Questions Asked on
March 6, 2018

Precalculus
Which of the following are trigonometric identities? Select all that apply (there are 3 answers). A cos^2(theta)=sin^2(theta)1 B sin(theta)=1/csc(theta) C sec(theta)=1/cot(theta) D cot(theta)=cos/sin(theta) E 1+cot^2(theta)=csc^2(theta)
asked by Statten 
Math
How to convert y^28x16=0 to polar form
asked by Tony 
chem
A hot air balloon is filled with 1.51 × 106 L of an ideal gas on a cool morning (11 °C). The air is heated to 103 °C. What is the volume of the air in the balloon after it is heated? Assume that none of the gas escapes from the balloon.
asked by Rachel 
Health PLZ ANSWER ASAP
1. Shortterm effects of smoking include (select all that apply) A. bad breath ** B. yellow teeth ** C. feeling tired D. cancer 2. Oxygen enters the blood in the A. bronchi B. pharynx C. larynx D. alveoli ** 3. A respiratory disorder in which the bronchi
asked by Kylani 
Geometry
1. The Seattle Space Needle is 604 feet tall. A model for the building is 48 inches tall. What is the ratio of the height of the model to the height of the actual Space Needle? A. 151:1 B. 151:12 C. 1:151 D. 12:151 If anyone knows the rest of the answers
asked by :P 
geometry
What is the ratio for the surface areas of the cones shown below, given that they are similar and that the ratio of their radii and altitudes is 4:3?
asked by joel 
math
What are two decimals whose product is close to 10?
asked by Ashley 
Science
If an organism is heterozygous for a particular trait, the organism. A.has the same allele on both chromosomes in a chromosome pair. B.has different alleles on the chromosomes in a chromosome pair.* C.is missing alleles on the chromosomes in a chromosome
asked by davonte 
Math
Suki is trying to solve the equation 62.75 + x = 92. Determine whether Suki could use each statement below to reason and solve the equattion a. Suki can add 62.75 to both sides of the equation. b. Suki asks,"What number can be added to 62.75 to 92?" c.
asked by Ethan Camp 
math
find the measure of x in the triangle. show all your work. it is a 65 by 65
asked by big red 
Advanced Algebra
Kendra’s income put her in the top tax bracket (35%) last year. During the same year, she earned $760 in dividends and $490 in coupons on a corporate bond. Three years ago, she purchased a common stock for $835. She sold the same stock last year for
asked by Steve 
Math
David and Ted are walking a trail. Ted walks 3.1 kilometers farther than David. Part a. Write an equation for the number of kilometers David walks, d, if Ted walks 5.4 kilometers Part b. Write an equation for the number of kilometers that Ted walks, t, if
asked by Joey is nutellabread476 
precalc
prove the identity : cos3x =4 cos^3x3cosx
asked by Anonymous 
English
Select the letter of the pair of words that expresses a relationship most like the relationship expressed by the following pair: 1. oneness: unity a. workout : perspire b. day : hour c. premiere : debut d. gardening : trowel e. ring : wedding (E) 2.
asked by Lemus7 
Math
Samantha works part time at a store where she earns $462.30 each month. Write an expression that can be used to find the amount Samantha earns working any number of months, m.
asked by 6up 
algebra 2
The graph of f(x)= (x^22x8)/(x+6) has which of the following? a. point discontinuity b. vertical asymptote c. both of the above d. neither of the above I'm stuck between b and c. I know that the vertical asymptote is x=6. Help?
asked by huncho jack 
GEOMETRY helpppp
In a circle with a radius of 6 m, an arc is intercepted by a central angle of 7π/4 radians. What is the arc length? Use 3.14 for π .
asked by Uliseeu 
Science
1. A body is moving along a circular path of radius R. What will be the distance covered and the displacement of the body after half a revolution? 2. A person starts from his house and travels a circular distance of 15 km around the walled city before
asked by Deepak 
Business Management
1. A lower value of the U.S. dollar means that A. the American dollar is worth more when purchasing a foreignmade good. B. a dollar would be traded for less foreign currency than normal. C. the American dollar isn’t backed by gold. D. the dollar can’t
asked by Alexa 
Math
The graph represents the height y, in feet, above the ground of a golf ball x seconds after it is hit. The maximum height of the golf ball occurs at x = 2. For up to 2.5 s after the ball is hit, its height is increasing. The maximum height of the golf ball
asked by crambles 
algebra
Write a compound inequality that represents the following phrase. Graph the solutions. all real numbers that are between negative 7 and 4
asked by cole 
Circuits2
Three impedances zL=3+j4 ohms, zC=4j4 ohms and zR=0+j3 ohms are connected in parallel. solve for the power factor of the combination.
asked by Student 
physics
23.1 .. A point charge q 1 = +2.40 mC is held stationary at the origin. A second point charge q 2 = 4.30 mC moves from the point x = 0.150 m, y = 0 to the point x = 0.250 m, y = 0.250 m. How much work is done by the electric force on q 2 ?
asked by gopi 
Math
There is a shelf in the library for the books by authors with the last names of Amster, Anderson, Axelson, Bannister, Baxter, and Bayer. The following table shows the number of books that the library has by these authors and how many of those books are
asked by Jay 
5th grade Math
When finding the mass of an object, you determine which of the following? a. quantity of matter in the object b. its weight c. its height d. its length I picked A, but it was marked wrong. So, I guess the more correct answer is B?
asked by Jared 
Math
Radio signals travel at a rate of 3x10^8 meters per second period how many seconds will it take for a radio signal to travel satellite to the surface of earth if the satellite is orbiting at a height of 4.2x10^7 meters? (Hint: Time is distance divided by
asked by Valhalla 
Math
Lance wants to find the total length of three boards he use the special 3 1/2 + 2 + 4 1/2 how can Lance rewrite the expression using both the associative and commutative properties of addition
asked by Kenzie 
Chemistry stoichionetry
the average human requires 120.0 grams of glucose (C6H12O6) per day. How many grams of CO2 (in the cellular reapiration reaction) are produced from this amount of glucose? the balanced cellular respiration reaction is: C6H12O6 + 6 O2 = 6 CO2 + 6 H2O
asked by Kade 
Chemistry
Given the following information determine the reaction Gibbs energy for the formation of silicon dioxide at 298 K Si(s)+O2(g) →SiO2(s) ΔfH°(Si(s))=0 kJ mol1, S°(Si(s))=18.8 J mol1 K1 ΔfH°(O2(g))=0 kJ mol1, S°(O2(g))=205.0 J mol1 K1
asked by Aine 
Chemistry
Suppose that a device is using a 5.00mg sample of silicon that is doped with 1 × 105% (by mass) phosphorus. How many phosphorus atoms are in the sample?
asked by Angel 
Math
A person wishes to invest R120 000 in three types of bonds: municipal bonds (MF) paying 6% p.a., bank investment certificates (BF) paying 7% p.a. and highrisk bonds (HF) paying on average 10% p.a. For tax purposes, the person wants the amount
asked by Tshegofatso 
MATH
A. triangle ABC is reflected over the y axis. What are the coordinates of the reflected triangle? B. Describe in words what happens to the x coordinates and y coordinates of the original triangle's vertices as a result of this reflection.
asked by annonymus 
Trigonometry
An airplane is traveling at 650 mph on a heading of 255°. The wind is blowing from a bearing of 320° at 28 mph. What is the ground speed and the actual bearing of the airplane? P.S. I prefer the law of cosine/sine method
asked by John 
AP Physics
What is the potential energy of an electron and proton in a hydrogen atom if the distance between them is 5.3*10^11? ANSWER k=9*10^9 Q=1.6*10^19 q=1.6*10^19 Ue=? Ue=KQq/r Ue=4.4*10^18 j
asked by SK 
language arts
in the poem “cynthia in the snow” by gwendolyn brooks. what does the word “whirs” mean in line 7. a. short turning b. slow swish c. long creak d. fast alarm
asked by Alba 
chem
Consider the reaction when aqueous solutions of sodium nitrate and ammonium sulfide are combined. net ionic equation?
asked by Leo 
Chem
A sample of an ideal gas has a volume of 3.20 L at 14.80 °C and 1.50 atm. What is the volume of the gas at 21.80 °C and 0.989 atm?
asked by Rachel 
Maths
What is the product of 2.5 × 10−15 and 3.9 × 1026? 6.4 × 10^1 9.75 × 10^11
asked by Diana 
physics
The illustration for this problem can be seen at screenshots(dot)firefox(dot)com/atwXACAA9akaoAji/null The army is testing out a new prototype artillery cannon with an uncommonly high muzzle velocity of 1000 m/sec . The design bugs haven't been fully
asked by unowen 
English
1. Select the letter of the choice that best completes the meaning of the following sentence: In the early 1900s, Americans who _____ reform and _____ new laws were called progressives. a. denounced...espoused b. advocated...hindered c.
asked by nolasx 
maths
The speed of light is about 2.99x10^8 m/s. If a rocket travels at onefifth the speed of light, find its speed in km/h (in scientific notation correct to 2 significant figures)
asked by Jake 
Maths Algebra Application Practice
In a TV trivia show, a contestant receives 500 points for a correct answer and loses 200 points for an incorrect answer. Let c represent the number of correct answers and i represent the number of incorrect answers. What is the expression for the
asked by Liew 
Trigonometry
An airplane with a speed of 485 km/h is traveling with a heading of 83.5°. The wind velocity is 38 km/h in the direction of 191°. Find the ground speed of the airplane. P.S. How do you solve this problem by only using the law of cosine/sine method?
asked by John 
Calculus
The Department of Agriculture is monitoring the spread of mice by placing 100 mice at the start of the project. The population, P, of the rats is expected to grow according to the differential equation dP/dt equals the product of 0.04 times P and the
asked by Anonymous 
Geometry
A model is made of a car. The care is 5 feet long and the model is 8 inches long. What is the ratio of the length of the car to the length of the model? 8:5 15:2 2:15 5:8 My answer is 2:15
asked by Lost 
Chemistry
How many grams of carbon dioxide gas are formed when 11.9g of liquid hexane (C6H14) is combusted?
asked by Felyisha Urioste 
Math
Please help me with this riddle please! Why is a party like pouring oil into a car?
asked by Someone 1234 
English grammer
Use the conjunctions as,for,since,while in the sentence 1.the sun was very hot.it was still summer. 2.she can find the way.she is so clever. 3.he began to get frightened.it was getting dark 4.mona read a book.the baby slept.
asked by Anonymous 
math
Five more than 6 times a certain number is 29. Find the number.
asked by inder 
Math
"Point B (4,0) is rotated 45 degrees clockwise about the origin. Write the exact coordinates of B'."
asked by Mikayla 
language arts
how many syllables are in each line of the poem “silkweed” by philip henry savage? a. 4 b. 6 c. 8 d. 10
asked by Mario 
Trig
the graph of an inverse trigonometric function passes through the point (1,pi/2). which of the following could be the equation of the function Y=Cos^1 x Y=cot^1 x Y=Sin^1 x Y=Tan^1 x
asked by Danny 
science
What is equinox?
asked by sarojee 
language arts
which of these sentences shows the following meaning of the word content: appease or gratify? a. i think the content of that poem was depressing. b. the grade on his test made chang feel content with his effort. c. computers are able to score essays for
asked by Santos 
Chemistry
An apple pie needs 10 large apples, 2 crusts (top and bottom), and 1 tablespoon of cinnamon. write a balanced equation that fits this situation. How many apples are needed to make 25 pies?
asked by Lexi 
Math
In the center of the library is a fountain that holds 500 gallons of water. For every 25 gallons of water they must add 1/4 cup of water treatment. How many cups of water treatment must they add to the fountain to treat the 500 gallons of water?
asked by Joey 
Advanced Algebra
What is the rate of return on a $10,000 bond purchased at $8,750 with a 10% coupon? The 10% coupon guarantees a return of $1,000 on the nominal value of the bond, which is $10,000. The bond's actual sale price was $8,750, so the $1,000 coupon must be
asked by Steve 
chemistry
To what a temperature must be given mass of oxygen at 0degree celcius be heated so that both its volume and pressure will be doubted?
asked by joy chiamaka 
Social studies
Explain the similarities and differences between corporate farms and mixedcrop farms? PLEASE HELP ME THIS IS THE ONLY QUESTION IM HAVING TROUBLE WITH THIS IS ALL I NEED
asked by Dagoods 
English
1. Select the letter of the underlined sentence part that contains an error in grammar or usage. If the sentence contains no error, select (E). The Endangered Species Act that was passed in 1966, made it illegal (A) (B) for people to kill, either for
asked by cristal 
MATH!!! URGENT!!!!
The probability of making a 6 ft putt is 60%. How many times should you except to make it if you putt the following number of times. 5 times 10 times 30 times 160 times
asked by Reghan 
math
The square root of 76 is between what two numbers?
asked by anon 
math
I'm still working on my car project and wondering if you could check this this question says: If x represents the number of months and P represents the total paid for the car, write a formula that describes the total amount you have spent on the down
asked by carly 
Chemistry
When one mole of CH3OH (l) forms from its elements at 1 atm and 25 degrees C, 238.6 kJ of heat are released, and 35.2 kJ are released when one mole of the gas condenses. How much heat is released when one mole of CH3OH (g) forms from its elements at these
asked by Alice 
maths literacy
think of a number ,add4 multiply by 7and subtract 10
asked by Nthabiseng 
Math urgent
I'm having trouble with my practice in connexus, can someone review with me how to find the value of x in a polygon. If I don't respond right away give me a one minute I have crappy wifi XD
asked by DA_COOL_DUDE 
maths prove help asap
plz help 1.for any 2 nonzero integers x and y there exist a unique integer q and r called the quotient and remainder respectively such that x=yq+r where
asked by mat 
ELA
Which word in the sentence is an adjective The chicks scurried across the grassy field. A: chicks B: scurried C: across D: grassy
asked by Aye 
Math
Identify all the sets to which the number 0.46517 Repeating belongs. A. rational number B. irrational number*** C. integer, rational number D. whole number, integer, rational number Pls Help me.Thx
asked by Tech_Nic 
GEOMETRY
In a circle with a radius of 6 m, an arc is intercepted by a central angle of 7π/4 radians. What is the arc length? Use 3.14 for π .
asked by Uliseeu 
math
5(x + 10) + x a. 6x +15 b. 5x + 15 c. 6x + 50 d. 4x  50 whats the answer im rlly confused
asked by kiara 
Ela
Which word in the sentence is an adverb Three slimy snails crept nearby A: three B: nearby C:slimy D: crept~ I choose this one
asked by Aye 
Math
Needing some help with how to set up the problem please. Thank you. Rashida has 3 blouses: red, white, and pink. She has 2 skirts: blue and black. She has 2 pairs of shoes: red and white. What is the probability that Rashida selects an outfit at random
asked by Steve 
math
0.2x0.8
asked by jake 
Algebra
3p+3=2p+4.5 bar models I just need help understanding how to do it.
asked by Emily 
math
You work in a local department store that is having an annual 'White Sale' with 1 4 off all sheets and towels. What is this price reduction as a percent?
asked by dysha 
Maths
This is more of a question of instructions than it is solving. On my page, it has a semicolon and a number behind the question. For example, 1 is x+24= 36;x=_____ I don't see how the semicolon or number and variable are needed in this equation. Please help
asked by Maya 
Math
I'm stumped on this problem. My math teacher stated to write multiplication tables from 1 to 6 and then solve. I'm not even sure where to start after I finished writing the tables. At the same time, Marisol rolls 2 number cubes that each have sides labeled
asked by Lisa 
Math
At a store, 7 cartons of whole milk cost $10.50 and 5 cartons of fatfree milk cost $5.00. How much would it cost to buy 3 cartons of whole milk and 2 cartons of fatfree milk?
asked by The Devil Cat 
Social Studies Study Guide
Please check my son's answers. I don't want him to memorize wrong information. Stars by his answers. Thank you for being here! 1. NAFTA is a trade agreement between the United States, China, and India. **the United States, Japan, and Mexico. the United
asked by Mama Teacher 
Math
sam decides to build a square garden if the area of the other garden is 9x^2 24x +16 square feet what is the length of one side of the garden
asked by Helpmelol 
American Government Please Check
1. In relation to the balance of power, why is the evolution of the position of majority leader necessary? Select all that apply. (2 answers) a. because the power established by the Constitution of the president of the Senate does not establish a strong
asked by dilly dally 
Chemistry
'Describe the difference in intermolecular forces between 2methyl3hexanone and 5methyl3hexanol and how this affects the properties of the substances.' I'm looking at the molecles on Chemspider, and I want to say that because 5methyl3hexanol has a
asked by SarahF275 
English
1. The best way to improve listening comprehension is to a. take informal notes on what you hear. b. use complete sentences to take detailed notes of both main ideas and details. c. concentrate on listening to the speaker's transitions. (C) 2. Critical
asked by Jacob 
Science
I am doing a project right now and I'm kind of confused. I did an experiment and this is a question asked "Scientists changed the independent variable to learn about the Mpemba Effect. What did you learn from your results? Do you agree that the Mpemba
asked by Anonymous 
Math
We have the survey data on the body mass index (BMI) of 648 young women. The mean BMI in the sample was x¯=27.2. We treated these data as an SRS from a Normally distributed population with standard deviation σ= 7.4. Find the margins of error for 90%
asked by Mike 
chemistry
how many grams of chlorine are in 2.01 grams of TiCl4?
asked by Anna 
PreAlgebra
Find the volume of the rectangular prism? A23in3 B297in3 C318in3 D159in3 Find the volume of the triangular prism? A23in3 B297in3 C318in3 D159in3 Find the volume cylinder. A16,990mm3 B8,491mm3 C4,247 D2,369mm3 Find the volume of a cylinder with
asked by Octavia 
English
Read the following paragraph: The election of Danielle Meyer as senior class president has been a mixed blessing. While it's true that she has tried to keep open a dialogue between students and the school administration, she has been largely ineffective in
asked by leslie_55 
chemistry
You fill a balloon with 0.76mol of He gas at a temperature of 20 C. What is the pressure, in atm, exerted by the He molecules? Is this pv=nrt? and if yes is it 5.2?
asked by Cody 
English
Select the letter of the better thesis statement for the following essay topic: 1. Describe the domestic role of Saudi Arabia's government. a. In the 1980s rumors circulated that the Saudi government was developing its own arms industry. b. The main goal
asked by leslie_55 
random
How do you pronounce jiskha?
asked by huncho jack 
MATH
The graph of a trigonometric function oscillates between y=1 and y=7. It reaches its maximum at x= pi and its minimum at x=3pi. which of the following could be the equation of the function? A) f(x)=4 cos x/23 B) f(x)=4 sin x/23 C) f(x)=4 sin 2x3 D)
asked by Benji 
Discrete Mathematics
Prove (A1 + A2 +...+ An)^T = A1^T + A2^T +...+ An^T using Mathimatical Induction.
asked by David 
Maths
Ifsin=12/13,find the value of sin²_cos²/2sin2cosx1/tan²
asked by Sravya 
Math
A skier is trying to decide whether or not to buy a season ski pass. A daily pass costs $79. A season ski pass costs $400. The skier would have to rent skis with either pass for $20 per day. How many days would the skier have to go skiing in order
asked by Jeff 
english essay
essay on taking risks with examples containing Edward Jenner and Mother Teresa (need a thesis, intro, and conclusion, already got body paragraphs)
asked by Molly 
Physics
A basketball player makes a jump shot. The 0.650kg ball is released at a height of 1.80 m above the floor with a speed of 7.80 m/s. The ball goes through the net 3.10 m above the floor at a speed of 4.40 m/s. What is the work done on the ball by air
asked by A 
chemistry
Please balance magnesium sulfate and iron III acetate
asked by D 
math
Find two numbers x, and y that add to 30, and for which 2x^2 +5y^2 is a minimum.
asked by George 
tax
A dependent filing as single in 2017 has an income filing requirement of the greater of $1,050 or earned income plus
asked by hale 
Chem
A balloon is inflated to a volume of 7.0 L on a day when the atmospheric pressure is 765 mmHg. The next day, as a storm front arrives, the atmospheric pressure drops to 725 mmHg. Assuming the temperature remains constant, what is the new volume of the
asked by Rachel 
Advanced Algebra
I bought 200 shares of stock in June of 1999 for $8,562.00 and sold them in June of 2009 for $11,582.00. What is my rate of return? My answer is 35.27%
asked by Steve 
Math
The triangle inequality theorem states that the sum of the lengths of any two sides of a triangle is greater than the length of the third side. The lengths of two sides of a triangle are 15 ft and 27 ft. Find the possible lengths of the third side. The
asked by John 
Probability
The first card Jon draws from a standard deck is a face card (jack, queen, or king). He keeps this card and draws a second one. If he draws at random, what is the probability that Jon now has a pair of kings? Answer as a reduced fraction.
asked by PT 
science
How can we remove temporary as well as permanent hardness of water by permutit process?
asked by sarojee 
Algebra
An 11 foot ladder needs to be positioned so that the top of the ladder is 10 feet above the base of the outside wall of the house. How far should the bottom of the ladder be placed from the base of the wall?
asked by Bob Ross 
Math
In the Greenwich Public Library, about onetenth of the books are overdue when they are returned. An average of 580 books are returned to the library each day. About how many books could be expected to be returned on time each day?
asked by Xavier 
Math
Matter is in a liquid state when its temperature is between its melting point and its boiling point. Suppose that some substance has a melting point of negative 46.81 degrees and a boiling point of 357.63 degrees . What is the range of temperatures in
asked by Robert 
Texas history
Texas history In the 1920s oil joint which other two industries as the most important in Texas a cattle in lumber be caught turn and Caddo see current in manufacturing and he lumber in manufacturing
asked by Elyan 
exponential functions help please
hi i am stuck on this can someone please help me through it. Thanks. does the table represent an exponential function? X/1/2/3/4 Y/4/8/12/16 ikd?
asked by blank 
Math
Please help IF I am right or not Which of the following correctly simplifies the expression 3 to the power of 2 multiplied by 5 to the power of 0 whole over 4, the whole squared.? 3 to the power of 2 multiplied by 1 whole over 4, the whole squared. = 3 to
asked by Diana 
Math
In a class of 20 students, 40% are boys. Twentyfive percent of the boys and 50% of the girls wear glasses. How many students wear glasses?
asked by Jonathan 
technology
what is the multiple source test
asked by cda 
chemistry
To what temperature must a given mass of oxygen at 0degree celcius be heated so that both its volume and pressure will be doubted?
asked by joy chiamaka