Please help me with this problem. I'm kind of stuck and don't know what to do.

Please Help Me With This Problem. I'm Kind Of Stuck And Don't Know What To Do.

Answers

Answer 1

Try this option:

1) if csc(u)=9, then 1/sin(u)=9 and sin(u)=1/9;

2) if sin(u)=1/9, then cos(u):

[tex]cos(u)=\sqrt{1-sin^2(u)}=\sqrt{1-\frac{1}{81}}=\frac{4\sqrt{5}}{9};[/tex]

3) [tex]if \ sin(u)=\frac{1}{9} \ and \ cos(u)=\frac{4\sqrt{5}}{9}, then[/tex]

[tex]sin(2u)=2sin(u)*cos(u)=\frac{8\sqrt{5}}{81};[/tex]

[tex]cos(2u)=cos^2(u)-sin^2(u)=\frac{80}{81}-\frac{1}{81}=\frac{79}{81};[/tex]

[tex]tan(2u)=\frac{sin(2u)}{cos(2u)}=\frac{\frac{8\sqrt{5}}{81}}{\frac{79}{81} }=\frac{8\sqrt{5}}{79}.[/tex]


Related Questions

Mr. White has 2 suits, 5 dress shirts, and
6 ties. How many different clothing combinations can he make?

Answers

Answer:

60

Step-by-step explanation:

Use the counting principle.

2 × 5 × 6 = 60

Answer: 60

What does y= -3x+3 equal

Answers

Answer:

Solving for x, the answer is x = 1 - y/3

Hope this helps :D

Answer:

Step-by-step explanation:

y= -3x+3 is the equation of a straight line with slope -3 and y-intercept 3. The x-intercept is found by letting y = 0 and solving for x:  x = 1.

y= -3x+3 can be re-written in "standard form:"  3x + y = 3.

Write an equation of the line passing through ​(-2​,1​) and ​(3​,2​). Give the answer in standard form

Answers

how do i delete my answer because apparently my answer is wrong so yes i don't know how to delete it so i'm just editing it and have a good day people

Answer:

y=[tex]\frac{1}{5}[/tex]

Step-by-step explanation:

y=m-+x so y=slope+or-y-intercept

Ernie’s bakery sells pastries for $.75 each. A customer purchased 112 pastries, and Ernie gave him an 8.375% discount. How much did that customer pay for the pastries he purchased?

Answers

Answer:

$7.6965 or $7.70

Step-by-step explanation:

We multiply the price by the amout he bought.

0.75 x 112 = 84 or $8.40

This is how much he would have paid without a discount. To find the discount we multiply the initial amount by the discount percent in decimal form.

8.4 x 0.08375 = 0.7035

This is the amount thay will be subtracted from the initial price.

8.4 - 0.7035 = 7.6965 or $7.70

Help me solve this please, im really bad at stuff like this

Answers

Answer:

given

Step-by-step explanation:

Answer:

statement - reason

BC||AD, <BAD is congruent to <DCB - given

<CBD is congruent to <ADB - alternate interior angles

BD is congruent to BD - reflexive (?)

triangle ADB is congruent to triangle CBD - AAS

AB is congruent to CD - CPCTC (corresponding parts of congruent triangles are congruent)

−4 1/2÷(−2 2/3) i need help

Answers

Answer:

[tex]1\frac{11}{16}[/tex]

Step-by-step explanation:

Convert mixed numbers into improper fractions.

= [tex]\frac{-\frac{9}{2}}{\left(-2\frac{2}{3}\right)}[/tex]

= [tex]\frac{-\frac{9}{2}}{\left(-\frac{8}{3}\right)}[/tex]

= [tex]\frac{\frac{9}{2}}{\frac{8}{3}}[/tex]

= [tex]\frac{9\cdot \:3}{2\cdot \:8}[/tex]

= [tex]\frac{27}{2\cdot \:8}[/tex]

= [tex]\frac{27}{16}[/tex]

Convert improper fraction into mixed number.

= [tex]1\frac{11}{16}[/tex]

the answer would be 1 11
-
16

Joe lost his part-time job, which reduced the net family income by 20%. His wife Janice decided to work overtime to compensate for the lost income. Other things being equal, by what percentage must her net salary increase in order to arrive at the same net family income as they had before Joe lost his job?​

Answers

The percentage by which Janice's net salary must be increased in order to arrive at the same net family income as they had before Joe lost his job is 25%.

What are Percentages?

A percentage is a way to describe a part of a whole. such as the fraction ¼ can be described as 0.25 which is equal to 25%.

To convert a fraction to a percentage, convert the fraction to decimal form and then multiply by 100 with the '%' symbol.

Let the salary of Joe be represented by x, while the salary of Janice is represented by y.

Since the sum of the salary of Joe and Janice is the net income of the family. Therefore, the net salary when Joe had a job will be,

x + y₁ = 100%

Now, it is known that Joe lost his job, which reduced the net family income by 20%.  Therefore, the net salary now will be only 80% which will be equal to the salary of Janice. Thus, we can write,

y₁ = 80%

Further, Janice decided to work overtime to compensate for the lost income. Therefore, we can write,

y₂ = 100%

Furthermore, the percentage change in salary of Janice can be written as,

Percentage Change = [(100% - 80%)/80% ] × 100%

                                  = 20/80  × 100%

                                  = 25%

Hence, the percentage by which Janice's net salary must be increased in order to arrive at the same net family income as they had before Joe lost his job is 25%.

Learn more about Percentages:

https://brainly.com/question/6972121

#SPJ2

write a two column proof. given: ab is congruent to ed, ca is congruent to ce; ac bisects bd. Prove abc is congruent edc.

Answers

Given that, AB ≅ ED, CA ≅ CE, and AC bisects BD, the two-column proof that shows ΔABC ≅  ΔEDC by SSS Congruence Theorem is shown in the image attached below.

What is the SSS Congruence Theorem?

The side-side congruence theorem (SSS) states that if two triangles has three pairs of sides that are congruent to each other, then both triangles are congruent.

We are given the following information:

AB ≅ EDCA ≅ CEAC bisects BD

Since AC bisects BD, therefore the third pair of sides of ΔABC and ΔEDC, BC and CD, will be congruent.

Therefore, it implies that both triangles has three pairs of congruent sides (AB ≅ ED, CA ≅ CE, and BC ≅ CD), which meets the criterion of the SSS Congruence Theorem.

Therefore,  ΔABC ≅  ΔEDC by SSS Congruence Theorem.

The two-column proof that shows ΔABC ≅  ΔEDC by SSS Congruence Theorem is shown in the image attached below.

Learn more about the SSS Congruence Theorem on:

https://brainly.com/question/19262620

Which of the number line graphs shows the solution set of |x – 2| > 3?

Answers

Answer:

I have it!

Step-by-step explanation:

Is the inequality 5-x^2<4 true for x=1?

Answers

5 - x² < 4

- x² < 4 - 5

- x² < - 1

=》x² < 1

Now, let's check with x = 1

x² < 1

(1)² < 1

1 < 1

1 is not less than or greater than 1. They are equals. So, the inequality 5 - x² < 4 is NOT true for x = 1.

_____

Hope it helps ⚜

Find the least common denominator for these fractions. Enter your answer in
the space provided.
5/6
and
5/4

Answers

Answer:

LCD = 12

Equivalent Fractions with the LCD

5/6 = 10/12

5/4 = 15/12

Step-by-step explanation:

Rewriting input as fractions if necessary:

5/6, 5/4

For the denominators (6, 4) the least common multiple (LCM) is 12.

LCM(6, 4)

Therefore, the least common denominator (LCD) is 12.

Calculations to rewrite the original inputs as equivalent fractions with the LCD:

5/6 = 5/6 × 2/2 = 10/12

5/4 = 5/4 × 3/3 = 15/12

I used a least common denominator calculator so I hope this helped!!

LESSON 3
WHATS MORE
Translate each English phrase/sentance into Mathematical phrase/sentance
1. The sum of 4 and number________
2. Six less than a number_________
3. The product of 8 and a number______
4. The quotient of x and 7 ______
5. Five more than a number is equal to 15_____ ​

Answers

Answer:

1. 4+x

2. x-6

3. 8x

4. x/7

5. x+5=15

Step-by-step explanation:

Jennifer’s bill for lunch was $15.00 If Jennifer left a 20% tip, which proportion would BEST represent how to find how much tip she should leave?

Answers

Answer: $3

Step-by-step explanation:

15 times .20 then subtract that from 15

Answer:

$3

Step-by-step explanation:

because other people said it and especially your MOTHER SAID IT TOO HAHAHAHAHAHAHAHAHAHAHAHAHAHAHAH

Lincln Middle School plans to collect more than 2,000 cans of food in a food drive. So far, 688 cans have been collected. Write and solve an inequality to find numbers of cans the school can collect on each of the final 7 days of the drive to meet this goal. Which two-step inequality represents this situation?

Answers

Answer
688 + x = 2000
7y = x

Reason
1. Find how many more they need
2. Find how many they need each day

Please help me in this 4th grader question, its a homework and i was sick over the weekend

Answers

Answer:

what is your question ask then I shall answer you

What are the length and width of a rectangular traffic sign if the length exceeds the width by 4 inches and the perimeter is 152 inches?

Answers

Answer:

L = 40

w = 36

Step-by-step explanation:

P = 2*L + 2*w

L = w + 4

w = w

P = 152

P = 2*(w + 4) + 2*w             Remove the brackets

P = 2w + 8 + 2w                  Combine and switch sides Use P = 152

4w + 8 = P

4w + 8 = 152                        Subtract 8 from both sides.

4w = 152 - 8

4w = 144                               Divide by 4

4w/w = 144/4                  

w = 36

L = w + 4

L = 36 + 4

L = 40

Find the perimeter of the figure.

Answers

[tex]perimeter = 17 + 19 + 7 + 11 + 10 + 8 \\ [/tex]

[tex]perimeter = 72 \: \: cm[/tex]

I need help with math

Answers

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

[tex] \frac{1}{5} + \frac{9}{20} = \\ [/tex]

[tex] \frac{4}{20} + \frac{9}{20} = \\ [/tex]

[tex] \frac{13}{20} \\ [/tex]

is it 90 IF NOT CAN SOMEONE TELL ME please

Answers

Answer:

90

Step-by-step explanation:

1000 + 500 = 1500mg (for 1 day)

1500 * 30 = 4500mg (1 month)

4500 : 500 = 90 tablets

What is 1 1/2 divided by 8

Answers

Answer:

3/16

Step-by-step explanation:

start by converting 1 1/2 to an improper fraction by multiplying the 1 by the denomerator and then adding the 1 from teh numerator. Then place that all over the denomantor two. so you get 3/2

then set up your equation:

3/2 x 1/8

you do the resipricol of one of the numbers so instead of 8/1 we do 1/8

3 times 1= 3

2 times 8 is 16

3/16 does not simplify so thats your answer

Answer:

3/16

Step-by-step explanation:

((1 1/2)/8)=(3/2)/8

8 times 2(demoninator)=16

numerator stays same so the answer is 3/16

Um yeah so ignore the blue circles. I need your helpp ty <3

Answers

Answer:

where is the diagram u there is must must graphic of this or diagram

Answer:

15, 6,0, 11, 7

I'm not sure but hope it helps

Step-by-step explanation:

y=8+7

=15

y=-1+7

=6

y=-7+7

=0

y=4+7

=11

y=0+7

=7

The coordinates of a square are (3,2), (8,2), (8,7), and (?,?)

Answers

Answer:

i don't know can u solve plz

Answer:

(3, 8)

Step-by-step explanation:

For this, draw a graph and locate the points. Then you can determine where the missing point should be to draw a square. Check out the graph I sent to understand what I'm talking about.

A rectangle has a length of 25 meters less than 6 times it’s width. If the are of the rectangle is 261 square meters, find the length of the triangle

Answers

13.73684210526316 i used calculator

The original price of a Shirt was $45. In sales, the shirt is reduced to $32.50. Calculate the percentage reduction.

Answers

Answer:

27.8%

Step-by-step explanation:

[tex]\frac{32.5}{45} =0.722[/tex]

0.722 = 72.2%

The % reduction is:

(100-72.2)% = 27.8%

Hope this helps

if Jenny buys 2 8-inch di|dos for 8$ then what is the total price

Answers

Answer:

$16

Step-by-step explanation 2 x 8 to 8 + 8 =16

The base of a triangle is shrinking at a rate of 5 cm/s and the height of the triangle is increasing at a rate of 9 cm/s. Find the rate at which the area of the triangle changes when the height is 12 cm and the base is 4 cm.

Provide your answer below:
The rate of change of the area of the triangle is ___ cm²/s.

Answers

Answer:

Step-by-step explanation

Area of a triangle

      A = ½bh

dA/dt = ½(b(dh/dt) + h(db/dt)

dA/dt = ½(4(9) + 12(-5))

dA/dt = ½(36 - 60)

dA/dt = ½(-24)

dA/dt = -12 cm²/s

The rate of change of the area of the triangle is [tex]-12 cm^2/s[/tex].

What is Area?

The measurement that expresses the size of a region on a plane or curved surface is called area. Surface area refers to an area of an open surface or even the boundary of a three-dimensional object, whereas the area of a plane region as well as plane area refers to a area of a shape or planar lamina. Area can be interpreted as the quantity of material with a specific thickness required to create a model of the shape or as the quantity of paint required to completely cover a surface in a single coat. It is the two-dimensional equivalent of a curve's length.

A shape's area can be calculated by contrasting it with squares of a known size.

[tex]\frac{\mathrm{d} b(t)}{\mathrm{d} t}=-5cm/s[/tex]

[tex]\frac{\mathrm{d} h(t)}{\mathrm{d} t}=9 cm/s[/tex]

[tex]\frac{\mathrm{d}A }{\mathrm{d} t}=\frac{1}{2}\left (b\frac{\mathrm{d} h}{\mathrm{d} t} +h\frac{\mathrm{d} b}{\mathrm{d} t}\right )[/tex]

[tex]\frac{\mathrm{d} A}{\mathrm{d} t}=-12 cm^{2}/s[/tex]

Hence, The rate of change of the area of the triangle is [tex]-12 cm^2/s[/tex].

Learn more about area from link

https://brainly.com/question/25292087

#SPJ2

triangle abc was dilated from the orgin by a scale factor of 2 to create triangle A’B’C’ which statement explains why the triangles are similar ?

Answers

Answer:ABC was dilated from the origin by a scale factor of 2 to create Delta A'B'C' . Which statement explains why the triangles are similar? Dilations preserve side length; therefore, the corresponding sides of Delta ABC and Delta A'B'C' are congruent.

Step-by-step explanation:Googel

A researcher is interested in testing the perceived effort (PE) of runners under three different terrains. PE is measured on a scale that ranges from 0 to 15, where higher scores indicate greater effort. The three terrains were a running track (i.e. the control), a mostly flat sidewalk, and a hilly neighborhood. Participants were randomly assigned to only one type of terrain. What type of analysis should the researcher conduct

Answers

I don’t know i’m only in eighth grade

QUESTION 4
Round the following number to two significant digits: 137,426.9

Answers

137,426.9 is 140,000 when rounded to 2 sig figs

What is the correct unit rate?And what is Jessie's likely error?​

Answers

Answer:

4

Step-by-step explanation:

1[tex]\frac{1}{2} / \frac{1}{8} = \frac{1}{2} * \frac{8}{1} = \frac{8}{2} = 4[/tex]

she forget that fraction will reverse if it move below or up side, I think

Other Questions
help as soon as possibleThe greatest common factor of y^4. y^6 and y^5 is which element of the plot does the last paragraph represent? The Young Forester by Zane Grey Read these two sentences.Real estate agents help people look for homes they may want to buy, ____ loan officers help people apply for loans to buy a home.What signal word best completes the blank?andalsowhilelike Another name for the Paleolithic Era is the New Stone Age. True or False!!!!GIVING BRAINLIEST!!!IF u get it right ill give Brainliest!! Is this a quadratic function? Why or why not? Which summary best describes the Transatlantic slave trade?Select all the correct answers.A.African tribes exchanged captive Africans with European slave traders, who transported them to the Americas. B.Europeans forced African captives to migrate to the Americas in order to build their own settlements in West Africa.C.Southerners sold off their children to plantation owners in the Caribbean islands.D.European and American sea captains took American Indians by force across the Atlantic to work as slaves in Europe and Africa.E.African captives were transported through the Middle Passage under inhumane conditions. How many feet does each student climb after 10 steps? A worm wriggled forward 45 of an inch in 3 minutes. At that rate, how far would the worm go in 1 minute? He does not like basketball.He does not like football too.(rewrite using neither)? 14. Janine has job offers at two companies. The Nabisco company offers her a starting salary of $28,000 plus $2,000 for transportation costs with a raise of $3000 each year. The Keebler company offers a starting salary of $36,000 with a $2000 a year raise, After how many years would her salary at Nabisco be greater than Keebler? events or ideas that lasted from the end of the 19th century to the 20st century 6. Ayer los perros no_____ los deberes de los alumnos. A comiste b.comimos c. comieron d. come What is precipitation ???? The writer wants to start the third paragraph (sentences 10-14) with a sentence that captures what the different claims and evidence in the paragraph are meant to show. Which of the following sentences should the writer add immediately before sentence 10 to achieve this goal?. Help me please I'm stuck on this question when demonstrating 2022 altimas parking assistance, what steering feature should you mention when pointing out how easy the vehicle is to steer at low speeds? Chase stole money from a local grocery store to buy beer. He later assaulted a 72-year-old woman and stole her purse because he felt like he needed money more than she did. He bought a cup of coffee with money he found in the purse while he waited for the next train. On the train, a woman accidentally stepped on his shoes, so he threw the hot coffee on her and laughed. Chase would be diagnosed with _____ personality disorder. 1/4 divided by 3 Im behind and I really just want to get this over with :) plus math is my least favorite subject thanks to my teacher so yeah plz help:) Use prime factorization to find the GCF (greatest common factor) of the following sets of numbers. Show the steps you used to find the GCF. 1) 18: 20: GCF: 15: 25: GCF: 40: 32: GCF: 12: 22: GCF: 10: 20: GCF: 9: 16: GCF: 30: 15: GCF: 15: 35: GCF: 14: 28: GCF: 24: 8: GCF: 45: 27: GCF: 36: 42: GCF: 2)3) 4) 7) 10) 5) 8) 11) 6) 9) 12) Who sets bail for criminal offenses