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san4es73 [151]
3 years ago
12

You are ima room with other students and are asked to get in groups of 3. When finished, there are 21 groups of 3. How manny stu

dents are in the room?
Mathematics
2 answers:
kap26 [50]3 years ago
7 0

Answer:

63

Step-by-step explanation:

21 goups of 3 students each.

21 * 3 = 69

Answer: There are 63 students.

ivolga24 [154]3 years ago
6 0

There are 63 students in the room, this is because 21 time 3 gives you 63.

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¿Se puede afirmar que América es un conti-<br> nente poco poblado? ¿Por qué?
notka56 [123]

Answer:

El continente que se considera poco poblado debido a que su población ocupa menos de la mitad de su territorio es AMÉRICA.

Aunque no lo pareciera tenemos que el continente americano es considerado como poco poblado, pero esto es por la distribución de las sociedades que por falta de población.

La distribución de los pueblos americanos es bastante ortodoxa y esto ha hecho que las poblaciones se concentren en sitios y que ocupen menos territorio en el continente. Ademas, hay que tomar en cuenta que existe muchos territorios naturales que no se pueden poblar por ejemplo la amazonia.

Step-by-step explanation:

7 0
2 years ago
Would you be able to help me with this question I don't really understand
il63 [147K]

Okay, here we have this:

Considering the provided information, we are going to identify wich equation applies, so we obtain the following:

x+19=2x

Where x represents the uknown number. Then finally we obtain that the correct equation is the third one.

Now, let's find the missing number solving the equation:

\begin{gathered} x+19=2x \\ 19=2x-x \\ 19=x \end{gathered}

Finally we obtain that the number is equal to 19.

6 0
1 year ago
Hi again, need help on this please, This is for my End-Of-Year Test, help!
allsm [11]
The correct answer is the first one.

5 x 100 is correct.
9 x 1 is correct because the 9 is in the ones section, not the tens.
3 x 1/10 is correct because it is equal to 0.3.
7 x 1/1000 is correct because it is equal to 0.007.

Hope this helped! You’re welcome
4 0
3 years ago
Consider an arbitrary ellipse x 2 a 2 + y 2 b 2 = 1. (Assume a, b &gt; 0.) (a) Find a parametrization of the ellipse using the d
uysha [10]

Answer:

α(t) = (-a*Sin(t), b*Cos (t))    where t ∈ [0, 2π]

Step-by-step explanation:

Given an arbitrary ellipse (x²/a²) + (y²/b²) = 1       (a, b > 0)

The parametrization can be as follows

x = -a*Sin(t)

y = b*Cos (t)

then

α(t) = (-a*Sin(t), b*Cos (t))    where t ∈ [0, 2π]

If  t = 0

α(0) = (-a*Sin(0), b*Cos (0)) = (0, b)

If  t = π/2

α(π/2) = (-a*Sin(π/2), b*Cos (π/2)) = (-a, 0)

If  t = π

α(π) = (-a*Sin(π), b*Cos (π)) = (0, -b)

If  t = 3π/2

α(3π/2) = (-a*Sin(3π/2), b*Cos (3π/2)) = (a, 0)

If  t = 2π

α(2π) = (-a*Sin(2π), b*Cos (2π)) = (0, b)

We can see the sketch in the pic.

7 0
3 years ago
Read 2 more answers
What is the value of (f-3)?
almond37 [142]

Simply substitute the value of

3

given. In other words,

f

(

3

)

is the function of

f

(

x

)

, however, in this case,

x

is

3

f

(

3

)

=

3

(

3

)

−

4

Distribute

3

through the parenthesis

f

(

3

)

=

9

−

4

Simplify

f

(

3

)

=

5

8 0
3 years ago
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