# Posts by Sophia

Total # Posts: 264

**please help me!! with this science!!!!!**

Thank you Elizabeth and Tris

**please help me!! with this science!!!!!**

Mary Chavez is wrong

**science**

Gg

**science**

You might have different traits

**science**

Fvv

**math**

Super Bowl Day!!

**math**

(5*7)/3

**cal**

sec^2(4x+y) * (4+y') = 4 4+y' = 4cos^2(4x+4) y' = 4cos^2(4x+y)-4 = -4sin^2(4x+y) Then sin^2(4x+y)=(4x/sqrt(16x^2+1))^2 =16x^2/(16x^2+1) So y' = -4(16x^2/(16x^2+1)) =-64x^2/(16x^2+1))

**math**

Len is baking a square cake for his friend wedding. When served to the guests, the cake will be cut into square pieces 1 inch on the side. The cake should be large enough so that 121 guests get one piece. How long should each side of the cake be?

**math**

A portrait of George Washington is square and has an area of 169 square centimeters. How long is each side of the portrait?

**physics**

A car accelerates uniformly from rest to a speed of 21.5 km/h in 6.9 s. Find the distance it travels during this time. Answer in units of m

**statistics**

8.5

**math**

On May 23, Samantha Best borrowed $4,000 from the Tri City Credit Union at 13% for 160 days. The credit union uses the exact interest method. What was the amount of interest on the loan?

**4 grade math**

10

**language**

감사합니다

**Algebra**

The profit for a company that sells chairs is defined by P= -5x^2+200x+200. Where P is profit and x is the number of chairs produced. Find the number of chairs "x" that will produce the maximum profit "P".

**Algebra**

An object is fired vertically upward with an initial speed of 68.6 meters/second. After t seconds, the height is shown by y= -4.9t^2+68.6t meters. Given that this object has an initial speed of 68.6 m/s, what is the maximum height it will reach? How long did it take the rocket...

**math**

15/20

**physics**

Answer is number 3

**physics**

. A block weighing 50 lbs is pulled horizontally w/ constant speed, if the coefficient friction between the surfaces in contact is 0.25, how much heat is generated by friction if the body moves a distance of 40 ft

**math**

how many grams go in 2,340 kilograms

**Math**

After 14 boys leave the concert, the ratio of boys to girls is 3 to 10. If there are p girls at the concert, write an algebraic expression for the number of boys at the beginning of the concert in terms of p

**math**

How do I estimate with adding

**Chemistry**

100 years

**PHYSICS URGENT! PLEASE FRICTION CASE 2**

A 13 kg box is at rest on a level floor. The coefficient of static friction µS = 0.9 and the coefficient of kinetic friction µK = 0.8. Audrey is applying a 140 N push at an angle (=20°) as shown in Figure 1. C) What is the magnitude of FNormal on box from Earth?

**Physics! Case II**

(45N(cos25°))/25N= 1.63m/s^2

**Physics! Case II**

A woman at an airport is pulling her 25.0 kg by a strap at an angle of 25 ° above the horizontal as shown in figure Fig. P5.44. She pulls on the strap with a 45.0 N force, and friction is negligible. What is the acceleration of the suitcase? ___m/s^2

**Chemistry**

What happens when NaCl(aq) and AgNO2(aq) are mixed? Also, will the mass increase, decrease, or stay the same after the mixing? Why? Thanks!

**College International Affairs**

How did the US affect the dissolution of the Soviet Union? What was the US/ Soviet Union relationship at the time period?

**math**

1st Step: 14x20=280 2nd Step: 280/8=35

**Math**

a box of chalk and 2 staplers cost $10. Three boxes of chalk and 2 staplers cost $18. Find the total cost of 1 box of chalk and 1 stapler.

**Precalc**

rewrite sinxtanx/(cosx+1) as an expression that doesn't involve a fraction.

**Precalc**

Rewrite cot(^2)xcosx/(cscx-1) as an expression that doesn't involve a fraction.

**Information Technology**

Develop an algorithm, flow chart and pseudocode that accept as input three unit test scores and a project score for seven students. The algorithm, flow chart and pseudocode should accept seven examination scores. The students's overall score comprised of their weighted mid...

**Math**

cscx/1-sinx

**Precalculus**

cotx-cos^(3)xcscx

**math**

Just took the quiz they are D B C

**math**

3x=10+13x

**Physics**

How exactly are you supposed to use the second equation to solve for Vb' if you don't know Va'^2?

**Chemistry**

@DrBob222 , can you explain how exactly you evaluated to get that number because im confused howd you got there

**Math**

The 4ft by 6ft has a solid red rectangular area that covers 1/3 of the flag. What could be the dimensions of this red area?

**Science**

During beta-particle emission, a neutron splits into a proton and an electron two protons two electrons two neutrons

**Physics**

A.) F=ma F= (50kg)(.92m/s^2) F= 46N a= 46N/60kg a= 0.77m/s^2 toward Jane

**math**

No because 4/14 Is not half of her paper If the answer was 7/14 then yes

**Spanish-8th grade**

I had to use the past tense of either poder or saber to write each sentence 1. tú y yo/mirar la televisión Tú y yo pudimos mirar la televisión. 2. nosotros/viajar Nosostros pudimos viajar. 3. los muchachos/jugar al fútbol Los muchachos ...

**medical coding**

person has upper respiratory infection w bilateral acute conjunctivitis .. whAT WOULD the code be?

**Math**

Gracias, Mi amigos

**Math**

Find the value of x or y so that the line passing through the two points has the given slope. (-1,4) (X,3); M=2/3

**physics**

What are the maximum values of the following when an incandescent 55-W light bulb (at 110 V) is connected to a wall plug labeled 110 V?

**comm215**

please help me correct my essay. the topic of the essay is:"Why overcrowding of school are causing teacher's to lose their jobs overcrowding? and how teacher layoffs are the result of overcrowding." below is a copy of the essay i wrote... One main concern both ...

**comm215**

it does not necessarily have to be facts, the answer can be based on my own opinion. I just need something to get me going.

**comm215**

I have to write a 300-400 words essay on the following questions: Why overcrowding of school are causing teacher's to lose their jobs? -how is teacher layoffs the result of overcrowding? Please help.

**comm215**

-Why overcrowding of school are causing teacher's to lose their jobs? -how is teacher layoffs the result of overcrowding?

**MATH**

WHAT IS THE UNPAID BALANCE AT THE END OF 1O YEARS OF A 250,000 LOAN WITH A INTERESRT RATE OF 6% THAT COMPOUNDS MONTHLY?

**science**

what is the height of a rock wall that is casting a 10ft shadow if a 6 ft bird watcher is casting a 14 ft shawdow

**Pre-Algebra**

What is a-3/5=1/5 ?

**English**

He took the test yesterday is it adverb or adjectives

**Algebra**

Laura can use the equation of: * 1 yard = 3 feet * 12 inches = 1 foot Figure out how many inches in a yard (36 inches = 1 yard) and then you do 36 x 20 and get your answer. Your answer will be 720 inches in 20 yards.

**Organic Chemistry**

If fructose, glucose, and sucrose are the only carbohydrates in honey, how could you use Benedict's reagent to determine the number of moles of sucrose in a 1.0g sample of honey?

**Physics**

Which would burn the most 100 g of water at 100 degrees C or 100 g of steam at 100 degrees C?

**Physics**

About how much pressure do the feet of a 6000-kg elephant exert on the ground? Assume each foot has area of 0.10 square meters.

**Physics**

What is the mass of the air in a room that has dimensions of 10m x 30m x 4m?

**Physics**

How many calories are released when 3 grams of 100º C steam turns to 0º C ice

**science**

6. identify the action-reaction pairs of forces for the following situations: (a) you step off a curb. (b) you pat your tutor on the back (c) a wave hits a rocky shore.

**algebra**

3x^3-2x^2y-8xy^2

**3rd grade math hw help!**

1polygos 1line: m w l

**accounting**

Canine Company produces and sells dog treats for discriminating pet owners. The unit selling price is $10, unit variable costs are $7, and total fixed costs are $3,300. What are breakeven sales?

**Math**

Factor 24 into primes.

**Chemistry**

“1.25 g of crushed limestone was added to 50.0 cm3 of 1.00 mol dm-3 hydrochloric acid (an excess). The mixture was left until all bubbling stopped and was then made up carefully to 250 cm3 with pure water. A 25.0 cm3 sample of this was pipetted into a conical flask and ...

**math**

You multiply pounds into ounces.

**5th grade**

How do you write a mixed number as a decimal such as 1/2 and the whole number 3? Also 3/4 and the whole number 4. Also 1/5 and the whole number 7. Thank you who will may help me!:)

**english 7th grade**

we:subject felt:action verb overwhelmed:do

**English**

what are some good acrostic poems about america

**Daily Language Review**

use context clues to determine the meaning of the boled words below

**science**

Need to use hypothesis in a sentence and draw a picture relating to it. Was Ben Franklins flying a kite a hypothesis or a theory?

**7th grade leadership**

terribly sorry....

**7th grade leadership**

ANSWER THIS QUICK BY TONIGHT!

**7th grade leadership**

This homeschooling group expects you to work harder than a college student. I need 5 subsidiary questions on "How is carrying capacity related to food supply" (you can say agriculture for the food supply) The teacher expects me to get these questions quickly and i&#...

**math**

20

**childcare**

My answer is C. locomotor reflexes

**Statistics**

quantitative

**english**

why did the mayor decide not to teach his wife how to drive in the novel the color purple?

**9th grade algebra**

daniels print shop purchased a new printer for $35,000. Each year it depreciated at a rate of 5%. What will its approximate value be at the end of the fourth year?

**Math**

i don't know

**Physics**

Hi, The resistance of each resistor in a series-parallel circuit was given and we measured the current and voltage across each resistor. Now, I have to find the theoretical values for I1, I2, etc. and V1, V2, V3, etc., using Kirchhoff's law and the known resistance values ...

**math**

how to solve a graph plot

**Social Studies**

What were the 4 dynasties of Ancient China ? Please give me information on each one regarding government, social hierarchy, religion and accomplishments.

**maths**

what is 200000 divided by 439?

**maths**

what is the mean weight of these bags: 2kg,5kg,6kg,11kg,7kg amd 5kg ?

**English III**

Paine beleives that god will suport the colonies' cause because the colonists?

**Math**

1 hour and 35 minutes or 95 minutes

**Math**

1 hour and 35 minutes

**Math**

here is the question: Freida must take a 4-hour exam containing 200 questions, 50 of which are math. Twice as much time should be allowed for each math ques as for each other type of question. What is the total # of minutes she should allow for the math question?

**history**

THANK YOU SO MUCH

**history**

Oh i did but it doesnt say a specific date, it just says 6,000 years ago and 1940 it came to america.

**history**

oh but like where? to egypt? and when? like what BC/AD

**history**

Garlic- To where did this food product spread from its point of origin? Be sure to include time periods. HELP!! I CANT FIND ANYWHERE

**math**

Put into slope intercept form: (2,5) m=3 I have a quiz tomorow, and i need to make sure im doing the steps right, so then do you do..: ? 2=15+b -13=b y=3x-13 ???

**math**

how did you get b= 28000

**math**

The value of a car decreases at a constant rate as it grows older. When the car is 2 years old, it is worth $23,000. When the car is 5 years old it is worth $15,500. Write and equation relating y (value of the car $) to x (age of car). Is it y-23,000=-2500(2)-5 ??