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Kipish [7]
3 years ago
13

Is the relation a function?

Mathematics
1 answer:
son4ous [18]3 years ago
8 0

Answer:

No

Steps- two rang values exist for domain value -2

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Can someone help me with this problem?
Nadusha1986 [10]

Increasing is= [0,90], [270,360]

Decreasing is=[90,270]

Concave up=[180,360]

Concave down=[0,180]

8 0
3 years ago
Classify the decimal expansion of each fraction as a terminating decimal or a repeating decimal.
Salsk061 [2.6K]

Answer:

repeating-- terminating-- terminating-- repeating.

Step-by-step explanation:

5 0
3 years ago
Determine the number of real solutions for each of the given equations. Equation Number of Solutions y = -3x2 + x + 12 y = 2x2 -
rosijanka [135]

Answer:

Step-by-step explanation:

Our equations are

y = -3x^2 + x + 12\\y = 2x^2 - 6x + 5\\y = x^2 + 7x - 11\\y = -x^2 - 8x - 16\\

Let us understand the term Discriminant of a quadratic equation and its properties

Discriminant is denoted by  D and its formula is

D=b^2-4ac\\

Where

a= the coefficient of the x^{2}

b= the coefficient of x

c = constant term

Properties of D: If D

i) D=0 , One real root

ii) D>0 , Two real roots

iii) D<0 , no real root

Hence in the given quadratic equations , we will find the values of D Discriminant  and evaluate our answer accordingly .

Let us start with

y = -3x^2 + x + 12\\a=-3 , b =1 , c =12\\D=1^2-4*(-3)*(12)\\D=1+144\\D=145\\D>0 \\

Hence we have two real roots for this equation.

y = 2x^2 - 6x + 5\\

y = 2x^2 - 6x + 5\\a=2,b=-6,c=5\\D=(-6)^2-4*2*5\\D=36-40\\D=-4\\D

Hence we do not have any real root for this quadratic

y = x^2 + 7x - 11\\a=1,b=7,-11\\D=7^2-4*1*(-11)\\D=49+44\\D=93\\

Hence D>0 and thus we have two real roots for this equation.

y = -x^2 - 8x - 16\\a=-1,b=-8,c=-16\\D=(-8)^2-4*(-1)*(-16)\\D=64-64\\D=0\\

Hence we have one real root to this quadratic equation.

7 0
3 years ago
Requie<br> 2) 20 + (-45)
harkovskaia [24]

Answer:

20 + (-45) = -25

6 0
3 years ago
Read 2 more answers
if you have 48 apples and you gave your friend molly 20 and you gave your brother and mom 18 each how much apples do you have no
Lelechka [254]

Answer:

10

Step-by-step explanation:

48-20=28

28-18=10

that is how I see it at least

6 0
2 years ago
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