# Posts by Praphul

Total # Posts: 66

Geometry
Triangle $ABC$ is isosceles with point $A$ at the point $(2, 7)$, with point $B$ at $(-2, 0)$ and with point $C$ at $(3, -1).$ Triangle $ABC$ is reflected over $\overline{BC}$ to form $\triangle A'BC$. Triangle $A'BC$ is reflected over $\overline{A'C}$ to form \$\...

Science
Suppose the atomic mass unit had been defined as 1/10 the average mass of an atom of phosphorus .what would the atomic mass of carbon be on this scale? What would Avogadro's number be ?

Chemistry
Suppose the atomic mass unit had been defined as 1/10 th of the average mass of an atom of phosphorus. What would the atomic mass of Carbon be on this scale. What would Avogadro's number be?

CHemistry
What is the concentration of Sulfate ion in a 0.5 M solution of Al2(SO4)3?

calculus
I need the minimum distance

calculus
Eric is standing on the ground, a distance of 70 ft from the bottom of Ferris wheel that has a 20 ft radius. His arm is at the same height as the bottom of the Ferris wheel. Janice is on Ferris wheel which makes one revolution counter clock wise every 16 secs. At the instant ...

Math
6,12,24,48,96...... How can you define the nth term

Math precalculus
Write an equation for the hyperbola with center(0,-5); asymptotes y=+_ (19 square root6x)-5 , conjugate axis length of 12 units (+ or -square root of 19 times x divided by 6 )-5

Math, precalculus
Write an equation for the hyperbola with vertices (7,5),(-5,5); foci (11,5),(-9,5)

Algebra
Adding both the equations, we get 2y= 6 Dividing both sides with 2 , y= 3 Plugging y=3 in the second equation, we get x = 2

Math
Given f(x)= (x-4)^2-1 What is the vertex of the graph of this function

Math
1^2 + 0 = 1 2^2 + 1 = 5 3^2 + 2 = 11 4^2 + 3 = 19 5^2 + 4 = 29

Math
30 c 4

Math help
First find the slope of the line using the formula y2-y1/x2-x1 and coordinates (-2,-1)and(2,-3) you will get slope = -2/4 which is equal to -1/2.Slope of a line that is perpendicular to a given line is negative reciprocal. So slope of the line 2

Math
B 165 cubic units. Volume of the rectangular prism is l*w*h

math
I don't think the question is complete.Please repost it with complete details

Math
Square both sides,you will have x+1= 5x-9. I guess you can solve from here,which leads to x=5/2

math
What is the difference between the number of possible answers on a five question true-false test and a five -question multiple choice test withfour choices per question

Math
A gerbil in a maze has 6 places at which to turn left or right.How many different ways can the gerbil get through the maze?

Math
A gerbil in a maze has 6 places at which to turn left or right.How many different ways can the gerbil get through the maze?

Math
I know difference means subtraction.Also you wrote everything that is given.If you know please show me the work

Math
What is the difference between the number of possible answers on a five question true-false test and a five -question multiple choice test withfour choices per question

Math
What is the difference between the number of possible answers on a five question true-false test and a five -question multiple choice test withfour choices per question

Math
A man is cutting a board that is 6 3/4 ft into pieces that are 8 inches each.He will make as many as 8 inch boards as he can.How much wood will be remaining from the original piece when the man finishes cutting?

Math
Each costume requires 2 2/3(two and twothirds) of fabric.Mrs Joy has 18 1/2yds of fabric.How many costumes can she complete.

Math
In the first quarter of a football game ,a quarterback threw for 25 yds and was sacked for -36 yds.What was the quarterback's total yardage for the first quarter?

algebra
164= x-59 to solve for x we need to get rid of 59 Add 59 on both sides x=223

College Algebra
1.10x^2+15x-4x-6 b should be split in such a way that the product is equal to ac and the sum should be equal to b. 5x(2x+3)-2(2x+3) (2x+3)(5x-2) a 2.Find the LCM (18s+9)/4s^2 c 3.[(2a/3)^3]^4/3 both 3 s get cancelled and we have 16a^4/81 c 4. Problem is not clear regarding ...

URGENT Chemistry Question!
7 is neutral while any thing less than 7 is acidic including 6.9 is acidic. Anything more than 7.1 is basic

math
12/4= x/15 X= 45

find the LCM
6bc

Math

math
That is standard form, did you mean scientific form?

math
Distance = speed multiplied by time

Math
5c0a^5 + 5c1a^4b + 5c2 a^3 b^2 + 5c3 a^2b^3 + 5c4ab^4 + 5c5b^5 5c0= 1= 5c5. . 5c1= 5 = 5c4 5c2= 10 5c3= 10 Plugging in these values, a^5+ 5a^4b+ 10a^3b^2 + 10a^2b^3 + 5ab^4 + b^5

science
V= 330m/s Wavelength= .009m Frequency= 330/.009 hz

Math
For the first part,the question is incomplete. Part2Foreign mammals = total-Animals in US 256 Ratio is 256:325

Math
State the number of complex roots,possible number of real roots and possible rational roots for x^5 - x^3 - 11x^2+ 9x+18=0

math
You can either find the LCM for all the three fractions or you can convert them to decimal to find the least to greatest. Hope you got it

algebra
Assume Friday's age = x Fred's age = 3x 3x+x= 68 4x= 68 x=17 Fred's age = 3*17= 51

math
Yes,you are right

Math
Factor this a^2b^2 -ab^3+16b^4

Math
Plug in x=-5 You get 25+3 = 28

Math emergancy
for each fraction multiply with the same number NR and DR for 9/12 18/24,3/4,27/36 Continue for all the fractions

math
(x+4)(3x^2-11x+6) You need to factorise 3x^2-11x+6 .Sum of the numbers should be equal to -11x and product should be equal to 18x^2.It is -9x and -2x (x+4)(3x^2-9x-2x+6) (x+4)[(3x(x-3)-2(x-3)] (x+4)(3x-2)(x-3)

algebra
Set up a proportionality 15/25=x/85 original/shadow for each x=51 ft

maths --plse help me..
9cows + 18goats = 9000 Divide the whole equation with 3 3cows + 6goats = 3000

math
m+m+m-5=3.23 3m=8.23 m= 8.23/3

Math
18*3/9=6

Math
One student studied for 8 years in college and her tuition bills are recorded. Years. One semester tuition 1. 4680 2. 4960 3. 5510 4. 6060 5. 6845 6. 7600 7. 8435 8. 9250 Construct the scatter plot for the data with the scales.choose 3 points,find a quadratic equation in ...

Math
The sluggers were up to bat in the bottom of 9 th inning.theo slam was up to bat. As he hit the ball toward left field, it rose from 3 to 10 to 50 feet as the horizontal distance from home plate increased from 0 to 2 to 14 feet. Assume that the vertical distance varies ...

Fe is Iron O2 is oxygen Fe3O4 is Iron Oxide or Ferrous ferric oxide

math
multiply 2.45 with 10 and youget 24.50

comparing fractions
let us have a common denominator so multiply both NR and DR of 3/8 fraction with 2 It becomes 6/16 Now compare the NRs of both fractions and we can say 15/16 is bigger

Science- Chemistry
Zn Metallic bond Propane Covalent bond Calcium Carbonate:Both Ionic and Covalent bond

Math
Let the number of girls be x Then boys = x+4 Total number of students= 40= x+x+4 2x+4=40 2x= 36 x= 18 number of girls= 18

math
Show that -1/2+ 1/2(i3 root) is a cube root of 1

MATH
You did not write the scale on the top...so please write the question completely

math
Speed= distance/time 495/9=55 miles/hr

maths
Since it is APthe difference of 3x+6 and 2x+p is equal to the difference of 2x+p and x So 3x+6 -(2x+ p)= 2x+p-x 3 x+6-2x-p= x+ p X+6-p= x+p Canceling x on both sides and bringing ps to one side we will have 2p= 6 P=3

maths
We have the formula a+(n-1)d=nth term Where a is the 1st term ,d is the difference and n is the nth term So1st term= a 2nd term= (a+1)d 3rd term= (a+2)d 5th term=(a+4)d Adding ad+2d+ad+ 4d= 38 2ad+ 6d= 38 In the same way 7th term=(a+6)d 10th term=(a+9)d Adding these 2ad+15d=...

Math
It's a rectangular garden and the fence is on 4 sides,my question is how does graph help

Math
It's a rectangular garden,on all 4 sides,and how does a graph solve the problem?

Math
A gardener is putting a fence along the edge of his garden. If he has 20 m of fence , what is the largest area he can enclose? How can a graph solve the problem? What quadratic equation represents the area of the garden?

math
7000 babies