# Posts by marc

Total # Posts: 179

**computer programming**

Design the logic for a program that allows a user to enter 10 numbers, then displays each and its difference from the numeric average of the numbers

**computer programming**

Design the pseudocode for a program that allows a user to enter 10 numbers, then displays them in the reverse order of their entry

**algebra**

A man flies a small airplane from Fargo to Bismarck, North Dakota --- a distance of 180 miles. Because he is flying into a head wind, the trip takes him 2 hours. On the way back, the wind is still blowing at the same speed, so the return trip takes only 1 hours. What is the ...

**into to algebra**

You need a 45% alcohol solution. On hand, you have a 150 mL of a 15% alcohol mixture. You also have 70% alcohol mixture. How much of the 70% mixture will you need to add to obtain the desired solution?

**Program Design and Development **

Design a Visual Logic flowchart for a program that prompts the user to enter ten numbers one at a time. After the user has entered all ten number the program will then print out the total of those ten number and quit? In Visual Logic use console I/O?

**Program Design and Development **

Design the pseudocode for a program that outputs numbers in reverse order from 10 down to 1 using a loop?

**Calculus **

Knowing that Pi/2 < x < Pi and that 0<y< Pi/2 that sinx = 1/5 and that cos y = 1/8, find sin (x+y), sin (x-y), cos (x+y) and cos (x-y). Explain.

**Calculus **

Find two non-intersecting intervals where f(x) +12x^4 + 50x^3 + 80x^2-100 has at least one root. Justify your answer.

**Math**

Mrs. Beck paid a total of $34 for 4 identical bowls and 2 identical plates. A bowl cost $4 more than a plate. How much did she pay for each bowl?

**Ap physics**

Determine the mass of the earth from the known period and the distance of the moon

**English**

please someone post the answers please i need this

**English**

ARE THEY RIGHT??

**English**

Are they right????? what are the right answers

**Math**

Suppose you have a coin that lands on Heads with probability 0.6 There are three coin flips defined as X. Heads count 1 and tails count 0 – e.g., if three heads then X= 3; if a head and two tails then X = 1; if three tails the X = 0. What is the expected value of X? I'...

**pre-calculus**

A plane flies at a speed of 150mph at an angle of 10 degrees, after 6 seconds, the plane keeps the same speed but changes to an angle 18 degrees. How long in minutes would it take the plane to travel to a cruising altitude of 30,000 feet?

**Scienc**

The dissolution of ammonium nitrate in water changes the temperature of water from 21C to - 1C(ice). If the molar enthalpy of ammonium nitrate is 25.7kj/mol. Determine the mass of ammonium nitrate that was dissolved

**math**

what is the circumference of a circle with a diameter of 50 mm

**Math**

d=21* sry

**Math**

(42+10)+(s+10)+(d+10)=100 72+s+d=100 s+d=28 d=3s so you can plug it in s+3s=28 4s=28 s=7 d=22

**Or is this the correct way??**

f(3) = 2(9) - 6(3) = 0 f(3+h) = 2(3+h)^2 - 6(3+h) = 2(9 + 6h + h^2 - 18 - 6h = 2h^2 + 6h slope = lim (f(3+h) - f(3) )/h , as h--->0 = lim(2h^2 + 6h - 0)/h = lim h(2h + 6)/h = lim 2h + 6 , as h ---> 0 = 6

**Calculus (Im I Doing This Right???? Im Unsure)**

From first principles (ie using the tangent slope method), find the slope of the following curves at the given value of x. f(x)=2x^2−6x at x = 3 f(x)=2x^2-6x f(x+h)= 2(x+h)^2-6(x+h) =2x^2+4xh+2h^2-6x-6h lim h-->0 f(x+h)-f(x)/h =2x^2+4xh+2h^2-6x-6h - (2x^2-6x) =4xh+2h^...

**Calculus (Im I Doing This Right???? Im Unsure)**

Are you sure? Someone told me I'm doing this wrong

**Calculus (Im I Doing This Right???? Im Unsure)**

From first principles (ie using the tangent slope method), find the slope of the following curves at the given value of x. f(x)=2x^2−6x at x = 3 f(x)=2x^2-6x f(x+h)= 2(x+h)^2-6(x+h) =2x^2+4xh+2h^2-6x-6h lim h-->0 f(x+h)-f(x)/h =2x^2+4xh+2h^2-6x-6h - (2x^2-6x) =4xh+2h^...

**Calculus**

From first principles (ie using the tangent slope method), find the slope of the following curves at the given value of x. f(x)=2x^2− 6x at x = 3

**Calculus Answer Confirming Not Sure Im Right Help?**

would the lim approaches 64 is it 1/48 or is it when the lim approaches 4 is 1/48

**Calculus Answer Confirming Not Sure Im Right Help?**

Ok thanks for the help,it helped a lot!!!

**Calculus Answer Confirming Not Sure Im Right Help?**

* 1/64^2+4(64)+16

**Calculus Answer Confirming Not Sure Im Right Help?**

Evaluate the lim a. lim x--> 64 (cube root x-4/x-64) (∛x-4)/(x-64) -> 0/0 so then let cube root x = u u-4/u^3-64 u-4/u^3-64 = u-4/u-4(u^2+4u+16) the u-4 cancel each other out leaving lim x->64 = 1/u^2+4u+16 1/64^2+4(64)=16 oddly i find the number to large am i ...

**Confused**

Shouldn't i let cube root of x equal u and then factor it out like this u-4/u^3-64

**Calculus Help Stuck Part 3?**

Sorry meant for title to be part 3 not part 2

**Calculus Help Stuck Part 2?**

Evaluate the lim a. lim x--> 64 (cube root x-4/x-64)

**Calculus Help Stuck Part 2?**

so basically to get the negative 1 i just divide -4/4 correct?

**Calculus Help Stuck Part 2?**

Ok thanks that helped a lot!

**Calculus Help Stuck Part 2?**

b.Determine the lim x-->4 (x^2+x-20/8-2x) What Im stuck on is this f(4)= 4^2+4-20 / 8-2(4) f(4)= 0/0 x^2+x-20/8-2x = (x-4)(x+5)/-2(x-4) What do I do next I'm so confused ik i would eliminate the x-4 from numerator and denominator but what would i do with the -2 that ...

**Calculus**

Reiny, want to help on my 2nd question I did the some of the work but I'm stuck on the last step and need guidance

**Calculus**

Determine the following limits if it exists. a. lim x-->5 (4x/x-5)

**Calculus**

Determine the following limits if it exists. a. lim x-->5 (4x/x-5)

**social studies**

The Supreme Court decision in Gray v. Sanders (1963) was instrumental in A) establishing the "one person, one vote" standard for legislative districting. B) overturning the long-standing "separate but equal" standard in education. C) legalizing a woman'...

**Math**

Arrange these numbers from least to greatest: 2 over 5 comma text end text − 3 over 7 comma text end text 2 over 3. A. 2 over 5 comma text end text − 3 over 7 comma text end text 2 over 3 B. − 3 over 7 comma text end text 2 over 5 comma text end text...

**English**

Fred was talking to his sister one day. He said,-- "Alice, what makes people say, 'Don't give up the ship'?" Alice said, "I don't know. That's what the teacher said to me yesterday when I thought that I could not get my lesson." "...

**English**

How does the author arrange this passage? A) He uses dialogue in the first half to express the confusion over the phrase "Don't give up the ship." He uses a rhyming poem in the second half to explain the phrase's source. B) He uses dialogue in the first half...

**English**

While Sara was traveling in England; she met an interesting old man. . Choose the answer that is the most effective substitute for the underlined part of the sentence. If no substitute is necessary, choose ‘Leave as is.’ A) in England. She met B) in England, she met...

**English**

After the basketball game the students had a dance at the school. . How should the sentence be correctly punctuated? A) Add a comma after game. B) Add a comma after dance. Reactivate C) Change the period to a question mark. Reactivate D) Add an apostrophe before the last s in...

**English**

Choose the sentence that contains no comma errors. A) The book, that I borrowed from Elizabeth last week was excellent. B) About four thousand years ago, Stonehenge, was a center of worship. C) Alice Jones lived at 15, Cedar Street NE, Colorado Springs Colorado, 92158. D) ...

**Math**

Jessica earns $53.35 in 5.5 hours. How much does Jessica earn in 1 hour?

**Math**

1587 x 8000 = 12696000

**Science**

D.

**Science**

Which solution will best allow the movers to achieve their goal? A) Change the width of the ramp from 4 meters to 3 meters. B) Change the length of the ramp from 4 meters to 5 meters. C) Change the height of the ramp from 3 meters to 4 meters. D) Change the length of the ramp...

**math**

.10 so it would be 226.10

**math**

what is 226.08 rounded to the nearest tenth? I'm stuck I believe it would be 226.9

**math**

Um B.

**math**

Two functions, A and B, are described as follows: Function A y = 9x + 4 Function B The rate of change is 3 and the y-intercept is 4. How much more is the rate of change of function A than the rate of change of function B? 2 3 6 9 I believe the answer is either C or B but I am ...

**Language Arts**

Excerpt from: Norse Mythology Part D Kate McConnaughey Then Loki, the spirit of evil, will break loose from the fetters with which the gods have bound him. (31) The frost giants join him. They will try to make a secret attack on the gods. But Heimdall, the sentry of heaven, ...

**Language Arts**

When He-Ping says that he wouldn't miss it for the world, he means that A) he is not sure. Eliminate B) he really wants to go. C) he thinks his mom should know. D) he does not know if he is allowed. I believe it is B.

**Language Arts**

I believe it is A

**Language Arts**

Which words should be deleted to remove redundancy? At first, my initial reaction was to cancel my subscription to the monthly magazine because the customer service representative was so rude to me. A) At first, B) monthly magazine C) my initial reaction D) service ...

**math**

i cant post a picture?

**math**

The lines a and b intersect at point D. What is the value of z? z = Can you please help em solve im really stuck and confused?

**Math**

i did the test and the math the answer is 1.5

**Calculus/Math**

lim ((1-2x)/(√1+x^2)-1) x→∞ Find the value.

**algebra**

Shoe O Rama is having a 20 % off sale this friday. Which equation below shows how to find the sale price, s, as a function of the original price, p?

**math**

A can of oil is 8 inches high and 8 inches in diameter. What is the approximate volume of the can?

**Algebra**

The difference of two whole numbers is 27.The greater number is 3 less than twice the smaller.What are the numbers?

**math**

Oops answer is 9 gallons

**math**

11.8

**Math**

Please help me and show an understanding please, so I see how to figure them out. Lee deposited $28,000 in an interest-bearing checking account that earns 3.5% interest compounded daily. Find the amount after 68 days. a.$183.16 b.$28,180.46 c.$28,183.16 d.$180.46 On April 10th...

**algebra**

on an expressway, the recommended safe distance between cars in feet is given by 0.019v^2+v+14, where v is the speed of the car in miles per hour. Find the safe distance when the following takes place( round answer to three decimal places). v=35 mph ____ft.? and v=55mph ...

**algebra**

The vendor of a coffee cart mixes coffee beans that cost $8 per pound with coffee beans that cost $4 per pound. How many pounds of each sould be used to make a 60-pound blend that sells for $5.25 per pound? $8 coffee __________ $4 coffee __________

**algebra**

on an expressway, the recommended safe distance between cars in feet is given by 0.019v^2+v+14, where v is the speed of the car in miles per hour. Find the safe distance when the following takes place( round answer to three decimal places). v=35 mph ____ft.? and v=55mph _____ft.?

**geometry**

v=1/3TTr^2h;

**algebra**

A motorboat left a harbor and traveled to an island at an average rate of 11 knots. The average speed on the return trip was 10 knots. If the total trip took 4.2 hours, how far is the harbor from the island

**MATH**

v=1/3ttr^2h; h(geometry)

**MATH**

How many liters of water should be evaporated from 110 liters of a 12% saline solution so that the solution that remains is a 20% saline solution

**math**

if a pie is cut into sixths how many pieces would there be ?

**statistics**

The trends in international mathematic and science study (TIMSS) in 2007 examined eighth grade proficiency in math and science. The mean mathematics scale score for the sample of eighth grade students in the US was 508.5 with a standard error of 2.83. Construct a 95% ...

**Algebra**

Solve h=2f/m+1

**english**

two independent clauses

**pharmacy tech**

to find out if a drug causes nausea you would look in this section of the drug monograph

**math**

Three men, A, B and C agree to share the expense of a fishing expedition in the ratio 2:3:4. A pays $25 for the hire of the boat, B pays $70 for the meal and C pays $49 for traveling expenses. How much must A and C pay B to settle their agreed shares?

**math**

Two numbers are such that their difference, their sum, and their product are in the ratio 1 : 4 : 15. What are the two numbers?

**geometry**

/?gfe_rd=cr&ei=ybIvU7KZAcaE8QfLzYDoDQ

**math**

let time taken until they meet be t hrs distance covered by first train = 115t miles distance covered by 2nd train = 105t miles 115t+ 105t = 1200 220t = 1200 t = 5.454545.. hrs or 5hrs and .4545..*60 min = 5hrs and appr 27 minutes

**PHYSICS**

An electron is initially at rest in, but not on the axis of, a solenoid that is carrying a steady current I directed as shown in the cross section below. The electron is initially at rest on the -x axis. The current in the solenoid is suddenly increaed to 2I. In what direction...

**PHYSICS**

its A

**Physics**

0.001 V

**math**

calculate the following, leaving your answer either as a fraction (lowest) or in decimal form Divide: 3/4 ÷ 3 =

**math**

calculate the following, leaving your answer either as a fraction (lowest) or in decimal form Multiply: (2/3) (3/5) =

**math**

calculate the following, leaving your answer either as a fraction (lowest) or in decimal form Subtract: 3/4 - 3/8 =

**math**

calculate the following, leaving your answer either as a fraction (lowest) or in decimal form Add: 3/8 + 1/2 + 3/4+=

**Mechanics:Statics**

Two 10 kg spheres are placed 500mm apart. Express the gravitational attraction acting on one of the spheres as a percentage to its weight on earth.

**Mechanics:Statics**

A man weighs 900N on the surface of the earth. Compare his weight in an airplane flying at an elevation of 9000m. Note that the radius of Earth is 6378km.

**8th grade science**

Good hypothesis for does the human tongue have definite areas for certain tastes

**science**

Does the human tongue have definite areas for certain tastes

**math**

First estimate,then multiply to get the exact answer. 6 2/3 X 3 4/11 X 5

**Physics**

An 80 kg man climbs a 50 m-high hill in 20 minutes. What is the average power in watts he expends climbing the hill?

**Physics**

The weight of a rock on the moon is 0.85 N. If acceleration due to gravity on the moon is 1.7 m/s2, what will be its weight on the earth

**science**

make a graphic organizer to show ways how ways to cause physical changes to a piece of paper

**math**

there are 45 children in a class.if there are 3 more girls than boys,how many are girls?

**math**

i am a three digit number.if you subtract 419 from me the remainder is 126.what number am i?

**math**

there are 45 children in a class.if there are 3 more girls than boys,how many are girls?