1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
fredd [130]
2 years ago
15

Which graph represents the given equation?

Mathematics
1 answer:
Alchen [17]2 years ago
7 0

9514 1404 393

Answer:

  A

Step-by-step explanation:

The axis of symmetry of quadratic ax²+bx+c is x=-b/(2a). For the given equation, the axis of symmetry is ...

  x = -4/(2(3/2)) = -4/3

The only graph with its vertex at x=-4/3 is graph A.

_____

<em>Additional comment</em>

You can also make the correct choice by evaluating the equation at a couple of different values of x. Convenient ones are x= -1, or 0, or +1. The value at x=0 is the y-intercept, (0, -2), which seems to be a point on all of the graphs. The value at x=1 is 3/2+4-2 = 3.5, which looks like it is only seen on graph A.

You might be interested in
The city plans a roadway to have trees every mile. If the path is miles long, how many trees will the city need?
Elina [12.6K]

Answer:

32

Step-by-step explanation:

the country would need 30 to 33 trees

7 0
3 years ago
Please help, I rally need ir
Mnenie [13.5K]

Answer:

The one on the top at you’re right

3 0
2 years ago
Write the equation of the parabola in vertex form.<br><br> Vertex (2,3), point (1,-4)
Naddika [18.5K]

Answer:what grade math is this

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Suppose that a college determines the following distribution for X = number of courses taken by a full-time student this semeste
lidiya [134]

Answer:

E(X) = \sum_{i=1}^n X_i P(X_i) = 3*0.07 +4*0.4 +5*0.25 +6*0.28= 4.74In order to find the variance we need to calculate first the second moment given by:

E(X^2) = \sum_{i=1}^n X^2_i P(X_i) = 3^2*0.07 +4^2*0.4 +5^2*0.25 +6^2*0.28= 23.36And the variance is given by:

Var(X) = E(X^2) +[E(X)]^2 = 23.36 -[4.74]^2 = 0.8924

And the deviation would be:

Sd(X) =\sqrt{0.8924} =0.9447

Step-by-step explanation:

Previous concepts

The expected value of a random variable X is the n-th moment about zero of a probability density function f(x) if X is continuous, or the weighted average for a discrete probability distribution, if X is discrete.

The variance of a random variable X represent the spread of the possible values of the variable. The variance of X is written as Var(X).  

Solution to the problem

For this case we have the following distribution given:

X          3      4       5        6

P(X)   0.07  0.4  0.25  0.28

We can calculate the mean with the following formula:

E(X) = \sum_{i=1}^n X_i P(X_i) = 3*0.07 +4*0.4 +5*0.25 +6*0.28= 4.74

In order to find the variance we need to calculate first the second moment given by:

E(X^2) = \sum_{i=1}^n X^2_i P(X_i) = 3^2*0.07 +4^2*0.4 +5^2*0.25 +6^2*0.28= 23.36

And the variance is given by:

Var(X) = E(X^2) +[E(X)]^2 = 23.36 -[4.74]^2 = 0.8924

And the deviation would be:

Sd(X) =\sqrt{0.8924} =0.9447

3 0
3 years ago
I need help with #13 and #14 please
goldenfox [79]
U have to multiply and then divide it and find that scale
5 0
3 years ago
Other questions:
  • Plot √0.5 on the number line.
    7·2 answers
  • Please answer asap...
    15·1 answer
  • Write the rate as a unit rate.<br><br> 5 shirts cost $75.00
    13·2 answers
  • The equation y minus two-thirds = negative 2 (x minus one-fourth) is written in point-slope form. What is the equation in slope-
    7·1 answer
  • 41 points + brainliest​
    6·1 answer
  • The distance between Eagle Lake and Swallow Lake on a map is 9 cm. The scale of the map is 4 cm = 2 km.
    13·1 answer
  • Leigh plans to estimate the area of the figure on the grid by identifying the full and partial squares that make up the figure.
    14·1 answer
  • Can someone help me? please
    12·2 answers
  • An interior design working with a computer program decreases the radius of a circular rug by 10%. By what percent does the area
    6·1 answer
  • I need some help plz
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!