# Posts by lance

Total # Posts: 239

**Calculus- Related rates**

A spherical balloon is inflated at the rate of 1 cm^3 per minuter. At the instant when the radius r=1.5, (a.) how fast is the radius increasing? (b.) how fast is the surface area increasing?

*March 1, 2017*

**Calculus**

The length l of a rectangle is decreasing at the rate of 3cm/sec, while its width w is increasing at the rate of 3cm/sec. Find the rates of change of (1.) the area, (2.) the perimeter, (3.) the length of one diagonal at the instant when l=15 and w=6.

*February 25, 2017*

**Physics**

A glacier advances at 7 × 10−6 cm/s. How far will it move in 3.7 y? Answer in units of cm. I have calculated that there are 31,449,600 seconds in a year. I multiplied 31,449,600 by 7 × 10−6 and got 2201.472. Then I multiplied that by 3.7 and got 8145....

*October 4, 2016*

**Math**

(8*-x)(8*-6)

*October 4, 2016*

**Chemistry**

Sodium + Sulfuric Acid and Phosphoric Acid + Magnesium Hydroxide a.write the formula b. supply the product c.type of reaction d. balancing

*September 11, 2016*

**Math**

Let f(a,b) = 2a - 3b^2 + 7. If f(b,3) = 90, then what is b? Thank you for helping!

*April 7, 2016*

**Math**

If f(x)=5x-12, find a value for x so that f^-1(x)=f(x+1). Thank you so much

*April 7, 2016*

**Math**

If 1 < x < 9/8, which is bigger, ∛3x or √2x.

*March 21, 2016*

**Math haha**

Simplify: ( 7/2+5/6 )^2 - ( 7/2-5/6 )^2

*March 20, 2016*

**Math**

If 1 > x > 9/8, which is bigger, ∛3x or √2x.

*March 20, 2016*

**math**

Without doing the computation explain why or why not19.7 is a reasonable value for the expression 122.14÷6.2.

*September 1, 2015*

**MATH**

I am trying to find the rule for a function table with input 2, output 30; input 3, output 48; input 4, output 66.

*March 18, 2015*

**physics**

A 78 kg bag of mortar mix is sitting in the back of a truck rounding a traffic circle of radius 27 m at a speed of 21 km/h. Using the truck's frame of reference, find the force of contact between the bag and the side of the truck. Assume that the floor at the back of the ...

*October 11, 2014*

**Algebra, Logirithms**

Find the inverse of the function: f(x) = e^(4x+2) - 10

*May 5, 2014*

**Math**

Help Please! The LCM of two numbers is 60. The GCF of the numbers is 5. One number is 5 more than the other. The numbers are________ and __________ Please help clueless in Massachusetts

*February 25, 2014*

**math**

Soorry, I forgot to add this part: In how many weeks will Brandon’s car have 12,000 miles on it? Justify your steps by stating the identity or property used.

*November 13, 2013*

**math**

Brandon and Jacob buy used cars at the same time. Brandon buys a car with 10,000 miles on it. He drives an average of 100 miles a week. The equation that follows can be used to determine how many miles, m, will be on the car after any number of weeks of driving, w: m = 100w + ...

*November 13, 2013*

**Noun and Adjective Clauses**

Amanda bought a prom dress which she considered the most beautiful dress ever made. Adjective clause:Amanda bought a prom dress Word(s) modified:dress

*October 22, 2013*

**physics**

Find the field produced by a uniformly charged sheet carrying 93pC/cm2 .

*September 3, 2013*

**Statistics**

The inside diameter of the automobile wheel bearing sets at a factory is expected to be normally distributed with a mean of 1.30inches and a standard deviation of 0.04 inches. What is the probability that a randomly selected wheel bearing will have an inside diameter of, a) ...

*July 25, 2013*

**Physics**

Steps for drawing an acceleration time graph from a velocity time graph and vice versa?l Please give me proper steps

*July 10, 2013*

**physics**

7CM

*May 2, 2013*

**CHEMISTRY**

tell me

*March 21, 2013*

**CHEMISTRY**

sorry, i couldn't answer because i was busy. what was your question again?

*March 21, 2013*

**math**

H isnt the vertex angle? So would the answer to the question be C?

*February 26, 2013*

**math**

Triangle GHI is an isosceles triangle. H is the vertex. If the measure of H is 73 degrees what is the measure of G? A.73 B.17 C.34 D.104 A)73 degrees?

*February 26, 2013*

**Math**

Triangle GHI is an isosceles triangle. H is the vertex. If the measure of H is 73 degrees what is the measure of G? A.73 B.17 C.34 D.104 A)73 degrees?

*February 26, 2013*

**Math**

So does that mean C is the base angle and the correct answer is A?

*February 26, 2013*

**Math**

Angle B is the vertex.

*February 26, 2013*

**Math**

Triangle ABC is an isosceles triangle If the measure of B is 37 degrees what is the measure of C? A.37 B.53 C.106 D.143 I think it's A or C?

*February 26, 2013*

**Science**

Why do you think people wrestle alligators?

*February 18, 2013*

**English**

To assert means to A.put into words forcefully b.pass along stories quickly C.compliment someone often D.explain something completely A?

*February 15, 2013*

**English**

An incident is a single A. event B.person C.memory D.discussion A?

*February 15, 2013*

**Analytic Geometry**

A parabola has a directrix y=-3, axis =4 and latus rectum equal to 2. find its equation. Please help me its for my homework

*February 11, 2013*

**3rd grade math**

.8 .78

*January 29, 2013*

**3rd grade math**

.76 .7

*January 29, 2013*

**Analytic Geometry**

Find the equation of a circle passing through and tangent to the line x-3y+8=0

*January 25, 2013*

**Analytic Geometry**

Give the equation of the circle tangent to both axes of radius 5 and in the 1st quadrant. Can you help me solve this?

*January 21, 2013*

**Analytic Geometry**

What are the equations of the circles tangent to the x-axis, of radius 4 and whose center is at (-2,y) Please help, how do I solve this problem?

*January 21, 2013*

**Analytic Geometry**

A point is equidistant from (-2,4) and (3,5). It is also equidistant from (-2,-3) and (6,-1). Find the point Please I need Help with this

*January 13, 2013*

**Analytic Geometry**

A point is equidistant from (-2,4) and (3,5). It is also equidistant from (-2,-3) and (6,-1). Find the point Please I need Help with this

*January 13, 2013*

**Geometry**

What is the equation of a line through (-2,5) and whose segment intercepted between the axes in the 2nd quadrant is 7sqrt2? Please help me solve this

*January 7, 2013*

**Math,Geometry**

What are the equations of the lines through (-5,-3) and passing at distance 2sqrt5 from (5,7) Please I really need your help. I do not know how to do this problem.

*January 7, 2013*

**Math,Geometry**

What are the equations of the lines through (-5,-3) and passing at distance 2sqrt5 from (5,7) Please I really need your help. I do not know how to do this problem.

*January 7, 2013*

**geometry**

What are the equations of the lines through (-5, -3) and passing at distance 2sqrt5 from (5,7)? This problem is confusing? How do I solve this? Please I need your Help

*January 7, 2013*

**English**

What's the difference between possessive nouns and possessive pronouns? Are they the same

*December 18, 2012*

**Grading**

How do you find out what your grade is on a paper? For example if there is 70 questions and you miss 10 how do you find out what your grade is? Do you subtract 70 and 10 and when you get your answer you divide it by 100?

*December 18, 2012*

**Math**

A highway construction warning sign blinks on and off. In all, the sign is on for 0.88 of each minuite. For how many seconds is the sign on in 5 minutes?

*December 11, 2012*

**Science**

Malleability-easily broken Ductile-easily wired

*December 8, 2012*

**Science**

What is ductile and malleability?

*December 8, 2012*

**Science**

Define heat in science terms

*December 8, 2012*

**Science**

You may have heard "Nothing is Free" explain why this is true

*December 1, 2012*

**Math perimeter**

How many inches of matting are needed to frame an 8in by 11 in print? 38?

*November 7, 2012*

**math**

How many inches of matting are needed to frame an 8 in by 11 in print 38in?

*November 7, 2012*

**Math**

When finding the perimeter you have to add the sides not multiply right? For example a rectangle is 14 width and 29 height would the perimeter be 86in?

*November 7, 2012*

**physics**

You see an optical illusion of an ever-upward spiral staircase. The climber trudges up and up and never gets anywhere, going in circles instead. Suppose the staircase is provided with a narrow ramp, allowing the tired stair-climber to push a wheelbarrow up the stairs. The ...

*November 4, 2012*

**Maths**

Three boys shared some cards. Peter had twice as many cards as Farid. The ratio of the number of cards Peter had to the number of cards Kiran had was 6:5. Farid gave 2/3 of his cards to Peter and the rest to Kiran. How many cards did Kiran have at first if he received 10 cards...

*October 24, 2012*

**Finite Math- help wanted. Super hard!**

In a past presidential election, it was estimated that the probability that the Republican candidate would be elected was 2/3, and therefore the probability that the Democratic candidate would be elected was 1/3 (the two Independent candidates were given no chance of being ...

*October 16, 2012*

**math**

An airplane flying against the wind travels 100 miles in the same amount of time it would take the same plane to travel 140 miles with the wind. If the wind speed is a constant 40 miles per hour, how fast would the plane travel in still air?

*October 10, 2012*

**Science**

We have to build a catapult that can launch a marshmallow at least 10 feet. Can anyone give me any ideas?

*October 9, 2012*

**Order of Operations**

Left to right I mean

*September 27, 2012*

**Order of Operations**

The order for it is P E M D A S Parenthesis Exponents Multiplication or Division first going left and right than Addition or subtraction depending on whats first going left from right I got 11 now.

*September 27, 2012*

**Order of Operations**

7/6+(10-4)x5 35?

*September 27, 2012*

**Order of Operations**

As you simplify each expression below, which one requires finding the quotient of 80 divided by 2 A.4+6x8/2 B.2x5x8/2 C.(2+5)x8/2 D.4+(6x8)/2 B?

*September 26, 2012*

**math**

can you explain how

*September 26, 2012*

**math**

A bag of apples weighs 22.3 ounces and costs $1.80. What is a good estimate of the price per ounce of the bag of apples? A.$1 B.10 cents C.$4 D.40 cents I think its either B or D. I divided

*September 26, 2012*

**Math**

There isnt any 8 dollars

*September 26, 2012*

**Math**

A bag of apples weigh 22.3 ounces and costs $1.80 What is a good estimate of the price per ounce of the bag of apples A.$1 B.10 cents C.$4 D.40 cents D?

*September 26, 2012*

**Order of Operations**

85/5+14x(12-8) 82?

*September 26, 2012*

**Order of operatios**

7-2+3/3x5

*September 26, 2012*

**Science**

Batteries change ____ energy into _____ energy Chemical and electric Converting the suns energy into electricity does not work if it is ____ time or there is ___ weather night and bad? The suns energy can be turned into electrical energy or ___ energy solar? A toaster ...

*September 19, 2012*

**Math**

greatest common factor of 16 24 and 30 A.2 B.6 C.8 D.12 A?

*September 18, 2012*

**Math**

Dadid has 36 yellow marbles, 48 green marbles, and 24 orange marbles. What is the greatest common factor that david can use to divide the marbles into equal groups A.4 B.6 C.12 D.24 C?

*September 18, 2012*

**Math**

Ned has 24 caramal candies, 18 mints,and 12 chocolate bars. he wants to divide the candies into groups so that each group has the same number of pieces of each ind of candy. What is the largest number of groups that ned can make A.2 B.4 C.6 D.12 B?

*September 18, 2012*

**mth**

1.What is he greates common factor of 36 and 24 A.9 B.12 C.18 D.108 B? Erin needs to find the greatest commo factor of 24 and 18 to help her find it answer each part below. A. list the factor pairs of 24 1x24 2x12 3x8 4x6 B.Factor pairs for 18 1x18 2x9 3x6 C.Common factors of ...

*September 18, 2012*

**mth**

What is the greatest common factors of 9 and 27 A.3 B.6 C.9 D.18 C?

*September 18, 2012*

**Math**

Use estimation to determine which expression has the least value A. 5 3/4 + 2 1/4 - 2 1/8= 8? B. 6 1/4 + 1 - 1 1/4= 6? C.8 1/3 - 1 1/2 + 1 1/3= 7? D? 12 2/5 - 5 +2 4/5= 10? B has least value

*September 17, 2012*

**Math**

what is 1 2/3 times 3

*September 17, 2012*

**Math**

Jared and 5 friends wanted to make mac and cheese for lunch. they decided to use 3 boxes and each box needs 1` 2/3 cups of milk. the milk carton has 4 cups of milk left in it. do they have enough milk to make their lunch? Prove answer I put Yes because if 1 box needs 1 2/3 ...

*September 17, 2012*

**Math**

School is out at 3:50 pm. Band practice is 2 1/2 hrs dinner takes 3/4 of an hour homework takes 1 1/4 hrs. You have to go to bed at 10. About how much time is left to play video games? A. 3 1/2 B.5 hours C.1 hour D. 2 hours D?

*September 17, 2012*

**Math**

How did you come up with the numbers? Division?

*September 17, 2012*

**Math**

Pounds. Sorry

*September 17, 2012*

**Math**

Elana bought three bags of dried fruit that weighed 1 7/10 3 1/4 and 2 3/5 about how many fruit did she buy 6 7 10 8 6?

*September 17, 2012*

**Math**

Where do you get 8

*September 17, 2012*

**Math**

Each loaf was sliced to 8 equal parts

*September 17, 2012*

**Math**

Maria served 4 1/7 loaves of banana bread and 4 2/3 loaves of cranberry bread. About how many slices of bread did she serve A.80 B.72 C.64 D.32

*September 17, 2012*

**Math**

I got 1 how is it 0

*September 17, 2012*

**Math**

Round each number to the nearest whole number 3/14

*September 17, 2012*

**science**

why barium comnpounds are toxic

*September 16, 2012*

**Math**

2.30?

*September 15, 2012*

**Math**

2.36 rounded to the tenths place

*September 15, 2012*

**Definition**

What does TRAC stand for

*August 31, 2012*

**Math**

Write a story for the following multiplication problem : 16x5 Derrick gets $5 for every hour he works at the store. He works for 16 hours each day. How much money does he get everyday? Is that a good problem? Write a story for the following multiplication problem : 144x78 I ...

*August 29, 2012*

**College Chemistry**

Got it. thanks for the help!

*May 4, 2012*

**College Chemistry**

A gas containing carbon and hydrogen analyzed as 85.6 % carbon and 14.4 % hydrogen. A 42.1 g sample of a gas occupied a volume of 7490 mL with a pressure of 2280.0 torr at 92 °C. Enter the molecular formula of the compound. Thanks.

*May 4, 2012*

**College chemistry**

Need help balancing chemical equation. Complete and balance the chemical equation. Be sure to include the states of the reactants and products. C3H8(g)+O2(g) →

*May 4, 2012*