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3 years ago

What is the meaning of an adjacent interior angle?

Mathematics

1 answer:

Neporo4naja [7]3 years ago

7 0

An angle next to another interior angle

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Two trains 500 miles apart accidentally are on the same track heading toward each other. The passenger train is traveling 80 mph

Natalka [10]

Answer:

2 miles

Step-by-step explanation:

Their combined speed (speed of closure) is 80 mph + 40 mph = 120 mph.

120 mi/h = 120 mi/(60 min) = 2 mi/min

The distance between the trains at the 1-minute mark is ...

(1 min) · (2 mi/min) = 2 mi

They were warned when two miles apart.

3 0

3 years ago

Is 9/15 irrational??

Mariana [72]

No because irrational cant be a simple fraction and 9/15

is 0.6

so... it is not irrational

4 0

2 years ago

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Evaluate the expression, if x=4, y=9, and z=7. x(y + z - 3 squared)

atroni [7]

4(9+7-9)
the nines cancel
4*7 =28

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3 years ago

Water pours into a tank at the rate of 2000 cm3/min. The tank is cylindrical with radius 2 meters. How fast is the height of wat

Gennadij [26K]

Volume of water in the tank:

$V=\pi (2\,\mathrm m)^2h=\pi(200\,\mathrm{cm})^2h$

Differentiate both sides with respect to time t :

$\dfrac{\mathrm dV}{\mathrm dt}=\pi(200\,\mathrm{cm})^2\dfrac{\mathrm dh}{\mathrm dt}$

V changes at a rate of 2000 cc/min (cubic cm per minute); use this to solve for dh/dt :

$2000\dfrac{\mathrm{cm}^3}{\rm min}=\pi(40,000\,\mathrm{cm}^2)\dfrac{\mathrm dh}{\mathrm dt}$

$\dfrac{\mathrm dh}{\mathrm dt}=\dfrac{2000}{40,000\pi}\dfrac{\rm cm}{\rm min}=\dfrac1{20\pi}\dfrac{\rm cm}{\rm min}$

(The question asks how the height changes at the exact moment the height is 50 cm, but this info is a red herring because the rate of change is constant.)

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3 years ago

ILL GIVE BRAINLY HELP 20 POINTS!!!

sesenic [268]

Answer:

13.6

Step-by-step explanation:

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3 years ago

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