11/26/14

explain how electron structure is used to allocate elements to the s, p, or d block

explain how electron structure is used to allocate elements to the s, p, or d block

please answer

How long will it take 10,000$, to triple, if invested at 6% interest per year?

11/24/14

Write and solve a linear equation to find how much chicken you can afford to buy.

The hamburgers cost $2 per pound and the chicken is $3 per pound. You have $60 to spend. You bought 15 pounds of hamburger

11/24/14

And here's the flask

A flask has a mass of 54.12 g when empty and 180.27 g when filled with water. the density at 22.1°C is 0.997747 g/ml. when the same flask is filled with an unknown liquid, the total mass of the... more

Graph the equation

Graph y=-3/4x2 +6x+6 by doing the following.   a) find the axis of symmetry b) find the vertex c)find the Y intercept and it's reflection point d)evaluate the function for another value of X

11/23/14

gravitron question

Chapter ProblemA popular ride at many theme parks is the Gravitron, which pins riders to the walls of the ride as it spins and then drops the ?oor to leave them suspended by friction and... more

Dupps Lumber yard charges $.50 for each cubic foot (ft³) of sand you buy, plus $6.00 to deliver sand .Let x be the number of cubic feet.

  Write an equation stating that you pay $17.50 to get x ft³ of sand delivered.Then solve the equation for x.

Write the equation of the parabola

Write the equation of the parabola in vertex form given the vertex: (1/4, -3/2) and point (1,3)

At 6:00 a bus left Denver and travelled east at 40 mph. A delivery van left Denver one hour later on the same route at 55 mph.

Algebra 1 At what time will the van take over the bus?

how long will it be til we are one person per square foot of land?

world population is growing at 1.2% per year. the world has 5490232704000000 sqaure feet of land. if the current population is 7.3 billion, how long will it be til we are one person per square foot... more

11/23/14

Condense log x-2 log(x+1)

I need to condense the expression of the logarithm of a single quantity.

Math word problem

An artifact originally had 16 grams of carbon-14 present. The decay model A=16e -0.000121t describes the amount of carbon-14 present after t years. Use the model to determine how many grams of... more

11/23/14

trying to find how much was used for investments at varying percentages to get $795 in interest.

A man inested half his money at 5%, 1/3 his money at 4% and the rest at 3.5%. If his total investment income is $795 how much had he invested?

what are natural numbers?

witch of the following are natural numbers?  pie 7 2 or 4 over 6 and why?

FInd the exact values of all zeros of the polynomial P(x)=2x^4-4x^2+1. Show all steps.

Please show all steps to finding the zeros.

11/22/14

A population of bacteria triples every day..

If there are 8 bacteria initially, write an algebraic expression for the population of bacteria B as a function of time 't'. How many bacteria will there be in 5 days.

11/22/14

Anna has a pocket of dimes and quarters. If she has 10 coins worth $1.45, how many of her coins are quarters

It ia for homewirk and I'm really bad at word problems. Please help!

how to solve this problem by substitution 3x+y=4 y=4x-3

I'm not getting it

11/21/14

the angle which is equals to 4 times of its complement?

explain with clear multiplicaetion si plz

What is the slope of a triangle - Graph and classify

A(3,-5), B(7,1),C(3,1)   Given info   Slope AC = undefined slope BC =0 distance of BC =4     Slope AB= ? distance AC= 6 ( marked correct on my test) distance AB=?

11/21/14

the greatest angle in a pair of suplementary angles that differ by 36 degree

with explanaetion I want sir

This problem has me confused..

The function x(T)=9.8(T/[2π])^2 gives the length x in meters for a pendulum to swing for a period of T seconds. Write the inverse function to find the period of a pendulum in seconds. The period of... more

11/20/14

what's n ...7=6-n/7

Im a dad trying to help my son with algebra plz help 

11/20/14

If a 25 mg sample of radioactive material decays to 18.4 mg in 5 years, how long will it take the sample to decay to 20.5 mg?

I can solve the first part of the question:  25*e^-5k = 18.4 So, k = ln(18.4/25)/-5 = 0.0613    But the rest I need help with. Thanks in advance!

How do you solve this math problem?

A pineapple is 7 times as heaven as an orange. The pineapple also weighs 870 grams more than the Orange. What is the total weight in grams for the pineapple and orange?

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