Answers
Answer: n = 3 n = 4
Upper Sum ≈ 3.41 Upper Sum ≈ 3.25
Lower Sum ≈ 2.15 Lower Sum ≈ 2.25
Step-by-step explanation:
You are trying to find the area under the curve. Area = height x width.
Height is the y-value at the given coordinate --> f(x)
Width is the distance between the x-values --> dx
n = 3
First, let's figure out dx: the distance from -1 to +1 is 2 units. We need to divide that into 3 sections because n = 3 --> dx = 2/3
So the points we will evaluate is when x = {-1, -1/3, 1/3, 1}
For the upper sum, we find the max y-value for each interval
For the lower sum, we find the min y-value for each interval
Next, let's find the height for each of the x-values:
f(x) = 1 + x²
f(-1) = 1 + (-1)² = 2
f(-1/3) = 1 + (-1/3)² = 1 + 1/9 --> 10/9
f(1/3) = 1 + (1/3)² = 1 + 1/9 --> 10/9
f(1) = 1 + (1)² = 2
Interval Max Min
{-1, -1/3} f(-1) = 2 f(-1/3) = 10/9
{-1/3, 1/3} f(-1/3) = 10/9 f(0) = 1 (vertex lies in this interval)
{1/3, 1} f(1) = 2 f(1/3) = 10/9
Now, let's find the Area: A = f(x) dx:
[tex]\text{Upper Sum:}\quad A=\dfrac{2}{3}\bigg(2+\dfrac{10}{9}+2\bigg)\\\\.\qquad \qquad \qquad =\dfrac{2}{3}\bigg(\dfrac{46}{9}\bigg)\\\\.\qquad \qquad \qquad =\dfrac{92}{27}\\\\.\qquad \qquad \qquad =\large\boxed{3.41}[/tex]
[tex]\text{Lower Sum:}\qquad A=\dfrac{2}{3}\bigg(\dfrac{10}{9}+1+\dfrac{10}{9}\bigg)\\\\\\.\qquad \qquad \qquad \qquad =\dfrac{2}{3}\bigg(\dfrac{29}{9}\bigg)\\\\\\.\qquad \qquad \qquad \qquad =\dfrac{58}{27}\\\\\\.\qquad \qquad \qquad \qquad =\large\boxed{2.15}[/tex]
*****************************************************************************************
n = 4
First, let's figure out dx: the distance from -1 to +1 is 2 units. We need to divide that into 4 sections because n = 4 --> dx = 2/4 = 1/2 (simplified)
So the points we will evaluate is when x = {-1, -1/2, 0, 1/2, 1}
For the upper sum, we find the max y-value for each interval
For the lower sum, we find the min y-value for each interval
Next, let's find the height for each of the x-values:
f(x) = 1 + x²
f(-1) = 1 + (-1)² = 2
f(-1/2) = 1 + (-1/2)² = 1 + 1/4 --> 5/4
f(0) = 1 + (0)² = 1
f(1/2) = 1 + (1/2)² = 1 + 1/4 --> 5/4
f(1) = 1 + (1)² = 2
Interval Max Min
{-1, -1/2} f(-1) = 2 f(-1/2) = 5/4
{-1/2, 0} f(-1/2) = 5/4 f(0) = 1
{0, 1/2} f(1/2) = 5/4 f(0) = 1
{1/2, 1} f(1) = 2 f(1/3) = 5/4
Now, let's find the Area: A = f(x) dx:
[tex]\text{Upper Sum:}\qquad A=\dfrac{1}{2}\bigg(2+\dfrac{5}{4}+\dfrac{5}{4}+2\bigg)\\\\\\.\qquad \qquad \qquad \qquad =\dfrac{1}{2}\bigg(\dfrac{26}{4}\bigg)\\\\\\.\qquad \qquad \qquad \qquad =\dfrac{13}{4}\\\\\\.\qquad \qquad \qquad \qquad =\large\boxed{3.25}[/tex]
[tex]\text{Lower Sum:}\qquad A=\dfrac{1}{2}\bigg(\dfrac{5}{4}+1+1+\dfrac{5}{4}\bigg)\\\\\\.\qquad \qquad \qquad \qquad =\dfrac{1}{2}\bigg(\dfrac{18}{4}\bigg)\\\\\\.\qquad \qquad \qquad \qquad =\dfrac{9}{4}\\\\\\.\qquad \qquad \qquad \qquad =\large\boxed{2.25}[/tex]
Related Questions
please help with 1-3 thank you!
Answers
Answer:
x the probleme
Step-by-step explanation:
Answer:
2 is 3/5 and 3 is (0,-6) and the slop is 4/3
Step-by-step explanation:
A pyramid has a square base with an area of 169ft. What is the perimeter of the base of the pyramid?
Answers
Answer:52 ft.
Step-by-step explanation: If the area of the base of the pyramid is
169
ft
2
then each side of the base is
13
ft
long because the base of the pyramid is a square.
Length of the side,
s
=
√
169
=
13
Iif we take the area of a square
A
=
s
2
where
s
=
13
we get the area of the base to be
169
ft
2
thus proving that each side of the base is
13
ft
long.
So to find the perimeter of the base of the pyramid we use the formula:
P
=
4
s
where
s
=
13
ft
and thus,
p
=
4
⋅
13
ft
=
52
ft
part 2. Laws of sines. Please show work. Round answer to the nearest tenth.
Answers
Answer:
5) 30.0m
6) 34.0mi
7) 11.0ft
8) 17.0 km
(all rounded off to the nearest tenth)
Step-by-step explanation:
Please see attached pictures for the full solution.
The measure of an angle is 103°. What is the measure of its supplementary angle?
Answers
Answer:
77
Step-by-step explanation:
Let's let the unknown number be x.
Supplementary angles add up to a total of 180 degrees. Since we already know one angle is 103, this means that:
[tex]103+x=180[/tex]
Subtract 103 from both sides:
[tex]x=77\textdegree[/tex]
So, the measure of its supplementary angle is 77 degrees.
And we are done!
Answer:77
Step-by-step explanation:
Don ate 4/22 of the pie.what percent of the pie did he eat?
Answers
Answer:
9.090909090909%
Step-by-step explanation:
2/22 = 1/11 = 9.090909090909%
Hope This Helps :)
On a coordinate plane, a curved line crosses the x-axis at (negative 1, 0), and crosses the y-axis at (0, negative 3). What are the intercepts of the graphed function? x-intercept = (–1, 0) a y-intercept = (–3, 0) b x-intercept = (0, –1) c y-intercept = (0, –3) d x-intercept = (0, –1) e y-intercept = (–3, 0) f x-intercept = (–1, 0) g y-intercept = (0, –3)
Answers
Answer:
It’s d on edge
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
Edge
Help, please! College precalc! TIA.
Answers
Answer:
I believe that the answer is 0
Step-by-step explanation:
All you have to do is add f and g and substitute -2 for x. When you substitute -2, simplify.
Step-by-step explanation:
(f+g)=(x-4)+(x^2-x)=x^2+x-x-4=x^2-4
when x=-2
(f+g)(-2)=(-2)^2-4=0 ans.
On a number line where is the number 14 relative to the number -23
Answers
Answer:
14 is to the right of -23
Step-by-step explanation:
On the number line, the number 14 will appear on the right side of -23 with respect to zero from front.
What is a number line?Integers are arranged at equal intervals along horizontal straight lines called number lines. A number line can be used to represent every number in a series.
Number line is a graphical representation of whole numbers, natural numbers, rational and irrational numbers. which represents both negative and positive numbers such that, positive numbers from 1 to infinity lie on the right-hand side of zero and negative numbers from (- 1) to (- infinity) lie on the left-hand side of zero.
Therefore, zero is considered as the reference point.
Number 14 is positive natural number, it appears on the right side of zero and (-23) appears on the left side of zero.
Thus, On a number line, the number 14 lies to the right of number -23.
Learn more about number line here:
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Jackson claims that the order of the best deal to the worst deal (based on cost/oz) is 10 oz bottle, 89 oz bottle, 59 oz bottle, case of 24 10 oz bottles, and 64 oz carton. Which statement about Jackson’s claim is true?
Answers
Answer:
Jackson is incorrect.
Step-by-step explanation:
He should compare the values in equal place values to compare all the decimals, not just those of the same length. For example, 0.0561 < 0.05625 < 0.0564.
Answer:
C
Step-by-step explanation:
The temperature is -14 degrees. Over the next three days, the temperature drops 5 degrees, then 3 degrees, and finally 1 degree. What is the temperature now?
Answers
Answer:
-23 degree
Step-by-step explanation:
=>-14-5-3-1
=>-23
Answer:
-23°
Step-by-step explanation:
= -14 - (5+3+1)
= -14 - 9
= -23°
The sum of two integers is 10. Their difference is 4.
What are the two integers?
Answers
answer = 7&3
step by step solution
let's take X and Y two intigers
X+Y=10
X-Y=4
adding both equation
X=7
Y=3
Plot the following points to create a rectangle. Find the missing vertex.(5,3);(-5,3);(-5,-1)
Answers
Answer:
(5,1)
Step-by-step explanation:
I took the test
Can you guys help me how to answer thus
Answers
Answer:
a, 32
b, -58
Step-by-step explanation:
a) g(0) = 6 - 0^2 = 6
--> f(g(0)) = 4 . 6 + 8 = 32
b) f(0) = 4 . 0 + 8 = 8
--> g(f(0)) = 6 - 8^2 = 6 - 64 = -58
math problem At a nba game the ratio of the score of team b was 16.21. of a team a got 80 points. how many points did team b get?
Answers
Answer:
105 points.
Step-by-step explanation:
The scores of team A and B is 16 and 21.
if 16 = 80, The ratio of 16 to 21 is 5.
So, that means 16 x 5 is 80.
How many points did team B get?
score x gap between 16 to 21
= 21 x 5 = 105.
the team B got 105 points.
On a family dinner table there are two plates for everybody, and only one plate for little Katelyn. 10 people and Katelyn came to the dinner. How many plates were on the table?
Answers
Answer:
21 plates
Step-by-step explanation:
10 people each got two plates, 10 x 2 = 20.
Plus Katelyn's plate, 20+ 1 = 21.
Hope this helps!
Answer:
its actually 21 plates
Step-by-step explanation:
10×2=20+1=21
What is the value of 3 in the number 235,178???
Answers
Answer:
30,000
Step-by-step explanation:
Set the other digits to zero to obtain your answer:
030,000
The value of the 3 is 30,000.
___
It is in the "ten-thousands" place, so represents 3 ten-thousands, or thirty thousand.
Is 7.787887888… a rational number? PLEASE ANSWER ASAP!! WILL GIVE BRAINLIEST!!!!!
Answers
Answer:
yes it is a rational number because the number has a repeating pattern
Step-by-step explanation:
The number 7.787887888... is rational, Yes; it has a pattern that is repeating.
What is an irrational number?It is defined as the numbers in all real numbers which cannot be represented as rational numbers, in other words, the irrational number cannot be expressed in the form of p/q form.
A rational number is a sort of real number that has the form p/q and does not equal zero.
It is given that:
The number is 7.787887888
As we know,
The rational number can be represented in the form of p/q where q cannot be equal to zero.
If the number is terminated after some decimal places then it is said to be a rational number.
If the number is repeating its digit after decimal then it is said to be an irrational number.
Thus, the number 7.787887888... is rational, Yes; it has a pattern that is repeating.
Learn more about the irrational number here:
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Find R U S, given the following sets:
P = {b, d, f, g}
Q = {a, b, c, d}
R = {c, e, f, g}
S = {a, d, g}
Answers
Answer:
(RUS)={ a,c,d,ef,g}
Step-by-step explanation:
All the number of alphabets present in R and S will be the union of set R and S
10/2i?
(dividing complex numbers)
Answers
Note that; i = √-1
Divide using the rule
10/2i = -5i
Best of Luck!
Find the unit rate and use it answer the question
35 copies in 7 minutes, how may copies in 10 minutes
Answers
Answer:
50 copies in 10 minutes
Step-by-step explanation:
becuase it takes 7 minutes for 35 copies and 5 copies times 7 is 35 so 5 copies per minute and it would take 10 minutes for 50 copies
The US courts are reviewing a case to see whether a work has been refused fairly. What is an example of something they might consider when trying to decide whether the use was fair?
Answers
Answer:
The Purpose and Character of the usage of the work.
Step-by-step explanation:
In the United States of America, there is a terminology used in court called Fair use. This is a law in the USA that permits a limited use of one or more copyrighted materials without the need to first acquire permission from the holder of the copyright.
Thus, an example of something they might consider when trying to decide whether the use was fair is:
The Purpose and Character of the usage of the work.
This is because the original purpose of the work may have been altered to mean something new or different or it was just copied exactly into another work.
So knowing the purpose and character of usage of the work or material in question would be something they would consider
A magic square is a square array of numbers arranged so that the numbers in all rows, all columns, and the two diagonals have the same sum. Create a 3-by-3 magic square using nine of the ten numbers, 20, 21, 22, 23, 24, 25, 26, 27, 28, and 29. Explain your solution and reasoning. List the strategies used.
Answers
Answer:
strategies used are : identifying a sub-goal and Guess and check
Step-by-step explanation:
To create a 3 by 3 magic square using nine of the ten numbers
20,21,22,22,23,24,25,26,27,28 and 29
In order to achieve a 3 by 3 magic square table we will pick Nine consecutive numbers out of the ten numbers given and apply the format below
n+1,n-4,n+3,n+2,n,n-2,n-3,n+4,n-1
we will take n = 24
attached below is the magic square
The population of a colony of bacteria can be modeled by the function P(t) = 19,300(5)^t, where t is the elapsed time
in hours. What is the inverse function?
Answers
Answer:
C. P–1(t) = log5 (StartFraction t Over 19,300 EndFraction)
Step-by-step explanation:
The inverse function of P(t) is [tex]P^{-1} (t)=log_{5}( \frac{t}{19300})[/tex]
What is an inverse function?The inverse function is a function obtained by reversing the given function. An inverse is a function that serves to “undo” another function. The domain of the original function becomes the range of inverse function and the range of the given function becomes the domain of the inverse function.
For the given situation,
The function P(t) = 19,300(5)^t, where t is the elapsed time in hours.
Steps to find inverse function:
Step 1: Replace P(t) as y
[tex]P(t) = 19,300(5)^t[/tex]
⇒ [tex]y= 19,300(5)^{t}[/tex]
Step 2: interchange t and y
⇒ [tex]t = 19,300(5)^y[/tex]
Step 3: Now solve for y
⇒ [tex]\frac{t}{19300} =5^y[/tex]
By law of logarithm,
[tex]a^{x} = y[/tex]
⇒ [tex]log_{a} y=x[/tex]
Thus the equation becomes,
⇒ [tex]log_{5} \frac{t}{19300}=y[/tex]
Step 4: Now replace y as [tex]P^{-1}( t)[/tex]
⇒ [tex]P^{-1} (t)=log_{5}( \frac{t}{19300})[/tex]
Hence we can conclude that the inverse function of P(t) is [tex]P^{-1} (t)=log_{5}( \frac{t}{19300})[/tex].
Learn more about inverse function here
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5x-11=19. Solve for x. Please explain how you got x
Answers
Answer:
x = 6
Step-by-step explanation:
5x - 11 = 19
+11 = +11
5x = 30
5x/5 = 30/5
x = 6
hanks pickup can travel 68 miles on 4 gallons of gas. How many gallons will hanks pickup need to travel 34 miles?
Answers
Answer: This is a ratio of miles (m) per gallon (g), which can be written as the fraction m/g. So Hank's truck can do 68 miles per 4 gallons, or 68/4. The other ration of miles per gallon is 34 miles to (x) amount of gallons. If you set these ratios equal to each other, the resulting equation can help you solve for the number of gallons.
Answer:
2 gallons
Step-by-step explanation:
(4x - 2) + (6x - 2). Please help brainly
Answers
Answer:
2 (5 x - 2) = 10 x - 4 or x = 2/5 (if you need to solve for x)
Step-by-step explanation:
Simplify the following:
4 x - 2 + 6 x - 2
Hint: | Group like terms in 4 x - 2 + 6 x - 2.
Grouping like terms, 4 x - 2 + 6 x - 2 = (4 x + 6 x) + (-2 - 2):
(4 x + 6 x) + (-2 - 2)
Hint: | Add like terms in 4 x + 6 x.
4 x + 6 x = 10 x:
10 x + (-2 - 2)
Hint: | Group the negative terms in -2 - 2 together and factor out the minus sign.
-2 - 2 = -(2 + 2):
10 x + -(2 + 2)
Hint: | Evaluate 2 + 2.
2 + 2 = 4:
10 x - 4
Hint: | Factor out the greatest common divisor of the coefficients of 10 x - 4.
Factor 2 out of 10 x - 4:
Answer: 2 (5 x - 2)
________________________________
if you need to solve for x then:
Solve for x:
10 x - 4 = 0
Add 4 to both sides:
10 x + (4 - 4) = 4
4 - 4 = 0:
10 x = 4
Divide both sides of 10 x = 4 by 10:
(10 x)/10 = 4/10
10/10 = 1:
x = 4/10
The gcd of 4 and 10 is 2, so 4/10 = (2×2)/(2×5) = 2/2×2/5 = 2/5:
Answer: x = 2/5
Estimate. Then find the difference 456,912 -37,800
Answers
I need help with example 4 plz
Answers
Answer:
a) [tex]y=1[/tex]
b) [tex]x=-3[/tex]
Step-by-step explanation:
Recall the forms of vertical and horizontal lines
Horizontal lines come in the form of [tex]y=0x+b[/tex], so the slope of the equation is zero. The value of b will be the y-value of the point that you're given.
This means that the equation for a would be y=1
Vertical lines come in the form of [tex]x=a[/tex]. For this line, the value of a would be equivalent to the x-value of the given point. Therefore, b. would be [tex]x=-3[/tex]
x/9 + 7 ≥ 10
A. x ≤ 83
B. x ≥ 27
C. x ≤ 27
D. x ≥ 83
Answers
Answer:
its B.x> 27
Step-by-step explanation:
For an apartment complex, the association collects $158,000 from all of its 211 residents. What is the average rent per capita for this apartment complex?
Answers
Answer:
$748.42
Step-by-step explanation:
The average rent per capita is used to measure the average rent paid by a group of people in an apartment or an area. The rent per capita estimates the average rent charged for each resident. It is ratio of the total rent paid by the people in the area to the number of residents. Hence:
The average rent per capita = Total rent / number of residents = $158000 / 211 residents = $748.42