Hector

This page lists questions and answers that were posted by visitors named Hector.

Questions

The following questions were asked by visitors named Hector.

Copper metal reacts with concentrated nitric acid according to the following balanced equation: 3Cu(s) + 8HNO3(aq) ¨ 3Cu(NO3)2(s) + 2NO(g) + 4H2O(l) Calculate the mass in grams of the excess reagent remaining after the complete reaction of 4.63 g of Cu w...

Determine whether the following is convergent of divergent. integral(lower limit=0, upper limit=infinity)of sin(x)sin(x^2)dx Thanks

If n is a positive integer, prove that integral[(lnx)^ndx=((-1)^(n))*n!](lower limit=0, upper limit=1) Thanks Again,

Integrate using partial decomposition indefinite integral (1/(x^(4)+1)dx. P.S. 4 is the only exponent. Thanks

Ms Price has three times as many girls as boys in her classroom Ms Lippy has twice as many girls as boys. Ms. Price has 60 students, and Ms Lippy has 135 students. If the classes were combined into one, what would be the ratio of girls to boys?

In a class of 36 students, 13 were absent on Friday. What percent of the class was absent? Is the answer 36 1/9?

Eric deposted $32,000 in a savings account to save for his children's college education. The bank pays 8% tax-deferred interest per year compounded quarterly. How much will his account be worth at the end of 18 years? 32,000(1.02)^72=$113,156.50 Is this c...

If a legislator supported a measure letting factories be built on a river in her home district but then reversed his decision when he worried about pollution being sent downstream, which model of representation would he be following?

At what time should each boat start so all the boarts will cross the finish line at 100 meters at the same time?

Help!!! A rectangle piece of cardboard twice as long as wide is to be made into an open box by cutting 2 in. squares from each corner and bending up the sides. (a) Express the volume V of the box as a function of the width W of the piece of cardboard (b)...

An aqueos solution is 65%(v/v) rubbing alcohol.How many millimeters of water are in a 95-mL sample of this solution?

Once you have developed your product/service, you then need to determine how to make it available to the end user. Using your textbook and the articles from the Databases in the AIU Library, develop a distribution system for the product/service you chose...

collect like terms 3a+2a^2+a-a^2

the de broglie wavelength of an electron with a velocity of 6.00 x 10^6 m/s is ____m. the mass of the electron is 9.11 x 10^-28g.

For an object in equilibrium the sum of the torques acting on it vanishes only if each torque is calculated based on your:

. Compared a car (mass of 2000 kg) moving at 10 miles per hour, how much kinetic energy (in Joules) does that same car have when it moves at 20 miles per hour? At 50 miles per hour? 75 miles per hour?

a green bead of mass 70 g slides along a straight wire. The length of the wire from point "A" to point "B" is 0.700 m, and point "A" is 0.400 m higher than point "B". A constant friction force of magnitude 0.020 0 N acts on the bead. If the bead is releas...

you dump a box of numbered sticks from 1 to 100, what is the probability that I will get a multiple of 5,

A pack of jelly beans contains seven flavors, apricot, fig, grape, coconut, date, banana, and eggplant. How many combinations can you make with the seven flavors mixed or alone?

Carlos has 7 1/2 acres of farmland. He uses 1/3 of the acres to graze animals and 1/5 of the acres to grow vegetables. How many acres does Carlos use for grazing animals of for growing vegetables?

If an arrow is shot upward on Mars with a speed of 54 m/s, its height in meters t seconds later is given by y = 54t − 1.86t2 (i) [1, 2](ii) [1, 1.5] (iii) [1, 1.1] (iv) [1, 1.01] (v) [1, 1.001] (b) Estimate the speed when t = 1.

The radius of a sphere is increasing at a rate of 2 mm/s. How fast is the volume increasing when the diameter is 100 mm? Evaluate your answer numerically.

An upright cylindrical tank with radius 3 m is being filled with water at a rate of 4 m3/min. How fast is the height of the water increasing?

What are the mineral components of Dockweiler beach sand

Evaluate the expression: (6.91 x 10⁻²) - (2.4 x 10⁻³)

what is four hundred eight hundredths as a decimal

Answers

The following answers were posted by visitors named Hector.

Thanks MathMate!

Nick Hoins and Demi Higgins PDA way too much in school!!!

if you use A=Mc^2 solve for A. then use common sense

That's easy 3:18 9:54 6:36 3*6:18 9*6:54 6*6:36 So the ratio of them is 6/1 or 6

(cos sinx²+ sin²x²)/sin²x² = [(cos sin + sin²)x]/sin²x² =(cos + sin)/x

(19,_16,(_7,15)

(19,_16,(_7,15)

How do I multiply the three dimensions? Sorry I can not understand. Could you please explain to me Thanks/

Hey was The dirty old hotel called The fiddle

The answer is about 19

D C A B A C A A

After being exposed to an electromagnetic shrinking machine, Joe's height decreased by 120120120 cm over 1.51.51, point, 5 seconds. His height decreased by the same amount each second.

Grandpa Ernie is shrinking! Over the past 444 years, his height decreased by a total of 2.4 \text{ cm}2.4 cm2, point, 4, start text, space, c, m, end text. It decreased by the same amount each year.