2 years ago

According to this diagram, what is tan 62°?

Mathematics

1 answer:

Nuetrik [128]2 years ago

4 0

Ok done. Thank to me:>

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A 500 g model train car traveling at 0.8 m/s collides with a 300 g stationary car. The cars hook up and move off down the track

sdas [7]

Answer:

$0.5ms^{-1}$

Step-by-step explanation:

Let v be the speed after the collision of both the cars.

Now, momentum is given by: mass × velocity, then by equating the total momentum before and after the collision of the two cars, we get

$500{\times}0.8+300{\times}0=(500+300)v$

⇒ $400+0=800v$

⇒ $400=800v$

⇒ $v=0.5ms^{-1}$

Thus, they are moving at the velocity of $0.5ms^{-1}$

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What is the solution to the system of equations y=-3x- 2 and 5x+3y=15

Kruka [31]

Answer:

x=-5.25

y=13.75

Step-by-step explanation:

5x+3(-3x-2)=15

5x+-9x+-6=15

-4x+-6=15

-4x+-6+6=15+6

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2 years ago

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Arada [10]

Answer:

i think its A

Step-by-step explanation:

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2 years ago

A man of height 1.2 meters walk away from a 5-meter lamppost at a speed of 2.8 m/s. Find the rate at which his shadow is increas

Yanka [14]

Let d be initial distance the man is from the lamp.
Let x(t) be length of shadow at time t.
The distance traveled is speed*time or 2.8t.

Now set up a proportion between 2 triangles.
One formed by end of shadow and top/bottom of lamp.
Small one formed by end of shadow and top/bottom of man.

$\frac{d+2.8t+x(t)}{x(t)} = \frac{5}{1.2} \\ \\ x(t) = 0.88t +0.32 d$

Take derivative to find rate that x(t) is increasing.
$\frac{dx}{dt} = 0.88$

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3 years ago

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A. Because your unknown is how many ounces 200 pennies are. Hope I helped!! Math can be tricky sometimes!!

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