Answer:
C
Step-by-step explanation:
Citizens are not given the correct information.
At a sand and gravel plant, sand is falling off a conveyor and onto a conical pile at a rate of 16 cubic feet per minute. The diameter of the base of the cone is approximately three times the altitude. At what rate (in ft/min) is the height of the pile changing when the pile is 22 feet high? (Hint: The formula for the volume of a cone is V=²h.) dh = ft/min dt
The height of the pile is changing at a rate of approximately 0.001463 ft/min when the pile is 22 feet high.
To solve this problem, we need to find the rate at which the height of the pile is changing, which is represented by dh/dt.
Given:
The sand is falling off at a rate of 16 cubic feet per minute.
The diameter of the base of the cone is approximately three times the altitude.
Let's denote the height of the pile as h and the radius of the base as r.
We are given that the diameter of the base is approximately three times the altitude, so we have:
2r ≈ 3h
r ≈ (3/2)h
The formula for the volume of a cone is:
V = (1/3)πr²h
We can express the volume as a function of h:
V(h) = (1/3)π[(3/2)h]²h
V(h) = (1/3)π(9/4)h³
V(h) = (3/4)πh³
We know that the rate of change of volume is given by dV/dt, which is equal to 16 cubic feet per minute.
dV/dt = 16
Now, we can differentiate V(h) with respect to t using the chain rule:
dV/dt = dV/dh * dh/dt
To find dh/dt, we need to solve for it.
First, let's differentiate V(h) with respect to h:
dV/dh = (3/4)π * 3h²
dV/dh = (9/4)πh²
Now, we can rearrange the equation dV/dt = dV/dh * dh/dt to solve for dh/dt:
dV/dt = dV/dh * dh/dt
16 = (9/4)πh² * dh/dt
Now, we substitute the given value h = 22 (when the pile is 22 feet high):
16 = (9/4)π(22)² * dh/dt
Simplifying:
16 = (9/4) * 484 * dh/dt
16 = 10926 * dh/dt
To find dh/dt, we divide both sides by 10926:
dh/dt = 16 / 10926
dh/dt ≈ 0.001463 ft/min
Therefore, the height of the pile is changing at a rate of approximately 0.001463 ft/min when the pile is 22 feet high.
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Solve for S plz
5/8 - 3/8s = 2- s
A cab company charges $2.75 per mile, plus an extra surcharge. Bernardo took a cab to the
airport, which was 8 miles from his home. His total fare came to $29.50. Let x represent the
number of miles and y represent the total cost of the cab ride.
a. What is the slope-intercept equation of the line that fits this information?
b. If a customer paid $35, how many miles did they travel in the cab?
Answer:
a) $7.50
b) 10 miles
Step-by-step explanation:
a)
y=mx+b
y=$29.50
x=8
m=$2.75
b=unknown
29.50=2.75(8)+b
29.50-22=22-22+b
7.50=b
Check:
2.75(8)+7.50=29.50
b)
y=$35
x=unknown
m=2.75
b=7.50
35-7.50=2.75x+7.50-7.50
27.5/2.75=2.75/2.75x
10=x
Express each of the given sentences using set notations or functions.
1. Set N is the set of counting numbers less than or equal to 7.
3. The number 9 is the square root of 81.
5. The number y is a prime and less than 18.
7. The number x is an even positive number divisible by 4.
9. Set C is the set of all pure imaginary numbers above the horizontal axis
- N = {x | x is a counting number and x ≤ 7}
- S(81) = 9
- P(y) and y < 18
- E(x) and x > 0
- C = {z | z is a pure imaginary number and Im(z) > 0}
1. Set N is the set of counting numbers less than or equal to 7.
The set N can be expressed using set-builder notation as N = {x | x is a counting number and x ≤ 7}. This means that N is a set that contains all the counting numbers (1, 2, 3, 4, 5, 6, 7) and no other numbers.
3. The number 9 is the square root of 81.
Let S(x) be the square root function. S(81) = 9. Here, S(x) represents the square root of x, and when we substitute 81 into the function, we get 9.
5. The number y is a prime and less than 18.
Let P(x) represent whether x is a prime number. We can write the statement as P(y) and y < 18. This means that the number y is a prime number and it is less than 18.
7. The number x is an even positive number divisible by 4.
Let E(x) represent whether x is an even number divisible by 4. The statement can be written as E(x) and x > 0. This means that the number x is even, divisible by 4, and it is a positive number.
9. Set C is the set of all pure imaginary numbers above the horizontal axis.
The set C can be represented as C = {z | z is a pure imaginary number and Im(z) > 0}. z represents any complex number, and Im(z) represents the imaginary part of z. The set C contains all pure imaginary numbers that have an imaginary part greater than 0, which means they lie above the horizontal axis on the complex plane.
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5n + 10 for n= 3
I need help with this problem please
Answer:
25
Step-by-step explanation:
Answer:
N=1
Step-by-step explanation:
Move all terms containing n
to the left side of the equation.
− 3 n − 7 = − 10
Move all terms not containing n
to the right side of the equation.
− 3 n=− 3
Divide each term by −3
and simplify.
n = 1
Angle CCC is inscribed in circle OOO.
\overline{AB}
AB
start overline, A, B, end overline is a diameter of circle OOO.
What is the measure of \angle A∠Aangle, A?
Answer:
43
Step-by-step explanation:
angle c=90 because it is an angle gotten from the two ends of a diameter
sum of angles in a triangle is 180
since an angle is 90 the other two angles sum up to 90
angle a =90-37=43
Determine the equation of the line that passes through the point (6,9) andis perpendicular to the line x = -1.
The line x=-1 is a vertical line that passes through the point (-1,0).
It means that a line that is vertical to it will be an horizontal line. Since the horizontal line will always have the same y coordinate and one of the points on it is (6,9), the y coordinate of every point on this line is 9.
With this information we can determine that the equation of this line is y=9.
6x – у = -9
—12х – 4 y = 0
Answer:
-15
3
Step-by-step explanation:
6x-y=-9
6x-(15)=-9
-12x-4y=0
-12x-4(3) =0
-12-12=0
Examples of distribution
Answer:
see below
Step-by-step explanation:
5(2a+2b+2c)
you must distribute the 5 among the values in parenthesis
4(x-3)
you must distribute the 4 among the values in parenthesis
Hope this helps! :)
The method for finding confidence intervals with the chi-square distribution should be used only when the distribution of the population is:
a. Normal
b. Skewed
c. Bimodal
d. Chi-square
The correct answer is d. Chi-square. The chi-square method for finding confidence intervals should be used only when the population distribution is chi-square.
The method for finding confidence intervals with the chi-square distribution is specifically designed for situations where the data follows a chi-square distribution.
The chi-square distribution is a probability distribution that arises in inferential statistics, particularly in hypothesis testing and constructing confidence intervals for categorical data.
When the data does not follow a chi-square distribution, such as when the distribution is normal, skewed, or bimodal, using the chi-square distribution for constructing confidence intervals may lead to incorrect results.
In those cases, other methods appropriate for the specific distribution should be used. The correct answer is d. Chi-square.
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use the interactive tool to find the difference.
1- 3/10 white the answer as a fraction .
Answer:
you have to "convert" the one to be set up the same as 3/10:
you subtract fractions, by having a common denominator and then subtracting the numerators.
10/10 -3/10 = 7/10
Step-by-step explanation:
i hope this helped :)
(−7.4 )+ L = 9.11
What is L ?
L = 16.51
Get variable onto one side of equation and simplify:
(−7.4 )+ L = 9.11
L = 9.11 + 7.4
L = 16.51
Answer:
L=16.51
Step-by-step explanation:
-7.4 +L=9.11 remove unnecessary ( )
L=9.11 +7.4 move constant (7.4) to the right change sign
L=16.51 add the numbers
if you could explain how to do at least one thatd help alot
Step-by-step explanation:
If you know how to do an equation like: 5x - 3 = 21
Or something formatted like that, its the exact same thing, only there's a different sign. So I believe the first one would be:
x + 3 < 5
- 3 -3
x = 2
But I just learnt how to do this so let me know if it works :)
Also! If the number after the sign's (such as < or >) sign changes (such as -3 becomes 3 or 3 becomes -3. or even when -3 becomes 1) then you swap the sign ( < becomes > and visa versa) But this only works if it changes due to a multiplication or division. Example:
-3x > 3
(divide by -3)
x < -1
I swapped the sign. Make sense?? Let me know if it doesnt and I'll clarify
What is the area of this figure?
Answer:
The answer is 115.50 sq. mm.
Step-by-step explanation:
the website is offering a discount of $7.50 on all bolga basket order.
Answer:
Okay but what is the bolga basket original price?
Answer:what is the answer
tell the number pls i have to get this answer right the orignal number what is the original number
Step-by-step explanation:
someone please help asap i’m stuck
Answer:
no
Step-by-step explanation:
no
26. The square root of 9 is how much less than 9 squared? : *
A) 0
B) 3
C) 6
D) 78
22. Solve for x.
3(x + 8) -3 = 2(4x - 9) + 30
: *
A) x = 1
B) x = -1
C) x = 3
D) None of the above
21. Which of the following statements is NOT true? : *
A) –2/5 = 2/–5
B) –(–2/–5) = –(2/5)
C) –2/5 = –(2/5)
D) –2/–5 = –(2/5)
The answer is D) 78.22.
Solve for x.3(x + 8) -3 = 2(4x - 9) + 303x + 24 - 3 = 8x - 18 + 303x + 21 = 8x + 123x - 8x = 12-5x = 12x = -2.4Thus, the value of x is -2/5, which is not in the given options. Therefore, None of the above is the correct answer.21. The statement that is NOT true is A) –2/5 = 2/–5. -2/5 ≠ 2/-5.The answer is A) –2/5 = 2/–5.
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EiiekwkwkqHElp NOWSKKSKSKSKSKSKAKMAMQOQKWOWSKAKAK
Answer:
The answer is D or 13/36
Step-by-step explanation:
The ratio boys : girls in a theatre is 3:4. 68 girls leave and the ratio becomes 5:1. Work out how many boys are in the theatre.
whats the minimum and maximum value of f(x)=3(x+8)^2−10
Answer:
(-8,-10)
Step-by-step explanation:
Rewrite (x+8)2(x+8)² as (x+8)(x+8).
f(x)=3((x+8)(x+8))−10
Expand (x+8) (x+8) using the FOIL Method.
Apply the distributive property.
f(x)=3(x(x+8)+8(x+8))−10
Apply the distributive property.
f(x)=3(x⋅x+x⋅8+8(x+8))−10
Apply the distributive property.
Simplify and combine like terms.
Simplify each term.
Multiply x by x.
f(x)=3(x2+x⋅8+8x+8⋅8)−10
Move 8 to the left of x.
f(x)=3(x2+8⋅x+8x+8⋅8)−10
Multiply 8 by 8.
f(x)=3(x2+8x+8x+64)−10
Add 8x and 8x.
f(x)=3(x2+16x+64)−10
Apply the distributive property.
f(x)=3x2+3(16x)+3⋅64−10
Simplify.
Multiply 16 by 3.
f(x)=3x2+48x+3⋅64−10
Multiply 3 by 64.
f(x)=3x2+48x+192−10
Subtract 10 from 192.
f(x)=3x2+48x+182
The minimum of a quadratic function occurs at x=\(-\frac{b}{2a}\) If a is positive, the minimum value of the function is f (\(-\frac{b}{2a}\)).
Substitute in the values of aa and b.
x=−\(\frac{48}{2(3)}\)
x=-8
Replace the variable x with −8 in the expression.
f(−8)=3(−8)2+48(−8)+182
Y=-10
Therefore, the minimum value is (-8,-10) but if it is asking for just the y-value it would be -10.
b) A men earns Rs.50000 in a month. He spends 30% of his income on foood
2/5 on his child's Education,0.25% on transportation and rest he saves.
i) Find the amount that he spends on each topic.
ii)Find his saving percentage.
Answer:
\(\huge\mathfrak\pink{ here's your solution } \\ \\ im \: soo \: happy \: \)
What is the slope of the line that contains the points (-1,2) and (4,3)
Answer:
1/5
Step-by-step explanation:
We can find the slope using the slope formula
m = (y2-y1)/(x2-x1)
= (3-2)/(4 - -1)
(3-2)/(4+1)
1/5
I don't quite understand when my test asks, "x when f(x)=-2" can someone please help?
Answer:
f(x) means y. So basically what is x when y = -2
Step-by-step explanation:
What is the inverse of the statement?
A number that has exactly two distinct factors is prime.
If a number has exactly two distinct factors, then the number is prime.
If a number does not have exactly two distinct factors, then the number is not prime.
If a number is not prime, then the number does not have exactly two distinct factors.
If a number is prime, then the number has exactly two distinct fac
The inverse of the statement is "If a number does not have exactly two distinct factors, then the number is not prime." Thus Option 2 is the answer.
When a conditional statement is reversed, the hypothesis and conclusion are both negated. The hypothesis in the original statement is "a number with exactly two distinct factors," while the conclusion is "is prime."
To make the inverse, we negate both sections. "A number does not have exactly two distinct factors" is the antonym of "A number that has exactly two distinct factors." "Is not prime" is the opposite of "is prime."
As a result, the inverse statement is "If a number does not have exactly two distinct factors, then the number is not prime."
It's crucial to remember that a statement's inverse could or might not be accurate. In this instance, the inverse is true since the definition of a prime number is incompatible with the fact that a number has more than two components if it has more than exactly two different factors.
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Hazel and Tom travel the same 18 km route.
Hazel starts at 9. 00 am and walks at a constant speed of 4. 8 km/h
Tom starts at 9. 39 am and runs at a constant speed.
Tom overtakes Hazel at 10. 15 am
At what time does Tom finish the route?
Answer:
11:27 am.
Step-by-step explanation:
The time which has passed when Tom overtakes Hazel is after Hazel has walked 1 hr 15 minutes and in that time Hazel has walked
1.25 * 4.8
= 6 km.
So, Tom runs 6 km in 10:15 - 9.39 = 36 minutes
= 0.6 hrs.
So, Tom's speed is 6/0.6 = 10 km/hr.
,
and Tom will take 18/10 = 1.8 hours to finish the route,
= 1 hr 48 minutes
So he finishes the route at
9:39 + 1:48
= 11:27 am.
PLEASE I NEED HELP!!!!!!!!!
The equation y=25x represents Latanya's earnings in dollars and cents, y, for working x hours. Find the rate of change.
Answer:
25 dollars/hour
Step-by-step explanation:
The rate of change is 25 dollars/hour
When constructing a perpendicular bisector why must the compass opening be greater than 1/2.
It is critical to open a compass with over half the way in order for the arcs formed to meet for perpendicular bisector.
What is perpendicular bisector?A perpendicular bisector would be a line that cuts a line segment in half and forms a 90-degree angle at the intersection point. In other words, a perpendicular bisector separates a line segment now at midpoint, forming a 90-degree angle.
Now, consider an example;
When you wish to build a perpendicular line on a line segment, like line AB, you do the following;
Set the compass on a radius more than half the length of the line AB.Using A as your center, draw an arc above and below line AB.With the same radius and B as our center, draw additional arcs on top or below line AB to join a first arcs on the both side of the line.Join the two arc intersections to cut line AB at M.A line AB appears to be bisected perpendicularly as a result. The arcs would not have met if the compass is opened less than half way down line AB.
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Solve the equation. then check your solution. 119 = n minus 66 a. 53 c. â€""185 b. 186 d. 185
Answer:
Solve the equation 119 = n - 66 and the options are: a. 53, b.186, c. -185, d. 185
solution :
From these we can get is;
119 = n – 66
=> n = 119 + 66
=> n = 185
So option d ) 185 is the correct answer
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Disclaimer: the question was given incomplete on the portal. Here is the Complete Question.
Question: Solve the equation 119 = n - 66 and the options are: a. 53, b.186, c. -185, d. 185
We get that the value of n is option (d) 185 for the equation n - 66 = 119.
We are given an equation:
n - 66 = 119.
An equation is an expression that has an equality sign in between.
For example: 3 x + 3 y = 6 or 7 x + 5 y = 9
We have to solve the equation to find the value of n.
First, we will add 66 to both the sides of the equation.
n - 66 + 66 = 119 + 66 .
Now simplifying the expression, we get that:
n = 119 + 66
Solving the expression to get the value of n:
n = 185
So, option (d) 185 is correct.
Therefore, we get that the value of n is option (d) 185
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The sum of 324 and 135 is 503. Which number base was used for this calculation.
Answer:
Base 6 was used
Step-by-step explanation:
Here, we want to find which number base was used for the addition calculation
We start by adding the two end numbers
4 + 5 = 9
But 3 was recorded;
That means we can have 6 as the number base( 9/6 = 1 r 3)
We still continue to verify this;
The next addition is 2+3 = 5, adding the 1 brought forward, we have 6, but 0 was recorded
6/6 is (1 r 0)
This still further corroborated the earlier assertion;
then lastly 3 + 1 + 1 (1 brought forward); 5
This was recorded directly to show that the base in question is not less than 5
Hence our base of addition is base 6
Divide. (6×1011)÷(3×1015) 2×10−12 times 10 inverse 2×10−72 times 10 to the negative 7 power 2×10−42 times 10 to the negative 4 power 2×100
The value of the division (6×1011)÷(3×1015) is the negative 4 power 2×10.
How can we interpret the division?When 'a' is divided by 'b', then the result we get from the division is the part of 'a' that each one of 'b' items will get.
Division can be interpreted as an equally dividing the number that is being divided in total x parts, where x is the number of parts the given number is divided.
Thus, \(a \div b\) = a divided in b equal parts.
WE have been given that (6×10^11)÷(3×10^15) .
Simplify;
(6×10^11)÷(3×10^15)
To solve the exponent first;
10^11 - 15 = 10^-4
Now we get;
(6 )÷(3×10^-4)
2 ×10^4 = 2 ×10 ×10×10×10
= 20,000
Hence, the value of the division (6×1011)÷(3×1015) is the negative 4 power 2×10.
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