# Posts by Christa

Total # Posts: 28

Statistics (Math 210)
Hi there, I am working on a few homework assignments and having trouble with a few questions. I sincerely appreciate any and all help! :) A bank claims that the mean waiting time in line is less than 4.1 minutes. A random sample of 60 customers has a mean of 4 minutes with a ...

Trigonometry
Convert to a rectangular equation. r+5sinØ = 7cosØ Is the solution to this x^2+y^2-7x+5y

Math!
I know that it starts like this: 6 | 4 9 8 | 8 8 But I need help with the rest.

Math!
The table below shows the percentage of households that own a microwave in different countries. Construct a stem-and-leaf plot of the data. Country Percent Of Household With Microwave Ovens _____________________________________________________________ Argentina 97% ...

Point A lies in plane B. How many lines can be drawn perpendicular to plane B through point A? 1) one 2) two 3) zero 4) infinite

language
That sounds fine!

Math
Point A lies in plane B. How many lines can be drawn perpendicular to plane B through point A?

Math
4t-(5+2t)=37

chemistry
How many mL of 0.416 M of HCl are needed to dissolve 8.68 g of BaCO3? 2HCl(aq)+BaCO3(s)=BaCl2(aq)+H2O(l)+CO2(g)

Math-Algebra
The table shows the amount earned for washing cars. How much is earned for washing 25 cars? 3 cars=\$13.50, 6 cars=\$27, 9 cars=\$40.50, and 12 cars=\$54

Math-Geometry
Angle AOB=x+3, Angle AOC=2x+11, Angle BOC=4x-7. Solve for x.

Physics
ac=v2/r (1.5x10^6)^2/1.54x10^11=14.610m/s^2

math
determine the inverse, f^-1, of f when f(x)= 5-2x^3

math
find the domain and range of: the square root of 25-x^2

math
Biologists have noticed that the chirping rate of crickets of certain species is related to temperature, and the relationship appears to be very nearly linear. A cricket produces 113 chirps per minute at 70 degrees Fahrenheit and 173 chirps per minute at 80 degrees Fahrenheit...

math-functions
A car purchased for \$11900 has a resale value of \$2000 after 10 years. Assuming its resale value decreased linearly over these years, what was the resale value of the car after 3 years?

algebra
yes, you go over -9 on the x axis and draw a linear diagonal line up to 9 on the y axis.

Geometry
30-60-90 triangle has a hypoteneuse of 10 use trig to find the short side

world history
How did Suleyman's legal code help sultans run the Ottoman Empire.

chemistry
Theres suppose to be something wrong with the formula, but i don't know what it is. Help? (NH4)3Cl2

Math-Pre Cal & Trig
A pendulum swings uniformly back and forth, taking 2 seconds to move from the position directly above point A to the position directly above point B. . . . . _______________._______________ A . B . (SIMPLE DRAWING) The distance from A to B si 20 centimeters. Let d(t) be the ...

pre-calculus
While pulling a stalled car, a tow truck's cable makes an angle of 50 degrees above the road. If the tension on the tow truck's cable is 1600 newtons, how much work is done by the truck on the car pulling it 1.5 kilometers down the road? The answer is 1,542,690 N . m I...

English
What are too examples of irony in the short story "Happy Event"?

biology
what would be the offspring ratio from the cross of a roan bull with a white cow

Social Studies
What do Australia's government members say about australia and its government?

pre-algebra
wait how did you get that?

pre-algebra
show that the number is rational by writing it as a quotient of two integers. 1. 24 2. 5 7/18 3. 1 4. 0.3 im not so sure what your suppose to do

Computer Science
Help me find the answers to these brain teasers. #1 I am where the sky is orange; I am where the grass is red; I am the land of violet bananas and the home to blue oranges. What am I? #2 Wha is a word that is 1 syllable but when you add 1 letter the end; it becomes 3 syllables...