Friday

January 20, 2017
Total # Posts: 352

**Algebraic equations real life problems**

A book cover has the length and width(in inches) shown in the diagram. A) Find the values of a and b B) Find the perimeter of the book cover. Widths are top--3b in. bottom--(2+a)in. Lengths are left--(3a-b) in. And right--(2+a+2b) in.

*December 14, 2016*

**Math**

The area of a rectangular photo is 35 square inches. If the width of the photo is 5 inches, how tall is the photo?

*December 1, 2016*

**Algebraic linear equations**

Stefanie's train will leave the station in 24 minutes and she is y miles from the station. To catch the train, she walks at a speed of 4 miles per hour and later runs at a speed of 8 mph. Write an equation in terms of y for the distance she has to walk, w, to reach the ...

*November 2, 2016*

**Probability & Stats**

An experiments consists of tossing 4 coins successively. The number of sample points in this experiment is a. 16 b. 8 c. 4 d. 2 Please show work and why it is the answer! Thank you!

*October 31, 2016*

**algebra**

Simplify. Answer should contain only positive exponents. Please show work. (3a^2)^3 Thank you!!

*October 19, 2016*

**8th Grade Math-exponents**

Thank you!! It must be a typo in the book. Singapore Math. I appreciate all of your help!!

*September 21, 2016*

**8th Grade Math-exponents**

Thank you!! It must be a typo in the book. Singapore Math. I appreciate all of your help!!

*September 21, 2016*

**8th Grade Math-exponents**

Let me try writing it again... (X/2)^3*(X/2)^4 --------------------- (X/2^3)^2 I keep getting X/2^6, but the book says X/2^5. How do you get X/2^5????

*September 21, 2016*

**8th grade math-exponents**

I can't quite write the problem, so I'll try to explain it as best I can. In exponents and in fractions... (X/2) to the 3rd power times (X/2) to the 4th power...all over,or divided by, (X/2 to the 3rd power) to the 2nd power. The book says the answer is X/2 to the 5th ...

*September 21, 2016*

**8th grade math-exponents**

Let me try writing it again... (X/2)^3*(X/2)^4 --------------------- (X/2^3)^2 How do you get X/2^5????

*September 21, 2016*

**8th grade math-exponents**

I can't quite write the problem, so I'll try to explain it as best I can. In exponents and in fractions... (X/2) to the 3rd power times (X/2) to the 4th power...all over,or divided by, (X/2 to the 3rd power) to the 2nd power. The book says the answer is X/2 to the 5th ...

*September 21, 2016*

**biology/science**

Oxygen attracts electrons more strongly than hydrogen does. What kind of bond forms between the two hydrogen atoms and single oxygen atom that form a water molecule? A. A metallic bond B. A hydrogen bond C. An ionic bond D. A polar bond Currently stuck here.

*September 19, 2016*

**science**

What should be the range for the exponent of [H+] in solutions that are characterized as acidic? A. 0 to -0.07 B. 0 to 0.7 C. 0 to -7 D. 0 to 7

*September 14, 2016*

**science**

Which of the following is the pOH range of gastric acid? A. 1.5 to 3.5 B. 10.5 to 12.5 C. 1.5 to 2.5 D. 6.5 to 7.5

*September 14, 2016*

**science**

When are more products of a reaction available initially than at equilibrium? A. K = 0 B. Q < K C. Q = K D. Q > K

*September 14, 2016*

**science**

When Q < K, what can you conclude about the reaction? A. The reaction is not yet at equilibrium, and the reaction will proceed in the forward direction. B. The reaction is not yet at equilibrium, but the direction of the reaction must be experimentally determined. C. The ...

*September 14, 2016*

**science**

so c?

*September 14, 2016*

**science**

If the reaction is at equilibrium, which change will help to increase the amount of ammonia formed? 3H2(g) + N2(g) 2NH3(g) + heat A. Removing nitrogen B. Raising the temperature C. Lowering the pressure D. Adding hydrogen

*September 14, 2016*

**science**

What change do you expect if the value of the reaction quotient is greater than the value of the equilibrium constant? A. The rate of the forward reaction is greater than the rate of the reverse reaction. More reactant forms. B. The rate of the forward reaction is greater than...

*September 13, 2016*

**science**

How does deltaG° relate to K for a reaction? A. When deltaG° > 0, K < 1 and products are favored. B. When deltaG° < 0, K > 1 and products are favored. C. When deltaG° < 0, K < 1 and reactants are favored. D. When deltaG° > 0, K > 1 ...

*September 13, 2016*

**Triangles**

Determine whether the following lengths can make a triangle: 3, 5, 7

*September 13, 2016*

**Triangles**

Two sides of a triangle have lengths of 10 and 13. The length of the third side can be any number between _________ and ________.

*September 13, 2016*

**Physics**

What amount of energy is needed to change 1 kg of O degrees Celsius ice to 10 degrees Celsius water?

*March 14, 2016*

**Math**

The greatest amount of bouquets you could make is 3 because 3 is the least common factor and it goes into all the numbers equally

*February 2, 2016*

**Algebraic inequalities**

There are three kinds of fruit in a basket:apples, oranges, and pears. The number of apples is 1 less than the number of oranges. The number of pears is 2 times the number of apples. There are 17 fruits in the basket. How many of each kind are there?

*December 16, 2015*

**Math**

A landscaper installs 12 sections of trellis. Each section is 3/4 yards long. How many yards of trellis are installed altogether?

*December 3, 2015*

**Stats**

Fill in the table below regarding populations and samples. The first column represents the question the statistician is trying to answer. Fill in the blank(s) for each row. 1.Is my well water safe? 2.Are as many girls born as boys in the world? 3.Which works better, Advil or ...

*November 19, 2015*

**chemistry**

Determine the pH of a 1 M aniline solution (Kb = 4.2 10-10). I am unsure how to start, any help?

*November 13, 2015*

**math**

A company logo has 4 concentric circles suppose you graph the points (diameter,circumference ) and connect them with a line. In terms of (pie), what is the slope of the resulting line.

*November 12, 2015*

**Chemistry**

There is a question on my assignment that's asks how many moles of atoms are in x mol of CO2 (and a few others). Let X represent 5x10^-4. How do I do this? Teacher didn't really teach us this. I know in one mol of CO2 there is 2 moles of oxygen atoms, so how many in ...

*October 13, 2015*

**math**

hte4rgc44444rrrrrrrr

*October 8, 2015*

**LA Story Teller**

1 is C 2 is D 3 is C 4 is C 5 is B I just took the test

*September 21, 2015*

**Math - Algebra**

On test day, a teacher sharpens 19 pencils to lend out to his students. If n represents the number of pencils that the teacher lends out, which expression represents the number of pencils he has left? A) 19 - n B) 19 + n C) n-19 D) 19n *Please help!*

*September 16, 2015*

**Math - Algebra**

Evaluate t - u/v when t = -1, u = -3, and v = 1/2 I am VERY VERY unsure what the answer is. PLEASE HELP!!! I am stuck on this!!!

*September 16, 2015*

**Hanahan**

Use addition or substitution to find the value of y for this set of equations. 4x + 13y = 40 4x + 3y = -40

*May 30, 2015*

**math**

Does anyone know all the answers

*May 7, 2015*

**Math**

AMY IS RIGHT

*April 24, 2015*

**SS**

Lol I think its B

*April 21, 2015*

**SS**

Yes you guys really need to stop cheating

*April 20, 2015*

**Chemistry**

C is the answer

*March 19, 2015*

**english cr**

compare and contrast the two differnt versions of the story of the great chicago fire. how does the format of each passage allow the author to add details and information to support his/her purose?

*March 9, 2015*

**Statistics**

64

*February 24, 2015*

**Physics**

25 degrees

*January 29, 2015*

**English check please**

1. In the poems in this collection, who faces life with the most hopefulness and self-confidence? the speaker in “Life Doesn’t Frighten Me”********THIS ONE the speaker in “A Dream Within a Dream” the Oysters in “The Walrus and the Carpenter”...

*January 26, 2015*

**ART Check**

You were right on both! Thanks

*January 22, 2015*

**ART Check**

Brooch of Henry Clay This brooch contains a miniature picture of american statesmen henry clay. likely owned by clay or his ancestors this brooch is valued for what reason a)scholastic value b)provenance c)cultural heritage d)market value A museum is building a collection of ...

*January 22, 2015*

**English Check please**

C and d were correct thank you

*January 22, 2015*

**English Check please**

So C for 1? and thank you

*January 22, 2015*

**English Check please**

in a dream within a dream which phrase is a context clue to the meaning of grasp? While I weep--while I weep!/O God! Can I not grasp/Them with a tighter clasp? a) While I weep b)O God! Can I not c) with a tighter clasp d)can I not grasp them My answer is B Another one from A ...

*January 22, 2015*

**algebra**

How do I graph a direct variation when x=10, 20, 30, 40, and y = 4.5, 9.00, 13.50,18.00 Put x on graph going up by 10 and put y on graph at the bottom going across I am unsure of rest

*January 21, 2015*

**Math**

In a jar the number of blue marbles = twice the number of red marbles! there are 24 more blue marbles than red. How many red and blue marbles are in the jar?

*January 14, 2015*

**math**

How do I write an equivalent equation that does not contain fractions for 1/2 x -5 = 1/3

*December 6, 2014*

**Chemistry**

I'm not sure how to calculate the ΔH°rxn for 3 Al + 3 NH4ClO4 -> Al2O3 + AlCl3 + 3 NO + 6 H2O. I'm honestly not sure where to start with this problem.

*November 28, 2014*

**5th grade math**

how many flowers do I have if...1/4 are pink...2/5 of remaining flowers are red...18 are yellow

*November 18, 2014*

**Chinese**

My favorite: 我最喜欢 Wǒ zuì xǐhuān Egg: 蛋 Dàn Egg (specifically chicken): 鸡蛋 Jīdàn

*October 24, 2014*

**algebra 2**

Shalonda notices that when she stands next to the flagpole, she casts a shadow that is 8 feet long and that the flagpole casts a shadow that is 28 feet long. Little Shalonda is 4 feet tall. How tall, to the nearest foot, is the flagpole?

*October 21, 2014*

**Science**

If 2 cities on a globe is equal to 7cm, what is the actual distance between the 2 cities?

*October 15, 2014*

**Chemistry**

a 191 g piece of copper is heated to 100 C in a boiling water bath and then dropped into a beaker containing 755 g of water (density =1.00 g/cm3) at 4.0 C. What is the final temperature of the copper and water after thermal equilibrium is reached? (Scu=0.385 J/g•K)

*October 15, 2014*

**Chemistry 30**

Calculate the delta H for the reaction : 2H3BO3(aq) reacts with B2O3(solid) + 3H2O

*October 13, 2014*

**math**

Represent 30 degree increase in temperature as an integer. Would that be +30?

*September 29, 2014*

**math**

Is the amount of tax collected proportional to the cost of an item after tax has been added?explain

*September 2, 2014*

**Math**

I am a number between 20 and 30. When you divide me into 6 equal groups,there is an even number in each group and 2 are left over.what number am I?

*July 9, 2014*

**statistics**

suppose you roll two number cubes and pick a letter of the alphabet at random. find the probability you will roll two odd numbers and pick one of the letters k, l, or m.

*June 4, 2014*

**art history**

Which of Michelangelo's sculptures is a metaphor for courage, determination, and strength?

*May 20, 2014*

**physics**

A 0.250-kg aluminum bowl holding 0.800 kg of soup at 27.0°C is placed in a freezer. What is the final temperature if 430 kJ of energy is transferred from the bowl and soup? Assume the soup has the same thermal properties as that of water, the specific heat of the liquid ...

*April 21, 2014*

**physics**

=(1/2 m v^2)(.69)/(m C)

*April 21, 2014*

**physics**

A piece of iron block moves across a rough horizontal surface before coming to rest. The mass of the block is 1.8 kg, and its initial speed is 3.8 m/s. How much does the block's temperature increase, if it absorbs 69% of its initial kinetic energy as internal energy? The ...

*April 21, 2014*

**pre-algrebra**

melind wants to paint the exterior lateral surface of her house. It is nine feet high and has a perimeter of 140 feet. each gallon of paint covers 300 square feet how many one gallon cans of paint does she need to buy to paint her house

*March 7, 2014*

**Math**

Do u mean 9/39

*March 5, 2014*

**Math**

Assume you are working on a house the length of the house is 50 feet, the width is 30 feet, and from the ground to the gable is 10 feet. The height of the triangle prism on top is 6.5 feet. If you are going to shingle the roof of this house, how many square feet should you ...

*February 28, 2014*

**S.S Check my answers**

THANKS GUYS GOT 100% YAYAYAYAYAYYAYAY

*February 14, 2014*

**Correction**

Not understanding how to answer this You pore over the present evaluation: two intoxicated college females, one DUI and the other trying to run from police officers, both with no prior arrest, and both nursing majors at the local college. As judge, you must decide whether to ...

*January 31, 2014*

**Math (7th grade)**

7

*December 17, 2013*

**Math**

Thanks sweetie it's easy

*November 20, 2013*

**physics**

Two stones are thrown vertically up at the same time. The first stone is thrown with an initial velocity of 11.5 m/s from a 12th floor balcony of a building and hits hits the ground after 4.6 seconds. With what initial velocity should the second stone be thrown from a 4th ...

*September 10, 2013*

**Chemistry**

A gas occupying a volume of 664 mL at a pressure of 0.970 atm is allowed to expand at constant temperature until its pressure reaches 0.541 atm. What is its final volume?

*May 7, 2013*

**Chemistry**

A gas occupying a volume of 664 mL at a pressure of 0.970 atm is allowed to expand at constant temperature until its pressure reaches 0.541 atm. What is its final volume?

*May 7, 2013*

**language and art**

How to write a character sketch?

*May 1, 2013*

**social studies**

Welcome to Jiskha the home for cheaters XD

*March 11, 2013*

**Social Studies**

All I know is that it is Harrison. Can't remember why but it is.

*February 25, 2013*

**physics**

Just use (k*|q1|*|q2|)/r^2 It should come out as 1,638,427.5N

*February 19, 2013*

**math**

a pizza has a diameter of 18. what is the best estimate of the area of the pizza?

*February 8, 2013*

**Physics**

can anyone explain how they got their answer?

*January 23, 2013*

**Math**

1.5%h=12. What is h?

*January 9, 2013*

**physics**

A ferry boat is 6.2m wide and 7.1 m long. When a truck pulls onto it, the boat sinks 6.02 cm in the water. What us the weight of the truck? The acceleration of gravity is 9.81 m/s2. Answer in units of N

*December 19, 2012*

**PLEASE HELP**

PLEASE

*December 7, 2012*

**College Algebra and Finance**

Please help! Just need the answer... A lender gives you a choice between the following two 30-year mortgages of $200,000: Mortgage A: 6.65% interest compounded monthly, one point, monthly payment of $1283.93 Mortgage B: 6.8% interest compounded monthly, no points, monthly ...

*December 7, 2012*

**math**

A lender gives you a choice between the following two 30-year mortgages of $200,000: Mortgage A: 6.65% interest compounded monthly, one point, monthly payment of $1283.93 Mortgage B: 6.8% interest compounded monthly, no points, monthly payment of $1303.85 Assuming that you can...

*December 7, 2012*

**math VERY URGENT**

First year 1+ 2=3 Second year 3+2+2+2=9 Third year 9+2+2+2+2+2+2+2+2+2=27 Fourth year 27+[27•2]=81

*December 4, 2012*

**Math**

The difference between the two numbers is 14. The LCM of the two numbers is 16. Find the two numbers

*November 13, 2012*

**physics**

your completely wrong

*October 14, 2012*

**physics**

A car traveling in a straight line has a velocity of +3.3 m/s. After an acceleration of 0.71 m/s2, the car's velocity is +8.8 m/s. In what time interval did the acceleration occur?

*October 14, 2012*

**algebra**

Find the least common multiple of the monomials. 5a squared, and 16a cubed. Also 17b squared and 3b cubed. Could you show me how to do these. Thank you, Sandy

*October 10, 2012*

**math**

what is 2056 less than 22010

*September 26, 2012*

**math**

Use breaking apart method to solve 5 times 5, I'm not sure what this means

*September 17, 2012*

**algebra**

A rectangle has a length that is 5 feet more than its width. The area of this rectangle is 84 square feet. What is the width and length of this rectangle?

*September 13, 2012*

**algebra**

I don't understand this question How would you explain to your friend why the quotient of x*6 and x^2 is x^6 Remember your friend is questioning the rule, so you just cannot say it is the rule.

*September 7, 2012*

**5th grade religion**

hi

*September 5, 2012*

**math**

how do i factor the following equation? 3x^2=48

*August 29, 2012*

**ALGEBRA**

List the conditions when the sum of a positive number and several negative numbers will be positive. Include an example that represents your answer.

*August 10, 2012*