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Anit [1.1K]
3 years ago
14

What is the value of f(4) + f(7)

Mathematics
1 answer:
DochEvi [55]3 years ago
7 0

Answer:

11

Step-by-step explanation:


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Which system of equations is represented by the matrix below ​
malfutka [58]

Answer:

Option A.

Step-by-step explanation:

The given matrix is

\left[\left.\begin{matrix}4 & 5\\ 7 & -4\end{matrix}\right|\begin{matrix}-16\\ 23\end{matrix}\right]

We need to find the system of equations which is represented by the matrix.

In the given matrix first row represents the first equation and second row represents the second equation of the system of equations.

Let two variables are x and y.

First column represents the coefficients of x and second column represents the coefficients of y.

Numbers on the right side of the matrix represents the numbers which are right side of the equations.

Now, the required equations are

4x+5y=-16

7x-4y=23

Therefore, the correct option is A.

4 0
3 years ago
the points (4,-4) and (4,-6) lie on a circle with the radius of 1. what is the center point of the circle
ycow [4]
The centre point is given by;
( \frac{ x_{2}+ x_{1}  }{2} , \frac{ y_{2} + x_{1} }{2} )
=(  \frac{4+4)}{2}  + \frac{-4+(-6)}{2} )
=( \frac{8}{2} , \frac{-10}{2} )
=(4, -5)
7 0
3 years ago
Find the area. Simplify your answer.
Alona [7]

Answer:

Area = 6x - 6

Step-by-step explanation:

Given:

Height = 2x - 2

Base = 6

Required:

Area

Solution:

Area of triangle = ½*b*h

Area of the triangle = ½*6*(2x - 2)

Area = 3(2x - 2)

Apply distributive property

Area = 6x - 6

7 0
3 years ago
Suppose that the probabilities of a customer purchasing​ 0, 1, or 2 books at a book store are 0.2​, 0.3​, and 0.5​, respectively
svetlana [45]

Answer:

Expectation number of books a customer will​ purchase  =  1.3

Step-by-step explanation:

x     :​ 0      1              2

p(x) :0.2​,  0.3​, and 0.5​

Expectation

E(X) = ∑x P(x)

      = 0 X 0.2 +1 X 0.3+ 2 X 0.5

     = 1.3

Expectation  E(X) =  1.3

Expectation number of books a customer will​ purchase  =  1.3

3 0
3 years ago
What is the slope of the line for the equation y = –2(x - 10) + 8?
PSYCHO15rus [73]
Y=X2+28 PEMDAS says first do parentheses
exponent
multiply
divide
add
subtract
3 0
3 years ago
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