{18}

  • Cancel multiplied terms that are in the denominator

x = 11 \times  \frac{1}{18}

  • Multiply the numbers

x =  \frac{11}{18}

<h2>Solved ✔︎</h2>

3 0
3 years ago
Read 2 more answers
Which value of x is in the solution set of the following inequality. -3x +5 &gt;7
Vadim26 [7]
I’m not sure if this was a typo, but A and B are the same answer. A and B are correct, because when you solve this the answer has to be anything less than -0.6.
8 0
3 years ago
What is the greatest number of tens in 384
elena-s [515]

Answer:

30 tens

90 is the greatest number of tens

6 0
3 years ago
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