2 years ago

10 point to whoever know The CORRECT answer and who knows how to get good explanation

Mathematics

1 answer:

Nonamiya [84]2 years ago

6 0

Answer:

30x^5 y^11 z^6

should be right

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1. Find the exact value of cos (π radians). <br> 2. Find the exact value of sin (π radians)

valkas [14]

Answer:

-1
0

Step-by-step explanation:

1. cos(π) = -1

2. sin(π) = 0

_____

It is useful to memorize the table below.

3 0

3 years ago

A particle moves so that r(t) = ati + b sin atj. Show that the magnitude of the acceleration of the particle is proportional to

ValentinkaMS [17]

Answer:

Step-by-step explanation:

Given

Position of particle is $r(t)=at\hat{i}+b\sin (at)\hat{j}$

i.e. distance from x axis is $b\sin (at)---1$

Distance from y axis at

velocity is given by $v=\frac{\mathrm{d} r}{\mathrm{d} t}$

$v=a\hat{i}+ba\cos (at)\hat{j}$

Similarly acceleration is given by

$a=\frac{\mathrm{d} v}{\mathrm{d} t}$

$a=0\hat{i}-a^2b\sin (at)\hat{j}$

Magnitude of acceleration is $=\sqrt{(-a^2b\sin (at))^2}$

$=a^2b\sin (at)----2$

From 1 and 2 we can see that

Magnitude of acceleration is proportional to distance from x axis

$a\propto distance\ from\ x-axis$

5 0

3 years ago

Read 2 more answers

The measure of 5 of the interior angles of a hexagon are 110, 120, 90, 140, and 125. what is the measure of the smallest exterio

Romashka-Z-Leto [24]

Answer:

A) 40

Step-by-step explanation:

The sum of the interior angles of a regular polygon is:

$(n - 2) \times 180$

For a hexagon, we put n=6

$(6 - 2) \times 180 = 4 \times 180 = 720$

Let x be the 6th interior angle, then

$x + 110 + 120 + 90 + 140 + 125 = 720$

$x + 585 = 720$

$x = 720 - 585 = 135$

The largest interior angle is 140°

Therefore the least exterior angle will be:

$180 - 140 = 40$

The correct choice is A

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2 years ago

A certain car dealership sells economy cars, luxury cars, and sport utility vehicles. The ratio of economy to luxury cars is 3:2

alexira [117]

Answer:

B) 8:9

Step-by-step explanation:

Please refer to the attached image for explanations

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3 years ago

Which expression represents 5/8 pls help I'm doing a test

77julia77 [94]

Answer:

The answer is 5 divided by 8, or answer A.

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2 years ago