3 years ago

Rafaela is a physical education teacher and has 25 girls and 35 boys in her class.

Mathematics

2 answers:

natali 33 [55]3 years ago

7 0

5 boys will be on each team. (7 teams)

enot [183]3 years ago

3 0

Answer:

7 boys

Step-by-step explanation:

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Solve for x and y 4x, 15 X + 12, 3y (it's for a parallelogram)

yan [13]

Answer:

done on peace of paper

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2 years ago

Write an equation for an ellipse centered at the origin, which has foci at (0,\pm\sqrt{63})(0,± 63 )left parenthesis, 0, comma

steposvetlana [31]

Answer:

$\frac{x^{2} }{4312 } + \frac{y^{2} }{8281 }$

Step-by-step explanation:

Since the foci are at(0,±c) = (0,±63) and vertices (0,±a) = (0,±91), the major axis is the y- axis. So, we have the equation in the form (with center at the origin) $\frac{x^{2} }{b^{2} } + \frac{y^{2} }{a^{2} }$ .

We find the co-vertices b from b = ±√(a² - c²) where a = 91 and c = 63

b = ±√(a² - c²)

= ±√(91² - 63²)

= ±√(8281 - 3969)

= ±√4312

= ±14√22

So the equation is

$\frac{x^{2} }{(14\sqrt{22}) ^{2} } + \frac{y^{2} }{91^{2} } = \frac{x^{2} }{4312 } + \frac{y^{2} }{8281 }$

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3 years ago

Find the distance between these points. C(0, 4), T(-6, -3) √(37) √(85) √(109)

Leona [35]

√85≈9.21954445

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