Question

@ganeshie8

Answer 1

find the vertex
http://www.wolframalpha.com/input/?i=vertex+y+%3D+-5x%5E2%2B240x-2475

Answer 2

24,405?

Answer 3

you may find it by completing the square or some other thing and verify it wid wolfram

Answer 4

yes, so..

Answer 5

24 being the first and 405 being the second answer

Answer 6

Do you know how to find the vertex?

Answer 7

correct,
24 is # of tablets
the other guy is watever the profit when x = 24

Answer 8

f(x) = ax^2 + bx + c
where the vertex coordinates are(-b/2a , f(-b/2a))

Answer 9

So your a = -5

Answer 10

Ok lol

Answer 11

For this I got 2sqrt5 for the first and 4.42 for the second

Answer 12

\(\large \color{red}{\checkmark}\)
\(\large \color{red}{\checkmark}\)

Answer 13

^

Answer 14

hey check the second part

Answer 15

http://www.wolframalpha.com/input/?i=sqrt%286%5E2-4%5E2%29

Answer 16

4.47 it should be

Answer 17

you should get 4.47 for second part ?

Answer 18

I did.. I wrote it wrong

Answer 19

i guessed so

Answer 20

http://www.wolframalpha.com/input/?i=182+%3D+w*l%2C+l+%3D+12%2B2w

Answer 21

your too fast ganeshie haha

Answer 22

^take positive values, as lengths cannot be negative

Answer 23

Soon as I start typing it you're done XD

Answer 24

we worked all these in the morning lol,
she is just checking the problems she is having

Answer 25

Oooh haha, I was making long solutions for them o_O

Answer 26

we worked all these in the morning lol,
she is just checking the problems she is lol uncomfortable wid..

Answer 27

:P

Answer 28

im even pressing Post button before even typing completely ;)

Answer 29

haha

Answer 30

x^2 + x^2 = 6

Answer 31

http://www.wolframalpha.com/input/?i=x%5E2%2Bx%5E2%3D6

Answer 32

sqrt-3,sqrt3

Answer 33

can length of a shelf be negative ?

Answer 34

No so just sqrt3

Answer 35

yup^

Answer 36

I got sqrt135 and 11.62?

Answer 37

3sqrt15 not sqrt135

Answer 38

http://www.wolframalpha.com/input/?i=x%5E2+%3D+12%5E2-3%5E2

Answer 39

\(\large \color{red}{\checkmark}\) \(\large \color{red}{\checkmark}\)

Answer 40

complete teh square : \((x+5)^2 \)

Answer 41

\((x- -5)^2+0 \)

Answer 42

compare it wid \(a(x-h)^2+k\)

vertex = \((h, k) = ?\)

Answer 43

x=5?

Answer 44

yes, and y coordinate = 0

so...

Answer 45

hey no, actually :

x coordinate = -5
y coordinate = 0

Answer 46

for y-intercept, plugin x = 0

Answer 47

(0,25)

Answer 48

y intercept is \(\large \color{red}{\checkmark}\)

Answer 49

Vertex (-5,0)

Answer 50

\(\large \color{red}{\checkmark}\)

Answer 51

graph d

Answer 52

\(\large \color{red}{\checkmark}\)

Answer 53

I got 3sqrt5 and 6.71

Answer 54

http://www.wolframalpha.com/input/?i=x%5E2+%3D+3%5E2%2B6%5E2

Answer 55

both \(\large \color{red}{\checkmark}\)

Answer 56

Doing math now

Answer 57

evil teacher :/

Answer 58

1) 143.05
2) 453.85
3) 1034.65
4) 1910.2
5) 3006.25

Answer 59

check 4th part again,
everything else is correct !

Answer 60

1885.45

Answer 61

correct !

Answer 62

http://www.wolframalpha.com/input/?i=1320.5+%3D+-2.06x%5E2+%2B+77.85x+%2B+748

Answer 63

after 10 years, they will equal that number

Answer 64

so add 10 to 1990

Answer 65

10 + 1990 = 2000

so in year 2000, the inmates equal that number

Answer 66

Gotcha.. 2000 there were that many

Answer 67

yes

Answer 68

I got 2sqrt7 and 5.29

Answer 69

So just 2sqrt7

Answer 70

correct !
http://www.wolframalpha.com/input/?i=x%5E2%2B6%5E2%3D8%5E2

Answer 71

wat did u get ?

Answer 72

nothing yet lol I have a problem with the sqrt ones sometimes

Answer 73

c^2 = 2^2 + sqrt(60)^2

Answer 74

c^2 = 4 + 60

Answer 75

c^2 = 64

Answer 76

c = ?

Answer 77

8

Answer 78

yes !!

Answer 79

8,

rounded to two decimal places it is : 8.00

Answer 80

So I'd right 8 for both

Answer 81

for second box, put 8.00

Answer 82

and the first is 8

Answer 83

right