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Dafna1 [17]
3 years ago
5

Let f(x) be defined for any positive integer x greater than 2 as the sum of all prime numbers less than x. For example, f(4)=2+3

=5 and f(8)=2+3+5+7=17. What is the value of f(86)−f(82)?
(A) 3 (B) 4 (C) 47 (D) 59 (E) 83

The answer is not B pls remember this
Mathematics
2 answers:
Maksim231197 [3]3 years ago
7 0

Answer:

E

Step-by-step explanation:

MatroZZZ [7]3 years ago
6 0

Answer:

E

Step-by-step explanation:

RSM proves correct

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The function g(x)=-(x)^2+5. The function f(x)=-g(x+2).
Vitek1552 [10]
Short Answer f(x) down 5 units, left 2 units and right side up from g(x)
Step One

Find out what -g(x+2) is.
There are two steps to this. The first is to deal with the minus sign
(g(x)) = - x^2 + 5. Be very careful what you do next. 
Put brackets around both terms on the right.
g(x) = (-x^2 + 5) Now put the minus sign in front of g(x) and another one in front of the brackets.
-g(x) = - (-x^2 + 5) Remove the brackets.
-g(x) = x^2 - 5 

<em>Result</em>
So far g(x) moves down 5 units and opens upward. 

Step Two
The second step is to see what the x + 2 does.
-g(x + 2) = (x + 2)^2 - 5

The final result is that the graph opens upward, moves left 2 spaces and down 5.

There is a graph enclosed to show you the key steps.
The red graph is g(x) = x^2 - 5
The blue graph is g(x+2) = (x+2)^2 - 5

5 0
3 years ago
The midpoint is (blank,blank)
sveta [45]

Answer:

The answer to your question is Midpoint = (0, 1)

                                                    Equation of the bisector    y = 2x + 1

Step-by-step explanation:

Data

P (-4, 3)

Q (4, -1)

Process

1.- Find the midpoint

Xm = (-4 + 4)/2

Xm = 0/2

Xm = 0

Ym = (3 - 1)/2

Ym = 2/2

Ym = 1

Midpoint = (0, 1)

2.- Equation of the line

slope = (-1 - 3) / (4 + 4)

          = -4/8

          = -1/2

But the new line is perpendicular so the new slope is

       m = 2

Equation of the new line

        y - y1 = m(x - x1)

        y - 1 = 2(x - 0)

        y - 1 = 2x

        y = 2x + 1

6 0
4 years ago
Where the graphs of supply and demand functions intersect the market is in equilibrium
Setler [38]
Yes because i took this in economics class

5 0
4 years ago
Two numbers have a sum of 1,212 and a difference of 518. What are the two numbers?
sashaice [31]

Answer:

347 and 865

Step-by-step explanation:

Let the two number be x and y

Therefore, from the given information:

x + y = 1212

x - y = 518

Rewrite both equations to make x the subject:

x = 1212 - y

x = 518 + y

Equate equations and solve for y:

1212 - y = 518 + y

     694 = 2y

         y = 347

Substitute found value of y into one of the equations and solve for x:

x = 518 + 347

x = 865

Therefore, the two numbers are 347 and 865

5 0
3 years ago
I really need help!!!ASAP!!!
olga nikolaevna [1]

Answer:

n= 135

Step-by-step explanation:

Just multiply 45×3 and you'll get 135.

6 0
3 years ago
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