Monday

May 2, 2016
Total # Posts: 481

**Plz do help..GEOMETRIC SEQUENCES**

let the beginning of year 1 = B1 (the first year after she earned 32000) B1 = 32000 x 1.04 B2 = (32000 x 1.04) x 1.04 = 32000 x 1.04^2 B3 = (32000 x 1.04^2) x 1.04 = 32000 x 1.04^3 Bn = 32000 x 1.04^n
*April 28, 2016*

**Math**

Walking along two of its adjacent sides: 24 + 18 = 42cm Draw the diagonal (to form two triangles). Find the hypotenuse of one of the triangles to find the diagonal. Use pythagoras theorem: c = sqrt[a^2 + b^2] = sqrt[24^2 + 18^2] = 30cm Therefore, it is 12cm shorter to walk ...
*April 28, 2016*

**maths**

I think 18 works. (18/2)^2 = 81
*April 28, 2016*

**maths**

Let Kate = k, let her son = s k - 5 = 5(s - 5) (You have to take 5 years from both their ages) k = 5s - 20 (1) k + 5 = 3(s + 5) - 8 k = 3s + 2 (2) sub (2) into (1) 5s - 20 = 3s + 2 2s = 22 s = 11 sub into (1) k = 5 x 11 - 20 k = 35
*April 28, 2016*

**Math**

Ethan had $12 more than Dakota. Ethan then gave 1/3 of his money to Dakota. The ratio of money Ethan had to the amount of money Dakota had then became 5:7. How much money did Ethan give to Dakota?
*April 27, 2016*

**math**

5^2 = 25 sqrt 25 = 5 Therefore, option 3
*April 23, 2016*

**Maths**

the length of the arc of a sector is given by the radius times the angle bisected at the centre. l = 14 x 45 = 630cm Then you just add twice the radius (the two sides of the sector) The perimeter = 360 + 14 + 14 = 388 cm I don't believe you need to use pi in this question.
*April 23, 2016*

**Math**

You need to get a common base. In this question, your bases are 36, 6, 6. Use a base of 6 (and hence change 36 to 6). 36 = 6^2 36^5x = 6^2(5x) = 6^10x Your equation now is: 6^10x = 6^(x+x-2) INDEX LAWS Since we have the same base, the powers must be equal: 10x = x+x-2 8x = -2 ...
*April 23, 2016*

**Maths**

I feel like this question might be missing some vital information. Is this a 3D trigonometry question? If so, I'm not sure it can be solved without being given an additional length or some bearings/elevation angles.
*April 23, 2016*

**Math**

To find the capacity (amount of water), you must first find the volume. This prism is a cylinder (since it has a circular base). Find radius: Circumference = 2πr r = C/2π = 16/2π = 8/π feet (= 2.55) Find volume: Volume = Area x height = πr^2 x h = &#...
*April 23, 2016*

**Mathematics**

Don't worry, I've got it. I used the substitution u = 1 + lnx and got the answer
*April 23, 2016*

**Mathematics**

Find using substitution: ∫ 1/[x(1+lnx)^2] dx I'm not sure what substitution to use.
*April 23, 2016*

**Algebra**

If this is a multiple choice question, can't you just test each? e.g. for (A): -160 x -2 = 320 Therefore, the answer is "multiply the previous term by -2" To check that the rest are incorrect: for (B): -160 /2 ≠ 320 for (C): -160 - 60 ≠ 320 for (D): -...
*April 23, 2016*

**lambton**

The acceleration is centripetal (circular): a = velocity^2 /radius (formula) = 240^2 /24 = 2400 rad/s^2 Linear velocity is calculated using the formula v = u + at. That is: final velocity = initial velocity + acceleration x time linear velocity = 0 (since at rest) + 2400 x 15...
*April 22, 2016*

**Math**

f(x) = 3x + 5 f(x) = 6x^2 + 1 g(x) = 22 - 8x^3 H(x) = 14x^2 + 52x^3 - 8√x It can really be any algebraic expression. A function is defined as "a relation from a set of inputs to a set of possible outputs where each input is related to exactly one output." For ...
*April 22, 2016*

**cal**

You haven't actually posted a question. What are you differentiating?
*April 22, 2016*

**MATH**

I'm not sure how you found the length given only the height and width. Why divide by 4? Were you also given the volume?
*April 22, 2016*

**Mathematics**

I've just found that integration formula (which I'd forgotten about). No wonder I kept getting stuck! Thank you.
*April 22, 2016*

**Mathematics**

Find, using substitution, the integral of: e^x /sqrt[e^(2x) -1] dx
*April 22, 2016*

**Math**

x-2 ≥ 3 (+2 to each side) x ≥ 5 since p = x-2, p will always be positive (lowest value of x is 5, which would make p = 5-2 = 3, i.e. positive)
*April 22, 2016*

**Mathematics**

Don't worry - I've figured it out.
*April 22, 2016*

**Mathematics**

Use substitution to solve: sec^2x/(tan^2x -1) dx What substitution should I use (what should I let 'u' equal)? I've tried using substitutions for tan or sec, i.e. tan^2x +1 = sec^2x , but I can't get the answer.
*April 22, 2016*

**Math**

0.64, 2.50 (π-0.64) I'm not sure what is meant by part (b), but in the given domain, the only two answers are 0.64 and 2.50 (2 decimal places)
*April 21, 2016*

**Math**

1 batch = 2.5 cups flour 0.75 batch = ? cups flour To get to 0.75 batch from 1 batch, we multiply by 0.75. We must therefore do the same to the right-hand side. As Ms. Sue has said, the answer will be 2.5 x 0.75 = 1 7/8 cups
*April 21, 2016*

**Algebra**

Jay weighs 20 pounds more than Dan whose weight is twice what Kirsten's is. Their total weight is 320 pounds. How much does Kirsten weigh?
*April 12, 2016*

**Geography**

In which countries are the borno people found? What challenges might this create? Could there be any advantages to these circumstances?
*April 11, 2016*

**Geometry **

a flag pole is 25 ft high. your line of sight is 5 ft from the ground. the angle of elevation is 23 degrees, how far away from the base of the flag pole are you?
*March 18, 2016*

**Precal**

How do i prove that left side equals right? Cot(A+B)=cotAcotB-1/(cotA + cotB)
*March 15, 2016*

**MATH!**

An experiment consists of rolling a weighted die. The probability of rolling each number is: Pr[1]=0.05, Pr[2]=0.1, Pr[3]=0.25, Pr[4]=0.25, Pr[5]=0.2, and Pr[6]=0.15. On the first roll, you record if the number is Small (1,2) or Large (3,4,5,6). If the first number is Small, ...
*February 24, 2016*

**Math**

A new law requires that 15 of an individual’s income be invested in the stock market. Your accounts show that you need to put $435 in the stock market this year. How much did you earn this year? $5,040 $350 $504 $3,500 Refreshing this question, I got $3,500, but, I don&#...
*February 3, 2016*

**Please help on math.**

Bad typo, 11.76. Okay, I got it right. Thank you.
*February 3, 2016*

**Please help on math.**

Can you check these, too? A new law requires that 15 of an individual’s income be invested in the stock market. Your accounts show that you need to put $435 in the stock market this year. How much did you earn this year? $5,040 $350 $504 $3,500 *** On a factory floor, 20 ...
*February 3, 2016*

**Please help on math.**

Write the fraction as a percent. If necessary, round to the nearest tenth of a percent. 6/15 a. 40.0% *** b. 37.5% c. 33.3% d. 46.7% Write the fraction as a percent. If necessary, round to the nearest tenth of a percent. 6 4/5 a. 68% b. 6.8% c. 6.4% d. 680% *** Write the ...
*February 3, 2016*

**Math, all correct?**

Oops! Write the fraction as a percent. If necessary, round to the nearest tenth of a percent. 6 4/5 a. 68% b. 6.8% c. 6.4% d. 680% ***
*February 3, 2016*

**Math, all correct?**

Write the fraction as a percent. If necessary, round to the nearest tenth of a percent. 6/15 a. 40.0% *** b. 37.5% c. 33.3% d. 46.7% Write the fraction as a percent. If necessary, round to the nearest tenth of a percent. 6 4/5 a. 68% b. 6.8% c. 6.4% Write the percent as a ...
*February 3, 2016*

**Science**

Why is the Grand Canyon a natural physical system
*January 9, 2016*

**Algebra**

Can you please tell me how to do this question: Translate the phrase "8 less than the quantity 17 times a number, n.
*December 12, 2015*

**Math**

1)Carson lost 5 pounds in one week. What property is used in this situation? Why? 2)Frankie wanted to buy a new hat for $14, but left the store without buying anything. What property is used in this situation? Why?
*December 7, 2015*

**math**

2. Manufacturer A produces hammers that are normally distributed with a mean weight of 4.6 lb and a standard deviation of 0.8 lb. Manufacturer B produces hammers that are normally distributed with a mean weight of 6.3 lb and a standard deviation of 1.4 lb. (a) What percentage ...
*November 17, 2015*

**social studies please help me just 3 questionsASAP**

1- one serious problem caused by growing population is________? A. a higher death rate B. not enough available jobs. C. too much energy production.***** D. fewer medical advancements. 2- Large numbers of people have moved from rural areas to urban areas because the want ...
*November 12, 2015*

**Algebra**

110.00 + 125.00 + 32.00 =267.00
*September 16, 2015*

**Algebra**

A cash drawer has $267.00 total. There are no bills larger than a 10. There are 11 tens and 7 more 1s than 5s. How many of each bill is there?
*September 16, 2015*

**maths**

Yes 6 more present
*September 7, 2015*

**maths**

There are 28 in our class. One day there were 6 times as many present as there were absent. How many were present? How many were absent?
*September 7, 2015*

**precalc**

write an equation to match each description. 1) a snowball is 8 cm across and melting so that its diameter is decreasing at a steady rate of 0.2 cm/min. write an equation for d(t), the length of the snowball's diameter at time t. answer: d(t)=8-0.2t 2) horizontal line ...
*September 1, 2015*

**calc**

sorry about that
*August 29, 2015*

**calc**

rewrite into slope intercept form. 1) 3x-2y=7 answer: y=3/2x-7/2 2) 8x=y-1/2 answer: y=16x+1 3) 4x+2/3y=8 answer: y=-6x-12 are these correct?
*August 29, 2015*

**Chemistry**

Use the data in the table to determine how long it will take for half of the original amount of SO2Cl2 to decompose at the average reaction rate. Experimental Data for SO2Cl2(g) → SO2(g) + Cl2(g) Time (min) [SO2Cl2](M) [SO2](M) [Cl2](M) 0.0 1.00 0.00 0.00 100.0 0.87 0.13...
*August 7, 2015*

**chemistry**

suppose that a large volume of 3% hydrogen peroxide decomposes to produce 12mL of oxygen gas in 100 s at 298 K. Estimate how much oxygen gas would be produced by and identical solution in 100s at 308 K hi can you please help me set up this problem, then I can do the math, I ...
*August 6, 2015*

**Chemistry**

I really need help with this I am really confused with the law, I have looked at multiple examples and I am still so confused, I know you can't give me the answer, but is there anyway you could please take me through this question step by step? Use Hess's law and ...
*August 4, 2015*

**Math**

Profit from a car boot sale- Shared 5:2 Sita. Rhys Sita gets £30 How much does Rhys get? PLEASE SOMEBODY HELP ME WITH THIS QUESTION!😫
*May 4, 2015*

**Math**

Sorry, yes I forgot the decimal in number 1. On number 2, on my paper is says that 1 meter equals about 3 feet so I just multiplied 2.8 by 3 and got 8.4. On number 3, would that now be correct because I have 2 correct? On number 4, we had to estimate and not use a calculator ...
*April 28, 2015*

**Math**

Can someone please check my answers? A yard has a square gate that has an area of 8 square meters. 1. What is the height of the gate in meters? Answer: 28 meters 2.How many feet would that be? Answer: 8.4 feet 3. If each side was 1 foot longer, what would be the area of the ...
*April 28, 2015*

**geometry**

question is: find the coordinates of midpoint P of line BC. Calculate lengths of AP, BP, CP. P is ? (midpoint of BC which bisects <A(0,0), B(0, 2k), C(2h,0). Thank you.
*April 15, 2015*

**geometry**

Henry -- on 1-24-14 you answered the question of the trangle ABC with midpoint of P. She didn't ask for P. What would it be?
*April 15, 2015*

**geometry**

I need help with following problem. I have (2||lines (AB and CD). A line intercepts which I called AE. (<A is 32 degrees).Middle of AE I put an (F) on top <)on line CD and (X is bottom <)of line CD. I need to find x. Help is appreciated.
*April 14, 2015*

**geometry**

Complete the flow proof for a Hypotenuse-Angle Theorem. Given AC congruent DF, <C congruent <F. <B and <E are right angles. Prove triangle ABC congruent triangle DEF. Thanks for tutors.
*April 10, 2015*

**geometry**

given <1= (and curved on top of = sign), proof that m<1 = m<5. statement reason 1. <1=(with line above<2 given 2. <2 = (with line above = sign)<5 symmetry of property of equality 3. statement blank reason transitive prop. of angle congruence (was given) 4....
*April 7, 2015*

**Social Studies south asia**

why was the migration of the aryans to india significant?
*March 23, 2015*

**Math**

24/4 48/4 96/4 192/4
*March 23, 2015*

**Social Studies**

its c- both embraced the idea of religious tolerance
*March 19, 2015*

**Social Studies**

What characteristic did the Mauryan and Mughal empires share? a.Both helped spread Buddhism. b.Both helped spread Islam. c.Both embraced the idea of religious tolerance. d.Both were begun by Aryan people I think either a or d Help?
*March 19, 2015*

**L.o**

Since social media is an ongoing trend we can use it to address human rights violations of xenephobia?
*March 8, 2015*

**science**

if the alleles are Bb then it would be tall right ( B is tall little b is short.)
*March 6, 2015*

**science**

Which explains how the greenhouse effect and greenhouse gases can affect global temperatures? A. The more greenhouse gases that are in the atmosphere, the more heat will be trapped, thereby increasing global temperatures. B. The more greenhouse gases that are in the atmosphere...
*February 17, 2015*

**math**

what is 3 thousandths less than 7.995
*February 2, 2015*

**Physics**

You (m=75.0 kg) are floating outside your space station, and- oh no- a siren sounds, and the doors start to close! At the instant the siren sounds, you are exactly 10.0 m from the station doors and floating away from the space station at a speed of 1.00 m/s. The doors will ...
*January 27, 2015*

**6th grade math**

fykdks
*January 23, 2015*

**Maths Mechanics**

A plane flies due north at 300km/h but a crosswind blows north-west at 40km/h. Find the resultant velocity of the plane. Once I have drawn I diagram it is often okay, but it is the initial steps that I struggle with.
*January 12, 2015*

**Math**

Write an expression for the amount mia pays for gas
*January 6, 2015*

**Science**

thanks
*January 6, 2015*

**Science**

How would a scientist determine the absolute age of a fossil?
*January 6, 2015*

**algebra**

(r)17*4(t)=m
*December 16, 2014*

**Chemistry**

Given a 1.00 M solution of NaOH, describe how you would prepare 500 mL of 0.05 M NaOH solution. You have a 500 mL volumetric flask and a graduated cylinder. I have been trying to figure this question out for over an hour now. I cant seem to place the given numbers into any ...
*November 20, 2014*

**Math - Word problem**

He earned $22.50 working on Saturday. Working 8am-2pm how much did he earn?
*November 9, 2014*

**geography**

How do i do geogrsphy bullseye co-ordinates homework
*October 6, 2014*

**Inverse variation**

-6(8k+4) = 21 + 3k
*October 2, 2014*

**algebra**

What is the answer for 4 (1-3n)-14=4 (2n+3)-9n
*September 29, 2014*

**Economics**

What happens to the cash flow statement for a company operating on a calendar year when a sale is made in December but the firm isn’t paid until the following January?
*September 28, 2014*

**chemistry**

22 54
*September 27, 2014*

**Business**

What happens to companies with high operating leverage when the market declines? What happens when the market expands?
*September 27, 2014*

**Business**

What happens to the cash flow statement for a company operating on a calendar year when a sale is made in December but the firm isn’t paid until the following January?
*September 27, 2014*

**Finance**

What happens to the cash flow statement for a company operating on a calendar year when a sale is made in December but the firm isn’t paid until the following January?
*September 27, 2014*

**Finance**

1. What happens to companies with high operating leverage when the market declines? What happens when the market expands?
*September 27, 2014*

**physics**

You drop a rock from rest out of a window on the top floor of a building, 50.0 m above the ground. When the rock has fallen 3.80 m, your friend throws a second rock straight down from the same window. You notice that both rocks reach the ground at the exact same time. What was...
*September 17, 2014*

**Maths**

What point is the apex of a bridge?
*September 15, 2014*

**Physics - Grade 10**

Grant stands 3 meters from the check out at the grocery store holding a 20N bag of potatoes for 10 minutes. How much work does he perform?
*September 14, 2014*

**Grammar**

Some shy people send unsigned cards
*September 3, 2014*

**statistics**

DO I NEED TO USE 2-TAILED OR 2-TAILED RESULTS? WHY? A researcher believed that 2 hours per week of intensive exercise would result in significant weight loss after 12 weeks on the schedule. Accordingly, he weighed a group of 50 subjects before and after the 12 week exercise ...
*August 3, 2014*

**statistics**

1. A class of 10 students all received a 90 on the final exam. What is the standard deviation?_________
*August 3, 2014*

**geometry**

Use the information below to find the missing measure such that . AB = 35, DE = 14, DF = 22, , AC = ?
*June 25, 2014*

**Science**

What form of pollution, if any, does each energy source cause? How does the economy influence energy source choices? How does location influence energy source choices?
*June 13, 2014*

**Math**

thanks!
*June 13, 2014*

**Math**

oh oh.....
*June 13, 2014*

**Math**

WHY?
*June 13, 2014*

**Math**

Evaluate the following expressions: a. 11^0 b. 11^2 / 11^2 c. are the answers to parts a and b the same? Explain why or why not?
*June 13, 2014*

**Science**

Thank you so much !! Now I understand! Thanks guys!
*June 5, 2014*

**Science 1 More! Help**

Identify any challenging conditions that you may encounter on your mission; this may include near vacuum conditions, extreme temperatures, and microgravity. Explain how you will overcome these challenges with the design of your spacecraft. I don't understand what does this...
*June 5, 2014*

**Science**

OK, Now I understand. thanks Ms. Sue & Damon for the help!
*June 5, 2014*