# crystal

Newest questions posted by crystal-
## Math

The circumference of a circle, divided by its radius equals A. pi/2 B. pi C. 3pi/2 D. 2pi I got D, is that correct? -
## social studies

Plage could be found in all of these areas except: A. China B. Cuba C. Chile D. France -
## Math

mike can complete a project in 60 minutes, and if mike and walter both work on the project, they can complete it in 40 minutes. how long will it take walter to complete the project by himself? -
## math

Out of a pool of 234 people with lottery tickets, 120 of them are women, and out of those 120, 65 are older than 23, and out of those 65, 12 are married. What is the probability that the lottery winner will be a married woman older than 25? A. 2/39 B. -
## english

Anyone Familiar With The Story/Play The Merchant Of Venice By William Shakespeare Please Check My Answers Thank You. 1. which of the following elements of comedy are not used by Shakespeare in the merchant of venice? a.a clown like character b. puns -
## English

I need help with concision on these sentences. . So long as states are not bound by a national curriculum and standards, students will not receive the same quality of education across the United States. 4. Critical-care nursing is stressful due to the fact -
## miles

the Boggs family paid 49.75 for their car rental. how many miles did they drive? (p.s. it is based off the same question I sent before it) -
## math

a rental car company charges a fixed fee of 30$ plus $0.05 per mile. let c represent the total cost of renting a car and driving it m miles. Write a equation that could be used to find the total cost of renting a car and driving it any number of miles. -
## Math

A librarian is expanding some sections of the city library. He buys books at a special price from a dealer who charges one price for any hardback book and another price for any paperback book. For the children's section, Mr. Shah purchased 31 new hardcover -
## Quadratics

So there's a right angled triangle and it has another small triangle on the top and the right side is 10cm long (including the side of the small triangle). 10-x is bc. I know the base is 3+2xcm. [bc] is the same as [be]. [cd] is 3 cm more than twice the -
## Geometry

To the nearest tenth, find the perimeter of ΔABC with vertices A(2,4), B(-2,1) and C(2,1). Show your work. -
## Math- PLEASE HELP. I DONT UNDERSTAND THIS QUESTION

What is the formula for base, b, of a triangle if the area is A and the height is h? -
## science

A bus starts from rest and attains 40km/hr velocity after 10sec . Calculate the acceleration of bus in m/sec2 -
## Science

Identify the following types of tissue as connective, muscle, nerve, or ephithelial: A. Tendon - Muscle B. Sciatic Nerve- Nerve C. Fat - ? D. Blood Vessel - Nerve E. Skin - Ephithelial F. Ligament - ? G. Bone - ? H. Muscle - Muscle ( I got them all except -
## Science

Identify the following types of tissue as connective, muscle, nerve, or ephithelial: A. Tendon - Muscle B. Sciatic Nerve- Nerve C. Fat - ? D. Blood Vessel - Nerve E. Skin - Ephithelial F. Ligament - ? G. Bone - ? H. Muscle - Muscle ( I got them all except -
## Math- PLEASE HELP!! I DONT GET THIS QUESTION!!

Molly bought two sweaters for $30 each and three pair of pants for $25 each. She had a 20% off coupon for her entire purchase. Model and write an expression for the amount of money Molly spent. State your answer in a complete sentence. -
## Spanish

How do you say and conjugate the word "make" in Spanish? -
## Plate tectonics

Explain how earthquake sizes are connected to the three types of plate boundaries -
## chemistry

Calculate the pH values and draw the titration curve for the titration of 500 mL of 0.010 M acetic acid (pKa 4.76) with 0.010 MKOH. Calculate the pH of the solution after 490 mL of the titrant have been added. Calculate the pH of the solution after 500 mL -
## math

Martha read 1/6 of her book on Saturday and 5/12 of her book on Sunday how many more pages do she have to read -
## Mathematics

Marsha has $60.00 . 2/3 of marsha's money is equal to 1/2 of Joanne's money .how much money does Joanne have ? -
## Math

At the beginning of soccer practice a water cooler contained 5 gallons of water. At the end of practice the water cooler is only 1/4 full. How many gallons of water are in the cooler at the end of practice? Explain -
## math 1025

find the interest. round to the nearest cent $290 at 8.8% for 3 months -
## chemistry

2C2H6 + 7O2 --> 4CO2 + 6H20 given 7.5 X 10 to the 3rd of C2H6 how many grams of CO2 is emitted the 7.5 x 10 to the third is 7500 what do i do to figure out the rest -
## Chemistry

Phthalic acid, H2C8H404, is a diprotic acid used in the synthesis of phenolphthalein indicator. Ka1= 1.2x 10^-3, and Ka2 = 3.9 x 10^-6. a) Calculate the hydrongen-ion concentration of a .015 M solution. b) What is the concentration of the C8H4O4^2- ion in -
## Math

A recipe for 2 1/2 dozen cookies calls for 1 7/8 cups of flour. How many cups of flour are needed to make 1 1/3 dozen cookies? -
## 7th grade math

A plumber has a very long piece of pipe that is used to run city water parallel to a major roadway. The pipe is cut into two sections. One section is 12 ft. shorter than the other. If 34 of the length of the shorter pipe is 120 ft., how long is the longer -
## Maths

Find the Amount when... P=1000 N=2 1/2 years R=10% Compounded half yearly -
## Algebra

The perimeter of a rectangle is 80 in. The length is 6 inches more than the width. What are the dimensions of the rectangle -
## Physics

A student travels 300m towards North and then 400m towards East to reach his school. Calculate the distance of his school from his home. -
## Riddle

I have two bodies, joined as one; Watch this trick: Ill flip, stand still, and run. What am I? -
## Math

What means the samethings as 12ten and 17 ones -
## math

Mdm Lee gave Nathan and Jasper some money on Friday.On Saturday,Nathan gave 1/3 of the amount he had to Jasper.On Sunday,Jasper gave 1/3 of the amount he had to Nathan.In the end,Nathan had $96 and Jasper had $120.How much did each of them have at first? -
## stat

** I already finish these questions Can you answer so I can compare my final answers w/ yours.** Suppose that a principal of a local high school tracks the number of minutes his students spend texting on a given school day. He finds that the distribution -
## algerbra

The function h = -t2 + 95 models the path of a ball thrown by a boy where h represents height, in feet, and t represents the time, in seconds, that the ball is in the air. Assuming the boy lives at sea level where h = 0 ft, which is a likely place the boy -
## Algebra

a spinner used for a game is divided into sections: yellow, green, and orange. Janie spins the spinner 20 times. The spinner lands on green 8 times. What is the experimental probability that the spinner does not land on green? -
## Trig sum please help

Write the augmented matrix, and then solve the system, using Gauss Jordan elimination on the augmented matrix. x + 2y - z = 4 -2x + y - 4z = -6 4x - 3y + 2z = -10 -
## Evaluate sum please help

Evaluate the sum ∑3 =0 (-1)k × 2k-1/2k-1 6 -
## trigonometry

A plane flies due south from an airport for 92 miles, and then turns and goes S63°W for 50 miles. How far is the plane from the airport (to the nearest tenth of a mile)? What direction is the plane from the airport (to the nearest tenth of a degree)? -
## Math

A statement Sn about the positive integers is given. Write statements S1, S2, and S3, and show that each of these statements is true. Show your work. Sn: 2 + 5 + 8 + . . . + ( 3n - 1) = n(1 + 3n)/2 -
## Math

Interest is a concept familiar to most people: every credit card in existence has a term called annual percentage rate (APR), which is an interest rate. Suppose you charged $1,000 to a credit card that has a minimum payment each month equal to the interest -
## finite

You select 9 cards randomly from a deck of 52 cards. What is the probability that all of the cards selected are face cards (i.e. jacks, queens, or kings)? -
## Typo (Test Marked)

Okay i had a typo i for got to add stars..i had emojis next to it that didn't show up What number is 73% of 215? (1 point) 215 = 0.73n n = 0.73 × 215 * 0.73 = n × 215 215 = 73n 2. What percent of 94 is 23? (1 point) n/94 = 23/100 23/94 = n/100 * 94/n = -
## Math

If a bag contains 12 apples, 4 bananas, and 8 oranges, what is the part to whole ratio of bananas? -
## 6 th grade SS

Can you check my answer What do you think the political and economic future of Cyprus will be like? The future of Cyprus will be a future governed by a new and different governmental and political structure. Like focusing on the economy instead of the -
## math

Determine whether the sequence is a Fibonacci-type sequence. If it is, determine the next two terms of the sequence. -4, 5, 1, -3, -2 -
## Physics

So this is the problem: A comet is in an elliptical orbit around our Sun. At its point of closest approach, it is moving at 6.3x10^4 m/s and is 4.2x10^10m away from the sun. When it is at the farthest distance, 7.5x10^12m away, how fast is it going? This -
## Math

Trina works after school and on weekends. She always works three days each week. This week she worked 2 3/4 hrs on Monday. 3 3/5 hrs on Friday and 5 1/2 hrs on Saturday. Next week she plans to work the same number of hrs as this week but will work the same -
## pre-cal

find the value of K such that (x+1) is a factor of x^3-kx^2+x+5 -
## pre-cal

find the constant c such that the denominator will divide evenly into the numerator x^4+10x^2+c/x+i -
## pre-cal

Write a polynomial equation with integral coefficients that has 1/2 and 2i as solutions -
## PHYSICS

While following the directions on a treasure map, a pirate walks 25.2 m north, then turns and walks 4.4 m east. What is the magnitude of the single straight-line displacement that the pirate could have taken to reach the treasure? Answer in units of m. -
## math

hi im 33 years old and i have decided to go back and get my ged i don't understand order of operations (3+6).(5+4)divided by 3-7 i just started my ged classes lastnight can you help me ? -
## 6th grade math

Please explain: Ursula wrote the sum of 5.815 + 6.021 as a sum of two mixed numbers. What sum did she write? Compare the sum of the mixed numbers to the sum of the decimals? Please explain. -
## Math

Hi(-: A newspaper editor wants to know whether people who buy the newspaper like the paper’s new format. He prints an alphabetical list of all the employee names and asks every fifth person on the list. Is the sample likely to be biased or unbiased? -
## physics

A bicycle tire is 82 inches across and has a diameter of 26 inches. -
## 6th grade math

2 line segments intersect to form an angle that has a measure of 50.7 degrees. What is the measure in degrees of an angle that is supplementary to this angle? -
## math

Michael ate 1/4 of a pizza and his brother ate 3/8 of the same pizza . How much of the pizza was left? -
## HIS202

During the latter part of the 19th century, Republicans were particularly strong in the _____ states? -
## chemistry

Predict if a precipitate will form when 20.00 mL of the 50% saturated solution is mixed with 20.00 mL of 0.0100M of the following solutions.? the saturated solution is : BaCO3, it has the Ksp of 5.1 x 10^-9 the solubility is 7.1 x 10^-5 M. I don't know how -
## math

Brown earns a dollar for every candy he sells. If he sells 30 candies, how much will he earn? Please show me the work. -
## US History

Which of the following 19th century developments most undermined the racial philosophy John C. Calhoun Outlined in the excerpt from his 1848 Senate speech? A The establishment of the Ku Klux Klan B The enforcement of the black codes C. The suspension of -
## Physics

A runner moving at a speed of 7.7 m/s rounds a bend with a radius of 21 m. What is the centripetal acceleration of the runner? My teacher doesn't explain anything very well and I don't understand how to figure it out. -
## math

A biker traveling with a velocity of 80 feet per second leaves a 100 foot platform and is projected directly upward. The function modeling the projectile motion of the biker is s(t)=-16t^2+80t+100,where s(t) is the height and t is the number of seconds the -
## 2nd grade math

It is greater than 43 and less than 52. If you add the digits, the sum is 8. Write the number word -
## math/ unit rates

A fertilizer covers 5/8 square foot in 1/4 hour. -
## math/ unit rates

A garden snail moves 1/6 foot in 1/3 hour -
## math/ unit rates

Kenny reads 5/8 page in 2/3 minute -
## unit rates

Julio walks 3 1/2 miles in 1 1/4 hours -
## Algebra II Honors

There are some interesting special cases in which the graphs turn out to be parallel, perpendicular, or coincident with the coordinate planes or axes. Sketch a graph of each of the following equations by drawing their traces as in Problem 1. Then tell what -
## Accounting

Dr. Rees: Ruth, good to see you again. Why didn’t you call me when you were in Denver? We could have had dinner together. Dr. Turner: Actually, I never made it to Denver this year. My husband and kids went up to our Vail condo twice, but I got stuck in -
## Maths

Alison discovered that she had spent 2/5 of her money, leaving her with £21. What amount of money did she originally possesses? -
## managerial economics

An article in Business Week reported the discovery of a new processing technology that makes it economically feasible to turn natural gas into liquid petroleum that yields superclean gasoline, diesel fuel, or any other product derived from crude oil. This -
## History 12

What does lenin have to do with Tsarism, World War 1, March revolution and the provisional government, November Revolution, the civil war, War Communism, national Economic Policy, Trotsky, Stalin, and the Comintern? -
## Math

Loon lake has a "killer plant" problem similar to Ghost Lake. Currently, 5000 square feet of the lake is covered with the plant, The area covered is growing by a factor of 1.5 each year. Complete the table to show area covered by the plant for the next 5 -
## Math

Tressa's closet is 5 feet long, 4 feet wide, and 7 feet high. What is the volume of Tressa's closet. A. 140 feet B. 140 square feet C. 140 cubic feet -
## physical

a 50 kg object moving at 12 m/s has a momentum of 600 kg times g m/s . what is the mass of an object moving at 4 m/s that has the same momentum? -
## physical

what is the size and direction of the final velocity of the two cars when a 0.4 kg toy train car moving forward at 3 m/s collides with and sticks to a 0.8 kg toy car that is traveling the opposite direction of -2 m/s -
## Chemistry

Magnesium metal reacts with phosphoric acid to produce hydrogen gas. If 50 g of phosphoric acid is used, how much magnesium metal is needed? How much hydrogen gas is produced? -
## Statistcal Analysis

I need some help with figuring out the ratio-to-moving average. Can someone help me? Here's the problem: Sales of roof material, by quarter, since 1994 for Carolina Home Construction, Inc. are shown below (in $000): Quarter Year I II III IV 1994 210 180 60 -
## Math

A ball pit contains 10 yellow balls and 14 green balls. What is the probability of randomly picking 3 green balls (replacing them), from the pit? 3/24 -
## Math

104 students responses 21 liked sledding as their favorite winter activity if 500 people had. Responded, how many would have been expected to list sledding as their favorite winter activity? Round to the nearest whole person -
## statistics

I really need help with my statistical analysis... i cant understand it. Here are the questions A sample group was surveyed to determine which of two brands of soap was preferred. H0 :p = 0.50; H1: p is not equal to 0.50. Thirty-eight of 60 people -
## Math

How much must be invested to have 25,000.00 after 5 years in an account drawing 7% interest compounded continuously? -
## statistics

I have just a couple questions I have trouble understanding... can someone please help me? The data below indicate the rankings of a set of employees according to class theory and on-the-job practice evaluations: Theory 1 7 2 10 4 8 5 3 6 9 Practice 2 8 1 -
## Physics

A soccer ball iskicked with an intial horizontal speed of 6 m/s and initial vertical speed of 3.5 m/s. Assume that the projection and landing height are the same, and neglect air resistance. Calculate the following a) the ball's projection speed and angle -
## math

Charlie has agreed to mow his neighbor’s lawn each week and will baby-sit some hours. If he makes $100 or more each week, his parents will charge him rent. How many hours should Charlie agree to baby-sit each week to avoid paying rent? -
## Math

In 1990, the population of Cheyenne, Wyoming, was 73,142. By 2000, the population had increased to 81,607. Write and solve an equation to find, the increase in Cheyenne’s population from 1990 to 2000. Mercury’s surface temperature has a range of 600 -
## math

The pressure on a scuba diver at sea level is 14.7 pounds per sq inch (psi). The pressure increases 0.445 psi for each foot of depth. Suppose the pressure on a diver is 41.4 psi. How deep is she? -
## math

25/5 - (-4)*2 / 9 -
## Math

how did farmer john find his missing cow? How did the cow get over the block of hay? -
## math

You are hosting a cookout for 24 people and are supplying the main dishes and several sides. You must take a trip to the grocery store in order to purchase all of the items you need. You know that hotdogs are $1.50 per package and there are 8 hotdogs in -
## Psychology- Assessments

In comparison to the ______________ model, the _____________ model assesses the complexities of learning disabilities better than a one-step process where an individuals is tested once and diagnosed. a. discrepancy; Response to Intervention b. Response to -
## Psychology-Assesment

According to Cattell, a person trying to solve an entirely new kind of problem is using his or her__________, whereas a person working on a task that he or she knows well is using his or her ________ a. general ability, specific ability b. intelligence B, -
## psychology- assessments

The fact that online instruments may not be available to individuals who do not have access to computers and/or the Internet raises concerns about the _________ of online assessments. a. content b. scoring c.norming groups d. interpretation -
## Statistic/Psychology

Joe had a score of 72 on the Counseling Aptitude Scale, and the standard error of measurement of the scale is 3. Where would we expect Tom's true score to fall 99.5 percent of the time? a.71 to 73 b. 69 to 75 c. 66 to 78 d. 63 to 81 -
## statistic/Psychology

According to classical test theory if the observed variance of a test is 50 and the true variance is 40 what is the estimated reliability of the test? a. 0.40 b. 0.50 c.0.80 d. 0.90 -
## statistic/Psychology

According to classical test theory, if the observed variance of a test is 50 and the true variance is 40, what is the estimated reliability of the test? a. 0.40 b. 0.50 c. 0.80 d. 0.90 -
## Statistic/Psychology

If the correlation between one's interest in statistics and being a "fun date" was -0.70, it would mean that: a. The higher someone's interest was in statistics, the more likely it would be that he or she is a fun date b. The higher someone's interest was -
## Statistic/Psychology

In using repression to predict an individuals performance on the criterion based on his or her score on the instrument, the prediction is least accurate when the correlation is: a.-1.00 b. 0.00 c 0.50 d. 1.00