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Posts by juli

Total # Posts: 22

math
I think of a number,multiply it by 3 and add 7.i get the Same answer if I multiply the number by 4 and subtract 12.find the number

phyics
23

Algebra 2 semester2
A piggy bank contains $5.60 in nickels and dimes. The number of nickels is 8 less than 3 times the dimes. How many nickels and dimes are there in the piggy bank?

Chemistry
At a given temperature, a first-order reaction has a rate constant of 3.5 ´ 10–3 s–1. How long will it take for the reaction to be 24% complete? A chemical reaction that is first-order in X is observed to have a rate constant of 2.20 ´ 10–2 s–1...

calculus
I have this question in my homework .its a multiple choice, Select the correct answer. Answers are in billions of dollars per year. and the answers are a)137.4 b)44.4 c)22.2 d)16.96 e)27.48

calculus
Let C(t) be the total value of US currency (coins and banknotes) in circulation at time. The table gives values of this function from 1980 to 2000, as of September 30, in billions of dollars. Estimate the value of C(1990) . t 1980 1985 1990 1995 2000 C(t) 129.9 187.3 271.9 409...

Pre-Algebra
18 is correct

ALG II
Write each rational expression in simplest form and list the values of the variables for which the fraction is undefined. 1. x^2-7x+12/x^2+2x-15 2. 5y^2-20/y^2+4y+4 3. -7+7a/21a^2-21 4. 5(1-b)+15/b^2-16

finance
Peyton’s Colt Farm issued a 30-year, 7.2 percent semiannual bond 6 years ago. The bond currently sells for 87.5 percent of its face value. The company’s tax rate is 38 percent. The book value of the debt issue is $103 million. In addition, the company has a second ...

finance
Peyton’s Colt Farm issued a 30-year, 9.6 percent semiannual bond 6 years ago. The bond currently sells for 87.5 percent of its face value. The company’s tax rate is 38 percent. What is the pretax cost of debt? What is the after tax cost of debt?

finance
What is ICU’s pretax cost of debt? What is ICU’s pretax cost of debt? ICU Window, Inc., is trying to determine its cost of debt. The firm has a debt issue outstanding with eight years to maturity that is quoted at 110.5 percent of face value. The issue makes ...

science
two spheres carrying charge q are hanging from a same point of suspension with the help of threads of length 1 m in a space free from gravity . the distance between them is?

precalc
f(x) =pi/2-x g(x)= 5sinx/8+cos x find (gof)(pi/2) and (fof)(pi/2)

precalc
find the solution of the equation in [0,2pi) cos^2x-sinxcosx=0

geometry
•find the measure of one of the interior angles 180(3)/5 =108 •y is NOT the exterior angle •use the formula: 360-a=2y *where a= the measurement of 1 of the interior angles which is 108 in this case. •so it would be: 360-108=2y 252=2y 252/2=y 126=y •so ...

chemistry
.031 L 0xygen

AP Physics
A skier is accelerating down a 30.0° hill at a = 2.60m/s/s. (a) What is the vertical component of her acceleration? (b) How long will it take her to reach the bottom of the hill, assuming she starts from rest and accelerates uniformly, if the elevation change is 360 m? I ...

college
What are the implications of a single species filling an ecological niche?

history/math
How many jumbo jets could fit into the Cheops pyramid if it was hollow?

biology
What are the differences between Archea and Bacteria?

biology
What is the difference between Bacteria and Archaea?

machines
how do disc grinders work? My disk grinder has a series AC motor attached to a rubber disk upon which the grinding sheet is attached. The grinding sheet I use is carbide glued to paper. The carbide coated sheet rotates against the metal, usually a weld I am smoothing, and the ...

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