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

Answers

Answer 1

Exact form: (\πcos(2))/(4)

Decimal Form: − 0.32684096

brainliest or a thank you please :)) <3


Related Questions

I need help quick plsss??

Answers

Answer:

-4.515

Step-by-step explanation:

2 1/4 + 3 1/2 = ??? ​

Answers

Answer:

[tex]5\frac{3}{4}[/tex]

Step-by-step explanation:

You need to set bot denominators equal so multiply the second fraction by two for both the top and bottom.

[tex]2\frac{1}{4} +3\frac{1}{2} \\ =2\frac{1}{4} +3\frac{2}{4}\\\\ =5\frac{3}{4}[/tex]

(9x² + 6x – 7) + (-9x – 5)

Answers

Answer:

-12

Step-by-step explanation:

What’s 2 + 2?
A. 0
B. 1
C. 2
D. 4

Answers

Answer:

are u kidding me it's literally D --_--

Step-by-step explanation:

answer is D. 4 because when u add two to two it is 4

A triangle with side lengths of 21, 17, and 18 is classified as acute, obtuse, right, or equiangular?

Answers

Answer:

Acute

Step-by-step explanation:

and angle lower than 90 is acute exactly 90 is an right angle from 90 to 180 obtuse 180 to 360 reflex angle and equalateral is 60 degrees on each angle

pls help help help help​

Answers

Answer:

14

Step-by-step explanation:

If x is -18, then we can change the equation to this:

17 + -18/6

14

What is the area of sector GPH?

Answers

Answer:

28.26

Step-by-step explanation:

A = area of a sector

π = 3.14

r = 9

θ = 40

A=πr²*θ/360=3.14*81*40/360=28.26

please please please please please please help help!!!​

Answers

Answer:

25

Step-by-step explanation:

the number of plants can be determined by adding the frequencies together

2 + 5 + 6 + 8 + 3 + 1 = 25 plants

Gabriel is building a roof for a shed. He uses plywood to make the roof with the dimensions shown (rounded to the nearest tenth of a foot), but with an open bottom.

A rectangular pyramid has a rectangular base with length of 7 feet and height of 5 feet. 2 triangles have a base of 5 feet and height of 6 feet. 2 triangles have a base of 7 feet and height of 5.5 feet.

Answers

Answer:

171

Step-by-step explanation:

Answer:

171

Step-by-step explanation:

Each year, roughly 100 computer programmers each make about $
105. How much money is this all together? Express your answer both
as a power of 10 and as a dollar amount.

Answers

So first you do 105*100 to figure out the dollar amount (10500) and then the sci not is 1.05*10^4

Need help ASAP please anyone

Answers

Answer:

Step-by-step explanation:

The ratio of men to women for a company is 5 to 6 if there are 162 women working for the company what is the total number of employees

Answers

Answer:

Step-by-step explanation:

Men:Women

5:6

5*27:162

135:162

Total employees=135+162=297

Dr. Campbell is ordering new student desks for 4th and 5th graders. There are 6 desks in each box that is delivered to the school. There are 43 4th graders and 40 5th graders. Write an expression to determine how many boxes Dr. Campbell should order to have a desk for each student?​

Answers

Answer:

they should buy three more for the 5th grade to match the 4th grade

3/4•3/4???? I can’t do it in my head and I don’t know how to make a decimal into a fraction

Answers

Answer:

0.5625

Step-by-step explanation:

3/4 as a decimal is 0.75

0.75×0.75=0.5625

Answer:

0.75 x 0.75 = 0.5625

Step-by-step explanation:

3/4=.75

A photo of an ant in a science book is increased to 655​% as large as the actual size. If the ant is 14 ​millimeters, what is the size of the ant in the​ photo?

Answers

Answer: [tex]91.7\ mm[/tex]

Step-by-step explanation:

Given

The size of the ant is enlarged by [tex]655\%[/tex]

The actual size of the ant is [tex]14\ mm[/tex]

Enlarged size is

[tex]\Rightarrow 14\times \dfrac{655}{100}\\\\\Rightarrow 91.7\ mm[/tex]

What is the reciprocal of 1/x^3

Answers

Answer:

x^3

Step-by-step explanation:

reciprocal is 1/(given value)

1/(1/x^3)

=x^3

Which equation can be used to find the value of x?
109=180
x+42=67
x=180-109
42+67-x=180

Answers

Answer:

C

Step-by-step explanation:

We know every triangle equals 180 so were just going to take 180 - 42 = 138 then were going to do 138 - 67 = 71  we can check our work by doing

42 + 67+ 71 = 180. We also know 67 + 42 = 109.

Lets look at our answers;

A. 109 = 180 + x  When solved it gave me; x = -71. We got a positive 71 so this is incorrect.

B. x + 42 = 67   When solved it gave me;  x = 25, which is incorrect.

C. x = 180 - 109 When solved it gave me; x = 71

D. 42 + 67 - x = 180 When solved it gave me; x =  - 71

Therefore the answer is C.

A recipe that serves 20 people uses ⅝ cup of water. How many cups of water are needed to serve 70 people?

Answers

Answer:

43.75 or simplified as 43 3/4 which is a mixed number

Step-by-step explanation:

How I did it is divide 5 and 8 and got 0.625 and I divided 70 by 0.625 and got 43.75 and I simplified it as a maxed number and got 43 3/4

What number makes the equation true? 27 +_ = 46 ​

Answers

27 + x = 46

x = 46 - 27

x = 19 Ans .

Answer:

19

Step-by-step explanation:

Subtract- 46-26=19

Therefore, 27+19=46

An equation is shown below:

4(2x − 5) = 4

Part A: How many solutions does this equation have? (4 points)

Part B: What are the solutions to this equation? Show your work. (6 points)

Answers

Answer:

solution given:

4(2x − 5) = 4

2x-5=4/4

2x=1+5

x=6

Step-by-step explanation:

Part A:One

Part B:x=6

What’s the answer ? Please help

Answers

Answer:

C.

Step-by-step explanation:

On her 21st birthday, Sydney deposited $400 in a new bank account that earns 3.7% interest compounded continuously. If there are no other deposits or withdrawals, how much interest will she have earned by her 60th birthday

Answers

Answer:

$1,649.80

Step-by-step explanation:

Sydney will have earned $1293.35 in interest by her 60th birthday.

How to find interest?

To solve this problem, we need to use the formula for continuously compounded interest:

A = P [tex]e^{rt}[/tex]

Where:

A is the final amount of money in the account (including principal and interest)

P is the initial principal (in this case, $400)

r is the interest rate (in this case, 3.7% per year)

t is the number of years the money is invested (in this case, 39 years)

e is the mathematical constant approximately equal to 2.718

Plugging in the values from the problem, we get:

A = $400[tex]e^{0.037 \times 39}[/tex]

Calculating this, we find that A = $400[tex]e^{1.443}[/tex] = $1693.35

Therefore, he will have earned $1693.35 - $400 = $1293.35 in interest by her 60th birthday.

To learn more about Compound interest click here:

brainly.com/question/25857212

#SPJ2

During a school assembly, 15 out of 60 students wore orange shirts to show school spirit. what percent of the students did NOT wear orange shirts?

Answers

Answer: 75%

15/60 wore orange shirts

45/60 didn’t

45/60 = 0.75 = 75%

Help plz i will give brainliest!!

Answers

Precipitation is when liquid falls from the atmosphere and reach the surface of the Earth. Condensation is when water vapor changes back into water (in liquid form).


how many solutions does 3(4x - 2) = -12x - 6 have

Answers

3(4x-2) = -12x-6
12x-6 = -12x-6
24x = 0
x = 0
So there’s only One solution

use the elimination method to sole the system of equations. choose the correct ordered pair.
-x + 5y = -4.
4x + 3y = 16.

Answers

(X,Y) = (4,0)


That’s what I got.

Answer:

(4,0)

Step-by-step explanation:

4(-x + 5y) = 4(-)

4x + 3y = 16

-4x + 20y = -16

4x + 3y = 16

23y = 0

23y/23 = 0/23

= 0

y = 0

then for x

we substitute the value gotten from y into the equation.

In the figure below, lines m and n are Parallel:

In the diagram shown <7 measure 105 degrees. What is the measure of <8? They are supplementary

8 degrees
75 degrees
92 degrees
180 degrees

Answers

Answer:

75 degrees.

Step-by-step explanation:

m < 8 = 180 - m <7

= 180 - 105

= 75 degrees.

Mr. Weaver has 36 history students. The ratio of girls to boys is 2:1. How many girls does he have in his class?​

Answers

Answer:

24 girls

Step-by-step explanation:

24:12

2:1

PLEASE HELP ASAP!!!!!!!! 2+2

Answers

Answer:

4

Step-by-step explanation:

it's four imma just goo

The answer is 4!!!!!!

Negative ten is no less than two times a number plus fourteen.

Answers

Answer:

i this like true or false,if so its true

:)

Step-by-step explanation:

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