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3 years ago

14

josh flips a colored chip that is red on one side and black on the other a total of 20 times. what is the probability of the 21t

h flip resulting in landing on the black side up?

1 answer:

kiruha [24]3 years ago

3 0

As long as the mass of the chip is evenly distributed on each side, whatever times you flip the chip,

The probability will always be 50%

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Solve the system by substitution.<br><br> y=−3x-2<br> -7x+3y=10 <br><br> PLEASE HELP

enyata [817]

Y=-3x-2
subsitute -3x-2 for y
-7x+3(-3x-2)=10
distribute
a(b+c)=ab+ac
3(-3x-2)=-9x-6

-7x-9x-6=10
add like terms
-16x-6=10
add 6
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multiply -1
16x=-16
divide 16
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subsitute
y=-3x-2
y=-3(-1)-2
y=3-2
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x=-1
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(x,y)
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3 years ago

The angle of depression from the top of a cruise ship to the top of a sailboat is 22. Sitting above water, the cruise ship is 23

dusya [7]

Answer:

The distance between the cruise ship and the sail boat is 517 feet.

Step-by-step explanation:

The cruise ship is 236 feet tall, and the sailboat is 236 tall; this means the distance between the top of the cruise ship and the top of the sail boat is

236 feet - 27 feet = 209 feet.

We also know that the angel of depression from the top of the cruise ship to the bottom of the cruise ship is 22°. This forms a right triangle as shown in the figure attached.

Now from trigonometry we get:

$tan \: \theta = \dfrac{209}{d}$

$d= \dfrac{209}{tan\:\theta }$

$\boxed{d=517ft}$

The distance between the cruise ship and the sailboat is 517 feet.

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3 years ago

What is 16,500rounded to the nearest ten thousand

harina [27]

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3 years ago

2 out of every 7 come on a weekend. what percentage of days come on a weekend?

Natasha2012 [34]

Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

Find the length of the hypotenuse of a right triangle with legs measuring 7 cm and 9 cm. Round your answer to the nearest tenth.

DaniilM [7]

Answer:

Hypotenuse = 11.4 cm

Step-by-step explanation:

Hypotenuse ² = opposite ² + adjacent ²

Opposite = 7 cm

Adjacent = 9 cm

Hypotenuse ² = opposite ² + adjacent ²

= 7² + 9²

= 49 + 81

Hypotenuse ² = 130

Hypotenuse = √130

= 11.40

Hypotenuse = 11.4 cm

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2 years ago