Saturday

April 19, 2014

April 19, 2014

Total # Posts: 35

**Chemistry**

1) it is found that .30 M solutions of the three shots Na3X, Na2Y and NaZ have pH's of 8.5, 7.0 and 10.5 not necessarily in order. (X,Y, and Z AE anions. Na is sodium ion) A) explain how anions can act as bases in aqueous solution. Write a chemical equation to explain your...

**Physics**

How much is the acceleration of a baseball thrown by a pitcher in a major league baseball game, if the ball goes from 0 to 90 mph in a one-half-second time period?

**Physics**

If you wish to warm 100 kg of water by 20° C for your bath, show that 8370 kJ of heat is required.?

**Science**

If you wish to warm 100 kg of water by 20° C for your bath, show that 8370 kJ of heat is required.?

**SIcene**

Three examples of physical change are ____. (1 point) boiling water, a nail rusting, and a melting candle a pond freezing, breaking glass, and a burning candle melting ice, mowing the lawn, and carving a statue applying lipstick, making lemonade, and baking bread

**Physical geography**

Thanks, that was a lot of help..

**Physical geography**

Thanks Ms.Sue, Here was the question that I am trying to figure out. -Which of the following scales would most likely be used for the maps of the features listed. 1:12,500,00 - 1:1,000,000 - 1:10,000 for state (Oregon), city (Portland), and world map. It shows no examples in m...

**Physical geography**

what is the fractional scale of oregon? and how do you figure it out. Thanks

**math**

how do i mutiply and divide yrd, inches, and feet

**Politics**

How does bureaucracy effect foregn policy?

**Politics**

How does the presidential agenda affect congress

**math**

Calculate the monthly finance charge for the following credit card transaction. Assume that it takes 10 days for a payment to be received and recorded and that the month is 30 days long. (Round your answer to the nearest cent.) $300 balance, 18% rate, $50 payment, average dail...

**Math**

A car dealer carries out the following calculations. What is the annual percentage rate? (Round your answer to the nearest tenth.) List price $5,368.00 Options $1,625.00 Destination charges $200.00 Subtotal $7,193.00 Tax $431.58 Less trade-in $2,932.00 Amount to be financed $4...

**Math**

Find the amount of interest and the monthly payment for the loan. Purchase a car for $42,400 at 2.4% add-on rate for 5 years. (Round your answers to the nearest cent.) $_____ interest $_____ per month

**math**

Give the numbers of elements in the regions marked I, II, III, IV, V, VI, VII, VIII in the figure. |U| = 300, |A| = 30, |B| = 18, |C| = 16 |A¿B| = 4, |A¿C| = 3, |B¿C| = 6, |A¿B¿C| = 2 Give the numbers of elements...

**Math**

A poll was taken of 100 students at a commuter campus to find out how they got to campus. The results are below. How many are not using any of the three? 38 said they drove alone. 34 rode in a carpool. 33 rode public transportation. 9 used both carpools and public transportati...

**Math**

In a recent survey of 100 women, the following information was gathered. 38 use shampoo A. 40 use shampoo B. 50 use shampoo C. 16 use shampoos A and B. 7 use shampoos A and C. 17 use shampoos B and C. 4 use all three. How many are using shampoos A only? ______ women

**Calculus**

Suppose a reflector is attached to a 26 inch diameter bike wheel, 8 inches from the center. If the bike wheel rolls without slipping, find parametric equations for the position of the reflector. I thing i use parametrics????

**Calculus**

I can do the Ferris Wheel type. This one I can not solve. A light is attached to a 13 inch radius bicycle tire, at a point 8 inches from the center. If Harvey rides the bike at 15 mph, how fast is the light moving up and down at its fastest?

**Calculus**

wow I was headed that way didn't watch units Thank You very much

**Calculus**

A trough is triangular in cross section, an isosceles triangle with sides of 12 inches, and a top of 10 inches. The trough is 40 inches long. How fast is the depth changing if you are pumping one cubic foot per minute into the trough? I am having a hard time getting it in term...

**Algebra URGENT**

m = (y2-y1)/(x2-x1) 5/2-(-1)/(3-(-1/2)= (7/2)/7/2 =1 so slope of the equation is 1. No substitute one of the points into point slope equation and solve into slope intercept form: y-y1 =m(x-x1) y-(-1)=1(x-(-1/2) y+1=x+1/2 y = x-1/2

**Distribution Theory**

This is Geometric distribution. Let Y be r.v."No: of chldn before a girl" P(Y=y)=pq^(y-1)...therefore P(Y=5)=(0.5)(0.5)^(5-1)=0.03125.

**Math Problem**

You are playing a die game. If you roll 1, then the house pays you $25. If you roll 2, the house pays you $5. If you roll 3, you win nothing. If you roll a 4 or a 5, you must pay the house $10, and if you roll a 6, you must pay the house $15. What is the expected value of this...

**Math**

How many license plates with 3 decimal digits followed by 3 letters do not contain both the number 0 and the letter O if in building the plates you are not allowed to repeat any letter or any digit?

**social studies**

what did gold prospectors have to buy, and what did these items cost?

**Vocabulary**

inhibited is to qualms as

**math**

X2-8X+23=0

**computer information**

Create a flowchart for a program that will sort the top 1,000 customers by their annual purchase amount and print the names and addresses of the top 100 customers, or fewer if there aren’t 100 customers.

**Math Problems**

Bryan earns $6.25 per hour plus 1.75% commission on all goods sold. One week he worked 37 hours and sold $6,500 worth of goods. What were his weekly earnings?

**math**

what is the formula for 24.00 divided by 8?

**Math**

estimate 4 1/9+ 7 9/10+ 2 1/7 + 5 7/8=

**math**

Suppose you want to cover the backyard with decorative rock and plant some trees as the first phase of the project. You need 30 tons of rock to cover the area. If each ton cost $60 and each tree is $84, what is the maximum number of trees you can buy with a budget for rock and...

**math**

i need help to solve 3(x-4)=48

**Math Help please!!**

Could someone show me how to solve these problems step by step.... I am confused on how to fully break this down to simpliest terms sqrt 3 * sqrt 15= sqrt 6 * sqrt 8 = sqrt 20 * sqrt 5 = since both terms are sqrt , you can combine them. sqrt 3* sqrt 15= sqrt (15*3)= sqrt 45 sq...

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