Answers
d. x = 9.6
[tex]\bold{EXPLANATIONS:}[/tex]
Related Questions
Use the three functions shown. 1. f(x)=x² II. f(x)=√x III. f(x) = ln x For which of the functions, if any, is a trapezoidal approximation for the area under the curve y = f(x) over the interval [1, 4] with 3 equal subintervals less than the midpoint approximation? none of the functions O I only II and III only all of the functions
Answers
II and III only
We split up the integration interval [1, 4] into 3 equally-spaced subintervals of length (4 - 1)/3 = 1 :
[1, 2], [2, 3], [3, 4]
The area over each subinterval [L, R] is either approximated by a trapezoid, whose area will be
1 • (f(L) + f(R))/2
or by a rectangle with height f((L + R)/2) and hence area
1 • f((L + R)/2)
For f(x) = x², the area under f(x) over [1, 4] is approximated by
• using trapezoids (T) :
[tex]\displaystyle \int_1^4 x^2 \, dx \approx \frac{4-1}{2\times3} (1^2 + 2\times2^2 + 2\times3^2 + 4^2) = \frac{43}2 = \frac{86}4[/tex]
• using midpoints (M) :
[tex]\displaystyle \int_1^4 x^2 \, dx \approx \frac{4-1}3 \left(\left(\frac32\right)^2 + \left(\frac52\right)^2 + \left(\frac72\right)^2\right) = \frac{83}4[/tex]
so T > M. (This eliminates "I only" and "all of the functions".)
For f(x) = √x, the area is approximated by
• T :
[tex]\displaystyle \int_1^4 \sqrt x \, dx \approx \frac{4-1}{2\times3} (\sqrt1 + 2\sqrt2 + 2\sqrt3 + \sqrt4) \approx 4.646[/tex]
• M :
[tex]\displaystyle \int_1^4 \sqrt x\, dx \approx \frac{4-1}3 \left(\sqrt{\frac32} + \sqrt{\frac52} + \sqrt{\frac72}\right) \approx 4.677[/tex]
so T < M. (This eliminates "none of the functions".)
What is the value of the expression below when a = 4?
6a + 7
A. 31
B. 41
C. 53
D. 71
Answers
So if a = 4
Then in the equation
6a + 7
We substitute a for 4 which gets
6(4) + 7
24 + 7
31
There for the answer is A
Hope this helps!
Which compound inequality has a solution set of all real numbers?
Question 5 options:
a) x > -2 or x < 1
b) x < -1 and x > 2
c) x < -1 and x > 2
d) x < -3 or x > -2
Answers
Answer:
If the number on the other side of the inequality sign is negative
Step-by-step explanation:
I just know okay
Pls help me and show work! Thank you <3
Answers
Answer: 27
Step-by-step explanation:
By the same-side interior angles theorem, [tex]x+72+3x=180 \longrightarrow x=\boxed{27}[/tex]
Ronald's bill at the end of his lunch was $20.00. Using a proportion, determine the amount of his bill that he must leave for a 19% tip.
Answers
Answer:
23.80$
Step-by-step explanation:
[tex]\frac{20}{x} =\frac{100percent}{19percent}[/tex]
X = (20 × 19) ÷ 100
X =380 ÷ 100
X = 3.8$
20.00+ 3.8=
23.80
claire is considering in a new business
Answers
what is the y intercept of F(x) = 1000(2)[tex]x^{2}[/tex]
Answers
Answer:
The y-intercept is 0
Step-by-step explanation:
y = mx + b
b is y-intercept
There are no constants in this equation
PLEASE HELP ILL GIVE BRAINLIESTTTTTT
Answers
Step-by-step explanation:
Explaination: So first of all um what I am going to do is I need to find the area of this semicircle. So the area of the semicircle, I'm going to use pi times the radius squared and then divided by two. So I'm using the formula of the area of a circle and then I'm dividing it by two because it's half of a circle. And then I'm going to add that to the area of a triangle which is base times height divided by two.
Hope it helps you
Suppose a random sample of biweekly snowfalls in the pacific northwest has a sample mean of x¯=22.2 inches, with a sample standard deviation of s=3.5 inches. Since snowfall amounts in this area are generally symmetric and bell-shaped, we can apply the Empirical Rule.
Between what two amounts are approximate 99.7% of the data?
Answers
Using the Empirical Rule, it is found that 99.7% of the data will be between 11.7 and 32.7 inches.
What does the Empirical Rule state?It states that, for a normally distributed random variable:
Approximately 68% of the measures are within 1 standard deviation of the mean.Approximately 95% of the measures are within 2 standard deviations of the mean.Approximately 99.7% of the measures are within 3 standard deviations of the mean.In this problem, considering the mean and the standard deviation of the data-set, the bounds between which 99.7% of the data-set are given by:
22.2 - 3 x 3.5 = 11.7 inches.22.2 + 3 x 3.5 = 32.7 inches.More can be learned about the Empirical Rule at https://brainly.com/question/24537145
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Answer: 11.7 & 32.7
Step-by-step explanation:
Approximately $99.7\%$ of the snowfall amounts are between 1$$ inches and 2$$ inches.
Correct answers:
1: 11.7 2: 32.7
The Empirical Rule states that approximately 99.7% of the data is within 3 standard deviations of the mean. In terms of the sample mean x¯ and sample standard deviation s, that is between x¯−3s and x¯+3s.
The value 3 standard deviations below the mean is
x¯−3s=22.2−3(3.5)=11.7.
The value 3 standard deviations above the mean is
x¯+3s=22.2+3(3.5)=32.7.
So by the Empirical Rule, we can say that approximately 99.7% of the snowfall amounts are between 11.7 and 32.7 inches.
The dot plots below show the weights of the players of two teams:
Team C
120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140
Weight (pounds)
Team D
120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140
Weight (pounds)
Based on visual inspection of the dot plots, which team appears to have the larger
mean weight? (5 points)
1. Not enough information is available to draw a conclusion
2. Both groups are similar
3. Team C
4. Team D
Answers
The value of the mean of team C and team D will be equal. Then the correct option is B.
What is Mean?The average of a group of numbers is simply defined as the mean. In statistics, the mean is regarded as one of the indicators of central tendency. Arithmetic mean is a term used to describe the average. It's the percentage of the actual number of observations to the sum of the observations.
The dot plots below show the weights of the players of the two teams:
Team C
120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140. Weight (pounds)
Team D
120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140. Weight (pounds)
Then the mean of team C will be
[tex]\mu _c = \dfrac{120 +121 +122 +123 +124 +.....+139 +140}{21}\\\\\mu _c = \dfrac{2730}{21}\\\\\mu _c = 130[/tex]
Then the mean of team D will be
[tex]\mu _d = \dfrac{120 +121 +122 +123 +124 +.....+139 +140}{21}\\\\\mu _d = \dfrac{2730}{21}\\\\\mu _d = 130[/tex]
Then the value of the mean of team C and team D will be equal.
More about the mean link is given below.
https://brainly.com/question/521501
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©
Bluegrass was develope from tradition
Simple / repetitive cuord proggression the
,
the country Acoustic instrumen
7. What wast the social significance of cover songs in early
What was the significance of cover songs in early rock music
Answers
Find the area of the figure below, formed from a triangle and a rectangle, in square centimeters.
Answers
Answer:
44 square cm
Step-by-step explanation:
Total Area = Area of triangle + Area of rectangle
= (1/2 * base * height) + (Length*Width)
= (1/2 × 8 × 6) + ( 10 × 2)
= 24 + 20
= 44 square cm
1. The area of Alabama is 51,718 square miles and its population is 4,779,736. The area of Missoun is 69,709 square miles and its population is 5,988,927. The average state population density is 87,4 people per square mile. How do the population densities of Alabama and Missouri compare to the national average?
Answers
Answer:
Alabama is greater than the national average Missouri is less than national average
Step-by-step explanation:
Find the pop densityof each state = people / mi^2
Alabama 4779736 / 51718 = 92.4 people per square mile
Missouri 5988927 / 69709 = 85.9 people per square mile
When 12 is multiplied by a fraction less than one, which of the following is true about the product.
Answers
(I don't know what are the answer choices, but I'm sure this should be one of the choices:)
Answer:
The product of 12 multiplied with a fraction less than 1 will be less than 12 itself.
Step-by-step explanation:
This is true because if you multiply 12 by (for example) 1/2, then your answer is going to be 6 since 12x1=12 itself, and 12x0=0. So that's why, if it's less than 1, then the product is going to be less than 12 itself.
Hence, one of the answer choices can be something like: The product will be less than 12 itselfWhat is the solution of the system of equations shown in the following graph? Please help
Answers
Answer:
aedi on
Step-by-step explanation:
Why is a recipe a good example of procedural writing? Check all that apply.
options:
A. Making a recipe requires materials.
B. Recipes have a method, or a sequence of steps.
C. Making a recipe requires experience.
D. All recipes have a goal.
E. Recipes are fun to make.
F. Users can determine whether the recipe was successful.
Answers
Answer: A, B, D, F
Explanation:
Edge 2022
Answer:
A, B , D, F
Step-by-step explanation:
These are a good example of procedural writing
Hope it helped ! Mark me as Brainliest pls !
What is the area of the base of the cone below? A cone with height 12 feet and volume 90 feet cubed. 2.5 feet squared 4 feet squared 22.5 feet squared 26 feet squared
Answers
Answer:
its C or 22.5
Step-by-step explanation:
Im doing the test right now
Answer:
22.5
Step-by-step explanation:
Fred bought 3 shirts and a tie. He remembers each shirt was $25, and the total cost was $85. How much was the tie?
Answers
Answer:
The tie is $10
Step-by-step explanation:
3 shirts were bought, so 25*3 is 75. The total cost is $85, you take 85 and subtract 75 from it and you get the cost of the tie, $10.
Please help the distance formula
Answers
Answer:
7.8
Step-by-step explanation:
distance formula : [tex]d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]
where the x and y values are derived from the given points
here the given points are (11,3) and (6,9)
assigning variables
(x1,y1) = (11,3) so x1 = 11 and y1 = 3
(x2,y2) = (6,9) so x2 = 6 and y2 = 9
plugging in values into formula
recall formula [tex]d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]
==> plug in x1 = 11 , y1 = 3 , x2 = 6 and y2 = 9
[tex]d=\sqrt{(6-11)^2+(9-3)^2}[/tex]
==> subtract values in parenthesis
[tex]d=\sqrt{(-5)^2+(6)^2}[/tex]
==> evaluate exponents
[tex]d=\sqrt{25+36}[/tex]
==> add 25 and 36
[tex]d=\sqrt{61}=7.8[/tex] ( approximately )
£6846 is shared equally between 7 people. How much does each person get?
Answers
Answer: Each person gets £978
Step-by-step explanation: £6846 divided by 7 is £978
PLEASE HELP ME !!!!
Answers
Answer:
D
Step-by-step explanation:
Exterior means outside which means it has to be one of the angles outside the triangle.
Options A, B, and C have angles inside the triangle.
Option D is the only angle outside the triangle
help i need a answer asap!!
Answers
Answer: One angle measures more than 90 degrees
Step-by-step explanation:
Number 31 please help
Answers
Step-by-step explanation:
you should respond : "you are right" !
please help me im stuck
Answers
Answer: The mean is 6, mean also means the constence.
Step-by-step explanation:
6 is able to go into 10,20,30,40. But I maybe wrong, sorry if I am.
need help fast! 100 POINTS
Answers
Answer:
100 points ??? I see 5 points :]
Orlando is mixing nuts and cereal squares to make a party mix. Nuts sell for $7 a pound and cereal squares sell for $4 a pound. If Orlando wants to make 30 pounds of party mix at a cost of $6.50 a pound, how many pounds of nuts and how many pounds of cereal squares should he use?
Answers
Answer:
5 lbs cereal squares.
25 Ibs nuts.
Step-by-step explanation:
Let x be the weight of nuts in pounds and y be the weight of cereal squares in pounds.
Total weight of the party mix is 30 pounds.
[tex]x+y=30[/tex] ..... (1)
It is given that,
Cost of nuts = $7 per pound
Cost of cereal = $4 per pound
The cost of mix = $6.50 per pound.
[tex]7x+4y=6.50*30[/tex]
[tex]7x+4y=195[/tex] ..... (2)
Substitute the value of x in equation (2) from equation (1).
[tex]7(30-y)+4y=195[/tex]
[tex]210-7y+4y=195[/tex]
[tex]-3y=195-210[/tex]
[tex]-3y=-15[/tex]
Divide both sides by -3.
[tex]y=5[/tex]
Substitute y=5 in equation (1).
[tex]x+5=30[/tex]
Subtract both sides by 5.
[tex]x=30-5[/tex]
[tex]x=25[/tex]
Therefore, he use 25 lbs of nuts and 5 lbs cereal squares for party mix.
Joe can paint 2 yards of fence for $48.60. What is the price per foot.
Answers
Answer:
the price per foot = $8,1
Step-by-step explanation:
Note : 2 yards = 2 × 3 = 6 foot
Then
Joe can paint 6 foots of fence for $48.60
Then
Joe can paint 1 foot of fence for 48.60 ÷ 6 = $8,1
Please help me solve this trig problem!
Answers
Answer:
the awnser I got is 279
Step-by-step explanation:
if it's wrong I'm so sorry I'm not the best at math >-<
Answer: 105.66 ft
Step-by-step explanation:
Elijah’s home is 1.1km from the library
His journey from his home to the library, including a 2 minute stop on the way, is shown on the
graph below.
How much faster was Elijah travelling before his stop than afterwards?
Give your answer in km/h.
Answers
Elijah was travelling before his stop than afterwards with speed of 0.5 km/h.
What is formula to calculate speed or velocity?To solve for distance use the formula for distance d = vt, or distance equals speed times time. Rate and speed are similar since they both represent some distance per unit time like miles per hour or kilometers per hour.
Before his stop, the velocity =[tex]\frac{0.4km}{0.1 h}[/tex]
= 4 km/h
After his stop, the velocity =[tex]\frac{2.7km}{2.2 h}[/tex]
= 3.5 km/h
So, 4-3.5 km/h= 0.5 km/h
Elijah was travelling before his stop than afterwards with speed of 0.5 km/h
Learn more about speed and velocity here:
https://brainly.com/question/13271165
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What are the values of mode and median in the following set of numbers? 1,3,3,6,6,5,4,3,1,1,2 Mode: 1, 2, Median: 2 Mode: 1,3, Median: 3 Mode: 2,3, Median: 2 Mode: 1,3, Median: 2.5
Answers
[tex]1 \: 3 \: 3 \: 6 \: 6 \: 5 \: 4 \: 3 \: 1 \: 1 \: 2[/tex]
to find:the mode and median of the given numbers set.
solution:mode:the most frequently occurred number.
[tex]mode = 1 \: and \: 3[/tex]
median:first arrange all the numbers in either decending or ascending order, then find the number in the middle.
[tex]1 \: 1 \: 1 \: 2 \: 3 \: 3 \: 3 \: 4 \: 5 \: 6 \: 6[/tex]
[tex]median = 3[/tex]
hence, the median of the following data set is 3 and the mode is 1 and 3