# Posts by DiANA

Total # Posts: 909

**Math**

The javelin event is held on the field inside the track. This field is a rectangle measuring 100 meters by 64 meters, with a semicircle at each end. Early modern Olympic javelins were designed so well that javelin throwers could throw them beyond the field and onto the track. ...

**Chemistry**

58% Ca3 (PO4) 2 how many phosphorus are in 10 kg bones?

**Chemistry**

58% Ca3 (PO4) 2 how many phosphorus are in 10 kg bones? Ca3(po4)2+SiO2+C=CaSiO3+P4

**microeconomics**

Answer for 2 is 50

**chemistry**

What volume of a 6.0 M NaOH solution would you need to prepare 250.0 milliliters of a 3.0 M NaOH solution?

**math**

No. Two rays can be parallel and so would never form an angle.

**math**

Solve the following systems of equations. 3x + 4y = 4 2x + y = 6

**math**

The sunshine bakery sells pies at a fixed price o p dollars per pie. The total number of pies demanded daily, D, is related to the price, p, in dollars by the equation: D = -10p + 200 On the other hand, the daily supply of pies, S, is related to the price, p, per pie by the ...

**Criminal Justice**

i just need help trying to find the answers for it. Ive tried looking and kind find it. :/

**Criminal Justice**

A 1-page outline on the best way to format and present the federal criminal pretrial process, which includes jury selection, evidence and jury instructions. Please provide examples in your outline of your recommended format for presenting the process. A 1-page draft of how to ...

**Accounting/Office admin**

It is the beginning of a new year and you just received the landlord’s building expense pass through reconciliation for the previous year. Assuming the math is correct, what are the two most important things to look for?

**AP World History**

What were some complexities of trade in Post Classical world and how it is similar and or different to today?

**AP World History**

No, this is my question. What were some complexities of trade in Post Classical world and how it is similar and or different to today?

**AP World History**

Describe the complexities of trade in Post-Classical world and compare to today.

**Chemestry**

If 0.25 mol of methane gas (CH4) is introduced into evacuated 2.00 L container at 35 Degrees Celcius , what is the pressure in the container ?

**Chemestry**

If 0.25 mol of methane gas (CH4) is introduced into evacuated 2.00 L container at 35 Degrees Celcius , what is the pressure in the container ?

**Chemistry**

Calculate the enthalpy of combustion for acetic acid using standard enthalpies of formation.

**math**

there are 4 green marbles,5 blue marbles,and 6 purples marble. 1. What the probability of picking a red marble, not replacing it, then picking a purple marble?

**Physics**

Hey this is what I did: T=Ia a= T/I then divide a/precessing velocity and that is the answer

**psych**

an IQ test is given on a tuesday, when given the test again on thurs the child scores differently, this is an issue of what? function, reliablity, observation or reflection?

**7th grade math help Ms.Sue please ASAP**

Hey there! I have a similar test and the relatives of real numbers can be hard if you're having trouble with the concept however I know for fact that you are right for #1 because rational is basically decimals and or fractions that repeat and or end while irrational is ...

**Math**

Two cards are drawn in succession without replacement from a standard deck of 52 cards. What is the probability that the first card is a face card (jack, queen, or king) given that the second card is an ace? (Round your answer to three decimal places.)

**maath**

The accompanying tree diagram represents a two-stage experiment. (Let x = 0.45, y = 0.55, r = 0.65, s = 0.35, t = 0.4, and w = 0.6.) Use the diagram to find the following probabilities. (Round your answers to three decimal places.) (a) Find P(A) · P(D | A). (b) Find P(B...

**Math**

Two cards are drawn in succession without replacement from a standard deck of 52 cards. What is the probability that the first card is a spade given that the second card is a club? (Round your answer to three decimal places.)

**statistics**

A researcher wishes to estimate with 95% confidence the proportion of adults who have high speed internet access. Her estimate must be accurate within 4% of the true proportion. 1. Find the minimum sample size needed using a prior study that found that 48% of the respondents ...

**chemistry**

Aluminum metal is exposed to atmospheric oxygen, it is oxidized to form aluminum oxide. How much heat is released by the complete oxidation of 24.2 grams of aluminium at 25°C and 1atm.

**math**

Yeah, Anonymous is right I go to connexus as well and they will find out no matter what teacher. There is a website provided called CheckMyWork and teachers and students use it to be sure they are not plagiarizing and or cheating in any sort of way. If you want to use Jiskha, ...

**7th grade math**

How do you arrange the numbers 2 4 5 and 6 ans insert the symbols "-" and "x" in a way that u follow PEMDAS/ order of operations to get the answer 8

**Chemistry**

23.4 C

**geometry**

(x+20)(x+10)(y-40)

**geometry**

find the value of each variable (6y-16) (4y+6)

**geometry**

whats the value of each variable (7x-27)(4x+12)

**AP World History**

There is a word that my worksheet is saying to define, the word is Chavin. I looked through my textbook, but I can't find the definition. What I am learning now is agricultural development and the earliest civilizations. Can you please give me a definition for Chavin?

**cars**

A ruling of the FTC requires that every used car must display a(n) ________ spelling out the warranty terms under which the vehicle is offered for sale. A. vehicle identification chart B. agreement C. option chart D. buyer's guide I have no idea what it is. HELP

**math**

joanne picked 15 more than twice as many apples as her sister. Her sister picked 35 apples.

**Chemistry**

It is C.

**HEALTH**

idkk i need help with this one too!

**health**

😂😂😂😂 ^^

**ap world history**

I mean coke as in coca cola

**ap world history**

how did coke become basically seen as an american value? how did this help and hurt coke (and in some ways, america itself?)

**ap world history**

how was tea connected to the opium trade and the opium war of 1839-1842?

**AP World History**

Hi its Diana with the same question: How did coffee play a pivotal role in the French Revolution? (lots of details and go into the Enlightenment) But, I looked at the articles you sent me and I still don't understand how coffee influenced the Enlightenment. I am having so ...

**AP World History**

How did coffee play a pivotal role in the French Revolution? (lots of details and go into the Enlightenment)

**AP World History**

Why were spirits an important staple in Colonial America?

**chemistry**

what the rules to be followed in performing he 4 fundamental operaions using scientific notation?

**Math or geometry**

7c-4x+45

**algebra2**

An ice-cream parlor sells sundaes with 3 different types of ice-cream and 4 different toppings. They have 8 flavors of ice-cream and 10 toppings for their customers to chose from. What is the probability that a customer orders a sundae including the toppings of whipped cream, ...

**isep - fisica**

b) quantidade de acelaracao no ponto b. o ponto b é um cursor que esta preso no cimo de uma barra que esta dentro de outra barra . como e que calculo a quantidade de acelaracao neste caso uma vez que ha acelaracao de coriolis

**history**

Which is NOT true of the segregation laws passed after the Civil War?

**history**

Philadelphia, Pennsylvania was NOT _____.

**Polynomials. :) :)**

f(x)=2x^4+4x^3-7x^2-x+7 has no rational roots. Approximate the irrational solutions correct to 3 decimals. If there is more than 1 real solution, enter them from smallest to largest, separated by a comma

**Polynomials. :) :)**

2x^4+4x^3-7x^2-x+7 Approximate the irrational solutions correct to 3 decimals. If there is more than 1 real solution, enter them from smallest to largest, separated by a comma.

**Government**

Las Vegas uses a council-manager style government?

**Government**

Las Vegas uses a council-manager style government

**accounting**

Question: Because Aqua Elite, Inc. is a new startup business, the beginning balances in all the general ledger accounts are zero to start. n The length of the accounting periods are three months using a fiscal calendar year. (A fiscal calendar is on a yearly basis other than a...

**Math**

Tasha saw a sailboat while walking along the pier. She thinks it is the tallest sailboat she has ever seen. The shadow cast by the boat was 14 ft long, while Tasha's shadow was only 2 ft long. If Tasha is 5.5 ft tall, how tall was the sailboat, in feet?

**math**

It would be 21. :)

**math**

9y squared + 48 - 36

**Math**

If events A and B are independent and P(A) and P(B) are nonzero, explain why P(A U B) does not equal P(A)+ P(B) im not sure how to answer this

**Trigonometry**

Your altitude is 40,000 feet and you detect a target at a depression angle of 6 degrees and a range of 20 miles. what is the altitude of the target? Draw a picture.

**Math**

Simplify (x^1y^1)^5

**Math**

Simplify z-4

**Algebra**

Thanks

**Algebra**

combine like terms (simplify) 11/14a-1/15b+1/14a-11/15b

**Math**

Classify the given number. - 4/9

**Math**

find the value of expression. 3*45/9-2(10-)-4/2

**Geometry**

find the perimeter of the trapezoid. L1=9.65yd, L2=9.25yd, L3=10.12yd, L4=6.20yd

**Geometry**

Can you please explain?

**Math**

28.26 yd squared

**Math**

178.3 ydd3

**Mangerial Economics**

Where Q is the number of cans of tennis balls sold quarterly, P is the wholesale price Wilpen charges for a can of tennis balls, M is the consumers average household income, and Pr is the average price of tennis rackets. The regression results are as follows Dependant Variable...

**Business English**

Which of the following sentences advocates an idea in a positive way? A. I can't see anyone buying the product at that price. B. The unit is way overpriced. C. Customers can get a better deal anywhere else. D. We can corner the market if we discount the selling price just 5%.

**math**

also a problem that i cant figure out is how to do inverses of logs f(x)= 2log(base2)X

**Math**

3ln(b) + 2ln(c) write as a single log. I have tried this problem so many ways. i don't know what to do with the 3 and the 2. do you multiply or use them as exponents or what

**English**

I want to delete this :S

**English**

What do you think about my essay? "A little bit longer and I will be fine" “..And you do not know what you got until it is gone, and you do not know what i s like to feel so low...” A quote written by Nick Jonas to express how he felt after being diagnosed ...

**algebra. help!!**

how do u get 2t?

**Algebra**

x^2–4 ÷ x^2+5x+6 ____________ ______________ x^2 + 3x – 10 x^2 + 8x + 15

**Algebra**

Thank you Steve.

**Algebra**

Factor 12x^2(x-1)-4x(x-1)-5(x-1) and show work.

**math**

to solve this problem, you would simply add the exponent of 13 from both tens since you are multiplying the exponents together. the answer would be 10 to the 26th power.

**Math**

Thanks a bunch

**Math**

Find an equation of the line containing the points (-6,19) and (-15,28)

**math**

If y=8(5)^x then write ln y as a linear function of x I don't know how to do this.??

**algebra**

because, x2 - x1 will always equal zero and you cant divide a number by 0

**math**

about 2826....

**Math**

what do you do when you have log on the side with y. for example logy= .120387x + .4771 How do you solve for y?

**algebra**

Find all integers b so that the trinomial 3x^2 +bx + 2 can be factored.

**math**

i had cards to write, i wrote 1 third of cards on monday, 2 eighths on tuesday, 1 sixth on wednesday and wrote the remaining 27 cards on thursday. how many cards did i write?

**math**

what would be the numerator of a fraction that is equivalent to 5/8 and has a denominator of 48?

**chemistry**

Calculate the number of moles of each ion in 10.5 mL of 0.205 M cadmium phosphate solution.

**Chemistry**

A sample of Manganese (II) Chloride has a mass of 19.8 grams before heating, and 12.6 grams after heating until all the water is driven out. Based on this information, how many water molecules were attached to each molecule of Manganese (II) Chloride?

**Chemistry**

How many moles of atoms are in one mole of AlPO4?

**physics**

A block of ice at 0 degree celsius is placed in a room whose temperature is also 0 degree Celsius explain what will happen?

**Cosine question**

cos theta= .5 2cos theta= .5 how do you do this?

**Chemistry**

THANK YOU!

**Chemistry**

PLEASE HELP! What is the mass of 1.50x10^-2 mol of (NHv4)v2SOv4? v=subscript

**statistics**

Assume the monthly rainfall in a certain state is normally distributed with a mean of 2.85 inches and a standard deviation of .2 inches: a) probability that in any given month there is between 2.7 and 2.9 inches of rainfall b) probability that in any given month there is more ...

**english**

can you give me those similarities and differences of africa and asia?? please reply ASAP. thnx.. :)

**calculus**

Find the critical number of g(t)=(t^2)/(5t+4)