Keira
Most popular questions and responses by Keira
One Last Help
1. 423% as a decimal a. 0.423 b. 42.3 c. 4.23 (GOT THIS) d. 423 2. 4 1/4 as a percent a. 4.20% b. 4.25% (Debating on this or...) c. 420% d. 425% (...this.) 3. 120% as a fraction a. 1 1/5 (GOT THIS) b. 3/25 c. 1 3/25 d. 1 1/2 4. 0.35% as a decimal a. 0.035
asked on January 13, 2016 
precalculus
A.) A Ferris wheel has a radius of 32 feet and completes one revolution every 5.4 minutes. What is the speed of the Ferris wheel (in radians per minute)? _______radians per minute B.) A Ferris wheel has a radius of 39 feet and travels 5.6 feet every
asked on November 29, 2016 
Biology
Which term describes an organism's ability to maintain a stable internal environment? (1) reproduction (2) extinction (3) locomotion (4) regulation
asked on May 3, 2011 
Reiny (this was the one you helped me with)
I tried to explain it by using the arrangement of billiard balls, but I guess you don't play pool. let me try to "draw" the billiard balls . . .o . . o o . .o o o . o o o o o o o o o o sum of one row = 1 sum of two rows = 3 sum of three rows = 6 sum of
asked on June 27, 2009 
Maths
a) A curve is defined by the following parametric equations x= 3t/t^2 +1 , y=1/t^2 +1 (i) Find an expression, in terms of t for the gradient of the curve. (ii) Determine the value of the gradient at the point where t=0
asked on May 2, 2019 
chemistry
calculate the volume of concentrated 4M HCl that is needed to create a 1 L solution of 0.1 M HCl.
asked on January 28, 2015 
Maths
if ycos x = e^x, show that d^2y/dx^22tanxdy/dx2y=0
asked on October 31, 2019 
Genetics
Phenylketonuria is a metabolic disease of humans that results from an autosomal recessive gene. If the frequency of phenylketonurics in the population is 9/10,000, what is the probability that two normal individuals will produce a diseased child?
asked on November 13, 2008 
Math (inequalities)
1)Each packet must have at least 20 gold stars = x > or equal to 20 2)Each packet must have at least 15 silver stars = y > or equal to 15, is this correct? 3)The total number of stars in each packet must not be more than 60 = x+y < or equal to 60, is this
asked on July 1, 2009 
Math (dont want ans just help figuring this out)
Length of one Total # of # of side of pattern triangular white (in cm) Shapes used triang to make pattern ular shapes used 2 4 3 3 9 6 4 16 10 ? ? ? 6 ? ? ? ? ? ? ? ? 20 ? ? Number of gray triangular shapes used 1, 3,6,? ? ? ? ?
asked on June 25, 2009 
Math! HELP!
Help with 2! 0.45% as a decimal is a. 4.50 b. 00.45 c. 0.0045 {I chose this! 0.75% equivalent to a fraction is a. 3/4 {I chose this! b. 3/400 c. 3/40
asked on January 13, 2016 
Binomial
Help me on this one :( Express y= (73xx^2)/[((1x)^2)(2+x)] in partial fractions. Hence, prove that if x^3 and higher powers of x may be neglected, then y=(1/8)(28+30x+41x^2) I did the first part of expressing it in partial fractions. (Since it's very
asked on March 3, 2010 
For Reimy
Math (Reimy)  Reiny, Thursday, June 25, 2009 at 4:46pm You are welcome Just as an afterthought... There is also a set of numbers called the pyramidal numbers, they are ... 1 4 10 20 .... Can you figure out the pattern? (Let their name be a hint.)
asked on June 27, 2009 
Math (Reimy)
Ok Reimy the question came with the ans x=3 then y=2.2, i made t he mistake and put it to two decimal places not realising tehy sequence is one, i will try to be more careful in the future. How did you come up with 20.25 to divide by 20?
asked on June 27, 2009 
precalculus
I don't understand what steps I have to do in order to solve this problem. An angle's rays cut off an arc length of 227 centimeters in a circle with a 40 centimeter radius. A. What portion of the circle's circumference is cut off by this angle? B. What is
asked on November 22, 2016 
geometry
F is the center of the circle, and L is the intersection of the ray with the circle, and assuming the circle has a radius of at least 6cm, the answer is 2. If the radius is less than 6cm, the answer is 1.
asked on October 27, 2011 
Math (Reimy)
Yes i get it now thanks ALOT and no i don't play pool so i had no clue what the order would be.
asked on June 25, 2009 
Math
complete the the table below for the !@#$%^&ntion y=20/x^2 for 2< or equal to x < or equal to 7. x 2 3 4 5 6 7 y ? 2.2 1.3 ? 0.6 ? When x=2, then y=4 When x =5, y =0.8 When x=7, then y=0.41 is this correct? The value of y when x=4.5, is the ans=4.4? And
asked on June 27, 2009 
Math (need more help Reiny)
Ok i figured out the first part that i need to square the numbers so after 4 it will be 5x5,6x6,7x7,8x8and 20x20 to make up the second column, what i don't get is the 3rd one, how do i come up with the number of white triangular shapes used?
asked on June 25, 2009 
math
what is the GCF or greatest common factor of 18,27,30
asked on October 12, 2017 
trig
how can you find points of a tri equation at orgin 1/4, 1/2, 3/4, and end of the period
asked on May 20, 2012

Math
I think it is closer to the 6
posted on January 28, 2019 
Social Studies
He is so wrong, just got 0/20
posted on April 28, 2018 
math
why doesn’t somebody instead of using numbers write the actual answer! So if there messed up you still know the right one:)
posted on March 28, 2018 
physics
Sorry, I wish I could help, but I cant. If you go to Khan Academy and search " physics " it might help :)
posted on February 22, 2018 
Language Arts
I got 10/10 100% on the quiz. These answers are NOT meant for cheating, they are meant for study purposes ONLY.The correct answers for the whole quiz are > 1.a 2.d 4.b 5.d 6.c 7.b 8.c 9.a
posted on February 22, 2018 
Math
16m10
posted on February 8, 2018 
math
6/15 simplified is 2/5
posted on September 21, 2017 
4th grade math
8 different ways. 3x5,5x5,4x4,6x6,3x6,4x5,4x6,6x5. I am a 4th grader myself.
posted on June 1, 2017 
math
please answer
posted on March 22, 2016 
math
Danny is right except Number 1... the correct answer is 4.
posted on January 19, 2016 
Math! HELP!
Oops, 3/400? Thanks. Can you help me now on these? 1. 423% as a decimal a. 0.423 b. 42.3 c. 4.23 (GOT THIS) d. 423 2. 4 1/4 as a percent a. 4.20% b. 4.25% (Debating on this or...) c. 420% d. 425% (...this.) 3. 120% as a fraction a. 1 1/5 (GOT THIS) b. 3/25
posted on January 13, 2016 
2nd grade Math
1  all shapes have 4 sides and 4 corners 2  all shapes are grey 3  any shape with 4 sides, 4 corners which is grey 4  any shape which does not have 4 sides or 4 corners and is something other than white or grey
posted on January 20, 2015 
Chemistry
a)Plated Ni and Ag at 2.98 V b)Plated Ag and Zn at 1.98 V c)2.10/107.868/2*65.38=0.64g zn this is proven
posted on March 9, 2014 
chemistry
if you had 3.00 g in the question 3.00g(mol/g108)(1molZn/2)(65g/mol)= 0.91g
posted on March 9, 2014 
Organic Chemistry
14.04ml
posted on September 16, 2013 
PLEASE HELP!
Mary’s yard is a mess. She needs to hire someone to prune her trees and shrubs. A landscaping service she calls quotes her a price of $15 consultation fee plus $8 an hour for the actual work. Mary’s neighbor has offered to help her out. She doesn’t
posted on March 25, 2013 
Binomial
I realised my mistake
posted on March 3, 2010 
Algerbra 1
9b = 27?
posted on August 26, 2009 
Genetics
I think its the frequency of the gene this is a HardyWeignberg problem Thanks!
posted on November 13, 2008