# Posts by Selena

Total # Posts: 227

**math**

a right rectangular pyramid has base dimensions 7yd. by 5yd. and a height of 10yd. determine the surface area of the pyramid to the nearest square yard.

**physics**

hiw much heat is needed to raise the temperature of 0.800 kg. ethyl alcohol form 15.0 celcius to its boiling point 78.3 celcius

**Algebra**

5. Solve for x in the following system. 6x + 6y = -2 y = x I can't seem to figure this out, can someone give me some steps into solving this? I've tried so many times.

**Math**

So you have to do 1 minus 0.4052 to get your answer?

**Math**

The probability of winning a large stuffed animal in the ring-toss game at a fair is 10%. Find the probability of winning at least 5 of 50 games using normal approximation. I got 0.4052 but answers says it's 0.5932. Please help!

**math**

Josh poured 38 gallons of water into 6 buckets. He poured the same amount into each bucket. How much water did Josh pour into each bucket?

**Algebra help?? Stuck!**

The equation y=?0.065x2+6.875x+6200 models the amount y of sugar (in pounds per square foot) produced where x is the amount of fertilizer (in pounds per square foot) used. What is the best approximate for the amount of sugar produced when 3 pounds per square foot of fertilizer...

**Math Ms.Sue Help**

Thank You

**Math Ms.Sue Help**

Which data value has the highest frequency? A) 1/16 B) 3/16 C) 3/8 D) 5/8 A number line with four x's above one sixteenth, one x above three sixteenths, one x above three eighths, two x's above one half, two x's above five eighth, and one x above three fourths. I ...

**Math**

Why id gonzo walk around carrying ice cream and a pair os sparrows

**Math algebra**

David Robertson works as a chemical engineer for U.S. peroxide Corporation. David has 2500 gallons of commercial-grade hydrogen peroxide solution that is 60% pure hydrogen peroxide. How much distilled water(which is 0% hydrogen peroxide) will David need to add to the solution ...

**Chemistry**

What are the elements in Group A1 on the periodic table? alkali metals alkali earth metals inner transition metals ** halogens

**English**

Well for the first one I immediately scratched out C and D because they didn't make sense and had nothing to do with what the question was asking, so I stuck between A and B because but now I'm re-thinking and feel it might be D. Could you explain why my choice was ...

**English**

Why is it important that "The Story of an Hour" takes place in the nineteenth century? In the nineteenth century, women were not considered equal to men. *** The characters use nineteenth-century expressions that are hard to understand. *** Nowadays, people don't...

**Math3c**

1.Find an A.P. such that the sum of the first three terms is one half the sum of the next four terms,the first term being 12. 2.In an A.P.,the sum of the first three terms is 18,and the sum of the squares of these terms is 126.Find the terms.

**chemistry**

Some physical properties of water are shown below: melting point 0.0°C boiling point 100.0°C specific heat solid 2.05 J/g·°C specfic heat liquid 4.184 J/g·°C specific heat gas 2.02 J/g·°C ΔH° fusion 6.02 kJ/mol ΔH° ...

**Math**

Sally has a recipe that needs 1 1/2 tsp. of butter for every3 cups of milk. If Sally increases the amount of milk to 13 1/2 cups of milk, how many tsp. of butter are needed?

**Math**

Peter's lawn is 4800 square feet in area, and he mowed 1200 square feet of it. What fraction of his lawn still needs to be mowed?

**math please help**

find the midpoint of a segment with endpoints at (7,9) and (-1,-1)

**math**

i am less than 45 greater than 35 divisible by 10,5 what number am i

**Physics**

An 1750 kg weather satellite moves in a circular orbit with a gravitational potential energy of 1.69 x 10^10 J. At it's location, free-fall acceleration is only 6.44 m/s^2. How high above Earth's surface is the satellite?

**Chemistry**

Consider the chemical reaction below equated 2N2O5 (g) -> 4NO2 (g) + O2 (g) knowing that a certain period of time, N2O5 consumption rate is 0.10 mole / s, determine for the same time interval: a) the average rate of formation of NO2 b) the average speed O2 formation

**math help please**

The national debt of a small country is 7,730,000,000 and the population is 2,484,000. What is the amount per person?

**English 2**

Write an essay of at least 250 words that describes and explains examples of figurative language you found in Animal Farm when you completed your response journal on that topic. Include one example of each of the five types of figurative language from the words or phrases you ...

**science**

5566

**Math**

what is the difference between |-3| and -3.

**Health**

Socialize. It makes sense. You wanna be around people so they can help you.

**Math**

Thank you!!!

**Math**

Write the expression as a single fraction and simplify. 3/a + 3/b Is this when you cross multiply and get 3a + 3b? Except the answer has to be a fraction so I am not sure.

**probability**

Please help me solve this problem step by step pleaseeee! The probability that an archer hits the target is p= 0.8, so the probability that he misses the target is q = 0.2. It is known that in this situation the probability that the archer hits the target exactly r times in n ...

**Algebra**

Can anybody help me on this problem for my Algebra 2 class, I am having a hard time tyring to solve it step by step. The probability that an archer hits the target is p = 0.8, so the probability that he misses the target is q = 0.2. It is known that in this situation the ...

**Algebra**

I need help step by step please I keep getting a wrong answer of 252? Find the 24th term in the expansion of (a + b)^ 25

**Algebra**

I need help step by step please I keep getting a wrong answer of 252? Find the 24th term in the expansion of (a + b)^ 25

**Algebra**

Can anybody help me on this problem for my Algebra 2 class, I am having a hard time tyring to solve it step by step. The probability that an archer hits the target is p = 0.8, so the probability that he misses the target is q = 0.2. It is known that in this situation the ...

**Calculus**

A strong swimmer is one mile off shore at point P. Assume that he swims at the rate of 3 mile per hour and walk at the rate of 5 miles per hour. If he swims in a straight line from P to R and then walks from R to Q, how far should R be from Q in order that he arrives at Q in ...

**Calculus**

A wire 17 inches long is cut into two pieces. One piece is bent to form a square and the other is bent to form a rectangle that is twice as wide as it is high. How should the wire be cut in order to minimize the total area of the square and rectangle?

**Logs**

log (sqrt4(x^16 / y^4)) What is the value of the expression when logx=8 and logy=1? My work: x=10^8 y=10 I tried to plug these in but my calculator but it said "overflow." Is there an easier way to do this?

**Math**

(-3,5) (-2,-6) I do not understand equation of a line

**Math**

equation of a line (-3,5) (-2,-6) can you help with this exercise

**physics**

calculate the linear speed of a point on the record at the beginning and the end of the record that rotates at 33rev/min r1=7cm,r2=15cm

**physics**

Please answer

**United states history**

What similarities do you see between the United States today and the United States of the past? What issues and problems do we continue to grapple with? What successes do we share with Americans in the past? I want to find something now in united states that was similar to the...

**math**

what is 82 over 100 in simplest form?

**US Gov't**

Which Roman contribution to political theory was adapted by the Founding Fathers?

**Geometry**

P->P'(-8,-3) for the glide reflection where the translation is (x,y)->(x,y-5) and the line reflection is x=-5. what are the coordinates of P? (-8,-8) (-8,2) (-2,-3) (-2,2)

**Math 11**

an airplane is flying 100km north and 185 km west

**English**

Of Mice an Men

**English**

1. Why does George try to prevent Lennie from playing with small animals? (1 point) He doesn't want Lennie to have a pet until he proves he can keep out of trouble. He is worried that Slim will be angry if Lennie plays with the puppies. He is embarrassed by Lennie's ...

**Chemistry**

Weight of the Rock Salt Sample: .343 (g) Weight of the Rock Salt Solution: 9.910 (g) Trial #1 Trial #2 Trial #3 Weight of Rock Salt Solution Delivered (g) : .89 1.17 .786 Weight of AgNO3 Solution Delivered (g) : 1.53 .548 .786 Concentration of AgNO3 : 4.70e-4 (moles of AgNO3/g...

**Physics**

I don't know if my answers are right. D: 1)Why is a time interval always positive? I'm not really sure but I wrote down something with vectors and scalars. 2)If the average acceleration of a car is zero in a given time interval, what can you tell about the displacement...

**Physics**

Thank you guys so much ! ^^

**Physics**

Little Timmy falls down a well and hits the water 1.5s later. Determine the distance from the top of the well to the water below. Just an equation would be fine. Thanks in advance.

**Algebra 2**

Nvm, I got it >u<

**Algebra 2**

I need to use zero product property on these equations and I just need a few examples to get myself started on the other problems since I don't understand it at all. :c Help is appreciated. Thanks in advance. f(x)=x^2+8x+12 g(x)=6x&2+20x-16

**Physics**

Starting from rest, Mr.M's bus achieves a velocity of 25 m/s in a distance of 1.0 km. Find the time and the acceleration. I don't know which formula to use. Delta T = Vf - Vi / Aavg ?

**Physics**

Thank you so much! You didn't have to solve it for me, I only needed the formula, but thanks a lot!^^

**Physics**

A car enters the freeway with a speed of 7.2 m/s south and accelerates uniformly for 4.2 km in 4.0 min. How fast (in m/s) is the car moving after this time? I only need the formula. My teacher gave us a list but did not tell the class which equation is for which. Help please.

**Chemistry**

What is the molarity of HCL if it takes 16.5 mL of 0.100 M NaOH to titrate 10.0 mL of HCl? HCl + NaOH -> H2O + NaCl molarity = moles of solute/liters of solution

**AP Calculus**

Find an equation of all tangent lines for the curve x^2-xy+y^2=16 x=-2 2x-(xy'+y(1))+2yy'=0 2x-xy'+y+2yy'=0 y'(-x+2y)=-2x-y y'=-2x-y/-x+2y y'=-2(0)-y/-(0)+2y y'=-y/2y Not sure what to do now?

**math**

By subtracting and AddINg

**Operating Systems**

Given that main memory is composed of only three page frames for public use and that a seven-page program (with Pages a, b, c, d, e, f, g) that requests pages in the following order: a, c, a, b, a, d, a, c, b, d, e, f. Using the FIFO page removal algorithm, indicate the ...

**physics**

To estimate how high the cliff is you throw a rock off the edge and 7.8 s later you hear the rock hit the ground. The speed of sound is 330 m/s. Ignoring air resistance how high is the cliff?

**math**

why is when you equal Pythagorean Theorem the c does nt have the squard

**Math**

That helped a lot Steve. Thank you.

**Math**

The president of Texas state University makes three times as much money as one of the department heads. If the total of their salaries is 290,000, find each worker's salary.

**Algebra**

thanx damon :D

**Algebra**

Simplify: b. 4√10-√10

**Algebra**

thank you peeps

**Algebra**

What are the solutions to the system? (Hint: graphing is the easiest!) y = x2 + 2x - 45 y = -3x + 5

**math for me!!!!!!**

cross multiply

**Algebra**

lol damon answers all my question soooo thanx very much XD

**Algebra**

Use the Zero Product Property to solve the equation: -3m(2m – 5) = 0

**Algebra**

thanx both of yall XD

**Algebra**

A ball is thrown into the air. The height in feet of the ball can be modeled by the equation h = -16t2 + 20t + 6 where t is the time in seconds, the ball is in the air. When will the ball hit the ground? How high will the ball go?

**History**

what was the climax of british French rivalry in north American?

**Chem**

What will the products be for Ni(s) + 2Na^+(aq)? I don't think this is even possible, so will this reaction even be possible?

**Chem**

What is the product for the reaction of Ni(s) + 2Na^+(aq)? I don't think this is possible no?

**Chemistry**

3) A student mistakenly uses the cuvette containing the most dilute standard solution, rather than the cuvette containing deionized water, as the blank solution. I don't understand why there would be lower concentration of Cr(VI) ion...

**Algebra 1b!**

1. Find the excluded value of x for the polynomomial expression 4x/6 a. 6 b. -6 c. 1/6 d. -1/6 2. Simplifly 3-2x/7 + 4x+5/7 a. 2x+8/14 b. 2x+8/7 <--- c. x+1/7 d. 2x+2/7 3. Simplify 6ab^6/4a^7b^10 * a^3b^4/2a^7b^6 a. 7x/8 - 2x/8 b. -5x/8 c. 3a^2b^3/4a^7b^8 d. a^2b^5/2a^7b^8...

**Earth space science, check answers?**

A. 75 % B. 12.5% C. 25% D. 3.13% E. 9.38% 3. what percentage of land on the earths surface is inhospital lands? - B 4. what percentage of earths surface is covered by land? - C 5. what percentage of land on earth is usable, for living on, but not for agriculture/farming?-D 6. ...

**Check my answers?**

Earth space science.

**Check my answers?**

A. 75 % B. 12.5% C. 25% D. 3.13% E. 9.38% 3. what percentage of land on the earths surface is inhospital lands? - B 4. what percentage of earths surface is covered by land? - C 5. what percentage of land on earth is usable, for living on, but not for agriculture/farming?-D 6. ...

**Earth space science**

Well lets say For city A; 57. 156. 53 b;61. 135. 56 c; 58,136. 11 d; 67.65.198

**Earth space science**

I need help with this. the map doesnt show anything and idk how to post the map on here... Match the cities A,B,C, and D with the weather description of the surface model (To the right of each letter) a. city A b. City B c. City C d. City D A. Pressure of 1015.1 and south east...

**Algebra 1b!**

Could you guys check my answers? 1. Graph the function and identify the domaine and range. y=-1.5^2 Domain; (-,+) Range; (-,0) ( my answers.) 2.How is the graph of y=-2x^2-5 different from the graph of y=-2x^2 It is shifted units up it is shifted 5 units down <--- It is ...

**English!**

This is what i got so far but i need help with an opening paragraph and conclusion Mark twain used huck as narrator to see the innocent view of these difficult adult themes. in the eyes of a child, the morality of the situations he finds are much more concerning than most ...

**English**

For english i'm doing facts about mark twain and if i put " Around all of the facts, is it still plagiarism?

**Huckleberry Finn**

And i know, i just need all the notes before i write.

**Huckleberry Finn**

For the third; Tom sawyer and Huckleberry Finn both loved going on adventures,where it was pretend and really loyal to friends.. Tom was more imaginative but in some ways the less kind hearted of the two. Write about one of the authors we have studied. ANd last In 1846, when ...

**Huckleberry Finn**

Well for the first 2 i got answers. But this is an expository essay rough draft and we choose a short story and write about it with these questions. First one my answer is; He used huck as narrator to see the innocent view of these convulted adult themes. in the eyes of a ...

**Huckleberry Finn**

Explain how the author created the character (characterization). Explain the theme of a piece of literature. Compare and contrast two pieces of literature. Write about one of the authors we have studied.

**Math**

42000 and 48000 44286

**physical science**

I am having a little trouble with this problem. can someone please HELP! During a race, a runner runs at a speed of 6m/s. 2 seconds later, she is running at a speed of 10 m/s what is the runner's acceleration?

**math**

How would I solve this; John is paid at an hourly rate of $15 and over time rate of 1.5 times his hourly rate. If john puts in w regular hours and y overtime hours in a week, what is his total wage for the week? (Monday-Friday

**math**

1/2 + (-5/6) =?

**physical education**

*sure

**physical education**

What nutritional supplement is recommended for helping the body handle stress? A. Zinc B. Iron C. Vitamin C D. No supplements are recommended for stress management I think its a but im not sue please help

**english**

Which of the following is not a correct option for writing out the date in question? A. 25 January 2000 B. January 25, 2000 C. 2000, January 25 D. 01/25/00 I think this one D

**english**

Regarding the use of commas, which one of the following statements is accurate? A. A parenthetical use of commas is usually confusing to the reader. B. There is no need for commas that indicate added details in a sentence. C. Commas are needed to separate a list of three or ...

**englis**

8. Which of the following options accurately represents the steps involved in the writing process? A. Write first draft, edit, revise, write final draft B. Write first draft, revise, proofread, write final draft C. Plan, write first draft, edit, write final draft D. Plan, ...