# Posts by willow

Total # Posts: 42

**Math**

Use the given values to write an equation relati g x,y and z given that z varies jointly with x and y X=3 Y=2 Z=2.4

**Algebra**

Evaluate the function. h(a) = 2^a+1; Find h(a - 4)

**Algebra**

for the last line, don't you mean -3n^2 and not just 3

**Algebra**

Evaluate the function. g(n) = -3n^2 + 2; Find g(n+3)

**Algebra**

h(n) = -3 • 4^2n+1; Find h(2n)

**Math**

Evaluate the function. h(n) = -3 • 4^2n+1; Find h(2n)

**Algebra**

thank you

**Algebra**

I can't find it Can you post the link

**Algebra**

A plane traveled 400 miles to Rome and back. The trip there was with the wind. It took 5 hours. The trip back was into the wind. The trip back took 10 hours. - Find the speed of the plane in still air and the speed of the wind.

**Algebra**

A plane traveled 400 miles to Rome and back. The trip there was with the wind. It took 5 hours. The trip back was into the wind. The trip back took 10 hours. - Find the speed of the plane in still air and the speed of the wind.

**Algebra**

2+5?

**Algebra**

When you reverse the digits in a certain two digit number you increase its value by 27. Find the number if the sum of its digits is 7.

**Math**

Okay so 2 would be A and D? Because it tells you to pick 2 answers

**Math**

1. Which polygon will always be irregular? A. triangle B. trapezoid** C. square D. hexagon 2. Which statements are always true about regular polygons? (Choose 2) A. All sides are congruent B. Pairs of sides are parallel** C. All angles are congruent** D. All angles measure 90 ...

**Area and Perimeter Shepes**

a rectangle has a perimeter of 32cm. one side measures 5cm. calculate the area of the rectangle.show your working.

**english**

Foggy Skyies, thanks! I got 4/4

**Physics**

A 3.5 × 103 kg car accelerates from rest at the top of a driveway that is sloped at an angle of 16.9◦ with the horizontal. An average frictional force of 4.1×103 N impedes the car’s motion so that the car’s speed at the bottom of the driveway is 4.2...

**Physics**

A 3.5 × 103 kg car accelerates from rest at the top of a driveway that is sloped at an angle of 16.9◦ with the horizontal. An average frictional force of 4.1×103 N impedes the car’s motion so that the car’s speed at the bottom of the driveway is 4.2...

**Physics**

A 3.5 × 103 kg car accelerates from rest at the top of a driveway that is sloped at an angle of 16.9◦ with the horizontal. An average frictional force of 4.1×103 N impedes the car’s motion so that the car’s speed at the bottom of the driveway is 4.2...

**Math**

There are 12 girls and 9 boys in Mrs. Johnson's classroom. She said that if she randomly selects one student from her classroom the probability that it is a boy is 3/4. Which mistake did Mrs. Johnson make? A. She divided the number of girls by the total number of students...

**Physics**

Two charges are located along the x-axis. One has a charge of 6.3 μC, and the second has a charge of −3.4 μC. If the electrical potential energy associated with the pair of charges is −0.043 J,what is the distance between the charges? The value of the ...

**math, algebra**

Thanks!

**math, algebra**

Tina is trying to drop a water balloon from her balcony onto a rectangular raft in the pool below. The pool is 25 feet long and 15 feet wide. The raft is 6 feet long and 2 feet wide. What is the probability that Tina will hit the raft with the water balloon?

**math**

write a situation thar can be represtented by the algebraic expression $3.50t.

**Finite Math**

Assume that 3 digits are selected at random from the set {1,3,5,6,7,9} and are arranged in random order. What is the probability that the resulting 3-digit number is less than 700? I know the sample space is P(6,3) but that is all I know. Help!

**College Math**

Sorry, I meant to say 10 cans NOT 7.

**College Math**

A cooler contains 7 cans of cola: 6 regular colas and 4 diet colas. If 3 cans of cola are selected at random, what is the probability that 2 cans of regular cola and 1 can of diet cola are selected?

**math**

Sometimes it helps to right separate equations for each person's age. a + 5 = Tisha 2a + 3 = Alex 2tisha = Sara I guess you could have that system of equations be your answer, just pick a variable for each person's name. I'm not exactly sure how you would combine ...

**Math**

Yes, you are correct! :) Post another question if you need any more help. :)

**Read this first! I found the formula for circumference.**

The circumference formula is: c = pi times diameter OR c = 2piradius Sorry, I don't know how to make a pi symbol on the keyboard. :) I couldn't find the area formula... but just place 9.3 in where I said radius. Hope I helped! :)

**math**

I don't remember the equations exactly, but I know there are equations to find that. Just go an a search engine and type in "circumference equation" or "area equation" and you'll find it.

**circles**

Like I said with awl, I found the circumference forumla, which is: c = pi times diameter OR c = 2 times pi times radius I can't find the area formula. :( Just place in 3 where I said "radius." Hope I helped! :)

**reading**

Is there something in particular you don't understand? Or a sentence where you have to underline the adjectives? Then I can help you. P.S: Adjectives are describing words. They usually describe nouns, which are objects. For example: The rabbit was fluffy. Fluffy is the ...

**reading**

Umm... seriously. Tell us what it is, then.

**Algebra**

Oh, I kind of skimmed what you said and didn't notice the x-y=2... I'm sorry! Thanks so much though! :) P.S: Is the correct answer 375 miles away from the station, meaning x=5 and y=3?

**Question**

You see, here's what I did. I changed the "t" in the equation that both of you gave me (75t=125(t-2)) to an x so I could use elimination to solve the problem. That made that equation be 125x - 250 = 75x + 75x = 125 y That's where my problem comes along... it ...

**Algebra**

A train leaves Danville Junction and travels north at a speed of 75 km/h. Two hours later, a second train leaves on a parallel track and travels north at 125 km/h. How far from the station will they meet? I have no idea what the system of equations would be for this problem, ...

**algebra**

Christie makes a $9.25 purchase at the bookstore with a $20.00 bill. The store has not bills and gives her change in quarters and 50-cent pieces. There are 30 coins in all. How many of each kind are there? Are these the correct equations? x + y = 30 .25x + .5y = 10.75 (that&#...

**english**

Well, "which I thought had lost" at the end of the sentence should be "which I thought I had lost." Unless that was a typo, I don't see any other things that need to be corrected.

**Thank you!**

Did you get w = 19 and L = 76? Thanks! :)

**Algebra**

The perimiter of a lot is 190 meters. The width is one-fourth of the length. Find the dimensions. Here's my system of equations: 2w + 2L = 190 1/4L = w What would I do from here? I prefer the elimination method. Would I multiply the second equation by 4? When I did so, it ...

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