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Doss [256]
3 years ago
14

Which is the graph of a quadratic equation that has a negative discriminant? On a coordinate plane, a parabola opens down. It go

es through (negative 4, negative 4), has a vertex at (negative 2, 0), and goes through (0, negative 4). On a coordinate plane, a parabola opens down. It goes through (negative 4, negative 4), has a vertex at (negative 2, 0), and goes through (0, negative 4). On a coordinate plane, a parabola opens up. It goes through (negative 4, 4), has a vertex at (negative 2, 0), and goes through (0, 4). On a coordinate plane, a parabola opens up. It goes through (negative 4, 8), has a vertex at (negative 2, 4), and goes through (0, 8). Mark this and return

Mathematics
2 answers:
svet-max [94.6K]3 years ago
7 0

Answer:

=1

Step-by-step explanation:

svlad2 [7]3 years ago
7 0

Answer:

On edge is D

Step-by-step explanation:

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Fill in the blank to make the statement true.
Igoryamba

Answer: x= 385/12

Step-by-step explanation:

You would first change the denominator to some number that is common. Then combine the like terms. Lastly, subtract the fraction from the equal and you get your x.

\frac{13}{4} +\frac{1}{6} +x=\frac{71}{2} \\(\frac{39}{12})+(\frac{2}{12})+x=\frac{426}{12} \\\frac{41}{12}+x=\frac{426}{12}  \\x=\frac{385}{12}

6 0
2 years ago
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Can someone plz help me with this one problem plzzzzz I’m being timed!!!!
MaRussiya [10]

Answer:

2:28

3:42

4:56

5:70

8 0
3 years ago
Please help!!!! I am bad at math
zhannawk [14.2K]
1:Correct
2: 8 / 2 = 4
3: 6 / 2 = 3
4: 6*1*6 = 36
5: 0/6 + 6 = 6
6: 5+3+1+9 = 18
8 0
3 years ago
Suppose you have an experiment where you flip a coin three times. You then count the number of heads. a.)State the random variab
WITCHER [35]

Answer:

a) X=number of heads observed when flipped the coin 3 times

b) the probability distribution is

P(X=x) = 3/4 * (1/[(3-x)!*x!)])

or

P(X)=1/8 for x=0 and x=3 and P(X)=3/8 for x=1 and x=2

Step-by-step explanation:

the random variable will be X=number of heads observed when flipped the coin 3 times . Since the result from each flip is independent of the others , then X has a binomial probability distribution , such that

P(X=x)= n!/[(n-x)!*x!)*p^x * (1-p)^(n-x)

where

n= number of times the coin is flipped = 3

p= probability of getting heads in a flip of the coin = 1/2 (assuming that the coin is fair)

therefore

P(X=x)= 3!/[(3-x)!*x!)*(1/2)^(3-x) * (1/2)^x = 3!/[(3-x)!*x!) * (1/2)³ = 3/4 * (1/[(3-x)!*x!)])

P(X=x)= 3/4 * (1/[(3-x)!*x!)])   , for x=[0,1,2,3]

for x=0 and x=3 → P(X)=3/4 * (1/[3!*0!)]) = 1/8

for x=1 and x=2 → P(X)=3/4 * (1/[2!*1!)]) = 3/8

we can verify that is correct since the sum of all the probabilities from x=0 to x=3 is  1/8 +  3/8+ 3/8+ 1/8 = 1

8 0
3 years ago
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Determine if the triangles, CEG and DEF ,are similar. If so, identify the similarity
Harlamova29_29 [7]

Answer:

A

Step-by-step explanation:

AA similarity means 2 angles must be similar.

Angle 1: Angle E is the same for both triangles

Angle 2: Angle F and angle G are congruent because they both have right angle markings so they are both 90 degrees.  

8 0
3 years ago
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