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3 years ago

General term for the sequence m, -m,m,-m.....

Mathematics

1 answer:

Lelu [443]3 years ago

4 0

I'm assuming it is -m, +m, -m, +m etc..

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Need help with this test plz n thanks

Nastasia [14]

1+1 = 2
So if it is 2 then 2+6 = 8
I hope this helped love

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2 years ago

Help&EXPLAIN <br><br> Don’t use for points or will be reported and I’ll take the points back

ella [17]

Answer:

x = 60°

Step-by-step explanation:

since, the triangles are complementary the sum of their measures will be 90°

now,

=》30° + x = 90°

=》x = 90° - 30°

=》x = 60°

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2 years ago

How do you find the slope of a line from a graph that does not go through the origin?

Thepotemich [5.8K]

You find it the same way just with those new coordinates

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2 years ago

3. 1 + sec2x sin2x = sec2x

IgorLugansk [536]

Answer:

Answer is on pic

Step-by-step explanation:

I hope it's helpful!

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2 years ago

A car is moving with a velocity (3.0 m/s) x̂ + (1.0 m/s) ŷ and 3.0 seconds later its velocity is (6.0 m/s) x̂ - (3.0 m/s) ŷ. Wha

Mars2501 [29]

Here we know that the initial velocity of the car is given by:

$V_i=(3.0\hat x+1.0\hat y)m/s$

And the final velocity of the car is given by:

$V_f=(6.0\hat x-3.0\hat y)m/s$

It took 3 seconds to attain the final velocity, so we have $t=3 s$

Therefore, the acceleration can be obtained by:

$V_f-V_i=a\times t$

$a=\frac{V_f-V_i}{t}$

Plugging the values of the initial, final velocity and the time, we get:

$a= \frac{(6\hat x-3\hat y)-(3 \hat x+1 \hat y)}{3} =\frac{6\hat x-3 \hat y -3 \hat x-1 \hat y}{3} =\frac{3 \hat x-4 \hat y}{3}$

So the acceleration of the car is given by:

$a=\frac{3 \hat x}{3} -\frac{4 \hat y}{3} =1 \hat x- \frac{4}{3} \hat y$

Now we need to find the direction of the average acceleration of the car:

$\theta=tan^{-1} \frac{y}{x}$

Here, x and y are the coefficients of the 'x' and 'y' components of the vector:

$\theta=tan^{-1}(\frac{-\frac{4}{3} }{1} )=tan^{-1}(\frac{-4}{3}) =-53.13^\circ$

Therefore, the direction of the average acceleration of the car is $-53.13^\circ$ .

8 0

3 years ago