All categories

3 years ago

Please someone help me Find the first derivative of cos2(π/4)

Mathematics

2 answers:

Komok [63]3 years ago

4 0

Exact form: (\πcos(2))/(4)

Decimal Form: − 0.32684096

brainliest or a thank you please :)) <3

gtnhenbr [62]3 years ago

3 0

Answer: Exact form: (\πcos(2))/(4)

Decimal Form: − 0.32684096

brainliest or a thank you please :)) <3

Step-by-step explanation: hope this helps

You might be interested in

What is the maximum area for a rectangle whose perimeter is 48 meters?

MakcuM [25]

Answer:

12m²

Step-by-step explanation:

For a rectangle, with length L and width W,

the perimeter is given as

Perimeter,

P = (2 x Length) + (2 x Width)

P = 2L + 2W

It is given that the perimeter is 48, hence

48 = 2L + 2W (divide both sides by 2)

24 = L + W

L = 24 - W -----> eq 1

Also realize that the Area of a Rectangle is given by

A = L x W -----> eq 2

Substituting eq 1 into eq 2,

A = (24 - W) x W

A = -W² + 24W

Recall that for a quadratic equation y = ax² + bx + c, the maxima or minima is given by y(max) = -b/2a

In this case, b = 24 and a = -1

-b/2a = -24/[ 2(-1) ] = 12

Hence for A to be maximum A(max) = 12m² (Answer)

5 0

3 years ago

Score Frequency

RUDIKE [14]

Scores on an AP Exam at a local high school are recorded in the table. What was the average score?

Answer: D) 4.266 is correct

Explanation:

We are given the below frequency table:

Score Frequency

1 | 0

2 | 3

3 | 4

4 | 16

5 | 22

Let's denote the score by $x$ and frequency by $f$ .

The average formula is:

$Average=\frac{\sum fx}{\sum f}$

$=\frac{(1\times0) + (2\times3)+(3\times4) +(4\times16) + (5\times22)}{0+3+4+16+22}$

$=\frac{0+6+12+64+110}{45}$

$=\frac{192}{45}=4.267$

Therefore, the average score was 4.267

Hence the option D) 4.266

7 0

4 years ago

What does the off center rectangle mean in the picture?

Alla [95]

2/5+4/7=2
14/35+20/35=2
34/35=2
FALSE
so the rectangle must be a placeholder that is added
so 34/35+x=2
x=1 1/35 or 36/35

5 0

3 years ago

What is the image of (0,6) after a reflection over the y-axis?

mihalych1998 [28]

Answer:

(0, 6)

Step-by-step explanation:

The point (0, 6) is on the y-axis, so after a reflection over the y-axis, it is still (0, 6).

5 0

1 year ago

A clothing store paid an import tax of $32 on a shipment of $800 worth of silk scarves. The import tax rate is always the same.

bekas [8.4K]

This will be your formula:
$\frac{32}{800} = \frac{120}{x}$
cross multiply (32 times x) (120 times 800)
this is what you'll get:

4 0

3 years ago