3 years ago

PLS HELP I WILL GIVE BRAINLIEST

Mathematics

1 answer:

Montano1993 [528]3 years ago

7 0

sin(8x) cos(3x) - cos(8x) sin(3x)

sin(8x - 3x) = sin(5x)

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Tamara has a cell phone plan that charges $0.07 per minute plus a monthly fee of $19.00. budgets $29.50 per month for total cell

natima [27]

The answer is the letter A! I hope this helps

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3 years ago

With a headwind a plane traveled 128 km in 2h. The return trip with a tail wind took 24 min less. Find the air speed of the plan

sertanlavr [38]

Based on the information given, it can be noted that the air speed that the plane has will be 71.1 km per hour.

The number of hours used for the return trip will be:

= 2 hours - 24 minutes.

= 1 hour 36 minutes.

= 1.6 hours.

Therefore, the speed of the air plane will be:

= (128 + 128) / (2 + 1.6)

= 256/3.6.

= 71.1 km per hour.

Learn more about speed on:

brainly.com/question/25860159

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3 years ago

A submarine dives below the surface, heading downward in nine moves. If each move downward was 180

Maslowich

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3 years ago

X-5=17??????????????????

yKpoI14uk [10]

Answer:

x=21

Step-by-step explanation:

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3 years ago

How do you find the average rate of change for f(x)=9-x^2 between two points: x=0 to x=3?

ICE Princess25 [194]

Answer:

The average rate of change is -3.

Step-by-step explanation:

We are given the function:

$f(x)=9-x^2$

And we want to find the average rate of change from x = 0 to x = 3.

In other words, we will compute the function at the two endpoints, and then find the slope of the line that crosses the two points.

For our first endpoint at x = 0, our function evaluates to:

$f(0)=9-(0)^2=9$

So, our first point is (0, 9).

For our second endpoint at x = 3, our function evaluates to :

$f(x)=9-(3)^2=0$

So, our second point is (3, 0).

Then by the slope formula, our average rate of change will be:

$\displaystyle m=\frac{0-9}{3-0}=\frac{-9}{3}=-3$

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3 years ago