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3 years ago

HELPPPPP ME PLEASE!!!!

Mathematics

2 answers:

Rufina [12.5K]3 years ago

6 0

Answer:

this is tough

Step-by-step explanation:

Rzqust [24]3 years ago

5 0

Answer:

100 degrees

Step-by-step explanation:

The three angles inside a triangle always add up to 180

so, 180-43-57 is 80

But that's the angle inside the triangle. notice that that angle (ACD) and BCA make a straight line. That means they add up to 180. Therefore, 180-80=100 degrees.

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PLZ HELP ME <br> I appreciate any help, especially if you can show me how you got the answer

Arte-miy333 [17]

Answer:

Step-by-step explanation:

Since this is an indererminate form, use L'Hopital

d(sint)/dt = cos(t)

d[ln(2e^t) - 1] = (2e^t)/[2e^t - 1]

As t --> 0,

cos(0) = 1

(2e^t)/[2e^t - 1] = 2

1/2 is the limit

5 0

3 years ago

Use the graph of the function to find f(-2)

lesya692 [45]

Answer:

Answer D: f(-2) = 2

Step-by-step explanation:

To evaluate f(-2) we need to find what is the y-value that the graph shows for the x-value "-2".

To find such, we look for the value x = -2 on the horizontal (x) axis (located two units to the left of the origin of coordinates (0,0)), and from there, we investigate at what y-value (value on the vertical y-axis) a line that follows the vertical grid passing through x = -2, intercepts the graph of the function.

That is pictured with a red dot in the attached image. Notice that the y-value at which such intersection occurs is y = 2.

Therefore f(-2) = 2

4 0

3 years ago

A ball is dropped from a cliff that is 135 m high.

Anna [14]

Answer:

113 feet

Step-by-step explanation:

I will assume you meant h = -4.9t^2 + 135; "t2" is incorrect.

To answer this question, to find the height of the ball after 2.1 seconds, substitute 2.1 for t in the above equation:

h(2.1) = -4.9(2.1)^2 + 135. This becomes -21.6 + 135, or 113.4.

The closest result to the height of the ball after 2.1 seconds is 113 feet.

4 0

2 years ago

1) In 2010, the continent of South America had a

Westkost [7]

Answer:

4x109

Step-by-step explanation: 4x109=436 and that is the closest to that number.

3 0

3 years ago

Find derivative: f(u) = arctan(u/(1+u)

VikaD [51]

F ` ( x ) =
$\frac{1}{1+ \frac{u ^{2} }{(1+u) ^{2} } } * ( \frac{u}{1+u})`= \\ = \frac{1}{ \frac{(1+u) ^{2}+ u^{2} }{(1+u) ^{2} } } * \frac{(u)`(1+u)-(1+u)` u}{(1+u) ^{2} } = \\ = \frac{(1+u) ^{2} }{(1+u) ^{2}+u ^{2} } * \frac{1+u-u}{(1+u) ^{2} } = \\ = \frac{1}{1+2u+2u ^{2} }$

6 0

3 years ago