# Isabella

Popular questions and responses by Isabella-
## CHEMISTRY

Hello there! I was wondering if you could check my answers for me? I was having trouble and I finally understand. 1. Indicate the oxidation number of carbon and sulfur in the following compounds. A) CO= +2 C) Na2CO3= +4 E) CH4= -4 G) SO2= +4 I) Na2SO4= +6

*asked on September 9, 2015* -
## Math

a truck can be rented from company A for $100 a day plus $0.60 per mile and company B charges $50 a day plus $0.80 per mile to rent the same truck. Find the number of miles in a day at which the rental costs for company A and B are the same.

*asked on October 4, 2014* -
## geometry

The endpoints of line segment MN are M (-3,-9) and N (4,8). What is the approximate length of line segment MN??

*asked on August 30, 2011* -
## Chemistry

2C10H22 + 31O2 = 20Co2 + 22H2O What kind of reaction is this?

*asked on February 19, 2012* -
## Physics

During a baseball game, a batter hits a high pop- up. If the ball remains in the air for 6.0s, how high does it rise? Hint: calculate the height using the second half of the trajectory

*asked on September 19, 2012* -
## Math

Using 6 as one of the numbers, write a fact family with only two facts. 6 x 7=42 42/7=6 Is correct my answer?

*asked on May 16, 2012* -
## math

Juno is taking a taxi. The table represents a linear function and shows the amount she owed after various numbers of miles traveled. Is the rate of change 2.25? Amount Juno Owed for a Taxi Miles Amount Owed (dollars) 1 2.5 2 4.75 3 7 4 9.25 5 11.5 Yes,

*asked on November 20, 2019* -
## Algebra

A restaurant bill of $2.85 was paid using quarters and dimes only. If twice the number of quarters is 6 less than 4 times the number of dimes, how many quarters were used?

*asked on February 19, 2019* -
## Chemistry

Hello there! I was wondering if you could check my answers for me? I was having trouble and I finally understand. 1. Indicate the oxidation number of carbon and sulfur in the following compounds. A) CO= +2 C) Na2CO3= +4 E) CH4= -4 G) SO2= +4 I) Na2SO4= +6

*asked on September 9, 2015* -
## Physics

1. How does displacement change with time for a falling object? How might you describe the mathematical relationship between the distance and time of a falling object? Explain the answer using your data, graphs, and kinematic equations.

*asked on January 15, 2013* -
## chem-Am I Right????

For 0.10 M ZnCl2 and 0.10 M KAl(SO4)2, find:? a) spectator ions (if any) b) ions expected to hydrolyze (if any) c) net ionic equation for hydrolysis d) expression for equilibrium constant (Ka or Kb) e) value of Ka or Kb My answers are: a) Cl- ; K+ ; SO4^2-

*asked on October 19, 2010* -
## Social Studies

What is the national bird of Cameroon?

*asked on November 29, 2007* -
## Math 12

How do you solve -6[cot(2pi/3)-cot(pi/3)]?

*asked on February 28, 2016* -
## English

Reread the following paragraphs from King's letter, paying attention to the way that he structures his ideas: Paragraph 2 of 12 In any nonviolent campaign there are four basic steps: (1) Collection of the facts to determine whether injustices are alive;

*asked on December 4, 2015* -
## Math calculus 2

Let S be the region of the xy-plane bounded above by the curve ((x^3)*y)=64, below by the line y=1, on the left by the line x=2, and on the right by the line x=4. Find the volume of the solid obtained by rotating S around (a) the x axis (b) the y axis (c)

*asked on February 15, 2018* -
## Calculus

Use a Linear Approximation to estimate sin(64∘)−sin(60∘)≈

*asked on November 5, 2017* -
## Algebra

Write an expression that is equal to 3x2 1/4

*asked on January 14, 2017* -
## math

Helga's summer job put her in charge of the local soccer and basketball programs. To get ready, she ordered 50 balls, making sure there were 10 more soccer balls than basketballs.

*asked on September 7, 2016* -
## Math

Find the 8th term of an exponential sequence whose first term is 3 and whose common ratio is 2

*asked on March 1, 2016* -
## Physics

1. A steam engine converts 150 kg of water completely to steam. The process involves transfer of 4 x 10^8 J as heat. If steam escaping through the safety valve does 2 x 10^8 J of work against outside atmosphere, the net change in the internal energy is: a.

*asked on December 21, 2015* -
## math

An equation is shown below: 3 over 2 multiplied by x plus 7 over 2 equals 2 to the power of x What is the solution to the equation A.X=1 B.X=3 C.X=5 D.X=8 I think it could be d

*asked on December 8, 2015* -
## Math

The figure is a parallelogram. If the area of triangle BCD is 15 square kilometers, What is the area of ABCD?

*asked on February 10, 2014* -
## social studies

Where did the British first move acadians after exile from Acadia ? a) to many of the British colonies in small groups b) to France a s whole group c) Louisiana as a whole group d) all over Europe in small groups

*asked on September 20, 2013* -
## statistics

The weight of a product is normally distributed with a mean of 4 ounces and a variance of .25 "sq ounces." The company wants to classify the unit as a scrap in a maximum of 1% of the units if the weight is below a desired value. Determine the desired

*asked on June 28, 2012* -
## math

Explain It What is the purpose of using fraction strips and a 1 strip?

*asked on January 12, 2012* -
## AP United States History

Instructions: Use the following documents (most) and your knowledge of the period to answer the question. Question: Evaluate the following statement: "By the time of Abraham Lincoln's election in November of 1860, there was significant support in the North

*asked on March 23, 2011* -
## Math

An equation is modeled below using algebra tiles. Which value of x makes the equation true? A. x = 7 C. x = 13 B. x = -7 D. x = -13 The algebra tiles: There is a large block with an "x." Next to it are 3 small blocks with "1" inside of it. Then there is an

*asked on May 28, 2020* -
## Math

The following list has a median of 43. What would be the new median if 21 was added to the list?? The list is: 31, 48, 50, 23, 28, 52, 57, 38, 56, 27

*asked on May 21, 2020* -
## social studies

In a 200 word essay explain why people 2,000 years ago and still today "revere" the famous? Why do you think our fascination with celebrities is different from the Roman worshiping Gods, what similarities are there? Is there any danger in our culture, what

*asked on February 27, 2020* -
## math

A race car has a top speed of 330 km/hr. What speed is that in miles/sec?

*asked on October 24, 2018* -
## Algebra

LS 154. Find the measure of angle x. Identify the two angles that form the larger angle. 2 Write a subtraction equation. Subtract to find the measure of x. The measure of x

*asked on March 1, 2017* -
## Algebra

LS 154. Find the measure of angle x. Identify the two angles that form the larger angle. 2 Write a subtraction equation. Subtract to find the measure of x. The measure of x

*asked on March 1, 2017* -
## science

Tom is marking the locations of active volcanoes on a world map. Explain how the locations of the volcanoes are related to Earths plates. can you please explain this to me, I don't understand....thx

*asked on February 9, 2017* -
## algebra

The United States Department of Agriculture reported in Vegetables and Melons Outlook in 2007 that the average America consumes about 7.4 x 10^3 potato chips in a year. Since Idaho had about 1.5 x 10^6 people in 2007, how many potato chips would Idaho

*asked on October 8, 2016* -
## alegebra

(1.08 x 10^-3)(9.3 x 10^-3)

*asked on October 4, 2016* -
## math

find each unit rate. Round to the nearest hundredth if necessary. 8 batteries in 3 months

*asked on September 3, 2014* -
## math

How many 1/4 pound burgers can be made from 2 1/2 pounds of beef?

*asked on December 4, 2013* -
## Math

25-n=17

*asked on September 13, 2013* -
## US History

18. Which U.S. president made the following proposal? "A general association of nations must be formed under specific covenants for the purpose of affording mutual guarantees of political independence and territorial integrity to great and small states

*asked on December 18, 2012* -
## Math

He said it to his brothers he said it to his sisters what did the witty raindrop exclaim to all the others??????

*asked on October 24, 2012* -
## language

what is the literary device used in the statement? former indonesian president suharto was sometimes referred to as a puppet master.

*asked on September 5, 2012* -
## physics

A 0.2 kg sponge is dropped from rest , pulled down by gravity. How fast will it be traveling in 6.0s , if a 0.5 N force of air resistance acts on it

*asked on March 28, 2012* -
## physics

A fully loaded Saturn V rocket has a mass of 2.92*10^6. Its engines have a thrust of 3.34*10^7 N What is the unbalanced force of gravity on the rocket at blast off What is the unbalanced force on the rocket at blast off

*asked on March 28, 2012* -
## physics

A block of wood of mass 6.0 kg slides along a skating rink at 12.5 m/s^2 [w] . The block slides onto a rough section of ice that exerts a force of 30 N force of friction on the block of wood. The acceleration of the block of wood is 5.0 m/s^2 [E] and it

*asked on March 27, 2012* -
## Math

Sandra was thinking of a quadrilateral. All 4 sides are the same length and are parallel. There are 4 right angles. Which quadrilateral is she thinking of?

*asked on February 9, 2012* -
## math

write a subtraction problem that has a difference of 1/6.

*asked on January 24, 2012* -
## math

An arena seats 7,893 people. The circus is in town and all of the tickets have been sold. If the circus has 4 performances, about how many tickets were sold?

*asked on November 15, 2011* -
## Spanish

Enter the correct conjugation of the "-ar" verb for each sentence: 1. Tú y yo _____ cuadernos nuevos. (necesitar) 2. ¿_____ ustedes los nombres de mis amigos? (olvidar) 3. Nicolás _____ un regalo a su abuela. (presenter) 4. Yo _____ a Dios. (alabar)

*asked on January 31, 2011* -
## science

What is a therapeutic cloning and reproductive cloning?

*asked on August 12, 2009* -
## science

How is recombriant DNA technology used in medicine?

*asked on August 12, 2009* -
## Algebra

The formula C = 5/9(F-32) can be used to convert Fahrenheit temperatures to Celsius temperatures. a. Gold is liquid for Celsius temperatures C such that 1063 degrees (less than or equal to) C < 2660 degrees. Find a comparable inequality for Fahrenheit

*asked on January 27, 2009* -
## business

A company is considering a $250 million investment in land that it will hold for 25 years. The pretax net cash flows are $40 million per year and land prices are expected to rise at a rate of 7% per year. The opportunity cost of capital is 13%, inflation

*asked on February 4, 2007* -
## Careers

What career and job qualification can i get with these subjects? Maths lit,tourism,consumer studies,dramatic arts

*asked on January 22, 2020* -
## Physics

A plane flies in a circle of radius 4,000 meters. The plane completes the circle in 2.5 minutes. What is the centripetal acceleration of the plane?

*asked on November 23, 2019* -
## Chemistry

Data Electrodes: V Electrolyte: V(NO3)2 Amps: 6.0 Time (mins): 800 1. Calculate the charge in coulombs that passes through the cell during electrolysis. 2. What is the anode and cathode reaction of this cell? 3. Calculate the mass of metal deposited on the

*asked on March 24, 2019* -
## math

What kind of angle will have a supplement but no complement? plz help I am so confused.

*asked on June 6, 2018* -
## Science

I don't know anything to put for "Y" for Eukaryote. Help please.

*asked on February 27, 2018* -
## math

After delivering all of those presents, the elves were ready to eat some cookies. 50% of the cookies were sugar, and the rest were gingerbread. After eating 1,600 cookies, the number of sugar cookies decreased by 20% and the gingerbread cookies decreased

*asked on January 8, 2018* -
## Calculus

Let f(x)=sqrt(x+2) and use the Linear Approximation to this function at a=14 with Δx=0.3 to estimate f(14.3)−f(14)=Δf≈df=

*asked on November 5, 2017* -
## Calculus

A conical tank has height 3 m and radius 2 m at the top. Water flows in at a rate of 1.8m^3/min. How fast is the water level rising when it is 2.7 m?

*asked on November 5, 2017* -
## Maths

Find the largest no that divides 630 and 940 leaving reminders 6 and 4 respectively

*asked on June 6, 2017* -
## Maths

Find the largest no that divides 630 and 940 leaving reminders 6 and 4 respectively

*asked on June 5, 2017* -
## Math

Which type of graph would you use to display the data for each of the following purposes: a. To predict the world's population growth in the future b. To compare the percent of Canada's population with each blood type c. To look for a relationship between

*asked on March 5, 2017* -
## Albegra

diego wrote one equation to find a missing angle measure.Write three more equations to solve the same problem 180 grade - -------=48 grade

*asked on March 2, 2017* -
## Maths, triangle trigonometry

P, Q and R are three fire towers. Q is 40 km N 72°E of P and R is 48 km S 55° E of P. Find the distance between R and Q and bearing of R from Q.

*asked on February 26, 2017* -
## Álgebra

Matt cut a circle into 8 equal sections. He drew an angle that measures the same as the total measure of 3 of the sections in the circle. What is the measure of the angle Matt drew?

*asked on February 22, 2017* -
## Math

Gabriel has read 150 pages of a 236 page book.If he reads 9 pages a day, in how many days will he finish the book?

*asked on January 31, 2017* -
## Social Studies

"Explain how transportation innovations of the time period affected migration in the U.S" This question is really confusing to me and I need help wording it :-)

*asked on January 16, 2017* -
## Math

The total weight of a basket of 9 melons is 19 kilograms 250 grams. If basket weighs 1 kilogram 250 grams,and each melon had the same weighs,how much does each melon weigh?

*asked on January 7, 2017* -
## Math

The total weight of a basket of 9 melons is 19 kilograms 250 grams. If basket weighs 1 kilogram 250 grams,and each melon had the same weighs,how much does each melon weigh?

*asked on January 7, 2017* -
## sceinc

you exert the same force on two objects of different masses .whitch object will have greater acceleration

*asked on January 3, 2017* -
## algebra

Find the pattern and fill in the missing entries. in(x) | out(y) | 23 2 | 8 -2 | -4 8 | 26 0 | ? ? | 302 1.5 | ?

*asked on October 26, 2016* -
## algebra

(4 x 10^-5)^-6

*asked on October 5, 2016* -
## Math

Use 18 coins to make $1.75 I NEED LOTS OF HELP IM JUST IN FOURTH GRADE AND MY TEACHER NEVER TAUGHT ME THIS MY TEACHER IS MRS MCABE

*asked on June 4, 2016* -
## science

Which of the following is the best instrument to use to prepare a solution

*asked on May 19, 2016* -
## History

Hello, recently our grade was assigned a history project on the California gold rush. One of the topics we have to include is the 5 mining towns in California. So far, I know 2 which are San Francisco and Sacramento. Can you help me find the rest? Thank

*asked on April 22, 2016* -
## utah state history

Please help Fill in the blank 1.The (blank) settlers were the first ones to develop agricultural practices that were adapted to the arid west. 2.The invention of the (blank) made it possible for farmers to farm much bigger plots of land. 3.The practice of

*asked on April 21, 2016* -
## utah state history

fill in the blank 1.The (blank) settlers were the first ones to develop agricultural practices that were adapted to the arid west. 2.The invention of the (blank) made it possible for farmers to farm much bigger plots of land. 3.The practice of (blank) made

*asked on April 13, 2016* -
## Calculus Applied Integrals

A cylindrical tank of 22.1m high with radius 12.2m is filled to 10m high with water. How much work must be done to pump all the water out of the tank? (density of water is 1000\ kg/m^3) I used similar triangles somewhere in my calculations to find the

*asked on March 24, 2016* -
## math

Algebraic expression f - 7.3

*asked on March 23, 2016* -
## Life Science

The process by which cellular material is divided between two new cell. (2 words)

*asked on March 14, 2016* -
## Calculus Derivatives

Determine the concavity of f(x)=xlnx I end up with F''(x)=1/x, where it would be concave up when x>0 and concave down when x

*asked on March 5, 2016* -
## Calc Derivatives

Find the critical points of (4x-3)/(3x^(1/2))

*asked on March 5, 2016* -
## Calculus

1. Use the Mean Value Theorem to find an x-value where the instantaneous slope=average slope over the given interval: f(x)=(9-x^2)^(1/2) on [-3,2] I have done three chapters of Calculus already and I never have had to check for extraneous roots. So, my

*asked on January 16, 2016* -
## Calculus

Since f(x)=√(x-3) has an absolute minimum of 0 does its critical point exist? I'm really confused because someone mentioned that f(x)=√(x+3) does not have a critical point. Does that mean that if there is an end point there, there can't be a critical

*asked on January 12, 2016* -
## math

hi! so I have almost finshed solving a math equation i'm just stuck on this one last thing: x^3=3.85x10^-17 and I don't know how to isolate for x! plz help

*asked on January 11, 2016* -
## Calculus

For the following function, find the relative max's or min's using any method. I'm having a hard time finding the critical points...

*asked on January 10, 2016* -
## Calculus

For the function below, determine the intervals of concavity: f(x)=xlnx I tried doing it but the second derivative would always be f''(x)=1/x, so it would be concave up at x>0 and concave down at x

*asked on January 10, 2016* -
## Math

Sara has some fish,2 birds, and 5 hamsters.she has 6 fewer hamsters than fish. How many fish does she have?

*asked on October 20, 2015* -
## Chemistry

Hello! I was working on my Chemistry HW about metric conversion. Can you please check to see if my answers are correct? I was having a hard time converting, and I think I finally figured it out. 1 microliter= 0.000001 liters 1 mL= 1,000 microliters 100mL=

*asked on September 8, 2015* -
## math

If you take 13 boxes to postoffice and each weigh 2/3 of pound what is total weight

*asked on April 16, 2015* -
## Math

Which is greater: three sets of (5 - 2) or two sets of (2 + 3)? Draw diagrams to support your conclusion.

*asked on March 12, 2015* -
## chemistry

Calculate the mass of ethanol that must be burnt to increase the temperature of 150g of water by 75 degrees celsius, if exactly 75% of the heat released by this combustion is lost to the surroundings. Also it is given that the heat of combustion of ethanol

*asked on February 7, 2015* -
## Math

Will, Micah, and Sue went to dinner. Will paid 1/3 of the dinner bill. Micah and Sue paid in the ratio 2:5. If Sue paid $6 more than will, how much di the dinner cost?

*asked on February 1, 2015* -
## Math

Addison is making caramel apples. She has 2 1/2 bags of apples. One full bag has 8 apples, and each apple weighs 5 ounces. Write an expression that could be used to find the total number of ounces of apples Addison has. Then find the total number of

*asked on January 21, 2015* -
## Math

Multiplication is defined as repeated addition. Use the word repeated to define exponential form. Justify your reasoning.

*asked on January 17, 2015* -
## math

Manny makes dinner using 1 box pasta and 1 jar of sauce. If pasta is sold in packages of 6 boxes and sauce is sold in packages of 3 jars what is the least number of dinners that Manny can make without any leftovers?

*asked on December 21, 2014* -
## Math

Mount-Rush more is a sculpture that was curved using a model with a scale of 1 inch: 1 foot. Sculpture Refer to the information at the above. Find the scale factor and actual height of George Washington's face on the sculpture if the height of the the

*asked on December 21, 2014* -
## chemistry

To make a phosphorus fertilizer, agricultural companies use the following reaction: Ca3P2O8 + 2H2SO4 --> CaH4P2O8 + 2CaH4SO6 (fertilizer) If 1.50 * 10^4 grams of H2SO4 are reacted with excess Ca3P2O8 and H2O, how many grams of fertilizer can be made? Hi, I

*asked on November 29, 2014* -
## English

How does Hamlin Garland's "The Return of a Private" exemplify the characteristics of regionalism?

*asked on November 14, 2014*