# Posts by Joelle

Total # Posts: 33

Maths
On the 1st of January 2014, Carol invested some money in a bank account. The account pays 2.5% compound interest per year. On the 1st of January 2015, Carol withdrew £1000 from the account. On the 1st of January 2016, she had £23 517.60 in the account. Work out how...

math
Calculate the perimeter of a rhombus with a side of 5.6 cm

Math- Problem solving
A number has 4 digits. The digit in the hundredths place us greater than the digit in the hundredths place of 4.361. The digit in the tousandths place is greater than the digit in the tenths place of 2.85. What are the possible four-digit numbers between 8.6 and 8.7?

math
A four-digit number between 12 and 13 has an odd number in the hundredths place and an even number in the tenths digit. The sum of the tenths and hundredths digit is 9. What are the possible four-digit numbers?

Spanish -Thank you
Thank you very much.

I think what I put is incorrect. The question is asking how you(as in plural) so the answer then would have to be in long adjective form either nuestro(s) or nuestras depending on gender to show possession, correct? So if I answered the above about UDs. I would say Los ...

Spanish -Help
We had to answer questions with the long adjective form and I'm not sure about this one? Los partidos de fútbol americano en mi escuela son malos. ¿Cómo con los de Uds.? ¿Cómo son los suyos? Would it be "Las partidos de fútbol...

Thank you very much

Is this I would say I snacked(past tense) on popcorn and a drink in the movie? Merende palomitas de maíz y un refresco en el cine. How do I say I snack(present tense) on popcorn and a drink in the show? Meriendo palomitas de maíz y un refresco en el cine.

chemistry
i need help with finding the ph of a buffer solution initially consisting of 0.0400 moles NH3 and 0.025 moles NH4^+ and 20 ml 0.75 NaOH. ka of NH+4 = 5.6 ×10^-10

chemistry
i need help with finding the ph of a buffer solution initially consisting of 0.0400 moles NH3 and 0.025 moles NH4^+ and 20 ml 0.75 NaOH. ka of NH+4 = 5.6 ×10^-10

language arts
stream is to river as allley is to

algebra2
Write the expression (2x)(4y) + 9x + 10y + (8x)(4y) in a simpler form, if possible. I've tried this problem several times, and have gotten the wrong answer. Someone help?

Thank you very much

Would changing the frequency of a wave cause a change in amplitude? I would say only if the wave velocity remains the same because if the frequency increases, vibrations increase and then amplitude would decrease, correct? If I had a wave diagram will 4 complete waves showing ...

Would changing the frequency of a wave cause a change in amplitude? I would say NO because they don't affect each other, correct? If I had a wave diagram will 4 complete waves showing and it said the diagram represented 4 sec in time the frequency would be 1cycle/ per ...

physics
Roughly twice the gravitational acceleration of 9.8 to stop in have the time. Given F=MA then F = 48*19.6 or about 950 (kg*m/(S^2)). SOmeone helped on the facebook page: diving news by flipnripcom

physics
Don't know the answer but posted it on the Diving News Facebook page: diving News - By flipnrip

Physics
I just don't know how to get to this answer ?? :(

Physics
1. A hollow sphere and a solid sphere roll without slipping down two different ramps. They start at different heights. The speed and kinetic energy of each sphere is the same when they reach the bottom of their ramp. If the hollow sphere has mass 3.25 kg, what is the mass of ...

Physics-Dr. Bob cannyou look at my work-I'm still
had this question last night for Dr. Bob-A fox sees a piece of carrion thrown from a nest 14 m high and goes to get it. Carrion is thrown 1.5 horizontal velocity. Fox is 7. m from base of tree. What is mgnitude of fox's average velocity if it grabscarrion just as it ...

had this question last night for Dr. Bob-A fox sees a piece of carrion thrown from a nest 14 m high and goes to get it. Carrion is thrown 1.5 horizontal velocity. Fox is 7. m from base of tree. What is mgnitude of fox's average velocity if it grabscarrion just as it ...

Physics
Fox sees a piece of carrion being thrown from nest and rushes to it. Nest is 14.0 m high and carrion is thrown with a horizontal velocity of 1.5m/s. Fox is 7.0 m from the base of tree. What is magnitude of fox's average velocity if it grabs carrion in its mouth just as it ...

math professor is thrown off the matthews bridges, height 240ft, by a disgruntled calculus class with an intitial upward velocity of 10ft/s a) assumign the acceleration dude to gravity is -32ft/s^2,find the macimum height of the professor. b) find the time before the professor...

also can you please tell me if A is right? thank u

The average cost per item, C, in dollars, of manufacturing a quantity q of cell phones is given by C= (a/q) + b where a and b are positive constants a.Find the rate of change of C as q increases. What are its units? b. Currently, 5000 phones are being made and production is ...

A ruptured oil tanker causes a circular oil slick on the surface of the ocean. When its radius is 150 meters, the radius of the slick is expanding at 0.1 m/min, and its thickness is .02 m. At that moment: a. How fast is the area of the slick expanding? b. If the circular slick...

math
a closed box has a fixed surface area A and a suqare base wide side X a) find the formula for its volume, v, as a function x b) sketch the graph of v against x c) find the max value of V

math
a gardner wishes to encloe a rectangular 3000 square feet area with bushes on three sides and a fence on the 4th side .If the bushes cost \$25.00per foot and the fence costs \$10.00 per foot, find the dimensions that minimize the total cost and find the minimum cost