# Posts by Lisa

Total # Posts: 3,420

**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**

These triangles: 4,4,7 4,5,6 5,5,5 7,7,1 6,6,3 2,6,7 3,5,7

**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....

**algebra**

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....

**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 ...

**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 ...

**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 ...

**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 ...

**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

**Chemistry**

Calculate the pH of a solution at the endpoint of a titration involving 25.00 mL of CH3COOH at unknown concentration, and 21.40 mL of 0.100 M NaOH

**Chemistry!**

1. not sure where to find Kb as listed as 1.8E^-5? so is it 1.8E^-5= (NH4+)(NH3)/0.1-X (9.25)(4.75)/0.1-X = 439.375-X and how to I convert this to pOH and then to pH?