Question

How many real number solutions does the equation have?
0=5x^2+2x-12
A- one solution
B- two solution
C-infinity many solutions
D-no solutions

Answer 1

c bro

Answer 2

are u sure

Answer 3

yup positive

Answer 4

ok kcool thanx k

Answer 5

Two solutions were found :

x =(-2-√-236)/10=(-1-i√ 59 )/5= -0.2000-1.5362i
x =(-2+√-236)/10=(-1+i√ 59 )/5= -0.2000+1.5362i

Answer 6

given the (general) equation \(ax^2+bx+c=0\) then let \(\Delta=b^2-4ac\).

If \(\Delta=0\) then 1 real solution.
If \(\Delta>0\) then 2 real solutions.

Answer 7

B

Answer 8

so he was wrong @mjoxprm360

Answer 9

nope:?

Answer 10

Yes

Answer 11

nope

Answer 12

he told me wrong thanx yall

Answer 13

1.2 Factoring 5x2 + 2x + 12

The first term is, 5x2 its coefficient is 5 .
The middle term is, +2x its coefficient is 2 .
The last term, "the constant", is +12

Step-1 : Multiply the coefficient of the first term by the constant 5 • 12 = 60

Step-2 : Find two factors of 60 whose sum equals the coefficient of the middle term, which is 2 .

Answer 14

The equation will have as many solutions as you have values of x available in the domain.

HOWEVER, for one given value of x, there will be ONLY ONE value of y.

Answer 15

yuppp ^^

Answer 16

soo ok im confused whooosss rit

Answer 17

Hey add like terms!

Answer 18

id put c :?

Answer 19

1.1 Pull out like factors :

-5x2 - 2x - 12 = -1 • (5x2 + 2x + 12)

Answer 20

@phebe its B

Answer 21

:?

Answer 22

thanx @mjoxprm360 ik ur soo smart thanx

Answer 23

Anytime :)

Answer 24

i thought it was b at 1st then c now it might be be:o

Answer 25

XD

Answer 26

a=5, b=1, c=-12
we get
determinant = 1 - 4(5)(-12) = a positive number,
therefore, without finding the solutions, we already know it has two real roots.

Answer 27

..

Answer 28

stop commenting cuz @mjoxprm360 got it rit k

Answer 29

:D

Answer 30

neve sed he got wrong but... a=5, b=1, c=-12
we get
determinant = 1 - 4(5)(-12) = a positive number,
therefore, without finding the solutions, we already know it has two real roots

Answer 31

@mjoxprm360 u wana help me

Answer 32

cause immm stuck on 1 :p

Answer 33

Step-1 : Multiply the coefficient of the first term by the constant 5 • 12 = 60

Step-2 : Find two factors of 60 whose sum equals the coefficient of the middle term, which is 2 .

-60 + -1 = -61
-30 + -2 = -32
-20 + -3 = -23
-15 + -4 = -19
-12 + -5 = -17
-10 + -6 = -16
-6 + -10 = -16
-5 + -12 = -17
-4 + -15 = -19
-3 + -20 = -23
-2 + -30 = -32
-1 + -60 = -61
1 + 60 = 61
2 + 30 = 32
3 + 20 = 23
4 + 15 = 19
5 + 12 = 17
6 + 10 = 16
10 + 6 = 16
12 + 5 = 17
15 + 4 = 19
20 + 3 = 23
30 + 2 = 32
60 + 1 = 61

Observation : No two such factors can be found !!

Answer 34

no not that question//

Answer 35

http://gyazo.com/1c8dd999bc7ba5f51367a1716ef6b8b2

Answer 36

this

Answer 37

oh ok

Answer 38

xD

Answer 39

http://gyazo.com/1c8dd999bc7ba5f51367a1716ef6b8b2
is it b?

Answer 40

Yes.

Answer 41

thats what i thought thankyou

Answer 42

no problem.

Answer 43

i h8 maths so much lol

Answer 44

I love it :)

Answer 45

haha will u help me on a question i have no idea about

Answer 46

WHO?

Answer 47

like im so cluless i dot know where to start

Answer 48

Absolutly

Answer 49

thankyou :)

Answer 50

http://gyazo.com/f368d6f2b97aa68dac39be155869b6bd

Answer 51

Is there any way you can put that in text format?

Answer 52

ok

Answer 53

The graphs below show four functions.

Graph A shows function f of x equals 5 multiplied by 2 to the power of negative x. Graph B shows function f of x equals 5 multiplied by 2 to the power of x. Graph C shows function f of x equals 10 to the power of x. Graph D shows function f of x equals 10 to the power of negative x.

Which graph best shows the function f(x) = 5(2)-x to represent the rate at which a radioactive substance decays?

Graph A

Graph B

Graph C

Graph D

Answer 54

ok lets see.

Answer 55

Would an example help?

Answer 56

Example 1

The graph of f(x) = x2 is shown at right. For each new function
listed below, explain how the new graph would differ from this
original graph.
g(x) = !2x2 h(x) = (x + 3)
2 j(x) = x2
! 6
k(x) = 1
4 x2 l(x) = 3(x ! 2)
2 + 7

Answer 57

graoghing and me is like ... i diont know :(

Answer 58

lol sorry

Answer 59

is it a or c xD

Answer 60

lol

Answer 61

2 m8s on twitter , 1 said a , 1 said c

Answer 62

1 said I'm sure that is graph A but don't know how explain
when x=0
5(2)^-x = 5*2^0 = 5*1 = 5

Answer 63

A

Answer 64

5(2) is 10
: the only graph that goes that high is C
: so I'm assuming it is

Answer 65

ah thankyou :)

Answer 66

np :)

Answer 67

i like english ;) , im good at that haha

Answer 68

lol

Answer 69

i gota do 30 questions for homework
xD

Answer 70

im on 18 qand guessesd like 12:p

Answer 71

lol wow any you need help on?

Answer 72

would mean alot
xD
http://gyazo.com/155b55dad19485bea3c19004e44151fb

Answer 73

its mainly (fx) and i really dont get the fuction and exponents

Answer 74

what do you think it is?

Answer 75

your best estimate.

Answer 76

noo idea would be comlete guess if i said anything xD

Answer 77

lol

Answer 78

text format?

Answer 79

Clara is taking a medicine for a common cold. Her body metabolizes the medicine over a certain time interval. The table below shows the amount of medicine f(t), in mg, that was present in Clara's body after time t.


t (hours) 1 2 3 4 5
f(t) (mg) 236.5 223.73 211.65 200.22 189.41


Heidi was administered 300 mg of the same medicine. The amount of medicine in her body f(t) after time t is shown by the equation below.

(t) = 300(0.946)t

Which statement best describes the rate at which Clara and Heidi's bodies eliminated the medicine?
Clara's body eliminated the antibiotic faster than Heidi's body.

Clara's body eliminated the antibiotic at the same rate as Heidi's body.

Clara's body eliminated the antibiotic at half of the rate at which Heidi's body eliminated the antibiotic.

Clara's body eliminated the antibiotic at one-fourth of the rate at which Heidi's body eliminated the antibiotic.

Answer 80

irst
[10:54:09 PM] Alex : Remplace on the second function (to heidi) t by 5
[10:54:21 PM] Alex : and you'll have 227 average
[10:54:48 PM] Alex : so they are more antibiotic for heidi
[10:55:05 PM] Alex : so clara's antibiotic are eliminate faste

Answer 81

my friend on skype said this

Answer 82

for each value in the table, calculate the corresponding value from the function. Now divide one by the other. repeat for the other values in the table. Is that quotient always the same? What does that imply about rate at which the medicine was eliminated?

Answer 83

o_O

Answer 84

you want short answer?

Answer 85

B

Answer 86

answer is B

Answer 87

yes
ily

Answer 88

i actually do

Answer 89

lol

Answer 90

Short answer= answer is B

Answer 91

ty Which of the following is equal to square root of the cube root of 5?

5 to the power of 1 over 3

Answer 92

i have never seen a double root:O

Answer 93

do they exist!!!

Answer 94

lol

Answer 95

:o

Answer 96

hi @phebe

Answer 97

phebe u know how 2 d it xD