4 years ago

Of 125 students in 5th grade, 3/5 of them have a mobile phone. How many students do not have a mobile phone?

Mathematics

2 answers:

Annette [7]4 years ago

5 0

Answer:75

Step-by-step explanation:125÷ 5=25

25*3=75

Cerrena [4.2K]4 years ago

5 0

Answer:

It should be 75.

Step-by-step explanation:

You would first take 3/5 and make it into a decimal which would be 0.6

Next you would take 0.6 and multiply it by 125 and get 75.

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Find an equation in standard form for the hyperbola with vertices at (0, ±10) and asymptotes at y = ± five divided by six times

blagie [28]

Refer to the diagram shown below.

In the diagram, the two vertices are located at (0, a) and (0, -a).
The equation for the parabola is
$\frac{y^{2}}{a^{2}} - \frac{x^{2}}{b^{2}} =1$
The asymptotes have the equations
$y= \pm \frac{a}{b} x$

For the given problem,
The vertices are located at (0, +/-10).
Therefore a = 10.

The asymptotes are
$y = \pm \frac{5}{6} x$
Therefore
$\frac{a}{b} = \frac{10}{b} = \frac{5}{6} \\\\ 5b = 60 \\\\ b =12$

Answer:
The equation of the parabola is
$\frac{y^{2}}{100} - \frac{x^{2}}{144} =1$