Mathematics College

if cos(x) = -1/4 and tan(x) < 0, what is sin(2x)​

Answers

Answer 1

Answer:

B is correct: (-sqrt15)/8

Step-by-step explanation:

Answer 2

The value of the x is 104.5° then the value of the sin 2x is -0.49. Then the correct option is B.

What is trigonometry?

Trigonometry deals with the relationship between the sides and angles of a right-angle triangle.

If cos(x) = -1/4 and tan(x) < 0

Then the value of the x will be

[tex]\begin{aligned} \cos x &= - \dfrac{1}{4}\\\\x &= \cos^{-1} \dfrac{-1}{4}\\\\x &= 104.5^o \end{aligned}[/tex]

Then the value of the sin 2x will be

[tex]\sin 2x = \sin 2*104.5^o\\\\\sin 2x = \sin 209^o\\\\\sin 2x = -0.4848 \approx 0.49[/tex]

More about the trigonometry link is given below.

https://brainly.com/question/22698523

Related Questions

simply in ratio 20:80

Answers

Answer:

I think the answers could range in anything that are GCF including 2:8

Step-by-step explanation:


Identify next three numbers in this sequence: 2, 6, 3, 9, 6, 18, 15…

Answers

Answer:

10000000000000000000000,

the next number: 1-934028049747284

that's all

pls report

thanks!))))

Step-by-step explanation:

The answer would be 15x5=75

The graph of h(x) = x2 – 3 is a translation of the
graph of f(x)
by
units.

Answers

Answer: down, by 3 units

Step-by-step explanation: -3 is negative so you go down on the graph 3 times

Answer:

down by 3 units

Step-by-step explanation:

i just did this assignment on edg

What are the opposites of 5, −2.4, 2.25, and 8 12 ? Enter the answers in respective order, each separated by comma.

Answers

Answer:

-5, 2.4, -2.25, -8, -12

Answer:

-5, 2.4, -2.25, -8, -12

Step-by-step explanation:

To make an number the opposite of itself you either make it a positive or negative. For example the opposite of 3 is -3 and the opposite of -3 is 3.

If the length is 4 and the width is 6, what’s the height?

Answers

Answer:

The answer to this is: 24

Step-by-step explanation:

mZB = xo, what is the measure of a
supplement of LB?

Answers

9514 1404 393

Answer:

  supplement of ∠B = 180° -x°

Step-by-step explanation:

The supplement of an angle is the difference between 180° and that angle.

  supplement of ∠B = 180° - m∠B

  supplement of ∠B = 180° -x°

PLS HELP WHOEVER ANSWERS FIRST I WLL GIVE YOU BRAINLIEST!!!!!

Answers

Answer:

A Drill Pickle

Step-by-step explanation:

A Drill Pickle is the overall answer sentence, tho I can't really do all the work for you. Just count the squares and after the first 4 do mutiplication of the base (hight)

Calculate the Social Security and Medicare tax that would be applied to an annual salary of $235,430. Use $106,800 for
maximum taxable earnings.
a. Social Security tax: $1,459.67, Medicare tax: $341.37
b. Social Security tax: $14,596.66, Medicare tax: $3,413.70
c. Social Security tax: $662.16, Medicare tax: $341.37
d. Social Security tax: $6,621.60, Medicare tax: $3,413.70

Answers

Answer:

D   Social Security tax: $6,621.60, Medicare tax: $3,413.70

Step-by-step explanation:

Following are the calculation to the Social Security and Medicare tax value:

This Social Security tax is a percent to which both workers and employers must pay [tex]6.2\%[/tex] of employee wages, for a total of [tex]12.4\%[/tex].The state pension, which would be applied to a [tex]\$235,430[/tex] annual wage with a maximum tax liability:

         [tex]\to \$106,800\ is\ 12.4\%\ of\ \$106,800 = 0.124 \times \$106,800 = \$13,243.20[/tex]

Its payroll tax for Medicare is [tex]2.9\%[/tex].This only applies to earned income, which includes salaries and tips from an employer. We are liable for [tex]1.45\%[/tex] of a tax, which would be immediately withheld from your paycheck. The other [tex]1.45\%[/tex] is paid by your company. This Medicare tax would be charged to a [tex]\$235,430[/tex] annual salary with a maximum taxable income:

     [tex]\to \$106,800\ is\ 2.9\%\ of\ \$106,800 = 0.029 \times \$106,800 = \$3,097.20[/tex]

Therefore, the final answer is "$13,243.20 and $3,097.20".

Learn more:

brainly.com/question/1899088

Plss help i dont understand :(

Answers

I believe it’s c I’m 90% sure hope u get 100%

Marcos sells video games that he purchases from a distributor. He buys
each game for $30. If there is a 60% markup, calculate the markup and
selling price.

Answers

Answer:

the mark up would be $18. so the total sales price would be $48.

Step-by-step explanation:

Can somebody pls answer these three questions pls!!!!ASAP

Answers

Answer:

1) x=1

2) x=6

3) x=3

Step-by-step explanation:

i just did them :) good luck

idk how to do this..............

Answers

ABE : Right Triangle
BEC : Equilateral Triangle
DEF : Equilateral Triangle
CDF : Acute Triangle

Hopefully this help! sorry if i’m incorrect :)

I will mark you as brainliest if you answer this

Answers

I believe it's 14.17/D

Answer:

14.2

Step-by-step explanation:

Since your rounding to nearest hundredth you look at the second one

.17 rounds to 2

So you get 14.2

Hope that helps dude

Jordan earns $15.35 per hour. on Tuesday , Jordan clocked in at 7:45 Am then clocked out for a break at 12:15 am and working until 6:00 pm a.How many hours did Jordan work b.what was his total pay for day​

Answers

12:45Answer:

Part A: 9 hours 45 minutes

Part B: $126.1575

Step-by-step explanation:

Part A,

From 7:45 to 12:15 is 4 hours and 30 minutes

From 12:45 which he clocked back in to 6:00 is 5 hours and 15 minutes.

4 hours and 30 minutes plus 5 hours and 15 minutes = 9 hours and 45 minutes.

Part B, 9 hours and 45 minutes can be represented as 9.45

And since he gets 15.35 "per" hour shows we can multiply.

15.35 x 9.45 = 126.1575

Therefor he earned 126.15.

help with question 8 please

Answers

Answer:

the answer is G I believe

I think also the answer is G.

Thank all of you !!!

Answers

Answer:

[tex]this \: proberbility \: is \: \frac{2}{12} = \frac{1}{6} [/tex]

Answer:

1/6

Step-by-step explanation:

First there is 12 muffins, minus 7 and 3 equals 2 cranberry ones, and 2/12 = 1/6.

Please help me! 5:34 est answer as soon as you can!!

Answers

B because it is the only one were the 'y-coordinate' is not the same for 2 different 'x-coordinates'

hope this helps!!

The distance D that a spring is stretched by a hanging object varies directly as the weight W of the object. if a 9-kg object stretches a spring 54cm, find the distance when the weight is 2-kg. round your answer to the nearest whole centimeter.
a. 65 cm
b. 12 cm
c. 0 cm
d. 6 cm

Please select the best answer from the choices provided.
.A
.B
.C
.D

Answers

Answer:

I think it is b

Step-by-step explanation:

The distance when the weight is 2 kg will be 12 cm. Then the correct option is B.

What is the spring force?

The spring force is directly proportional to the deflection of the spring. Let 'x' be the deflection of the spring due to force 'F'. Then the spring force is given as,

F ∝ -x

F = - kx

mg = - kx

The distance D that a spring is stretched by a hanging object varies directly as the weight W of the object. if a 9-kg object stretches a spring 54cm. Then the spring force is calculated as,

9g= - k (54)

- g / 6 = k

Then the equation is given as,

F = (g / 6) x

The distance when the weight is 2 kg will be given as,

2g = (g / 6) x

12 = x

The distance when the weight is 2 kg will be 12 cm. Then the correct option is B.

More about the spring force link is given below.

https://brainly.com/question/14655680

#SPJ5

If James bought 5/12 of cherries and 1/3 of cranberries. How much fruit did he buy. Write your answer in simplest form.

Answers

Answer:

The correct result would be 3/4 of a pound of dried fruit.

Ben is training for a triathlon he runs 1/5 of a mile in 1/20 of an hour he swims 2/3 of a mile in 1/9 of an hour he bikes for miles in 1/4 of an hour at these rates how many minutes does it take Ben to run 2 miles and bike 8 miles?

Answers

Answer:120 minutes

Step-by-step explanation:

You see it's math

Answer:

110

Step-by-step explanation:

4. What is the slope of the line that contains the points (-3,-9) and (4,-2)?​

Answers

Answer:

The slope is 1

Step-by-step explanation:

Answer:

y = x – 6

Step-by-step explanation:

If a=3 what is the value of 2a2

Answers

Answer:

12

Step-by-step explanation:

You can break it down like this, 2 x a x 2 or 2 x 3 x 2

2x3=6 6x2=12

Answer: 12

Step-by-step explanation:

12

A vehicle uses 2.3 gallons of gas when driven 48.3 miles. . How many miles can the vehicle go if it uses only 1 gallon of gas?

Answers

The vehicle can go 21 miles on 1 gallon of gas

6x +3 = 7x-3
Solve this eqation plss

Answers

Answer:

6

Step-by-step explanation:

Step 1:

6x + 3 = 7x - 3     Equation

Step 2:

3 = x - 3    Subtract 6x on both sides

Step 3:

x = 3 + 3    Add

Answer:

x = 6

Hope This Helps :)

help me pleaseeeeeeee ​

Answers

Answer:

(0,4) and (-4,-2)

Step-by-step explanation:

Since the y-axis represents the distance above the ground, to find the intervals where the dron's distance above the ground is increasing, simply find the intervals where slope of the line is going upwards on the y-axis.

Label following study as either an observational study, an experiment, or neither.

Many parents have expressed concerns that pertussis vaccinations will cause wheezing disorders or asthma in later life. In 2009 the Journal of the American Academy of Pediatrics published research by the Institute of Social and Preventive Medicine in Bern, Switzerland. The researchers wanted to determine if routine childhood vaccination against pertussis (whooping cough) was associated with subsequent development of childhood wheezing disorders and asthma. The researchers studied 6811 children from the general population born between 1993 and 1997 in Leicestershire, UK. From birth through 2003, they conducted repeated questionnaire surveys about wheeze and asthma and then linked the respiratory symptom data to independently collected vaccination data from the National Health Service database. Then the researchers compared wheeze and asthma incidents for children of three different levels of vaccination (complete, partial, and no vaccination). The analyses were based on 6,048 children with available vaccination records.

a. observational study
b. an experiment
c. neither

Answers

Answer:

a. observational study

Step-by-step explanation:

An observational study is one in which the researcher seeks to discover the effect of a disease or treatment without interference on those who are affected or not affected by it. Observational studies could be of two types namely; the case-control, and the cohort study. The research given above is a cohort study because it compares a group of people born in the same time period and checks for the presence of a disease that could be linked to the vaccinations administered at birth.

A case-control study compares those affected by the disease to those not affected by it. An experimental study assigns the participants to groups and there is a control or placebo group. After this, the results from the groups are compared.  

A line has a slope of 3 and a y-intercept of 5. What is its equation in slope-intercept form? Write your answer using integers, proper fractions, and improper fractions in simplest form?
IF U ANSWER SOMETHING JUS TO GET POINTS YOU WILL GET DELETED AND REPORTED !!!!

Answers

Answer:

y=3x+5

Step-by-step explanation:

Slope intercept form is always y=mx+b

'm' represents slope and 'b' represents y-intercept.

Hope it helped.

List the side lengths from shortest to longest

Answers

Answer:

MO, NO, MN

Step-by-step explanation:

Answer:

the lengths from shortest to longest is: m, o, n.

Set up a equation and solve for X.

Next to each step write the postulate or property used for that step

Answers

Answer:

[tex] x = 4 [/tex]

Step-by-step explanation:

[tex] GH = 3x [/tex] (given)

[tex] HJ = x + 16 [/tex] (given)

[tex] GJ = 32 [/tex] (given)

[tex] GH + HJ = GJ [/tex] (segment addition postulate)

[tex] (3x) + (x + 16) = 32 [/tex] (substitution)

Solve for x

[tex] 3x + x + 16 = 32 [/tex]

[tex] 4x + 16 = 32 [/tex]

[tex] 4x + 16 - 16 = 32 - 16 [/tex] (subtraction property of equality)

[tex] 4x = 16 [/tex]

[tex] \frac{4x}{4} = \frac{16}{4} [/tex] (division property of equality)

[tex] x = 4 [/tex]

In an office building, 42 offices are currently being rented. This represents 40% of the total units. How many offices are in the building?

Answers

Answer:As per problem, 60% units constitute 72 offices. Let total number of units be x.

Hence, 0.6x = 72

or, x = 72/0.6 = 720/6 = 120

HTH

Step-by-step explanation:

Other Questions
Jack plans to buy 2.25 lb of coleslaw at $2.80 per pound. He also wants 2lb of macaroni salad that sells for $3.15 per pound. Jack has a $10 bill in his wallet. Is this enough for the coleslaw and the macaroni? Explain. 52$ tie; 50% discount List three applications of pressure in our daily lives. In the Passage 2, what is the main action of the poem?A)A discovery ship sails out into the middle of the unknown.B)The admiral tells the crew to keep sailing although they only see ocean.C)The sailors prepare daily to overthrow the captain and take over the ship. D)The sailors fear they may be lost or possibly sailing into some great danger.Passage 2: "Columbus" Behind him lay the gray Azores, Behind the Gates of Hercules; Before him not the ghost of shores; Before him only shoreless seas.5 The good mate said: "Now must we pray, For lo! the very stars are gone. Brave Adm'r'l, speak; what shall I say?" "Why, say, 'Sail on! sail on! and on!'" "My men grow mutinous day by day; 10 My men grow ghastly, wan and weak." The stout mate thought of home; a spray Of salt wave washed his swarthy cheek. "What shall I say, brave Adm'r'l, say, If we sight naught but seas at dawn?"15 "Why, you shall say at break of day: 'Sail on! sail on! sail on! and on!'" They sailed and sailed, as winds might blow, Until at last the blanched mate said: "Why, now not even God would know20 Should I and all my men fall dead. These very winds forget their way, For God from these dread seas is gone. Now speak, brave Adm'r'l, speak and say"- He said: "Sail on! sail on! and on!" 25 They sailed. They sailed. Then spake the mate: "This mad sea shows his teeth to-night. He curls his lip, he lies in wait, He lifts his teeth, as if to bite! Brave Adm'r'l, say but one good word:30 What shall we do when hope is gone?" The words leapt like a leaping sword: "Sail on! sail on! sail on! and on!" Then, pale and worn, he kept his deck, And peered through darkness. Ah, that night35 Of all dark nights! And then a speck- A light! A light! At last a light! It grew, a starlit flag unfurled! It grew to be Time's burst of dawn. He gained a world; he gave that world40 Its grandest lesson: "On! sail on!" Helpppin your journal, answer the "Culminating Activity" assignment question on p. 34 about Helen Kellers letter to Mark Twain. (2nd edition: Read pp. 3035 and answer the assignment question on p. 30 related to the texts about the 1969 Apollo 11 mission.) easy questions pls help (question in picture) why do historians say the ability to domesticate plants and animals was a revolution Each month, your phone company charges you a fee of 15 cents per minute as well as a service fee of $6.95 . Write a linear function rule that models the number of dollars y you pay each month for any number of minutes x. PLEASE HELP MEEE!!!Below are works-cited entries for a book with two authors. Select the one that is completely correct.Entry A:Boeck, Wilhelm, and Jaime Sabartes, Picasso, Abrams, 1971.Entry B:Boeck, Wilhelm, and Sabartes, Jaime. Picasso. Abrams. 1971.Entry C:Boeck, Wilhelm, and Jaime Sabartes. Picasso. Abrams, 1971.Entry D:Boeck, Wilhelm, and Jaime Sabartes. Picasso: Abrams 1971. Fill in the following blanks with the correct form of preterite.1. ___ t el espectculo Empire? (mirar)2. Los estudiantes ____ para el examen del espaol. (Estudiar) 3. La vctima ____ la comisara durante la emergencia. (Llamar) Write a 3-paragraph essaying comparing and contrasting the standard of living in the the United States and in each of the other two countries you chose. Use data about per capita GDP and other factors to consider similarities and differences between the standard of living in all three countries.First, conduct research to learn more about the standard of living in each country. Look for information abouteducational opportunitiesliteracypollution, safety, and healthwork-life balanceequality or inequality between men and womenequality or inequality between different racial or ethnic groupsYou might wish to begin your research about the United States with this link.Take notes as you research. Remember to keep track of where you find information so that you can cite your sources.In your essay, describe similarities and differences between the standards of living in all three countries. Use per capita GDP and other facts and data from your research to support your ideas. Pls someone help hurry On December 31, 2019, Mass Construction Inc. signs a contract with the state of Massachusetts Department of Transportation to manufacture a bridge over the Merrimack. Mass Construction anticipates the construction will take three years. The company's accountants provide the following contract details relating to the project: Contract price $520 million Estimated construction costs $300 million Estimated total profit $220 million During the three-year construction period, Tri-State incurred costs as follows: 2020 $60 million 2021 $150 million 2022 $90 million Tri-State uses the percentage of completion method to recognize revenue. Which of the following represent the profits recognized in 2020, 2021, and 2022?a. $52 million, $312 million, $156 millionb. $12 million, $72 million, $36 millionc. $140 million, $140 million, $140 milliond. $30 million, $180 million, $90 millione. None of the above Is density independent of sample size? . You want to buy some underwear. Apackage of 8 costs $3.12. A package of 15costs $6.15. A package of 20 costs $7.60.Which package is the best buy? 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