What is the volume of the sphere? Write your answer in terms of pi (for example, 25 pi cubic units).
Answers
Answer:
4/3 ×π×r³
4/3 × 22/7 ×3³
88/21 ×27
Related Questions
what is the following term of -3;0;3;6.
Answers
Step-by-step explanation:
Start at -3 then begin adding 3's to get the next terms
-3 0 3 6 9 .....
A company produces and sells solar panels for $520. The company's daily profit, P(x), can be modeled by the function P(x) = −6x2 + 156x + 1,000, where x is the number of $5 price increases for each solar panel. Use the graph to answer the questions. Graph of function p of x equals negative 6 x squared plus 156 x plus 1,000. The graph has the x-axis labeled as number of price increases, and the y-axis labeled as profit. The curve begins at (0, 1000), increases to the vertex at about (13, 2014), and decreases through about (31, 0). Part A: Identify the approximate value of the y-intercept. Explain what the y-intercept means in terms of the problem scenario. (3 points) Part B: Identify the approximate value of the x-intercept. Explain what the x-intercept means in terms of the problem scenario. (3 points) Part C: Identify the approximate value of the maximum of the function. Explain what the maximum of the function means in terms of the problem scenario. (4 points)
Answers
The maximum daily profit the company can earn is $2,350.
It is a set of points in a coordinate plane that represents the values of the function for different inputs.
The function P(x) = −6x² + 156x + 1,000 models the daily profit of the company, where x is the number of $5 price increases for each solar panel. The graph of the function has a vertex at approximately (15, 2350), which represents the maximum point on the graph.
Therefore, the maximum daily profit the company can earn is $2,350.
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if a circle has a radius of 10 cm and the measure of arc AB is 45 degrees, find the length of the arc AB
Answers
Answer:
[tex]\huge\boxed{\sf S= 7.85 \ cm}[/tex]
Step-by-step explanation:
Given:arc AB = θ = 45 degrees
Radius = r = 10 cm
π = 3.14
Required:Length = S = ?
Formula:[tex]\displaystyle S= \frac{\theta}{360} \times 2 \pi r[/tex]
Solution:Put the given data in the formula.
Finding arc length.
[tex]\displaystyle S = \frac{45}{360} \times 2(3.14)(10)\\\\S = 0.125 \times 62.8\\\\S= 7.85 \ cm\\\\\rule[225]{225}{2}[/tex]
Felipe rented a truck for one day. There was a base fee of $17.95, and there was an additional charge of 86 cents for each mile driven. Felipe had to pay $270.79 when he returned the truck. For how many miles did he drive the truck?
Answers
Answer:
421.4 miles
Step-by-step explanation:
Numner of miles= ($270.79-$17.95)/86 cents
= $252.84/$0.60
=421.4 miles
Can anyone help me solve this question?
x = e^y
Answers
Step-by-step explanation:
Pick any point on the graph below for a solution:
Sandra is traveling 15 mph on her bicycle. After 4 hours, how far will she have traveled?
Answers
Answer:
→ 15m/hr * 4hr = 60! ←
Hope This Helps On You're Quiz/Assignment
Speed/DistancexTime
Show that the equations x+y+z = 4, 2x+5y-2z =3, x+7y-7z =5 are not consistent
Answers
Answer:
We can start by using the second equation to eliminate x:
2x + 5y - 2z = 3
2x = -5y + 2z + 3
x = (-5/2)y + z + 3/2
Now we can substitute this expression for x into the first and third equations:
x + y + z = 4
(-5/2)y + z + 3/2 + y + z = 4
(-5/2)y + 2z = 5/2
x + 7y - 7z = 5
(-5/2)y + z + 3/2 + 7y - 7z = 5
(9/2)y - 6z = 7/2
Now we have a system of two equations with two variables, (-5/2)y + 2z = 5/2 and (9/2)y - 6z = 7/2. We can use any method to solve for y and z, such as substitution or elimination. However, we will find that the system is inconsistent, meaning there is no solution that satisfies both equations.
Multiplying the first equation by 9 and the second equation by 5 and adding them, we get:
(-45/2)y + 18z = 45/2
(45/2)y - 30z = 35/2
Adding these two equations, we get:
-12z = 40/2
-12z = 20
z = -5/3
Substituting z = -5/3 into (-5/2)y + 2z = 5/2, we get:
(-5/2)y + 2(-5/3) = 5/2
(-5/2)y - 10/3 = 5/2
(-5/2)y = 25/6
y = -5/12
Substituting y = -5/12 and z = -5/3 into any of the original equations, we get:
x + y + z = 4
x - 5/12 - 5/3 = 4
x = 29/12
Therefore, the solution is (x, y, z) = (29/12, -5/12, -5/3). However, if we substitute these values into any of the original equations, we will find that it does not satisfy the equation. For example:
2x + 5y - 2z = 3
2(29/12) + 5(-5/12) - 2(-5/3) = 3
29/6 - 5/2 + 5/3 ≠ 3
Since there is no solution that satisfies all three equations, the system is inconsistent.
Step-by-step explanation:
Answer:
See below for proof.
Step-by-step explanation:
A system of equations is not consistent when there is no solution or no set of values that satisfies all the equations simultaneously. In other words, the equations are contradictory or incompatible with each other.
Given system of equations:
[tex]\begin{cases}x+y+z = 4\\2x+5y-2z =3\\x+7y-7z =5\end{cases}[/tex]
Rearrange the first equation to isolate x:
[tex]x=4-y-z[/tex]
Substitute this into the second equation to eliminate the term in x:
[tex]\begin{aligned}2x+5y-2z&=3\\2(4-y-z)+5y-2z&=3\\8-2y-2z+5y-2z&=3\\-2y-2z+5y-2z&=-5\\5y-2y-2z-2z&=-5\\3y-4z&=-5\end{aligned}[/tex]
Subtract the first equation from the third equation to eliminate x:
[tex]\begin{array}{cccrcrcl}&x&+&7y&-&7z&=&5\\\vphantom{\dfrac12}-&(x&+&y&+&z&=&4)\\\cline{2-8}\vphantom{\dfrac12}&&&6y&-&8z&=&1\end{aligned}[/tex]
Now we have two equations in terms of the variables y and z:
[tex]\begin{cases}3y-4z=-5\\6y-8z=1\end{cases}[/tex]
Multiply the first equation by 2 so that the coefficients of the variables of both equations are the same:
[tex]\begin{cases}6y-8z=-10\\6y-8z=1\end{cases}[/tex]
Comparing the two equations, we can see that the coefficients of the y and z variables are the same, but the numbers they equate to is different. This means that there is no way to add or subtract the equations to eliminate one of the variables.
For example, if we subtract the second equation from the first equation we get:
[tex]\begin{array}{crcrcl}&6y&-&8z&=&-10\\\vphantom{\dfrac12}-&(6y&-&8z&=&\:\:\;\;\:1)\\\cline{2-6}\vphantom{\dfrac12}&&&0&=&-11\end{aligned}[/tex]
Zero does not equal negative 11.
Since we cannot eliminate the variable y or z, we cannot find a unique solution that satisfies all three equations simultaneously. Therefore, the system of equations is inconsistent.
find the diameter of the crcle with the gven circmfence . use 3.14
c=31cm
Answers
The diameter of the given circle is 9.87 cm.
Given.
Circumference = 31 cm
Now,
Circumference of circle = 2×π×r
r = Radius of Circle
Substitute the value of circumference in the formula,
31 = 2×π×r
31 = 2× 3.14 × r
r = 4.935 cm
Diameter of circle is double the radius of circle,
D = 2r
D = 2(4.935)
D = 9.87 cm
Hence diameter of the circle is 9.87 cm.
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Please, someone help me with this answer, I really would appreciate it so much. Show all work. Recall the formula: A = P(1 + 2)² nt Mark invests $7,938 in a retirement account with a fixed annual interest rate of 2% compounded semiannually. What will the account balance be after 19 years
Answers
The account balance will be approximately $11,390 after 19 years.
In this case, Mark invests $7,938 with an annual interest rate of 2% compounded semiannually. Therefore:
P = $7,938
r = 2% = 0.02 (as a decimal)
n = 2 (compounded semiannually)
t = 19 years
Plugging these values into the formula, we have:
[tex]A = \$7,938(1 + 0.02/2)^{(2*19)[/tex]
Calculating the expression inside the parentheses:
(1 + 0.02/2) = 1.01
Raising this to the power of (2*19):
[tex](1.01)^{(2*19)} = 1.43[/tex]
Multiplying this by the principal amount:
A ≈ $7,938 * 1.43
A ≈ $11,390
Therefore, the account balance will be approximately $11,390 after 19 years.
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Fill in the missing digit to make the least number that satisfies the condition (makes it
a true statement).
234.... is divisible by 3.
TYSM 4 UR HELP
(If you get it right I will give you Brainiest )
Answers
Adding up the digits of the number that we have so far, we get:
2 + 3 + 4 = 9
The missing digit should be a number that, when added to 9, results in a multiple of 3. Because 9 is already a multiple of 3, the smallest such number would be 0.
So, the missing digit is 0, and the least number that satisfies the condition is 2340.
5.
Find the surface area and volume of the
right cylinder. Round your answer to the
nearest hundredth.
22 m
20.4 cm
Answers
Step-by-step explanation:
consider the cylinder standing upright.
we have to assume that 20.4 cm is the diameter of the circle.
it is not clear what dimension of the result is needed : cm³ or m³, cm² or m². it is important that we do our calculations always with the same dimension of all operands (don't mix apples and oranges in the same calculation).
the volume of such a cylinder (or any regular 3D object) is
base area × height
for a cylinder the base area is a circle :
pi × r²
r being the radius (half of the diameter).
so, we have
r = 20.4/2 = 10.2 cm
height = 22 m = 2,200 cm (1 m = 100 cm)
volume = pi × (10.2)² × 2200 =
= 719,072.8593... cm³ =
= 0.7190728593... m³
≈ 719,072.86 cm³
≈ 0.72 m³
for the surface of a cylinder we need to imagine to cut the cylinder open with straight cut from the top to the bottom and then put the result flat on the table.
this result is a rectangle.
length = height of the original cylinder.
width = circumference of the original cylinder (and its circular base) = 2 × pi × r
the surface area of the cylinder is then
2 × base circle area (top and bottom) = 2 × pi × r²
plus
the area of that rectangle
length × width = height × 2 × pi × r
that is
height×2×pi×r + 2×pi×r² = 2×pi×r×(height + r)
in our case now
surface area = 2×pi×10.2×(2200 + 10.2) =
= pi×20.4×2210.2 =
= 141,648.3809... cm² =
= 14.16483809... m²
≈ 141,648.38 cm²
≈ 14.16 m²
remember, because
1 m = 100 cm
then
1 m² = 1 m × 1 m = 100 cm × 100 cm = 10,000 cm²
1 m³ = 1 m × 1 m × 1 m = 100 cm × 100 cm × 100 cm =
= 1,000,000 cm³
The number 84 can be expressed as the sum of 54 + 30. Which shows how to use the distributive property to rewrite that sum as a multiple of a sum whose addends have no common factors greater than 1?
A. 2(27 + 15)
B. 3(18 + 10)
C. 5(11 + 6)
D. 6(9 + 5)
Answers
The answer of the sum is D. 6(9 + 5).
To rewrite the sum 54 + 30 using the distributive property as a multiple of a sum whose addends have no common factors greater than 1, we need to factor out the greatest common factor from both numbers.
The greatest common factor of 54 and 30 is 6. By factoring out 6, we can rewrite the sum as:
54 + 30 = 6 * (9 + 5)
Now, let's examine the options given:
A. 2(27 + 15) does not have a common factor of 6.
B. 3(18 + 10) does not have a common factor of 6.
C. 5(11 + 6) does not have a common factor of 6.
D. 6(9 + 5) is the correct answer because it has a common factor of 6, which is the greatest common factor of 54 and 30.
Therefore, the answer is D. 6(9 + 5).
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a is a negative odd number.
Choose two words from the list in the box that describe a²
A negative
B positive
Codd
D even
Answers
Answer:
positive and odd
Step-by-step explanation:
If a is a negative odd number, then a² can't be negative, because a number squared is always positive.
I'll illustrate this with an example.
Let's choose -7 as an example. Instead of a.
-7² = 49
So we see that the result is positive & odd.
So the words that describe a^2 are positive and odd.
What would be the Prefix notation for the given equation?
(a+(b/c)*(d^e)-f)
a.
-+a*b/c^def
b.
-a+*/bc^def
c.
-+a*/^bcdef
d.
-+a*/bc^def
Answers
The Prefix notation for the given equation is "[tex]\pm a \times /bc^{de}^f[/tex]". d.
The Prefix notation for the given equation "[tex](a+(b/c) \times (d^e)-f)[/tex]" would be:
[tex]\pm a \times /bc^{de}^f[/tex]
In Prefix notation, also known as Polish notation, the operators come before their operands.
Here's a step-by-step breakdown of converting the given equation to Prefix notation:
Start with the given equation: (a+(b/c)*(d^e)-f)
Replace the arithmetic operators with their corresponding symbols in Prefix notation:
Addition (+) becomes +
Division (/) becomes /
Exponentiation (^) becomes ^
Subtraction (-) becomes -
Rearrange the equation to move the operators before their operands:
Replace [tex](a+(b/c)(d^e)-f)[/tex] with [tex](\pm a/bc^{de}^f)[/tex]
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The picture of milk shown is a prism. The base has an area of 40 cm² and the height of the pitcher is
26 cm. Will the pitcher hold 1 Liter of milk?
Answers
Yes, the pitcher hold 1 Liter of milk.
We have to given that;
The picture of milk is a prism.
And, The base has an area of 40 cm² and the height of the pitcher is 26 cm.
Since, We know that;
Volume of prism is,
V = base area x Height
Now, Substitute all the values, we get;
V = 40 x 26
V = 1040 cm³
Since, 1 liter = 1000 cubic centimeters
Hence, the pitcher hold 1 Liter of milk.
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Please help i need help on pre-calc
Answers
Answer:
32.5 square units
Step-by-step explanation:
Area of triangle = ½ ab sin C
where a and b are to sides that meet at angle C.
Area of triangle = ½ (13)(10) sin 150
= 32.5 square units.
please see attachment for a visual
Which equation gives the number of 13
inches that are in 56
inch?
CLEAR CHECK
13÷56=25
56÷13=518
13÷56=185
56÷13=52
Answers
Step-by-step explanation:
The answer is 5/6 ÷ 1/3 = 5/18
because
5/6 × 1/3 = 5/18 and it's true
Is a triangle with side lengths 21,20 and 29 a right triangle show why or why not .
Answers
Step-by-step explanation:
Yes, we can determine whether a triangle is a right triangle or not by using the Pythagorean Theorem, which states that in a right triangle, the square of the length of the hypotenuse (longest side) is equal to the sum of the squares of the other two sides.
Let's label the sides of the triangle as follows: side a = 21, side b = 20, and side c = 29 (where c represents the hypotenuse). Now, we can use the Pythagorean Theorem to check whether the triangle is a right triangle or not:
c^2 = a^2 + b^2
Substituting in the given values, we get:
29^2 = 21^2 + 20^2
841 = 441 + 400
841 = 841
As the equation is true, we can conclude that the triangle is a right triangle.
the length of arc AB is 6pi and the measure of arc AB=60 degrees. What is the diameter of the circle?
Answers
Answer:
36
Step-by-step explanation:
Arc = rad * radius
radius = arc/rad
given, arc = 6π
rad = 60 * π/180 = π/3 rad
radius = 6π / (π/3)
= 6π * 3/π
= 18
Diameter = 2 * radius
= 2*18
= 36
factorise fully
1) x²y - 5yx - 6y
2) w² (a - b) - 9 (a - b)
please help
Answers
1) x²y - 5yx - 6y
To factorise this expression, we can first look for the greatest common factor (GCF) among the terms. We can see that they all have a common factor of 'y'. So, we can factor out 'y' from each term:
y(x² - 5x - 6)
Now, we need to factorise the quadratic expression inside the parenthesis. We can do this by finding two numbers that multiply to -6 and add to -5. These numbers are -6 and 1:
y(x - 6)(x + 1)
So, the fully factorised form of the given expression is:
y(x - 6)(x + 1)
2) w² (a - b) - 9 (a - b)
In this expression, we can notice that both terms have a common factor of (a - b). So, we can factor out (a - b) from each term:
(a - b)(w² - 9)
Now, we can see that the expression inside the parenthesis is a difference of two squares. We can factorise it further as (w + 3)(w - 3):
(a - b)(w + 3)(w - 3)
So, the fully factorised form of the given expression is:
(a - b)(w + 3)(w - 3)
By factorising expressions fully, we can simplify them and make them easier to understand or use in further calculations. It is an essential skill in algebra and helps in solving equations, graphing functions, and finding solutions to various mathematical problems.
A 500g packet of beans costs £1.55. A 125g packet of the same beans costs £0.36. Which packet is better value for money?
Answers
Step-by-step explanation:
Find unit cost per gram for each packet....lower unit cost is better value
L 1.55 / 500 g = .0031 L/g
L .36 / 125 g = .0029 L/g <=======best value 125 g packet
Question 1 of 10 Solve - 5 < 4x + 3 <= 7 x > - 2orx <= 1 B. x < - 2orx < 4 O C.-2 and x <= 1 D. x > 2 and x < 4
Answers
For the inequality -5 < 4x + 3 ≤ 7 the combined solution are x < -2 and x ≤ 1.
To solve the inequality -5 < 4x + 3 ≤ 7, we need to consider two separate inequalities:
Solve the inequality -5 < 4x + 3:
-5 < 4x + 3
Subtract 3 from both sides:
-5 - 3 < 4x
-8 < 4x
Divide both sides by 4
-8/4 > x
-2 > x
x < -2.
Now let's solve the inequality 4x + 3 ≤ 7:
4x + 3 ≤ 7
Subtract 3 from both sides:
4x ≤ 7 - 3
4x ≤ 4
Divide both sides by 4:
x ≤ 1
Therefore, the combined solution is x < -2 and x ≤ 1.
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please look at the picture
Answers
6x-7y=-10
12x-5=16
2xay=10
-10+16+x=10
10=-10+16+x=6x
6x+10=16x
ay=16x
Kathy had of a pepperoni pizza in
her refrigerator. She gave her friend
a slice that was of the original pizza.
How much pizza does Kathy have left?
Answers
The answer is she has 7/8 (or seven slices) of the pizza left. Based on the information given, we can calculate that Kathy ate 1/8 (or one slice) of the original pepperoni pizza.
It is important to note that the size of the original pizza is unknown, so we cannot accurately determine the exact amount of pizza Kathy has left in terms of square inches or centimeters.
However, we do know that she has the majority of the pizza remaining, and could potentially have enough for multiple meals or leftovers. Additionally, if Kathy is tracking her caloric intake, she can calculate the number of calories consumed from the slice she ate and adjust her diet accordingly.
Overall, it seems like Kathy has a decent amount of pizza left to enjoy
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I need help!!!!!!!!!!!!!!!!!!
Answers
p+T+S+S=5+5 it is our answer it is write
I’m confused on this, help. Thanks you all. : )
Answers
Answer: There is no solution to this problem.
Step-by-step explanation:
The goal test score pints are 150, 103, and 41. Let's check to see if each statement is true
A. The total points for the tests are:
Type A - 156
Type B - 98
Type C - 40
None of these matches the total points.
B. The total points for the tests are:
Type A - 39
Type B - 98
Type C - 160
None of these matches the total points.
C.
Type A - 156
Type B - 2,352
Type C - 40
None of these matches the total points.
Since none of these statements match this data, there is no solution to this chart. Hope this helps!
-From a 5th Grade Honors Student
Can someone find x and y pls
Answers
Answer: x = 101, y = 20
From corresponding angles, as both pairs of lines are parallel, we know that 79 is the supplement of x. That means 79 + x = 180.
From this we have x = 101 degrees.
From corresponding angles, x is the supplement of ( 4y - 1 )
Since we know x = 101, we can plug it into our equation:
4y - 1 + 101 = 180
Simplifying:
4y + 100 = 180
Subtracting 100 from both sides of the equation:
4y = 80
Dividing by 4:
y = 20
Hope this helps!
y is inversely proportional to the square root of x. y=5 when x=36. find a formula linking x and y.
Answers
Answer:
y = 30/√x
Step-by-step explanation:
y = k/√x (where k is a constant).
5 = k/√36
5 = k/6
5 X 6 = k
k = 5 X 6 = 30.
y = 30/√x
What is the intermediate step in the form
(x+a)^2=b as a result of completing the square for the following question
Answers
The intermediate step in completing the square is[tex]$x^2 + 2ax + (a^2) = b - a^2 + (a^2)$[/tex]
To complete the square for the equation [tex]$(x+a)^2=b$[/tex], we can follow these steps:
1. Expand the left side of the equation: [tex]$(x+a)^2 = (x+a)(x+a) = x^2 + 2ax + a^2$[/tex].
2. Rewrite the equation by isolating the squared term and the linear term: [tex]$x^2 + 2ax = b - a^2$[/tex].
3. To complete the square, take half of the coefficient of the linear term, square it, and add it to both sides of the equation:
[tex]$x^2 + 2ax + (a^2) = b - a^2 + (a^2)$[/tex].
4. Simplify the right side of the equation: [tex]$x^2 + 2ax + (a^2) = b$[/tex].
This step can be represented as: [tex]\[x^2 + 2ax + (a^2) = b - a^2 + (a^2)\][/tex]
This intermediate step helps us rewrite the equation in a form that allows us to factor it into a perfect square.
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The point F( – 3, – 6) is translated 4 units right and 2 units up. What are the coordinates of the resulting point, F
Answers
Answer:The answer is (1, -4)
Step-by-step explanation: