3 years ago

10 points and will mark brainliest

Mathematics

1 answer:

PIT_PIT [208]3 years ago

8 0

Answer:

The airplane descends at a rate of 850 feet per minute.

Step-by-step explanation:

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A box contains 2 white, 3 red, and 4 black marbles. you choose two marbles and each are chosen at random. find the probability t

Sunny_sXe [5.5K]

2 black marbles:
$\dfrac{\dbinom20\dbinom30\dbinom42}{\dbinom{2+3+4}2}=\dfrac6{\dbinom92}=\dfrac16$

1 white, 1 black:
$\dfrac{\dbinom21\dbinom30\dbinom41}{\dbinom92}=\dfrac{2\times4}{\dbinom92}=\dfrac29$

1 white, 1 non-black (this means you draw either 2 white, or 1 white and 1 red; we add the events' probabilities because they are disjoint events):
$\dfrac{\dbinom22\dbinom30\dbinom40+\dbinom21\dbinom31\dbinom40}{\dbinom92}=\dfrac{1+2\times3}{\dbinom92}=\dfrac7{36}$

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3 years ago

A wire is first bent into the shape of a rectangle with width 7in and length 9in then the wire is bent and reshaped into a squar

inysia [295]

Answer:

Length of side of square = 8 inch

Step-by-step explanation:

Given:

Length of rectangular wire = 9 inch

Width of rectangular wire = 7 inch

Find:

Length of side of square

Computation:

We know that same wire is used from square

So,

Perimeter of rectangle = Perimeter of square

2[l + b] = 4 x side

2[9 + 7] = 4 x Length of side of square

2[16] = 4 x Length of side of square

32 = 4 x Length of side of square

Length of side of square = 32 / 4

Length of side of square = 8 inch

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3 years ago

What is the equivalent way to write the expression without grouping symbols?

Dimas [21]

The correct answer is 6(2 - 3x) = 12 - 18x

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The following examples illustrate the inverse property of addition. Study the examples, then choose the statement that best desc

Ede4ka [16]

-a

That is the answer

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Hello There,

The Answer Would Be Yes Beacose It Will Reduce The Total Amount <span>Beacose If You Pay Upfront It Will BE Lower </span>

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3 years ago