3 years ago

Which set of equations has (1, 2) as its solution?

Mathematics

1 answer:

FromTheMoon [43]3 years ago

4 0

A and D... i think but i would rather go with A and C

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Please help ASAP I don’t understand

madreJ [45]

Answer:

88 square inches

Step-by-step explanation:

if the entire square was shaded it would be 14 x 12 (as best as i can see)

the "cut out" or white part of the square is 8 x 10

Entire squre - cutout white part

14 x 12 - 8 x 10

168 - 80

88 sq in

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3 years ago

What is the measure, in degrees, of the missing exterior angle?

lozanna [386]

120

70+50=120
180-120=60
180-60=120

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3 years ago

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Sedbober [7]

24 foot board... I added a picture for the break down

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3 years ago

A tennis tournament has 2n contestants. We want to pair them up for the first round of singles matches. Show that the number of

ddd [48]

There are

$\dbinom{2n}2 = \dfrac{(2n)!}{2! (2n-2)!}$

ways of pairing up any 2 members from the pool of $2n$ contestants. Note that

$(2n)! = 1\times2\times3\times4\times\cdots\times(2n-2)\times(2n-1)\times(2n) = (2n-2)! \times(2n-1) \times(2n)$

so that

$\dbinom{2n}2 = \dfrac{(2n)\times(2n-1)\times(2n-2)!}{2! (2n-2)!} = \boxed{n(2n-1)}$

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2 years ago

Find the product ( x ≠ ? )

dsp73

Answer:

-3

Step-by-step explanation:

if x= -3

the denominator becomes 0 and the fraction becomes undefined.

8 0

3 years ago