width = (b - a)/n = (8 - 0)/4 = 2
2(f(0) + f(2) + f(4) + f(6))
2(-1 - 2.5 - 1.5 - 0.5)
2(-5.5)
-11
Is my answer C, -11? The question says four subintervals, so I used f(0), f(2), f(4), and f(6). I want to make sure that I am NOT supposed to be using f(8), because f(8) would give me a final answer of D. -13.5
Answers
Since it's asking for the left-endpoint Riemann Sum, you will only be using the top left point as the height for each of your four boxes, making -1, -2.5, -1.5, and -0.5 your heights. The bases are all the same length of 2. You don't include f(8) because you're not using right-endpoints, and that would also add another 5th box that isn't included in the 0 to 8 range.
Related Questions
Which of the following equations will produce the graph shown below?
Answers
x^2 = 4ay
so 4a = 4 * 2 = 8
Its A
Answer:
Option: A is the correct answer.
The equation of parabola is:
[tex]x^2=8y[/tex]
Step-by-step explanation:
Clearly we could observe that the parabola opens upward with vertex at (0,0) this means that the general equation of the parabola is:
[tex]x^2=4ay[/tex]
The focus of parabola is: (0,a) and equation of directrix is: y= -a
From the image provided to us we get:
a=2
and directrix is: y= -2
Hence, the equation of a parabola is:
[tex]x^2=8y[/tex]
Using the following diagram, solve for x.
Answers
Answer:
[tex]x=10.5[/tex]
Step-by-step explanation:
Use Thales' Theorem which says: If two lines, not necessarily parallel, are cut by a system of parallel lines, then the segments that result on one of the two lines are proportional to the corresponding segments obtained on the other.
Take a look at the picture I attached you, from it, It is true that:
[tex]\frac{AB}{A'B'} =\frac{BC}{B'C'}[/tex]
Hence:
[tex]\frac{12}{6} =\frac{21}{x}[/tex]
Solving for x:
[tex]x=\frac{21}{2} =10.5[/tex]
Suppose you have two hyperbolas that are the same except that the transverse axis and conjugate axis are switched. How does switching the axes affect the equations of the asymptotes for the two hyperbolas? Why?
Answers
assuming both hyperbolas at centered at the origin, the values for the numerator and denominator will switch, so that the slope of one is the reciprocal of the other's slope.
Final answer:
Switching the axes of two hyperbolas affects the equations of the asymptotes.
Explanation:
When the transverse axis and conjugate axis are switched in two hyperbolas, it affects the equations of the asymptotes. The equations of the asymptotes are determined by the ratio of the coefficients of x² and y² in the hyperbola equation. When the axes are switched, this ratio changes, resulting in different equations for the asymptotes.
For example, let's consider two hyperbolas with equations:
1) 8x² + 10xy - 3y² - 2x - 4y - 2 = 0
2) 8y² + 10xy - 3x² - 2x - 4y - 2 = 0
In the first hyperbola, the ratio of the coefficients of x² and y² is 8/(-3), which determines the equation of the asymptotes. In the second hyperbola, the ratio is (-3)/8, leading to different equations for the asymptotes.
The endpoints of the diameter of a circle are (-7, 3) and (5, 1). What is the center of the circle?
(-6, 2)
(-2, 4)
(-1, 2)
Answers
Answer: C. (-1, 2)
Step-by-step-explanation:
The center is the midpoint of the endpoints
→ [tex]\bigg(\dfrac{x_1+x_2}{2}[/tex] , [tex]\dfrac{y_1+y_2}{2}\bigg)[/tex]
→ [tex]\bigg(\dfrac{-7+5}{2}[/tex] , [tex]\dfrac{3+1}{2}\bigg)[/tex]
→ [tex]\bigg(\dfrac{-2}{2}[/tex] , [tex]\dfrac{4}{2}\bigg)[/tex]
→ (-1 , 2)
The midpoint is (-1, 2)
How many ounces of water should you drink for every 20 minutes of activity? 12?
Answers
simplify the expression 36^1/2
Answers
[tex] {36}^{ \frac{1}{2} } \\ = \sqrt{36} \\ = 6[/tex]
Answer is 6.
Hope this helps. - M
The picture below shows a container that Rene uses to freeze water: A cylinder is shown with base diameter of 6 centimeters and the height as 8 centimeters. What is the minimum number of identical containers that Rene would need to make 2000 cm3 of ice? (Use π = 3.14.)
Answers
The cylinder has base diameter of 6 centimeters and the height, [tex] h [/tex], of 8 centimeters.
Since the base diameter of the cylinder is 6 cm, therefore, it's radius, [tex] r [/tex], will be 3 cm.
Now, we know that the volume, [tex] V [/tex], of such a cylinder will be:
[tex] V=\pi r^2h [/tex]
Plugging in the values given we get the volume to be:
[tex] V=\pi(3)^2\times 8=3.14\times9\times8=226.08 [/tex] [tex] cm^3 [/tex]
Since Rene needs to make 2000 [tex] cm^3 [/tex] of ice and one cylinder's volume is 226.08 [tex] cm^3 [/tex], Rene would need...
[tex] \frac{2000}{226.08}\approx8.846\approx\boldsymbol{9} [/tex] such identical cylindrical containers.
Final answer:
To make 2000 cm3 of ice, Rene would need a minimum of 9 identical containers, given the volume of one container is 226.08 cm3.
Explanation:
To determine the number of identical cylindrical containers needed to make 2000 cm3 of ice, we must first calculate the volume of one container. Given that the diameter of the base is 6 centimeters, the radius (r) is half of that, which is 3 centimeters. We're also given the height (h) of 8 centimeters. We can use the formula for the volume of a cylinder, V = πr2h.
Plugging in the values, we get:
V = 3.14 × (3 cm)2 × 8 cm
which simplifies to V = 3.14 × 9 cm2 × 8 cm = 226.08 cm3.
Now we can divide the total volume of ice Rene wants to make by the volume of one container:
2000 cm3 ÷ 226.08 cm3 = approx 8.85.
Since Rene cannot use a fraction of a container, she would need a minimum of 9 identical containers to make at least 2000 cm3 of ice.
Would someone Please answer this question please will be thanked and also will pick brainly!! (please be honest)
Answers
d=√[(x-x1)²+(y-y1)²]
given the points: (-3,-8) and (10,-8)
thus:
d=√[(10-(-3))²+(-8-(-8))²]
d=√[(10+3)²+(8-8)²]
d=√(13²+0)
d=13 units
how do you solve #3?
Answers
We know, in a triangle, the three interior angles always add to 180° and in
an isosceles triangle are two equal angles.
Therefore in ΔEBA
[tex]m\angle AEB=\dfrac{180^o-108^o}{2}=\dfrac{72^o}{2}=36^o.[/tex]
What is the difference between the most expensive item and least expensive item on the menu, including 6% tax and 15% tip, to the nearest cent?
Imported Asset
Question options:
$4.23
$4.36
$5.45
$5.49
You have a $20 bill. You and your friend ordered two roast beef wraps, one soup, one fries, and two coffees. If the tax is 5% and the tip is 15%, what change did you receive back from the $20? Imported Asset
Question options:
$5.45
$1.45
$3.38
$2.54
Answers
Two roast beef wraps is $4.50 * 2 = $9.
One soup added to that is $11.25, plus the fries is $12.75.
Two coffees is $ 1.80, so your total meal cost by its self was $14.55.
Multiply that by 1.05 for tax to get $15.2775.
Multiply $14.55 by 0.15 to get $2.1825.
Add $15.2775 and $2.1825 to get $17.46.
Subtract $ 17.46 from $20 to get $2.54.
Part A:
The most expensive item on the menu is roast beef wrap at $4.50
6% tax on it becomes: [tex]4.50+(0.06\times4.50)=4.77[/tex] dollars
15% tip on it becomes: [tex]4.77+(0.15\times4.77)=5.485[/tex] dollars
The least expensive item on the menu is coffee at $0.90
6% tax on it becomes: [tex]0.90+(0.06\times0.90)=0.954[/tex] dollars
15% tip on it becomes: [tex]0.954+(0.15\times0.954)=1.097[/tex] dollars
So, the difference between roast beef wrap and coffee cost is :
[tex]5.485-1.097=4.388[/tex] dollars nearest to $4.36
Option B is the answer.
Part B:
You and your friend ordered two roast beef wraps, one soup, one fries, and two coffees.
Total becomes:
[tex](2\times4.50)+(2.25)+(1.50)+(2\times0.90)[/tex]
= [tex]9+2.25+1.50+1.8=14.55[/tex] dollars
Sales tax of 5% and 15% tip means 20% more on $14.55
[tex]14.55+(0.20\times14.55)=17.46[/tex] dollars
Change you will receive = [tex]20-17.46=2.54[/tex]dollars
Option D is the answer.
You spin the spinner shown. Find the sample space for this experiment.
Answers
1,2,3,4,5,6
Answer: 1,2,3,4,5,6
What is the next term? 100, 75, 56.25, _____
Answers
Each term is found by multiplying the previous term by 0.75:
100
100 * 0.75 = 75
75 * 0.75 = 56.25
56.25 * 0.75 = 42.1875
To survey a town about traffic concerns, Henry divided the town into eight regions and randomly chose 10 households from each region. What type of sample did she form?
Answers
Stratified sampling is a type of sampling method where the researcher divides the population into separate groups, called strata and then, a probability sample (often a simple random sample ) is drawn from each group.
Answer:
Simple Random answer
Step-by-step explanation:
It says that he divided town into eight regions and randomly chose 10. The sample she formed was the Simple Random Answer.
Construct the described data set. the entries in the data set cannot all be the same. the median and the mode are the same. what is the definition of median?
Answers
The first five terms of a sequence are 8, 9, 10, 11, and 12. How are the terms of the sequence generated?
A. by adding 7 to the term number
B. by multiplying the term number by 7
C. by adding 8 to the term number
D. by multiplying the term number by 8
Answers
Answer:
A
Step-by-step explanation:
n1=8. 7+1=8
n2=9. 7+2=9
n3=10. 7+3=10
n4=11. 7+4=11
n5=12. 7+5=12
Solve the inequality and find the solution set. y-6 ≥12
Answers
y - 6 + 6 ≥ 12 + 6
Eliminate the opposites on the left side.
y ≥ 12 + 6
Lastly,, add the numbers on the right side together to get your final answer.
y ≥ 18
Let me know if you have any further questions.
:)
Stella divides 12/8 on her calculator and gets 1.5. Assuming that Stella has not adjusted the calculator's settings, what do the displayed digits tell you about the answer?
A) Stella made an error.
B) The answer is exactly 1.5.
C) The calculator rounded the answer.
D) The calculator truncated the answer.
Answers
Stella divided 12/8.
If we divide 12 by 8, we get exactly 1.5.
Let us check given options one by one .
A) Stella made an error : Stella didn't made an error because it's just division of two numbers.
B) The answer is exactly 1.5. : On dividing 12 by 8, we get exactly 1.5, so this option is correct.
C) The calculator rounded the answer. : On dividing 12 by 8, we get exactly 1.5. So, no rounding is required.
D) The calculator truncated the answer. : On dividing 12 by 8, we get exactly 1.5. So, no truncation in the answer.
Therefore, correct option is B) The answer is exactly 1.5.
The quotient of two numbers is negative. It must be true that _____.
Answers
In the equation 2x - y = 4, the x-intercept is 2 and the y-intercept is -4.
Answers
Write a point-slope equation for the line that has slope 4 and passes through the point (11,7). Do not use parentheses on the y side.
Answers
If the markup formula is 40% of cost and selling price of an item is 4999 what is the cost
Answers
52 -п(2.5)^2
PLZ I NEED HELP IMEDIATELY
Answers
Eight car dealerships reported the number of cars they sold last month. Car Dealership Number of Cars Sold GMC 84 Chevrolet 81 Nissan 92 Toyota 92 Ford 95 Honda 94 Hyundai 80 Acura 72 What is the interquartile range of this set of data?
Answers
We first find the median. To do this, order the data from least to greatest and find the middle value:
72, 80, 81, 84, 92, 92, 94, 95
There are 8 data values. The median is between 84 and 92:
(84+92)/2 = 176/2 = 88
The median splits the data into two halves. The lower quartile is the median of the lower half; this is between 80 and 81:
(80+81)/2 = 161/2 = 80.5
The upper quartile is the median of the upper half; this is between 92 and 94:
(92+94)/2 = 186/2 = 93
The interquartile range is found by subtracting these:
93-80.5 = 12.5
Answer:
upper quartile is 93
lower quartile is 80.5
Step-by-step explanation:
I got a 100 on quiz
Given sin z=4/5 and cos x=3/5. What is the ratio for tan z? Enter your answer in the boxes as a fraction in simplest form.
Answers
You know this because the ratios above reveal that the opposite side is 4 and adjacent side is 3.
______________________________________________________
Explanation:
______________________________________________________
Note: tan z = (sin z/ cos z) ;
tan z = (4/5) / (3/5) ;
= [tex] \frac{4}{5} [/tex] * [tex] \frac{5}{3} [/tex] ;
Note: Both of the "5 ' s" cancel out to "1" ; since: "{5 ÷ 5 = 1 }" ;
And we rewrite as:
→ " [tex] \frac{4}{1} [/tex] * [tex] \frac{1}{3} [/tex] " ;
= [tex] \frac{(4*1)}{(1*3)} [/tex] ;
= " [tex] \frac{4}{3} [/tex] " .
_______________________________________________________
The answer is: " [tex] \frac{4}{3} [/tex] " .
_______________________________________________________
Simplify 7 + 4 · 5. 55 27 16 6
Answers
7 + 20
27
The second option is your answer.
7 + 4 x 5
Follow PEMDAS. In this case, you will multiply first before adding
4 x 5 = 20
20 + 7 = 27
27 is your answer
Note: PEMDAS
Parenthesis
Exponents (and roots)
Multiply
Divide
Add
Subtract
hope this helps
Tom bought 7 books. He has space only for 3 books in his bookshelf. In how many ways can he arrange the 3 books?
Answers
The required, Tom can arrange the 3 books in the combination of 35 different ways on his bookshelf.
The number of ways to choose a subset of 3 books from a set of 7 books can be calculated using the combination formula:
C(n, k) = n! / (k!(n-k)!)
Where n is the total number of items and k is the number of items we want to choose.
In this case, Tom wants to arrange 3 books out of a set of 7 books. Using the combination formula, we have:
C(7, 3) = 7! / (3!(7-3)!)
= 7! / (3!4!)
Calculating the factorials:
7! = 7 * 6 * 5 * 4 * 3 * 2 * 1 = 5040
3! = 3 * 2 * 1 = 6
4! = 4 * 3 * 2 * 1 = 24
Substituting these values into the formula:
C(7, 3) = 5040 / (6 * 24)
= 5040 / 144
= 35
Therefore, Tom can arrange the 3 books in 35 different ways on his bookshelf.
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A rectangular field is four times as long as it is wide. if the perimeter of the field is 340 yards, what are the field's dimensions
Answers
Then the length = 4x
Now the perimeter = 2 * length + 2 * width, so we have the equation:-
2*4x + 2x = 340
8x + 2x = 340
10x = 340
x = 34 yards = width
4x = length = 136
Answer: the width is 34 yards and length is 136 yards.
The required dimensions of the rectangular field are 34 yards by 136 yards.
What is the perimeter of the rectangle?The perimeter of a rectangle is defined as the addition of the lengths of the rectangle's four sides.
The perimeter of a rectangle = 2(L+W)
Where W is the width of the rectangle and L is the length of the rectangle
Let's represent the width of the field x. Since the field is four times as long as it is wide, the length of the field is 4x.
The perimeter of the field is the sum of all four sides of the field. This can be written as:
2(x) + 2(4x) = 340
Solving this equation for x, we find that the width of the field is x = 34 yards.
Since the length of the field is four times the width of the field, the length of the field is 4 × 34 = 136 yards.
Therefore, the width of the field is 34 yards, and the length of the field is 136 yards.
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Explain why the graph of quadratic function could not contain both a minimum vertex and a maximum vertex at the same time.
Your explanation should be 3-4 sentences and include at least 6 of the following words/phrase.
-parabola
- u-shaped graph
- vertex
- minimum
- maximum
- y-value of the vertex
- x-value of the vertex
- quadratic function
Answers
there are 8 hooks in a display of pens. Each hook can hold 3 packages of pens and there are 3 pens in each package. If the display is completely full, how many pens does it hold?
Answers
Using the following set of data, calculate the lower quartile, the upper quartile, and the interquartile range. 20, 22, 25, 28, 29, 30, 32, 33, 34.
Be sure to show your work for finding:
The lower quartile
The upper quartile
The interquartile range
PLs help
Answers
1st find the median, which would be the middle of the data set. Since there are 9 numbers the median would be the middle number of the set, this would give you the same amount of numbers on each side of it. The numbers to the left would be the lower and the numbers on the right would be the upper
so in the given data set the median is 29
the lower quartile is the median of the lower numbers, in this case the numbers below 29 are 20, 22 , 25, 28
since there is an even amount of numbers you need to add the 2 middle numbers together and divide by 2 to find the lower quartile so 22 +25 = 47, 47 / 2 = 23.5 this is the lower quartile
the upper quartile is found the same way, but using the upper numbers so in this case using 30, 32, 33 , 34
add the 2 middle numbers 32 +33 = 65 divide by 2 = 65/ 2 = 32.5 this is the upper quartile
the inter quartile range is subtracting the lower quartile from the upper quartile: 32.5 - 23.5 = 9
9 is the inter quartile range
According to the information we can infer that the Lower Quartile is 23.5, the upper quartile is 32,5, and the interquartile range is 9.
How to calculate these information?Arrange the data in ascending order: 20, 22, 25, 28, 29, 30, 32, 33, 34.
Calculate the position of the lower quartile using the formula: (n + 1) / 4, where n is the number of data points.
(9 + 1) / 4 = 10 / 4 = 2.5Since 2.5 falls between the 2nd and 3rd data points, you need to find the average of these two values:
(22 + 25) / 2 = 47 / 2 = 23.5Upper Quartile (Q3):
Calculate the position of the upper quartile using the formula: 3 * (n + 1) / 4.
3 * (9 + 1) / 4 = 30 / 4 = 7.5Since 7.5 falls between the 7th and 8th data points, find the average of these two values:
(32 + 33) / 2 = 65 / 2 = 32.5Interquartile Range (IQR):
Calculate the IQR by subtracting Q1 from Q3:
IQR = Q3 - Q1 = 32.5 - 23.5 = 9.So, the lower quartile (Q1) is 23.5, the upper quartile (Q3) is 32.5, and the interquartile range (IQR) is 9.
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