What does a Riemann sum represent?

Answers

Answer 1
Answer: A Riemann sum approximates the area of a certain region. Usually it's used in calculus, where you use the Riemann sum to approximate the area a curve instead of using an integral to find the exact value, since that tends to take a lot more time and effort.

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Pls help asap
find the inequality represented by the graph​

Answers

Answer:

the inequality is y>1/3x -3

Step-by-step explanation:

im built different

Where on a coordinate graph are the first numbers before the dashes located?

The coordinates in parenthesis are the answer choices. Where do they go?

Example on how to position your answers: (1, 1) and (0, 0) = 1 (Just an example, this is not a correct answer.)

8
4
10
12
Square root of 41
Square root of 68
Square root of 2
Square root of 50
-------------------------
(-10, 2) and (-2, 2)
(-3, -1) and (5, 1)
(-3, -2) and (1, 3)
(-3, -5) and (-2, -4)
(0, 0) and (5, 5)
(1, 2) and (1, -10)
(1, 2) and (5, 2)
(2, 3) and (10, 9)

Explain your answers thoroughly, please. Thank you! :D
Will pick Brainliest!

Answers

basiclly, we look at the 2 points below and find the distance between them, then we match

d=\sqrt{( x_(2) -x_(1) )^(2)+( y_(2)-y_(1) )^(2)}
when finding the distance between points (x1,y1) and (x2,y2)

if the x values, or y values are same, you don't need the distance formula, just use logic

(-10, 2) and (-2, 2)
the y value is the same so find the distance between the x values
from -10 to -2 is 8
8 matches with this one


(-3, -1) and (5, 1)
use distance formula
d=\sqrt{( 5-(-3) )^(2)+( 1-(-1) )^(2)}=√68


(-3, -2) and (1, 3)
input
d=\sqrt{( 1-(-3) )^(2)+(3-(-2))^(2)}=√41

(-3, -5) and (-2, -4)
input
d=\sqrt{( -2-(-3) )^(2)+( -4-(-5) )^(2)}=√2

(0, 0) and (5, 5)
input
d=\sqrt{( 5-0 )^(2)+( 5-0 )^(2)}=√50


(1, 2) and (1, -10)
x values are same so find distance between 2 and -10
answer is 12

(1, 2) and (5, 2)
y values are same
find distance between 1 and 5
answe ris 4


(2, 3) and (10, 9)
input
d=\sqrt{( 10-2 )^(2)+(9-3)^(2)}=10





ANSWERS (because the spacing has gone wierd)                                                           
(-10, 2) and (-2, 2)=8           
(-3, -1) and (5, 1)=√68             
(-3, -2) and (1, 3)=√41                       
(-3, -5) and (-2, -4)=√2             
(0, 0) and (5, 5)=√50             
(1, 2) and (1, -10)=12             
(1, 2) and (5, 2)=4               
(2, 3) and (10, 9)=10 

Solve. 10/3x + 4/3 = 7+x/2x
A) X = 1/3
B) X = 17/5x
C) X = 1/5
D) X = 1/6

Answers

well multiply both sides by 6x and you get 20+ 8x = 21 + 3x. so x=1/5 so (C)

Use multiplication to solve the proportion
35/28 = n/12

Answers

Answer:

n=15, 35/28=15/12

Step-by-step explanation:

28/12=2.33

35/2.33= 15

Use the function to answer the question.f (x) = x2 +4
What is the value of x when f (x) = 4?

Answers

Answer:f(4)= 12

Step-by-step explanation:

Treat f(x) as y, y=2x + 4, y=12

Answer:

x = 0

Step-by-step explanation:

Given f(x) = x² + 4 and f(x) = 4, then equating

x² + 4 = 4 ( subtract 4 from both sides )

x² = 0 , thus

x = 0

How do I find the vertex of the equation y= (x+7)^2 - 5 ?

Answers

Follow through with the function (x+7)²
(x+7)² is the same as (x+7)(x+7).
You get x² + 14x + 49
Plug it back into the equation to get 
y=x² + 14x + 49 - 5, which equals y=x² + 14x + 44
The formula for the x point in the vertex is -b/2a. (a is x² and b is x)
So -14/2 = -7 = x
Plug this into the equation.
y=-7² + 14(-7) + 44
y=49 - 98 + 44
y=-5

(-7, -5)

I apologize for the error beforehand--I typed 49 instead of 44 and ended up with 0 instead of -5. 
If you have an equation in the vertex form y=(x-h)^2+k the vertex is (h,k)

In your case h=-7,k=-5 so the vertex is (-7,-5)