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He is just taking a well-deserved break.

you are given the vertex of the quadratic, so that should be telling you that you can use vertex form of the quadratic.

the vertex form of g(x) can be written as

a(x-h)^2 + k where the vertex is (h,k)

g(x) = a(x+5)^2

since it has a y intercept of 5, the point (0,-5) should lie on this graph as well

-5 = a(5)^2 = 25a 

a = -1/5

now we have our function:

g(x) = -1/5(x+5)^2

g(1) = -36/5

Thanks. The latex is x is less than or equal to y which is less than or equal to z

You should check out de moivre's theorem

Why is he not active??

0.9x - 30=3/5x, solve for x

x = 100

The first number =1,000,000,001
The last number =9,999,999,999

9,999,999,999 - 1,000,000,001 =8,999,999,998
8,999,999,998 / 2 + 1 =4,500,000,000 ten-digit numbers whose sum is divisible by 2.

Let the number = n

9/10n - 30 = 3/5

0.9n - 30 =0.6

0.9n = 0.6 + 30

0.9n =30.6

n =30.6 / 0.9

n = 34

The number is 320.

5x + 63 + 52 = 180

5x = 65

x = 13  

omg thanks! 1/4 times 150% is also 3/2 times 1/4 which is 3/8. the ratio of the final size to original size will be 3/8/1 which is also 3:8 after simplifying i think.

1. Let's pretend that Alice's original size is 1.

2. After drinking one dose of shrinking potion...

1/2=1/2

After drinking another does of shrinking potion...

1/2/2=1/4

3. After eating a growth cake would be the same thing as multiplying 1/4 by 150%. What would you get? What would the final ratio be?

CPhill will be back after his break. :)

CPhill is taking a break.  At any rate, the value of y is -8.

The answer is 70 because first lets say the skateboard is 100 dollars. 80 percent of that is 80 dollars. Then 87.5 percent of 80 is 70. So the answer is 70 percent.

Let a triangle ABC with BC = 6 cm and the area of 30 cm2. A square PQRS is inscribed so that points S and R is on BC, Q on AC, and P on AB  respectively. Find the side length of the square PQRS.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Let's have an isosceles triangle with a base AC = 6 and the height h = 10         AC/2 * h = 30

A side of a square ( a ):        a / (3 - a / 2) = 10 / 3  

Good advice, jolie (?) it's so small I can barely see it, much less read it.  Sorry if I misspelled it.  Also, here's advice to the ones who answer:  Show the work.  It's not much help just to post an answer.  Heck, they can turn to the back of the book and get the answer. 

_.

1. x = 14.

2. a + b = -1 + 8 = 7.

a + b + c = 2 + 4 + 7 = 13.

  P = 3 [ 2(r / tan30º)  + 2r ]    

Thank you! it was correctnumber 2...?

x² + ( x - 6 )² = 260

omg thanks so much! i understand now