Answer:
Cone: h = [tex]3\frac{V}{\pi r^{2} }[/tex]
Cylinder: h = [tex]\frac{V}{\pi r^{2} }[/tex]
Step-by-step explanation:
- the formula you described is not the formula for the volume of a cone as it is V = [tex]\pi rx^{2} \frac{h}{3}[/tex]
- to find the height you simply rearrange the formula, so the formula to calculate the height of the cone is:
- h = [tex]3\frac{V}{\pi r^{2} }[/tex]
- based on the formula you described, it is closer to a cylinder and the formula for the volume of a cylinder is: V = [tex]\pi r^{2} h[/tex]
- once again, to find the height you simply rearrange the formula, so the formula to calculate the height of the cone is:
- h = [tex]\frac{V}{\pi r^{2} }[/tex]
hope this helps :)
Calculate the amount of money you'll have at the end of the indicated time period.
You invest $3000 in an account that pays simple interest of 3% for 10 years.
The amount of money you'll have at the end of 10 years is
The amount of money you'll have at the end of 10 years is $3900.
Given that, P=$3000, R=3% and T=10 years.
What is the formula to find the simple interest?The formula to find the simple interest is [tex]Interest=\frac{P \times T \times R}{100}[/tex].
Now, simple interest [tex]=\frac{3000 \times 10 \times 3}{100}=\$900[/tex].
Amount=Simple Interest+Principal
=900+3000=$3900
Therefore, the amount of money you'll have at the end of 10 years is $3900.
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Which compound inequality represents the range for the skull size of raccoons? Answer choices are rounded to the nearest hundredth.
16 ≤ 1.02x − 31.5 ≤ 22
The range for the following inequality rounded to nearest hundredth is 46.57≤x≤52.45
In mathematics, an inequality is a relation that holds between two values when they are different. The notation a ≠ b means that a is not equal to b. It does not say that one is greater than the other, or even that they can be compared in size . Inequality are the sign which assign the great and less of amount between to numbers,`<. .>
Let's solve your inequality step-by-step.
16≤1.02x−31.5≤22
Add 31.5 to all parts:
16+31.5≤1.02x−31.5+31.5≤22+31.5
Adding we get:
47.5≤1.02x≤53.5
Divide all parts by 1.02:
47.5/1.02≤1.02x/1.02≤53.5/1.02
Dividing we get:
46.568627≤x≤52.45098
Rounding it to nearest hundredth we get
46.57≤x≤52.45
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help a girl out please!
Find the absolute maximum and absolute minimum values of f on the given interval.
f(x) = 4x³ - 18x² - 48x + 7, [-2, 5]
The first thing we need to do is evaluate the function at its endpoints.
[tex]f(-2)=-1\\\\f(5)=-183[/tex]
Then, we need to find the critical points to find if the stationary points give the absolute min/max values.
[tex]f'(x)=12x^2 - 36x-48=0\\\\x^2 - 3x-4=0\\\\(x-4)(x+1)=0\\ \\ x=-1, 4[/tex]
[tex]f(-1)=33\\\\f(4)=-217[/tex]
So, the absolute maximum is 33 and the absolute minimum is -217
Volume and surface area
Answer:
The 1st one is 540π
The 2nd one is 1696.46
Step-by-step explanation:
To find the volume of a cylinder, you do the following:
[tex](r)^2\pi \times h[/tex]
Where r represents the radius of the circle and h represents the height. Because it's multiplication, we can change it to:
[tex]r^2\times h \times \pi[/tex]
So since the radius is 6, 6^2 is 36. Then we multiply by 15, to get 540. Then now since we don't need to multiply the pi, you just leave it as 540π.
For the second one, multiply 540 by pi to get the answer, then round it to the nearest hudredth to get 1696.46.
a. Missing x:-6 Missing y:22 c. Missing x:-7 Missing y:20 b. Missing x:-7 Missing y:22 d. Missing x:-6 Missing y:21
This exercise is about Linear Functions. From the values given, we can state that:
The value of missing x = 6The value of missing y = 21 (Option D)What is the explanation for the above?Given that the table represents a linear function, so the function is a straight line.
Taking two points
(-12, 17)
(-10, 19)
To determine the slope between (-12, 17) and (-10, 19), we need to use the formula:
Slope = (y2-y1)/(x2 - x1)
Recall that:
(x1, y1) = (-12, 17); and
(x2, y2) = (-10, 19)
m = 19 -17/-10 -17
m = 1
Leveraging the point-slope to create the linear equation, we have:
y-y1 = m(x-x1)
where m is the slope of the line and (x₁, y₁) is the point substituting the values m = 1 and the point (-12, 17). Hence, we have:
y-y1 = m(x-x1)
→ y-17 = 1 (x-(-12))
→ y - 17 = x +12
y = x + 12 + 17
y = x + 29 ..................................Linear Equation
Next, we substitute x = -8 into the Linear Equation
y = (-8) + 29
y = 21
Hence, the missing y = 21; and
The missing x = -8
If we substitute y = 23 into the equation, we have:
y = x + 29
23 = x + 29
x = 29 - 23
x = 6
Thus, when the value of y = 23, the missing x is = 6
Conclusively,
The value of missing x = 6
The value of missing y = 21
Full Question
Determine any data values that are missing from the table, assuming that the data represent a linear function.
X Ix ly |-12 17 -10 19 -8 23
a. Missing x:-6 Missing y:22
b. Missing x:-7 Missing y:22
c. Missing x:-7 Missing y:20
d. Missing x:-6 Missing y:21
Please select the best answer from the choices provided.
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n the derivation of the formula for the volume of a cone, the volume of the cone is calculated to be StartFraction pi Over 4 EndFraction times the volume of the pyramid that it fits inside. A cone is inside of a pyramid with a square base. The cone has a height of h and a radius r. The pyramid has a base edge length of 2 r. Which statement best describes where the StartFraction pi Over 4 EndFraction comes from in the formula derivation? It is the ratio of the area of the square to the area of the circle from a cross section. It is the ratio of the area of the circle to the area of the square from a cross section. It is the difference of the area of the square and the area of the circle from a cross section. It is the sum of the area of the square and the area of the circle from a cross section.
The fraction π/4 comes from the the ratio of the area of the circle to the area of the square from a cross section.
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
Given that:
Volume of cone = (π/4) * volume of pyramid it fits inside
Ratio of area of cone to area of square = πr²/(2r)² = πr²/4r² = π/4
The fraction π/4 comes from the the ratio of the area of the circle to the area of the square from a cross section.
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(B.) It is the ratio of the area of the circle to the area of the square from a cross section.
A test requires that you answer first Part A and then either Part B or Part C. Part A consists of 6 true-false questions, Part B consists of 6 multiple-choice questions with one correct answer out of five, and Part C consists of 3 multiple-choice questions with one correct answer out of six. How many different completed answer sheets are possible?
Answer:
1,013,824 different completed answer sheets are possible
Step-by-step explanation:
So let's start with part A. There is 6 questions which have 2 options, because it's a true-false question. With the first question, you can choose 2 options, true or false, from there you can choose true or false. I've attached a diagram which further illustrates this. So as you can see as you answer each question, the amount of combinations get's multiplied by 2, or in other words, the amount of combinations can be expressed as: [tex]2^n[/tex] where n=amount of questions. Since there are 6, there are [tex]2^6[/tex] combinations which is 64 total combinations by the time you answer all 6 questions.
So now from here you can choose either part B or C, and I'm assuming you can't do both, you chose one. So we can treat them as completely separate scenarios, and then after that add the amount of combinations from doing part A/B and part A/C.
So let's start with the scenario that you do part B after part A. part B consists of 6 multiply choice questions and it has 5 options per question. If you remember, the first question, you had 2 initial options, and for each of those 2 initial options, you had 2 more (true/false), then you had 4, then for each of those 4 you had 2, then you had 8. So this relationship can generally be treated as: [tex]a^n[/tex] where a = amount of options, and n = amount of questions. This is because for each question, you're going to have a options, so the first question is going to be "a" amount of combinations, then the second question, for each combination which is currently a, you're going to have "a" combinations, so now you have a*a combinations and so on... So here you're going to have: [tex]5^6[/tex] choices. which is 15,625. But remember, this is after doing part A. So this means you can extend these amount of combinations to the 64 amount of combinations. I attached another graph to help you understand this. This means you will have 15,625 * 64 combinations which is 1,000,000 combinations if you chose part A then part B
Now let's look at the scenario you chose part A then part C. This isn't an extension onto part B, so we can see them as two separate scenarios. So like two completely different graphs. So for part C, we can use the general equation we used in the previous question: [tex]a^n[/tex]. In this case there are 3 questions, and 6 options, so the amount of combinations is: [tex]6^3[/tex] which is 216, now for reasons explained in the previous paragraph, you need to multiply this by the 64 combinations from part A. This gives you 216 * 64 = 13,824.
So now we calculated part A/B combinations = 1,000,000
and part A/C combinations = 13,824
So adding these together you get: 1,013,824 combinations
Determine the most convenient method to graph the following line.
3x+2y=12
Select the correct answer below:
Vertical Line
Horizontal Line
Intercepts
Slope-intercept
Step-by-step explanation:
3x + 2y = 12
2y = 12 - 3x
y = 6 - 3/2 x
so, it is a regular line, not horizontal, not vertical.
the easiest way to graph it is to find the 2 intercepts at the x- and at the y-axis (setting x = 0 gives us the y value for the y-axis intercept, setting y = 0 gives us the x value for the x-axis intercept).
then use a ruler and draw a line through both points and well beyond these 2 points.
x = 0
3×0 + 2y = 12
2y = 12
y = 6
point (0, 6)
y = 0
3x + 2×0 = 12
3x = 12
x = 4
point (4, 0)
QUICK PLEASE. A person invest $2000 at 4.5% simple interest for two years. make sure to show all your work.
a) What would the interest earned be after two years?
b) What would the total amount be after two years?
The total amount after 2 years is $2180
How to determine the interest?The given parameters are:
Principal, P =$2000
Rate, r =4.5%
The interest in 2 years is calculated as:
I = PRT
So, we have:
I = 2000 * 4.5% * 2
Evaluate
I = 180
Hence, the interest after 2 years is $180
How to determine the total amount?This is calculated as:
Amount = P + I
So, we have:
Amount = $2000 + $180
Evaluate
Amount = $2180
Hence, the total amount after 2 years is $2180
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Suppose that, in 2006, Norway produced 17.699 million computers. The total world production that year totaled 127 million computers. What percent of the world's total production of computers is contributed by Norway? Round your answer to the nearest tenth of a percent.
Answer:
about 13.9%
Step-by-step explanation:
[tex] \frac{17.699}{127} (100\%) = 13.9\%[/tex]
y = -x^2+6x+5 Rewrite the following quadratic function in vertex form. Then, determine if it has a maximum or minimum and say what that value is.
When asked to find the sum of two mixed numbers with different
denominators, you should
before you add.
о A. find the difference
O B. find a common denominator
OC. round each fraction
The solution to When asked to find the sum of two mixed numbers with different denominators, you should before you add, find a common denominator.
Addition of fractionmixed numbers are; 1 2/5, 2 1/3, 4, 4/5Numerator refers to the upper or top value of a fraction.Denominator refers to the bottom or down value of a fraction.For instance,
4 1/3 + 3 2/5
= 13/3 + 17/5
find common denominator
= (65+51) / 15
= 116/15
= 7 11/15
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What is the volume of the cylinder below?
OA. 288 units³
B. 216 units3
C. 324 units3
D. 432 units3
Answer:
288π
Step-by-step explanation:
Volume of a cylinder = πr²h
r = radius = 6
h = height = 8
Volume = πr²h
Volume = π × 6² × 8
Volume = π × 36 × 8
Volume = 288π
Can you help me to create a histogram graph with the following data please?
The range data is 55
The attached graph represents a histogram that has a range of 55
How to create the histogram?The range is given as:
Range = 55
The range is calculated as:
Range = Maximum - Minimum
So, we have:
Maximum - Minimum = 55
Rewrite as:
Maximum = Minimum + 55
Let the minimum be 10.
So, we have:
Maximum = 10 + 55
Evaluate
Maximum = 65
The following dataset can be used to create the histogram
Score Frequency
10 2
15 5
45 3
65 1
This is so because it has a range of 55
See attachment for the histogram
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Unit 6, Lesson 15
Practice Problems
1. a. Consider the inequality .
i. Predict which values of will make the inequality true.
ii. Complete the table to check your prediction.
-4 -3 -2 -1 0 1 2 3 4
Based on the calculations, we can predict that 2, 3, 4, 5, etc., will make the inequality true.
How to solve an inequality?In Mathematics, an inequality can be used to show the relationship between two (2) or more integers and variables in an equation.
Evaluating the given inequality, we have:
-1 ≤ x/2
-2 ≤ x
x ≥ 2.
Therefore, we can predict that 2, 3, 4, 5, etc., will make the inequality true.
Next, we would complete the table to check our prediction:
x -4 -3 -2 -1 0 1 2 3 4
x/2 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2
When x = -2:
-1 ≤ -2 (false)
When x = 2:
-1 ≤ 1 (true)
When x = 3:
-1 ≤ 3 (true)
When x = 4:
-1 ≤ 4 (true)
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Complete Question:
1. a. Consider the inequality -1 ≤ x/2.
i. Predict which values of will make the inequality true.
ii. Complete the table to check your prediction.
Which of the following is a parent function?
O A. 1(x)=2*3^x
OB. 1(x)=x^4 +3
O C. 1(x)=e^x
OD. 1(x)=2x
The answer to this question is choice C
Reflect (4, 1) over the y-axis. Then translate the result to the right 2 units. What are the coordinates of the final point?
Answer:
Step-by-step explanation:(-4, -1) --> (4, -1). Translating two units to the right means adding two units to the x-coordinate: (4, -1) --> (6, -1). This is our final point
Middle School Math - Problem Solving and Discovery (7-8)
Directions: Use a systemic list to solve the following problems. Make sure to show all of your work!
1. Rides Tickets: Marcy had $10.00 to spend at the state fair. She spent all of it on the ride tickets. The
rides cost either $0.50, $1.00, or $1.25 each. What are all the possible ways in which she spent her
money?
Answer:
10
Step-by-step explanation:
i add the n subtrasct
the i east
foodooodododo]
999937
3;33
25. What is the value of the function f(x) = 3(4- x) when x = 7?
Answer:
-9
Step-by-step explanation:
1. f(x) = 3(4-x)
2. f(x) = 3(4-7)
3. f(x) = 3(-3)
4. f(x) = -9
[tex]\Large\Box\underline{\textsf{A. What is Asked}}[/tex]
What is the value of the function f(x)=3(4-x) when x=7?
[tex]\Large\Box\underline{\textsf{This problem has been solved!}}[/tex]
[tex]\boxed{\begin{minipage}{4cm} \textsf{Put in 7 for x,}\\\textbf{since we're given} \\ that x = 7. \\ \blacksquare^\bigstar\blacksquare \end{minipage}}[/tex]
[tex]\bf{\Box\!\!\!\!\!\bullet f(x)=3(4-7)=3(-3)=\overbrace{-9}}\xleftarrow{ANSWER}[/tex]
[tex]\cline{1-2}[/tex]
[tex]\bf{Result:}[/tex]
[tex]\bf{=-9}[/tex]
[tex]\LARGE\boxed{\bf{aesthetic\not1\theta\ell}}[/tex]
Find the height of the triangle by applying formulas for the area of a triangle and your knowledge about triangles.
This is a triangle. side a has a length of 12 inches. side b has a length of 12 inches. side c has a length of 8 inches. The altitude to side c has a length of X inches.
Using the Pythagorean Theorem, the altitude to side c has a length of 11.3 inches.
What is the Pythagorean Theorem?The Pythagorean Theorem relates the length of the legs [tex]l_1[/tex] and [tex]l_2[/tex] of a right triangle with the length of the hypotenuse h, according to the following equation:
[tex]h^2 = l_1^2 + l_2^2[/tex]
To find the altitude relative to side c, we bisect this side, which cuts it's length into half(now of 4 inches), forming a right triangle in which:
The altitude is the other leg.The side of 12 inches is the hypotenuse.Hence:
[tex]x^2 + 4^2 = 12^2[/tex]
[tex]x = \sqrt{12^2 - 4^2}[/tex]
x = 11.3 inches.
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Hola
Select the correct answer from each drop-down menu.
Identify the key features of these functions:
f(x) = 3(x + 5)² - 10
g(x) = -4x² + 3x - 1
h(x) = -0.25(x + 3)(x - 1)
The vertex of f is at
The y-intercept of g is
"The zeros of h are at
▼
and
Submit
A balanced dime is tossed three times. The possible outcomes are represented in the table. Complete parts (a) through (d) below.
HHH
HTH
THH
TTH
HHT
HTT
THT
TTT
a. Find the probability that all three of the tosses come up heads.
The probability that all three of the tosses come up heads is 1/8.
What is the probability?Probability determines the odds that an event would happen. The odds of the event happening lies between 0 and 1.
The probability that all three of the tosses come up heads = number of tosses in which the three dimes come heads up / total number of possible outcomes
= 1/8
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What is the value of x in the triangle
Answer:
[tex]5\sqrt{3}[/tex]
Step-by-step explanation:
the sides of a 30 60 90 triangle are x, 2x, and [tex]x\sqrt{3}[/tex], with [tex]x\sqrt{3}[/tex] being opposite to the 60 degree angle, and x being adjacent to the 60 degree angle. If [tex]x\sqrt{3}[/tex] = 15 (as given from the image), you can calculate x to be [tex]5\sqrt{3}[/tex].
For the given functions f and g find f•g and state it’s domain
f(x) = 3x - 6; g(x) = 8x +4
The function is (c) (f.g)(x) = 24x^2 - 36x - 24; domain of all set of real numbers
How to determine the composite functions?The given parameters are:
f(x) = 3x - 6; g(x) = 8x +4
The composite function is calculated as:
(f.g)(x) = f(x) * g(x)
This gives
(f.g)(x) = (3x - 6) * (8x + 4)
Expand
(f.g)(x) = 24x^2 + 12x - 48x - 24
Evaluate the difference
(f.g)(x) = 24x^2 - 36x - 24
The above function is a quadratic function;
Quadratic functions have a domain of all set of real numbers
Hence, the function is (c) (f.g)(x) = 24x^2 - 36x - 24; domain of all set of real numbers
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In the following figure. Find the length of the unknown side of the triangle. Give an exact answer then an
answer correct to 5 decimal places.
Answer:
Step-by-step explanation:
Formula
c^2 = a^2 + b^2
Givens
a = 3b = 8c = ?Solution
c^2 = 3^2 + 8^2 Substitute givens
c^2 = 9 + 64 Combine
c^2 = 73 Take the square root of both sides
√c^2 = √73
c = √73 \
Exact answer
c = √73 73 is prime. It will break down no further
Approximate answer
c = 8.54400 Both zeros must be entered
Find the equation of the graph
y=[tex]\sqrt{x}[/tex]
y=3[tex]\sqrt{x+1}[/tex]
y=[tex]\sqrt{x+7}[/tex]
y=[tex]\sqrt{x-7}[/tex]
Answer:
c
Step-by-step explanation:
y=[tex]\sqrt{x+7}[/tex]
Geometry
Does anyone know how to do this?
For all rectangles, the area is the length multiplied by the height. For squares (a special type of rectangle), the length and height are the same, so you just use [tex]s^2[/tex], where [tex]s[/tex] is the side length.
[tex]A=s^2=16^2=\boxed{256}[/tex]
(b) The circleThe formula for the area of the circle is [tex]\pi r^2[/tex], where [tex]\pi[/tex] is pi, a constant, and [tex]r[/tex] is the radius of the circle, or the length from the center point to the edge.
We're given the side length of the square, which is the same as the diameter of the circle (length from edge to edge going through the center point). Divide the diameter by [tex]2[/tex] to get the radius of [tex]8[/tex] kilometers.
[tex]A=\pi r^2=\pi8^2=\boxed{64\pi}\approx201.1[/tex]
(c) The blue sectionThe area of the blue section is simply the area of the square minus the area of the circle since we just want what's left over.
[tex]A=\boxed{256-64\pi}\approx54.9[/tex]
You can keep the answer exact (the boxed expression) or use the approximate value of 54.9, depending on the instructions for the assignment.
A sample of size 50 will be drawn from a population with mean 73 and standard deviation 8. Find the 19th percentile of the sample mean.
Answer:
72
Step-by-step explanation:
Find the graph of the inequality >- 1x +1. 6 Find the graph of the inequality > - 1x +1 . 6
Answer:
A
Step-by-step explanation:
We know the graph must be a dotted line.
Eliminate C and D.Also, since there is a > sign, the line must be shaded above.
Eliminate B.This leaves A as the answer.