Saturday
April 19, 2014

Posts by Lisa


Total # Posts: 2,926

intermediate algebra
Divide: (-8y^7x+15y^7x^6)/(-2y^2x^5)

intermediate algebra
I got 20sqrt(2)-6sqrt(5)-2sqrt(10)+3

intermediate algebra
Multiply (2sqrt5 -1)(2sqrt10 -3)

Algebra
Find the slope of points (-2,2) and (2,1)

Algebra
thanks for the clarification I forgot to bring the 4 out as a 2

Algebra
Rewrite the following in simplified radical form. (sqrt24w^8) I got 4w^2sqrt6w is that right?

Algebra- is my answer right
I think it has to be written as m<= 80

Chemistry
what is the percent by mass of oxygen in propanal, CH3CH2CHO? the answer is 27.6 %. but i need to know why, please help !

algebra
list the terms, coeffcients, and degree of the following polynomial:x^4+6x^3-x+3/4

algebra
state the degree of the following polynomial : 2x^3y+7xy-9y

algebra
Bob's Barber shop estimates their gross revenue for the second qaurter to be given by the polynomial 9x^3+4x^2-6x+9. The shop estimates their costs for that quarter to be given by 7x^2+2x+1. For the second qauter,find and simplify a polynomial that will represent their profit

math
prime factorization of 980

math
5/7- 1/2 (1/3 + 3/7)

algebra 1a
Can you show me the step by step to solve -3(4y-2)<30?

algebra
y+x=-4

mat/116
solve by elimination method. 7r-2s=61 2r+7s=25

Writing EASY BRAINSTORMING
i want to known how to write it.

7th Math
Loises rate is 5 worfs per min sloer than coreys rate?

7th Math
If Loiuse can type 70 words in 2 minutes and Corey can type 120 words in 3 minutes, which statement is true?? Loises rate is 50 words per minutes slower than coreys rate or Louise rate is 5 words per minutes slower than coreys rate

phys
An airplane must reach a speed of 185 mi/h to take off. If the runway is 500 m long, what is the minimum value of the acceleration that will allow the airplane to take off successfully?

math
i mean 33/240.9

math
33 / 240.90

math
15/8 as a mixed number

algebra
Suzies flower shop estimates that supplies cost for one month will be given by the polynomial 3x^2+7x-3. She estimates the utilities costs for one month is given by 5x+2 Find and simplify an expression that would estimate suzie's total cost for one month.

Math
Solving First degree equations. 0.2x-0.3=0.1x+5 I am having a hard time entering this into my TI-84

math
simplify 4/5 - 1/2 (1/3 +3/8)

math
simplify 5/8 / 1/4 * 9/2

math
simplify 1/8 -(1/8)2 + (1/8)3

math
3 16/72+5 9/72= 8/25/72

math
8 25/72

math
Do I have to find the lcd first

math
find the average of 3 2/9 and 5 1/8 simplify and type a mixed number

math
13 1/48- 2 1/12+ 3 1/3 =13 1/48 - 2 1/48 =13 1/48 - 2 4/48 =12 49/48 - 2 4/48 =10 45/48 10 45/48 +3 1/3 10 45/48 + 3 16/48 =13 61/48

math
simplify and write answer as a mixed number 13 1/48 - 2 1/2 + 3 1/3

math
the second one with out the parentheses around it

math
3/2 / 4/5 + 1/2 * 1/2 Simplify

math
find the average 1/3 ,3/8 ,1/24

math
18/8

math
find the average 1/3 ,3/8 ,1/24

math
what is 164/24 as a mixed number

math
find the average 1/3 ,3/8 ,1/24

math
find the average 6 1/7 and 7 3/8

math
simplify 3/2 / 7/10 /5/2

math
69.5

Psychology
hello any opinions?

Psychology
help please?

Psychology
Information which comes to a neuron must arrive through its: (Points: 5) axons. glial cells. prefrontal area. dendrites its either the axons or dendrites im not sure any help please..its confusing

chemistry - grade 9
calculate the mass carbon monoxide, CO, that was needed to produce 78g of methanol, CH3OH, by the following reaction: 2H2 + CO -> CH3OH.

chemistry
sorry, typed incorrectly...will repost.

chemistry
calculate the mass carbon monoxide, CO, that was needed to produce 78g of methanol, CH3OH, by the following reaction: 2H2 + CO - CH3OH.

algebra
A dehydrated patient needs a 7.9% saline IV. Unfortunately, the hospital only has bags of 3% and 10% saline solutions. How many liters of each of these solutions should be mixed together to yield 3 liters of the desired concentration?

algebra
A dehydrated patient needs a 7.9% saline IV. Unfortunately, the hospital only has bags of 3% and 10% saline solutions. How many liters of each of these solutions should be mixed together to yield 3 liters of the desired concentration?

algebra
A dehydrated patient needs a 7.9% saline IV. Unfortunately, the hospital only has bags of 3% and 10% saline solutions. How many liters of each of these solutions should be mixed together to yield 3 liters of the desired concentration?

Chemistry
In a 100g sample of water, determine the amount of weight that is attributed to Hydrogen and to Oxygen. i found the mass ratio which is 2:16 & then reduced its 1:8. then i set up my equation. 1x+8x=100g 9x=100g x=11.11111111 or 100/9 then i have to substitute. 1(100/9)= 11.111...

alegbra
solve for, where u is a real number sqrt 9u - 10 = sqrt 5u + 16

Chemistry
In a 100g sample of water, determine the amount of weight that is attributed to Hydrogen and to Oxygen. i found the mass ratio which is 2:16 & then reduced its 1:8. then i set up my equation. 1x+8x=100g 9x=100g x=11.11111111 or 100/9 then i have to substitute. 1(100/9)= 11.111...

Psychology
ANY HELP PLEASE????

Psychology
In her lecture concerning scientific method, Dr. Smith insisted that each of the steps must be used in order to arrive at a scientific finding. She included directions to __________ in her list of necessary components. (Points: 5) form a question and design a procedure for tes...

Psychology
THANK YOU VVERY MUCH

Psychology
Alexander, a fifth grade teacher, believes that Kimberly's behavior is a result of poor parenting. The school counselor is concerned with her inability to focus, attend to directions, and recall information from the previous day or events from earlier in the day. Alexander...

chemistry
What is the mass, in kilograms, of the air in a room that measures 14.0 \times\; 13.0 \times\; 9.5 {\rm{ft}}?

american history (civil war)
what was the trent affair and how was it settled?

algebra
there are 100 coins. ten are dimes. the rest are pennies and nickles. there are twice as many pennies as nickles. how many pennies and nickles are in the jar?

Accounts
On a worksheet, the adjusted balance of the Depreciation Expense account is extended to the __________ column. (Points: 5) Income Statement Debit Income Statement Credit Balance Sheet Debit Balance Sheet Credit I dnt understand what is meant by this any help please?

Accounts
hello anybody somebody???

Accounts
The Net Income amount from the Income Statement is used as a line item on which statement? (Points: 5) Profit and loss statement Statement of owner's equity Balance sheet Trial balance help please not sure what is meant by line item

english
Early in her life, Maude Gonne became a radical socialist and activist. what sentence pattern is this ?

Math
yes mx + B

Math
How do you get : x=1/3y+2 in the y=mxtb form ?

Precalculus
cos2x=cos(x+x)=

Chemistry
which substance takes the shape of and fills the volume of any container into which it is placed ? (1)H2O (l) (2)CO2(g) (3)I2(s) (4)Hg(l)

Science
thanks :)

Science
What occurs when a substance melts? 1) It changes from solid to liquid, and heat is absorbed. 2) It changes from solid to liquid, and heat is released. 3) It changes from liquid to solid, and heat is absorbed. 4) It changes from liquid to solid, and heat is released.

math
To which sets of numbers does the square root of 31 belog too

psychology
briefly describe the developmental needs (physical,cognitive,social,emotional,cultural) at each stage of development over the lifespan

renting an apartment better option than buying a h
outline

Intro to Business
The U.S. Supreme Court ruled that cities could have school voucher programs that give money directly to parents, who could then choose between competing schools, public or private. The idea was to create competition among schools. Like businesses, schools were expected to impr...

english
too funny. to comes before a verb or noun, and too comes before adjectives

chemistry
Determine how many liters of nitrogen will be required to produce 87.0 liters of ammonia. The balanced equation for this reaction is: 3H2(g) + N2(g) ==> 2NH3(g).

Algebra
standard form is y=mx+b so you would have to distribute 4 into x+5 then add 2 to both sides to get the equation equal to y.

ipc
Since Kinetic energy is defined as (1/2)mv^2 thus if v was doubled the kinetic energy would quadruple (2^2).

Statistics
Suppose a study found a correlation coefficient r = -0.61 between the gender of a worker and their income. What can you conclude?

microeconomics
how do i figure out how to answer the question of what is the opportunity cost of producing 200 pounds of potatoes?

derivatives
If the derivative of f is given by f'(x)=ex-3x2, at which of the following values of x does f have a relative maximum value?

chemistry
рассчитайте константу равновесия реакции РС...

chemistry
What mass of water, in grams, would have to be decomposed to produce 28.7 L of molecular oxygen at STP?

Phsyics
the end velocity is 4m/s

Phsyics
A 44.0kg seal at an amusement park slides from rest down a ramp into the pool below. The top of the ramp is 1.75m higher than the surface of the water and the ramp is inclined at an angle of 35.0 degrees above the horizontal. What is the coefficient of kinetic friction between...

phsyics
A young girl sits at the edge of a dock by the bay, dipping her feet in the water. At the instant shown in the figure , she holds her lower leg stationary with her quadriceps muscle at an angle of 39 degree with respect to the horizontal. Use the information given in the figur...

phsyics
A 8.0×10−2-{\rm kg} toy airplane is tied to the ceiling with a string. When the airplane's motor is started, it moves with a constant speed of 1.30 m/s in a horizontal circle of radius 0.41 m, Find the angle the string makes with the vertical.

Physics
A 44.0 kgseal at an amusement park slides from rest down a ramp into the pool below. The top of the ramp is 1.75 m higher than the surface of the water and the ramp is inclined at an angle of 35. degrees above the horizontal. If the seal reaches the water with a speed of 4.00 ...

Math
A nanometer is a unit equal to 0.000000001 meter. Write a expression to represents this number is scientific notation

Math
A pizza parlor has 2 1/2 pizzas left. Each pizza originally has 8 slices. How many slices are left?

calculus
x^2+3xy+2y^2=7

Math
The glass in a frame has an area of 91 m sqaurd. If the window length is 14 m, what is the window height?

math
how do you get back from 81/1 to 16/1

math
rudy went to the mall to spend some of his money he earned. he spent 1/3 of his money o n a new shirt. He then went to to the music store and bought a cd with 1/3 he had left. At dvds to go he bought a dvd with 1/3 of the money he had left. He stopped once more and bought a bo...

chemistry HELP!
The book says to use ICE

chemistry HELP!
Solve an equilibrium problem (using an ICE table) to calculate the pH of each solution: a solution that is 0.170 M in HC2H3O2 and 0.105 M in KC2H3O2

chemistry
Predict qualitatively whether the salts below dissolve to give solutions that are acidic, basic or neutral. what is the rule for figuring this out? a. KNO2 - basic b. Ng(NO3)2 - neutral c. NH4ClO2 - acidic d. NaHCO3 - basic

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