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devlian [24]
3 years ago
10

Find the accelartion:

Mathematics
1 answer:
bagirrra123 [75]3 years ago
6 0
A. Man runs (> 2.2 m/s is running) uphill at 6 m/s (???) and decelerates to walking at 2.0 m/s near the top, all in 5 minutes, assuming he ran in a straight line.

Acceleration is (final velocity-initial velocity (m/s) )/time (s)
=(2-6)/(5*60)=-4/300= -0.0133 m/s^2

B. Car goes east for 300 km in 45 min.
Velocity 
=300*1000 m  / (45*60) s  due east
=300000/2700 m/s due east
=111.1 m/s due east
(is it an airplane?  A cesna cruises at 63 m/s  (226 km/h) )
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Simplify completely 12 times x to the third power minus 4 times x to the 2nd power plus 8 times x all over negative 2 times x.
Rudik [331]

(12x^3-4x^2+8x)/2x

Just divide all the coefficients by -2 and take away an x from all of them.

It is the second one from the top.


7 0
3 years ago
X + y = 6<br> X - 4y = 1<br> Find the solution of the system of equations by using<br> elimination.
Effectus [21]

Answer:

x=5, y=1

Step-by-step explanation:

First, you need to multiply both sides of the second equation by -1 so that you can proceed the elimination process. Like this...

x + y = 6

x - 4y = 1

x + y = 6

-x + 4y =- 1

Now you can eliminate the x variable by addition process. It becomes like this...

x + y = 6

-x + 4y =- 1

5y=5

y = 1

Now, let's proceed substitution process. You can substitute the value of y into any equation that you want. I want to put the value of y into the equation of x + y = 6 .

When y=1, substitute into x + y = 6

x + 1 = 6

x = 6-1

x = 5

Hooray! Now you have the value of x and y.

x= 1 and y=5.

I hope you will understand my explanation. Bye!

4 0
4 years ago
Solve for x please <br><br> 1/6x=10
ElenaW [278]

Answer:

x=60

Step-by-step explanation:

1/6x=10

multiply both sides by 6 to get x

x=60

6 0
3 years ago
Read 2 more answers
What is (4.81 times 10 Superscript 16 Baseline) (1.1 times 10 Superscript negative 4 Baseline) in scientific notation?
viktelen [127]

Answer:

5.291 times 10 Superscript 12

Step-by-step explanation:

(4.81 × 10¹⁶)(1.1 × 10^-4)

(4.81 × 1.1) × 10^(16-4)

5.291 × 10¹²

3 0
3 years ago
Read 2 more answers
Please solve this <br> Need help
salantis [7]

Answer:

See answer below

Step-by-step explanation:

There is NO elementary function that gives the antiderivative of e^(-x^2)

This expression in fact is called the Gaussian integral, since it gives the Gaussian bell curve.

Its integration is done by numerical methods, it is widely used in Statistics, and there are tables to calculate definite integrals associated with probability distributions.

7 0
3 years ago
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