Thursday
May 7, 2015

Posts by Lisa


Total # Posts: 3,123

statisics
A man rolls an ordinary die 6 times. What is the probability that he gets at least 5 threes? Round your answer to four decimal places.
February 7, 2011

statisics
I got 0.0001500
February 7, 2011

statisics
A man rolls an ordinary die 6 times. What is the probability that he gets at least 5 threes? Round your answer to four decimal places.
February 7, 2011

Algebra
Divide: (-8y^7x+15y^7x^6)/(-2y^2x^5) I got y^5(-8+15x^5)/-2x^4 It won't let me add parens. in the answer any suggestions. It does say simplify your answer as much as possible.
February 5, 2011

intermediate algebra
I got -y^5(15x^5-18)/2x^4 Is that right?
February 5, 2011

intermediate algebra
Divide: (-8y^7x+15y^7x^6)/(-2y^2x^5)
February 5, 2011

intermediate algebra
I got 20sqrt(2)-6sqrt(5)-2sqrt(10)+3
February 5, 2011

intermediate algebra
Multiply (2sqrt5 -1)(2sqrt10 -3)
February 5, 2011

Algebra
Find the slope of points (-2,2) and (2,1)
February 5, 2011

Algebra
thanks for the clarification I forgot to bring the 4 out as a 2
February 5, 2011

Algebra
Rewrite the following in simplified radical form. (sqrt24w^8) I got 4w^2sqrt6w is that right?
February 5, 2011

Algebra- is my answer right
I think it has to be written as m<= 80
February 5, 2011

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 !
February 2, 2011

algebra
list the terms, coeffcients, and degree of the following polynomial:x^4+6x^3-x+3/4
February 2, 2011

algebra
state the degree of the following polynomial : 2x^3y+7xy-9y
February 2, 2011

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
February 2, 2011

math
prime factorization of 980
February 2, 2011

math
5/7- 1/2 (1/3 + 3/7)
February 1, 2011

algebra 1a
Can you show me the step by step to solve -3(4y-2)<30?
January 30, 2011

algebra
y+x=-4
January 30, 2011

mat/116
solve by elimination method. 7r-2s=61 2r+7s=25
January 30, 2011

Writing EASY BRAINSTORMING
i want to known how to write it.
January 30, 2011

7th Math
Loises rate is 5 worfs per min sloer than coreys rate?
January 30, 2011

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
January 30, 2011

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?
January 30, 2011

math
i mean 33/240.9
January 28, 2011

math
33 / 240.90
January 28, 2011

math
15/8 as a mixed number
January 28, 2011

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.
January 27, 2011

Math
Solving First degree equations. 0.2x-0.3=0.1x+5 I am having a hard time entering this into my TI-84
January 26, 2011

math
simplify 4/5 - 1/2 (1/3 +3/8)
January 25, 2011

math
simplify 5/8 / 1/4 * 9/2
January 25, 2011

math
simplify 1/8 -(1/8)2 + (1/8)3
January 25, 2011

math
3 16/72+5 9/72= 8/25/72
January 25, 2011

math
8 25/72
January 25, 2011

math
Do I have to find the lcd first
January 25, 2011

math
find the average of 3 2/9 and 5 1/8 simplify and type a mixed number
January 25, 2011

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
January 25, 2011

math
simplify and write answer as a mixed number 13 1/48 - 2 1/2 + 3 1/3
January 25, 2011

math
the second one with out the parentheses around it
January 25, 2011

math
3/2 / 4/5 + 1/2 * 1/2 Simplify
January 25, 2011

math
find the average 1/3 ,3/8 ,1/24
January 25, 2011

math
18/8
January 25, 2011

math
find the average 1/3 ,3/8 ,1/24
January 25, 2011

math
what is 164/24 as a mixed number
January 25, 2011

math
find the average 1/3 ,3/8 ,1/24
January 25, 2011

math
find the average 6 1/7 and 7 3/8
January 25, 2011

math
simplify 3/2 / 7/10 /5/2
January 25, 2011

math
69.5
January 25, 2011

Psychology
hello any opinions?
January 25, 2011

Psychology
help please?
January 25, 2011

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
January 25, 2011

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.
January 24, 2011

chemistry
sorry, typed incorrectly...will repost.
January 24, 2011

chemistry
calculate the mass carbon monoxide, CO, that was needed to produce 78g of methanol, CH3OH, by the following reaction: 2H2 + CO - CH3OH.
January 24, 2011

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?
January 23, 2011

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?
January 23, 2011

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?
January 23, 2011

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....
January 23, 2011

alegbra
solve for, where u is a real number sqrt 9u - 10 = sqrt 5u + 16
January 23, 2011

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....
January 23, 2011

Psychology
ANY HELP PLEASE????
January 22, 2011

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 ...
January 22, 2011

Psychology
THANK YOU VVERY MUCH
January 22, 2011

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...
January 22, 2011

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}}?
January 22, 2011

american history (civil war)
what was the trent affair and how was it settled?
January 20, 2011

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?
January 17, 2011

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?
January 16, 2011

Accounts
hello anybody somebody???
January 15, 2011

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
January 15, 2011

english
Early in her life, Maude Gonne became a radical socialist and activist. what sentence pattern is this ?
January 12, 2011

Math
yes mx + B
January 12, 2011

Math
How do you get : x=1/3y+2 in the y=mxtb form ?
January 12, 2011

Precalculus
cos2x=cos(x+x)=
January 10, 2011

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)
January 9, 2011

Science
thanks :)
January 9, 2011

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.
January 9, 2011

math
To which sets of numbers does the square root of 31 belog too
January 9, 2011

psychology
briefly describe the developmental needs (physical,cognitive,social,emotional,cultural) at each stage of development over the lifespan
January 8, 2011

renting an apartment better option than buying a h
outline
January 8, 2011

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 ...
January 6, 2011

english
too funny. to comes before a verb or noun, and too comes before adjectives
January 6, 2011

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).
January 5, 2011

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.
January 5, 2011

ipc
Since Kinetic energy is defined as (1/2)mv^2 thus if v was doubled the kinetic energy would quadruple (2^2).
January 4, 2011

Statistics
Suppose a study found a correlation coefficient r = -0.61 between the gender of a worker and their income. What can you conclude?
January 4, 2011

microeconomics
how do i figure out how to answer the question of what is the opportunity cost of producing 200 pounds of potatoes?
January 3, 2011

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?
January 1, 2011

chemistry
рассчитайте константу равновесия реакции РС...
December 21, 2010

chemistry
What mass of water, in grams, would have to be decomposed to produce 28.7 L of molecular oxygen at STP?
December 20, 2010

Phsyics
the end velocity is 4m/s
December 17, 2010

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...
December 17, 2010

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 ...
December 16, 2010

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.
December 16, 2010

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...
December 16, 2010

Math
A nanometer is a unit equal to 0.000000001 meter. Write a expression to represents this number is scientific notation
December 16, 2010

Math
A pizza parlor has 2 1/2 pizzas left. Each pizza originally has 8 slices. How many slices are left?
December 16, 2010

calculus
x^2+3xy+2y^2=7
December 16, 2010

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?
December 16, 2010

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