Keira

Most popular questions and responses by Keira
1. 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

2. pre-calculus

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

3. Biology

Which term describes an organism's ability to maintain a stable internal environment? (1) reproduction (2) extinction (3) locomotion (4) regulation

4. 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

5. 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

6. chemistry

calculate the volume of concentrated 4M HCl that is needed to create a 1 L solution of 0.1 M HCl.

7. Maths

if ycos x = e^x, show that d^2y/dx^2-2tanxdy/dx-2y=0

8. 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?

9. 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

10. 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,? ? ? ? ?

11. 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

12. Binomial

Help me on this one :( Express y= (7-3x-x^2)/[((1-x)^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

13. 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.)

14. 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?

15. 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

16. 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.

17. 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.

18. 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

19. 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?

20. math

what is the GCF or greatest common factor of 18,27,30

21. trig

how can you find points of a tri equation at orgin 1/4, 1/2, 3/4, and end of the period

1. Math

I think it is closer to the 6

posted on January 28, 2019
2. Social Studies

He is so wrong, just got 0/20

posted on April 28, 2018
3. 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
4. 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
5. 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
6. Math

16m-10

posted on February 8, 2018
7. math

6/15 simplified is 2/5

posted on September 21, 2017

8 different ways. 3x5,5x5,4x4,6x6,3x6,4x5,4x6,6x5. I am a 4th grader myself.

posted on June 1, 2017
9. math

posted on March 22, 2016
10. math

Danny is right except Number 1... the correct answer is 4.

posted on January 19, 2016
11. 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

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
13. 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
14. 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
15. Organic Chemistry

14.04ml

posted on September 16, 2013

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
17. Binomial

I realised my mistake

posted on March 3, 2010
18. Algerbra 1

9b = 27?

posted on August 26, 2009
19. Genetics

I think its the frequency of the gene this is a Hardy-Weignberg problem Thanks!

posted on November 13, 2008