Wednesday

January 18, 2017
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 $\...

*February 29, 2016*

**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 ?

*September 14, 2014*

**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?

*September 14, 2014*

**CHemistry**

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

*June 17, 2014*

**calculus**

I need the minimum distance

*June 15, 2014*

**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 ...

*June 15, 2014*

**Math**

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

*April 7, 2014*

**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

*March 2, 2014*

**Math, precalculus**

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

*March 2, 2014*

**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

*March 2, 2014*

**Math**

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

*May 19, 2013*

**Math**

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

*May 19, 2013*

**Math**

30 c 4

*May 9, 2013*

**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

*April 26, 2013*

**Math**

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

*April 26, 2013*

**math**

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

*April 26, 2013*

**Math**

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

*April 25, 2013*

**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

*April 24, 2013*

**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?

*April 24, 2013*

**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?

*April 22, 2013*

**Math**

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

*April 22, 2013*

**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

*April 22, 2013*

**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

*April 22, 2013*

**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?

*April 10, 2013*

**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.

*April 10, 2013*

**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?

*April 10, 2013*

**algebra**

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

*January 15, 2013*

**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 ...

*January 15, 2013*

**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

*January 14, 2013*

**math**

12/4= x/15 X= 45

*January 14, 2013*

**find the LCM**

6bc

*January 11, 2013*

**Math**

No of blue beads/ total number of beads 10/78

*January 10, 2013*

**math**

That is standard form, did you mean scientific form?

*January 10, 2013*

**math**

Distance = speed multiplied by time

*January 10, 2013*

**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

*January 8, 2013*

**science**

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

*January 7, 2013*

**Math**

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

*January 7, 2013*

**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

*January 5, 2013*

**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

*January 4, 2013*

**algebra**

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

*January 2, 2013*

**math**

Yes,you are right

*January 2, 2013*

**Math**

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

*December 24, 2012*

**Math**

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

*December 21, 2012*

**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

*December 21, 2012*

**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)

*December 19, 2012*

**algebra**

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

*December 19, 2012*

**maths --plse help me..**

9cows + 18goats = 9000 Divide the whole equation with 3 3cows + 6goats = 3000

*December 19, 2012*

**math**

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

*December 18, 2012*

**Math**

18*3/9=6

*December 18, 2012*

**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 ...

*December 15, 2012*

**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 ...

*December 15, 2012*

**8th Grade Science**

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

*December 11, 2012*

**math**

multiply 2.45 with 10 and youget 24.50

*December 11, 2012*

**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

*December 11, 2012*

**Science- Chemistry**

Zn Metallic bond Propane Covalent bond Calcium Carbonate:Both Ionic and Covalent bond

*December 11, 2012*

**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

*December 10, 2012*

**math**

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

*December 9, 2012*

**MATH**

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

*December 7, 2012*

**math**

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

*December 3, 2012*

**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

*December 3, 2012*

**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=...

*December 3, 2012*

**Math**

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

*December 1, 2012*

**Math**

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

*December 1, 2012*

**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?

*December 1, 2012*

**math**

7000 babies

*December 1, 2012*

**Math 8th Grade - Ms. Sue please**

E is the point of intersection of AC and BD.so AC=58 ft which is AE+CE=32+26= 58. Now we have 2 triangles ACB and ACD. Area of triangle ACB= base.height/2 58 times12/2=348 ftsquare Area of triangle ACD=58 times 26/2=754 square ft To find the area of the quadrilateral ,we add ...

*December 1, 2012*

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