What is the scientific notation of 14,200,000

$(8-9xy+3x^2-5x)-(3x^2-2x+5xy-7)\\\\=8-9xy+3x^2-5x-(3x^2)-(-2x)-(5xy)-(-7)\\\\=8-9xy+3x^2-5x-3x^2+2x-5xy+7\\\\=(8+7)+(-9xy-5xy)+(3x^2-3x^2)+(-5x+2x)\\\\=15-14xy+0-3x\\\\=-3x-14xy+15$

6 0

3 years ago

The velocity of a turtle is recorded at 1 minute intervals (in meters per second). Use the right-endpoint approximation to estim

aliina [53]

Answer:

The total distance that the turtle traveled during the 5 seconds recorded is $Distance \:traveled\approx 3.838\:\frac{m}{s}$

Step-by-step explanation:

To estimate distance traveled of an object moving in a straight line over a period of time, from discrete data on the velocity of the object, we use a Riemann Sum. If we have a table of values

$\left\begin{array}{ccccccc}time\:=\:t_i&t_0=0&t_1&t_2&...&t_n\\velocity\:=\:v(t_i)&v(t_0)&v(t_1)&v(t_2)&...&v(t_n)\end{array}\right$

where $\Delta t=t_i-t_{i-1}$ , then we can approximate the displacement on the interval $[t_{i-1},t_i]$ by $v(t_{i}) \times\Delta t$ .

Therefore the distance traveled of the object over the time interval $[0,t_n]$ can be approximated by

$Distance \:traveled\approx |v(t_1)|\Delta t+|v(t_2)|\Delta t+...+|v(t_n)|\Delta t$

This is the right endpoint approximation.

We are given a table of values for <em>v(t)</em>

$\left\begin{array}{cccccccc}t(sec)&0&1&2&3&4&5\\v(t)&0.078&0.83&0.75&0.98&0.853&0.425\end{array}\right$

Applying the right endpoint approximation formula we get,

$\Delta t = 1\sec$

$Distance \:traveled\approx |v(t_1)|\Delta t+|v(t_2)|\Delta t+|v(t_3)|\Delta t+|v(t_4)|\Delta t+|v(t_5)|\Delta t\\\\Distance \:traveled\approx 0.83(1)+0.75(1)+0.98(1)+0.853(1)+0.425(1)\\\\Distance \:traveled\approx 3.838\:\frac{m}{s}$

The total distance that the turtle traveled during the 5 seconds recorded is $Distance \:traveled\approx 3.838\:\frac{m}{s}$

4 0

3 years ago

HELP! WILL GIVE BRAINLIEST!

Viefleur [7K]

p+(p*(33/100))+50

It doesn't really need the parentheses around the fraction. I just did that to show you to multiply p by the fraction as a whole instead of just the numerator. It does however need the parentheses around the 'p times the fraction' bit. Good luck. Hope this helps. Sorry if it doesn't.

8 0

4 years ago