Simplify cos(arctan-1)

Answers

Answer 1

Answer:

Step-by-step explanation:

Simplify Cos(arctan-1)

Related Questions

The probability of making a type i error is denoted by.

Answers

The probability of making a type i error is the likelihood of type i error, and it is denoted by α

How to determine the symbol

The type-i error involves rejecting a good prediction or value indicated by the null hypothesis.

In other words, the probability of wrongly rejecting the null hypothesis is the probability of the type-i error.

And it is represented by the alpha symbol.

Hence, the probability of making a type i error is α

Read more about probability at:

https://brainly.com/question/25870256

Plsssss help me to answer this question I will mark you brainlist.
The solution the inequality 4(3x + 2) - 6 > 8 + 2(x - 8) is a x > n. What is the value of n?

n=?

Answers

Answer:

-1

Step-by-step explanation:

First you simplify your parenthesis, then subtract 2x from both sides. Then subtract both sides by 2, then finally divide both sides by 10. x > -1 So n = -1

Hope I helped! :)

Amanda charges $20 fee for babysitting plus an additional $5 per hour. The Wilson family paid the babysitter a total of $35 for a night of babysitting. Which equation could be used to determine h, the number of hours Amanda was babysitting for the Wilson family?

Answers

Answer:

the equation that can be used to determine how many hours Amanda babysitted for the family =

20 + 5x = 35

Amanda babysitted for 3 hours

Step-by-step explanation:

From the question, we know that:

Amanda charges $20 fee for babysitting plus an additional $5 per hour.

Let the number of hours she babysits be represented by x

This is represented by the equation:

$20 + $5× x

= 20 + 5x

We are also told:

The Wilson family paid the babysitter a total of $35 for a night of babysitting.

Hence the equation that can be used to determine how many hours Amanda babysitted for the family =

20 + 5x = 35

5x = 35 - 20

5x = 15

x = 15/5

x = 3 hours

Therefore, Amanda babysitted for 2 hours

100 POINTS!!!

What is the meaning of the initial value in this table?


A. How much he purchased the computer for.

B. How much he spent.

C. How much it goes down.

D. How much he pays per month

EXPLAIN

Answers

Answer:

A

Step-by-step explanation:

Since he is paying the computer off, the first value is considered the initial value, and in this case it is the amount he purchased the computer for.

The smaller triangle is dilated to create the larger triangle. The center
of dilation is plotted, but not labeled.

Answers

Answer:

Point D is the point of dilation.

Step-by-step explanation:

If the smaller triangle A'B'C' is dilated to form a larger triangle ABC by the dilation about point D,

Ratio of the DA and DA' will be equal to the ratio of DB and DB'.

Length of DA = 3 units

Length of DA' = 1 unit

Coordinates of D → (3, 0)

Coordinates of B → (9, 3)

Coordinates of B' → (5, 1)

Use the formula of distance between the two points to find find the length of DB and DB'

Length of DB = [tex]\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}=\sqrt{(3-0)^2+(9-3)^2}[/tex]

                                                                 [tex]=\sqrt{45}[/tex]

                                                                 [tex]=3\sqrt{5}[/tex]

Length of DB' = [tex]\sqrt{(5-3)^2+(1-0)^2}[/tex]

                       [tex]=\sqrt{5}[/tex]

Ratio of DB and DB' = [tex]\frac{3\sqrt{5} }{\sqrt{5} } =3:1[/tex]

Ratio of DA and DA' = 3 : 1

Since, [tex]\frac{DA}{DA'}=\frac{DB}{DB'}[/tex]

Therefore, smaller triangle is dilated by a scale factor of 3 to form the bigger triangle about the point D.

ANSWER QUICKLY PLZZZZZZ ASAP
READ QUESTIONS CAREFULLY
ONLY ANSWER IF YOU KNOW ​

Answers

Answer:

107.25 metres.

Step-by-step explanation:

diameter of circle = 150m,

so,

radius = 75 m

perimeter of semi circle

= pi × r

= 3.14 × 75

= 235.5 m

perimeter of rectangle

= 2 × (l+b)

= 2 × (150 + 75)

= 450 m

perimeter of shaded region

= perimeter of rectangle - perimeter of semi circle/2

= 450 - 235.5/2

=107.25 metres

whoever answers i will have u brainlist:)

Answers

Answer:

your answer should be ty

Step-by-step explanation:

Ok thank you so much

Simplify -|-5 + 2|.
7
3
-7
-3

Answers

Answer:

-3

Step-by-step explanation:

-|-5+2|

-|-3|

=-3

..................

The answer is A and I know that cause I just took the test

round 22.5240 to the nearest thasands please help

Answers

Answer:

It is 22.524

Step-by-step explanation:

SOMEONE HELP!! LOOK AT THE IMAGE

Answers

We know that the answer is either a or b. In by reading for 30 seconds, the answer is indeed B.

Cuanto es 0.5 en fracción

Answers

Answer:

5/10

Step-by-step explanation:

50 POINTS!!!
Help me with this pls
Answer with explanation = Brainliest
Absurd answers = report

Answers

Answer:

A)

Step-by-step explanation:

A systems of equations that are 2 completely separate lines will have 1 solution.

A systems of equations that are the same line will have infinite amount of solutions.

A systems of equation that have parallel lines will have no solution.

We see that B, C, and D are all 2 completely separate lines with their own slope and y-intercept. Therefore, they will have 1 solution.

A is our answer because we see that they have the same slope but different y-intercepts. This means that they are parallel lines and will never intersect each other, thus providing us with no solution.

approximately how many times did taryn gaslight and manipulate cam??
A. never!!
B. once or twice
C. we’re gonna bump it up a little and say a good 10-20 times
D. too many to count this mf crazy.

Answers

d because theres been over a thousand mf times and i cant even remember most of them

need answers, please explain asap! need the answer for 2 and 3!

Answers

Key ConceptsSurface Area and Volume of a Cube

Volume of a cube formula: [tex]V=a^3[/tex]

Surface area of a cube formula: [tex]SA=6a^2[/tex]

[tex]a[/tex] is the side length

Area of a Trapezoid

Area of a trapezoid formula: [tex]A=\dfrac{1}{2}(a+b)h[/tex]

[tex]a[/tex] is the length of the top side[tex]b[/tex] is the length of the bottom side[tex]h[/tex] is the height (forms a right angle with the bottom of the trapezoid)

Solving the QuestionQuestion 2

We're given:

Volume of the cube = 343 cm³We must solve for the surface area

First, use the volume formula to solve for the side length:

[tex]V=a^3[/tex]

⇒ Plug in the known volume:

[tex]343=a^3\\\sqrt[3]{343}=\sqrt[3]{a^3}\\a=7[/tex]

Therefore, [tex]a=7[/tex].

Now, plug this value into the formula for surface area:

[tex]SA=6a^2\\SA=6(7)^2\\SA=294[/tex]

Therefore, the surface area of the cube is 294 cm².

Question 2

We're given:

One can of paint covers 72 ft²[tex]a=14[/tex][tex]b=24[/tex][tex]h=16.5[/tex]

For this question, we must solve for the area of the trapezoid, then divide its double by 72 to find how many cans of paint we need for two coats.

Solve for the area of the trapezoid:

[tex]A=\dfrac{1}{2}(a+b)h[/tex]

⇒ Plug in the given information:

[tex]A=\dfrac{1}{2}(14+24)(16.5)\\\\A=\dfrac{1}{2}(38)(16.5)\\\\A=(19)(16.5)\\A=313.5[/tex]

Therefore, the area of the trapezoid is 313.5 ft²

Multiply it by 2:

[tex]313.5*2\\=627[/tex]

Divide this by 72:

[tex]\dfrac{627}{72}\\\\=8.7[/tex]

Therefore, we need 9 cans of paint to paint two coats over the deck.

Find the measure of angle r

Answers

Answer:

75 degrees

Step-by-step explanation:

75+r+30=180

105+r=180

r=75

PLEASE HELP ASAP I WOULD RLY APPRECIATE IT

Answers

Answer:

The measurement of 7 is equal to 47 because it is congruent to 5.

The equation that could be is is:  (2x-5) + 47 = 180

x is equal to 69.

Step-by-step explanation:

69 times 2 = 138 -5 = 133

133 + 47 = 180

If PQ = 20 and QR = 22, then find the length of PR.

Answers

Answer: 44

Step-by-step explanation: I'm assuming P is on the left most side and R is on the right most side. The two segments of the line adds up to the entire line so it would be PQ(20)+QR(22)=PR(44)

4. What is the value of |–19|?

Answers

Answer:

Absolute value;

The non-negative value of x(in your case -19) without regard to its sign.

Basically how far in distance x(in your case -19) is away from 0.

|–19| = 19

Answer:

19

Step-by-step explanation:

Given the following question:

When dealing with absolute value we need to understand that all negatives in between "|  |" are changed into positives. See absolute value (| |) as if its a car wash, and negatives are dirty cars.

In this case...
[tex]|-19 |[/tex]
[tex]|-19 |=19[/tex]
[tex]=19[/tex]

Hope this helps.

Is this supplementary or congruent?

Answers

Answer:

supplementary

Step-by-step explanation:

we have,

2x+96=180

=> 2x = 180- 96

=> 2x = 82

now,

82 + 96 = 180

so they are supplementary angles

Find the length of the third side. If necessary, round to the nearest tenth. 4 7​

Answers

4^2 + 7^2 = c^2
16 + 49 = c^2

C^2 = 65

65 square root

C = 8.06 or rounded is 8.1

PLS HELP ASAP THANKS ILL GIVE BRAINLKEST PLS THANKS PLS

Answers

Answer:

C

Step-by-step explanation:

Please help fast!!!! A spinner has 3 sections

Answers

Answer:

9/20

Step-by-step explanation:

36/80

orrrr just

9/20

Math help!

Imagine a 10 by 10 by 10 cube made up of 1000 unit cubes and floating in space. What is
the greatest number of unit cubes that can be seen by an observer at any moment in time?

Answers

The most sides that any person could see at once would be 3.

That would be 300 unit cubes, bc each side has 100 unit cubes (10 x 10)

If you want more explanation lmk!

Triangles ABC and DEF are similar.

Find the lengths of segments DF and EF. (do not round)

DF =

EF =

Answers

Answer:

DF=2.68

EF=2.01

Step-by-step explanation:

PLEASE HELP ME WITH THIS RIDDLE

Both of my parents gave me 250$ each and now I have 500$ and then I bought a phone for 450$ and now I have 50 dollars left so i gave my friend 30 dollars because he asked. Now I have 20$ left. Since I have 20$ left I’ll give my parents 10$ each and now they want from me 240$ each and in total I have 480$ to give to my parents but my friend gave my 30$ dollars back that I gave him and now I have 510$ where did that 10$ in the 520$ come from??

Answers

Answer:

15000 pay on the ship for me

Whoever is willing to help I will give extra point I will probably get some done myself but I will need help with the rest

Answers

Answer:

are you just listing defnitions or what

Step-by-step explanation:

5. If the measure of angle 4 is 135 degrees, what is the measure
of angle 5?

Answers

Answer:

Remember that if two angles are supplementary, then the sum of their measures is 180°. So if the measure of an angle is 135 degrees. What is the measure of its supplement?

If the measure of an angle is 135°,

then the measure of its supplement is 45°.

We can find the measure of its supplement by taking 180 minus the measure of the original angle which in this case is 180 - 135 or 45°

In preparation for an earnings report, a large retailer wants to estimate p = the proportion of annual sales that occur during the months of November and December. A SRS of sales from last year revealed that 37 of the randomly selected sales occurred during the months of November and December while 124 occurred during the rest of the year.



Calculate a 95% confidence interval for p

Answers

Answer:

720 I know this because i did this :)

Step-by-step explanation:

The 95% confidence interval for the proportion p is (0.156, 0.302)

What is Statistics?

Statistics is the discipline that concerns the collection, organization, analysis, interpretation, and presentation of data.

To calculate a 95% confidence interval for the proportion p, we can use the following formula:

p ± z√(p(1-p)/n)

where p is the sample proportion (37/161), z is the critical value for a 95% confidence level (1.96 for a large sample size), and n is the sample size (161).

Plugging in these values, we get:

p ± z√(p(1-p)/n)

= 0.229 ± 1.96√((0.229)(0.771)/161)

= 0.229 ± 0.073

Therefore, the 95% confidence interval for p is (0.156, 0.302).

To learn more on Statistics click:

https://brainly.com/question/30218856

#SPJ2

Can some one help me with this step by step with the answer as well?

Answers

Answer:

There isn't enough information to answer the question

Step-by-step explanation:

Richard owned n cows.
Ellis had exactly 4 times as many cows as Richard.
Richard buys 13 extra cows.
Ellis sells 9 of his cows.
Ellis still has more cows than Richard.
Form an inequality, in terms of n.
Solve the inequality to find the least value of n.
You must show all your working.

Answers

Richard has (n)
Ellis has (4n)
Richard now has (n+13)
Ellis now has (4n-9)
Ellis has more cows that Richard
That means
4n-9 > n+ 13
3n > 22
n > 22/3

Hope this helps.
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