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Bryant
Questions (38)
The range of a target is found to be 30km. A shell leaves a gun with a velocity of 500m/s-1, what must be the angle of elevation
1 answer
481 views
In 1995-96 academic year there were 86,087 bachelor degrees awarded. That number fell to 71,261 for 2002-2003 school year. In
1 answer
549 views
You are offered $12,000 for an annuity at 3.9% compounded monthly
for 6 yrs what would the monthly payments be?
1 answer
459 views
After Khalil gave Benjamin 3/5 of the rocks in his collection, Benjamin had 70 rocks. If Benjamin had 25 rocks in the beginning,
3 answers
2,063 views
(x^4-11x^3+43x^2-40x+19) ÷ (x^2-9)
Long division
1 answer
480 views
(x^4-11x^3+43x^2-40x+19) ÷ (x^2-9)
1 answer
420 views
x dy/dx + y = 1/y^2, solve using bernoulli's equation.
i got to du/dx + (2u)/x = 2x(u)^(-1/2). the u^(-1/2) is obviously a
1 answer
613 views
Find the tangential and normal components of acceleration of an object that moves along the parabolic path y=4x^2 at the instant
0 answers
490 views
A 160-lb man carries a 25-lb can of paint up a helical staircase that encircles a silo witha radius of 20 ft. If the silo is 90
1 answer
957 views
Find the volume V of the solid in the rst octant bounded by y = 0, z = 0, y = 3,
z = x, and z + x = 4. The best part about this
1 answer
711 views
Consider ∫R∫xydA, where R is the square R=[0,1]x[0,1]. Let us compute some Riemann sums. For any positive integer n we
0 answers
606 views
Consider ∫R∫syDA, where R is the square R=[0,1]x[0,1]. Let us compute some Riemann sums. For any positive integer n we
1 answer
685 views
Suppose R is the rectangle 1<=x<=4, |y|<=2 and evaluate the double integral ∫R∫f(x,y)dA, where f(x,y)= y/(1+3x^4)^(1/2).
I
1 answer
1,001 views
Let z = ∫(e^sin(t)dt) from x to y
a = x b = y I tried thinking about it like a chain rule but even then i'm a little unsure. I
3 answers
507 views
If u = log(r), where r^2 = (x-a)^2 + (y-b)^2, and (x-1) and (y-b) are not zero simultaneously, show that d^2u/dx^2 + d^2u/dy^2 =
1 answer
900 views
lim (x^3-1)/(x^3+2x^2y+xy^2-x^2-2xy-y^2)
(x,y)->(1,0) alright i approached this at y=0. and got the limit as 3. where else can i
1 answer
611 views
lim (x^3-1)/(x^3+2x^2y+xy^2-x^2-2xy-y^2)
(x,y)->(1,0) my question is can you approach (1,0) with y=x and does that change the the
5 answers
532 views
Hi DrBob,
Sorry about that, I wasn't very clear! Can someone please help me complete these calculations for my lab; I am having
2 answers
863 views
Can someone please help me complete these calculations for my lab; I am having some trouble.
A. Standardization of Na2S2O3 -Mass
1 answer
939 views
Hopkin's use of seared , bleared and smeared is an example of?
1 answer
455 views
Using the Substitution method solve
7x+5y=-23 -6x+y=25
2 answers
676 views
How can I calcualate the probability of a normal distribution. Please present formula and an example. Thanks.
1 answer
373 views
Formula used to calculate confidence interval..please give example. Thanks
2 answers
453 views
Formula used to easily calcuate sample size. Please give example.
1 answer
417 views
Construct a descriptive statistics for 100 employees using intervals of 0-4, 4-8, 8-12, 12-16, 16-20.
1 answer
392 views
Construct a frequency distribution for 100 employees using intervals of 0-4, 4-8, 8-12, 12-16, 16-20.
0 answers
402 views
Comcast wants to know the percent of their cable subscribers who use the internet at home. How large of a sample size should
0 answers
602 views
A bank wishes to estimate the mean balances owed by their MasterCard customers within $75. The population standard deviation is
1 answer
664 views
A data contains a random sample of 100 employees with eduation levels. Please construct a 90% confidence interval of the
0 answers
434 views
A resort tracks the number of days each guest stays. They've discovered that this variable is normally distributed with a mean
1 answer
433 views
The mean amount spent by a family on food per month is $500 with a standard deviation of $75. Assuming that the food costs are
1 answer
966 views
If a sample of size 30 is selected, the value of A for the probability p(>- A) = 0.01 is?
0 answers
556 views
Your statistics instructor wants you to determine a confindence interval estimate for the mean test score for the next exam. In
0 answers
683 views
An assembly process includes a torque wrench device that automatically tightens compressor housing bolts; the device has a known
0 answers
465 views
In response to media inquiries and concerns expressed by groups opposed to violence, the president of a university with over
0 answers
1,031 views
Using the information presented in the table in Exercise , calculate the following probabilities?
Blood Alcohol Level of Victim A
0 answers
385 views
Could someone please just check my answers for this? I want to make sure I did these right.
1. A student reported the mass of ten
0 answers
4,237 views
Hey...I just want to make sure my answers to these questions are correct...
1. d=2.507 g/1.22 mL = 2.054918033 g mL^-1 explain
1 answer
2,368 views
Answers (15)
1.5 liter flask is filled with nitrogen at pressure of 12 atmosphere. What size would be required to hold this gas at a pressure of 2.0 atmosphere?
4 1/2
Calculate the return on investment in dollars and as a percentage for an investment that you purchase for $500 and sell for $600.
oh, never mind. I've seen my mistake. disregard this question.
never mind. i thought about it and it is the work done by gravity. not the man. which leads me to another question. how exactly would you find the work done by the man. would he be represented as another vector or or in the vector field?
i meant ∫R∫xydA
oh never mind. i looked back and saw that i differentiated wrong on a step
use google-fu next time and look these things up. volume of a rectangular prism = abc just convert inches to feet. then multiply.
solve for what?
cos(sin(x))*cos(x) 16sin^3(x)*cos(x) d/dx(f(x))= f'(x)*x'
then what can i approach by as well cause i also tried y=x-1 and that was just a mess.
or does x=0 not work because x does not equal zero on the point (1,0). cause my teacher was fairly lazy in class and used the point (0,0) for every example.
alright thanks, my teacher never showed us that if you set one of the variables equal to zero you can make it a one variable function. so say i approach x=0 and find the limit of that to be infinity. does the original function f(x,y) not exist?
im guessing you meant sin(x)^5. in which case yeah you did it wrong. you derive (x)^k , k being a constant, like this k*(x)^(k-1)*x' so f'(x)=5sin(x)^4*cos(x)
I am confused how you would get an order pair from that....can you help?
