Answer:
2.92
Step-by-step explanation:
[tex]V=\frac{4}{3}\pi r^3 \\ \\ 105=\frac{4}{3}\pi r^3 \\ \\ r^3=\frac{105}{\frac{4}{3}\pi} \\ \\ r=\sqrt[3]{\frac{105}{\frac{4}{3}\pi}} \\ \\ r \approx 2.92[/tex]
If 70 mL of solution contains 280 mg of drug, how many milligrams of drug are in 50 mL of solution?
47 POINTS !,!!!!!!!!!!!!!!
If no less than 100000 packets must be packed each week, the minimum number of packets needed to be packed each day for the remaining days is 21250.
What is an equation?An equation is an expression that shows the relationship between two or more variables and numbers.
There are 6 days from Monday to Saturday. The factory is closed on Tuesday and 15000 packets were packed on Monday. If no less than 100000 packet must be packed, hence:
4x + 15000 ≥ 100000
x ≥ 21250
If no less than 100000 packets must be packed each week, the minimum number of packets needed to be packed each day for the remaining days is 21250.
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A rectangle is 6 meters long and 4 meters wide. What is the area of the rectangle?
24 cm 2
10 cm 2
48 cm 2
20 cm 2
Graph the following inequality. y ≤ 3x +5 Use the graphing tool to graph the inequality Click to enlarge graph
Please see the graph below
The mean date is 1985.67 and standard deviation 9.2 is greater than 2005?
Answer:
Step-by-step explanation:
Use the mean and the standard deviation obtained from the last discussion and test the claim that the mean age of all books in the library is greater than 2005.
This is the last discussion:
The science portion of my library has roughly 400 books.
They are arranged, on shelves, in order of their Library of Congress
code and, within equal codes, by alphabetical order of author.
Sections Q and QA have a total of 108 books.
The bulk of the library was established in the early 1990s.
I used a deck of cards, removing the jokers and face cards, keeping
only aces (1) and "non-paints" (2 to 10). Starting from the start of
the first shelf, I would turn a card (revealing its number N) and I
would go to the Nth book. This uses ordinal numbers (1 would means the
"first" book, not a gap of 1).
The cards were shuffled sufficiently to assume that the cards have a
random order.
I sampled only the LC subsections Q and QA (therefore, not a true
sample of the entire library, as this classification is not purely
random).
Thus, I picked 21 books (the expected number being 108/5.5 = 19.6 --> 20 books)
The sampled dates of publication were (presented as an ordered set):
1967, 1968, 1969, 1975, 1979, 1983, 1984,
1984, 1985, 1989, 1990, 1990, 1991, 1991,
1991, 1991, 1992, 1992, 1992, 1997, 1999
The median date is 1990
The mean date is 1985.67
Variance = 84.93 ( Sum of (date-mean)^2 )
SQRT of variance = 9.2 (sample standard deviation)
The "sigma-one" confidence interval (containing 68% of the books), if
the sample were NOT skewed, and if the distribution were "normal"
would contain dates from "mean - 9.2" to "mean + 9.2"
Sigma-2 (95%) would have mean - 2(9.2) to mean + 2(9.2)
Sigma-3(99.7%) from "1985.67 - 3(9.2)" to "1985.67 + 3(9.2)"
1958.07 to 2012.6
There, you see one reason why the distribution is skewed (it is
possible to have books older than 1958, but it is impossible to have
book newer than 2012), but it still represents a usable model for the
library. If it applies to the entire library of 400 books, you would
expect one book (0.3% of 400) to fall outside the 3-sigma interval.
HELP!!!!!!!!!!!!!!!!!!!!!!!!
The recursive formula for f(n) is f(n) = 4.25 + f(n - 1), f(0) = 2.25.
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
Let f(n) represent the total cost of shoe rentals for n games, hence:
The recursive formula for f(n) is f(n) = 4.25 + f(n - 1), f(0) = 2.25.
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12480 es divisible de 6
Doy 50
12,480 es par y la suma de sus digitos da un multiplo de 3, por ello concluimos que es divisible por 6.
¿Como saber si un número es divisible por 6?Para que un número sea divisible por 6 debe cumplir dos condiciones.
Ser par.La suma de sus digitos debe ser multiplo de 3.En este caso tenemos 12,480, que sabemos que es par.
La suma de sus digitos da:
1 + 2 + 4 + 8 + 0 = 15
15 es multiplo de 3.
Entonces este número cumple ambas condiciones, por lo que concluimos que 12,480 es divisible por 6.
Sí quieres aprender más sobre divisiones.
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A city currently has 2.16 thousand residents. Each year the city's population grows by around 220 persons.
After 15 years what will the approximate population of the city be? Round to three significant digits.
hi
I cannot figure the number 2.16 thousand has it does not mean anything to me.
But the only thing you need to do is to add 15 times 220
so = 3300
Answer:
5,460 people
Step-by-step explanation:
2,160 + 220x is the expression. Now, we plug in 15 for x.
2,160 + 220(15)
2,160 + 3,300 = 5,460
Brainliest, please :)
The graph below shows the price of different numbers of mats below at a store:
Which equation can be used to determine p, the cost of b mats?
P= 10.50+b
B= 10.50+p
B= 10.50p
P=10.50b
Answer:
The answer to your question is p = 10.50b
Step-by-step explanation:
Since you want to find p, you're looking for an equation that has
p = <something>
The last selection has this form
p = 10.50b
I hope this helps and have a good day!
For A (1, –1), B (–1, 3), and C (4, –1), find a possible location of a fourth point, D, so that a parallelogram is formed using A, B, C, D in any order as vertices.
The possible coordinates for the vertex D of the parallelogram could be (-4, 3)
It is given that A(1, –1), B (–1, 3), and C (4, –1) are the three vertices of the parallelogram.
Let us assume that the vertices are in the order A, C, B, and D where the coordinates of D are (a, b).
In this scenario, if we join AB and CD, they will become the diagonals of the parallelogram ABCD.
According to the properties of a parallelogram, diagonals bisect each other.
Hence, mid-point of AB = mid-point of CD
Now, according to the mid-point theorem, if mid-point of AB is given as (x,y), then,
x = (x₁ + x₂)/2 and y = (y₁ + y₂)/2
Here, for AC,
x₁ = 1, y₁ = -1
x₂ = -1, y₂ = 3
Then, x = ( 1 - 1)/2 and y = (-1 + 3)/2
(x, y) ≡ (0, 1) ............. (1)
Since (x, y) is also the mid-point of CD, we also have,
x₁ = 4, y₁ = -1
x₂ = a, y₂ = b
Then, x = (4 + a)/2 and y = (-1 + b)/2
(x, y) ≡ ((4 + a)/2, (-1 + b)/2) ................... (2)
From (1) and (2),
(4+a)/2 = 0 and (-1+b)/2 = 1
4+a = 0 and (-1+b) = 2
a = -4 and b = 3
Hence, the fourth vertex D of the parallelogram can be possibly located at (-4, 3)
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Find the slope-intercept form of the line that
passes through the point (-7, 3) and is
parallel to the line 2x+5y = 3.
A meteorologist found that the rainfall in Vindale during the first half of the month was 1/2 of an inch. At the end of the month, she found that the total rainfall for the month was 2/3 of an inch. How much did it rain in the second half of the month?
The quantity of rainfall that fell in the second half of the month is; ¹/₆ of an inch.
How to solve fraction word problems?We are given;
Rainfall during first half of the month = 1/2 inch
Total rainfall for the month = 2/3 inch
Now, to find the rainfall for the second half of the month, we just subtract the one for the first half from the one for the month to get;
Rainfall in second half of the month = ²/₃ - ¹/₂ = ¹/₆ inches
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Given quadrialateral PQRS is similar to TUVW, find side PS.
The length of side PS according to the quadrilateral descriptions is; 21.
What is the length of side PS?Since, it follows from the task content that the two quadrilaterals given are congruent, hence, the corresponding sides are congruent and are in proportion to each other.
On this note, we have;
x/35 = 15/25
x = (35×15)/25
x = 21.
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Graph line y=-1/5x-5 with y and x points
Answer:
Please see picture below.
Step-by-step explanation:
Given the following exponential function, identify whether the change
represents growth or decay, and determine the percentage rate of increase or
decrease.
y = 38(1.09)^x
Step-by-step explanation:
We can determine whether the change represents exponential growth or exponential decay by making a table for a few values of x.
0 -> [tex]38(1.09)^0[/tex] = 38 * 1 = 38
1 -> [tex]38(1.09)^1[/tex]= 38 * 1.09 = 41.42
2 -> 38(1.09)² = 38 * 1.09 * 1.09 = 45.1478
We see that y increases as x increases, which makes this function represent exponential growth.
The percentage rate of increase is how much the value of y increases by each time x increases.
Since we are multiplying by 1.09 each time, we are taking 109% of the previous y value to get the current y value. Hence, the rate of increase is 9%.
A cube has it's one edge 5 cm and a cuboid measures 4m multiple 3m multiple 2m which has a greate surface area and how much ?
Answer:
Gievn that l=3m,b=5m,h=4m
L.S.A=2(l+b)h
=2×(3.5)×4
=2×8×4
=64sq.m
Step-by-step explanation:
Mark the vertex and graph the axis of symmetry of the function.
f(x) = (x – 2)2 – 25
Answer:
Vertex (2 , -25)
Axis of symmetry: x = 2
Step-by-step explanation:
Vertex of parabola:The vertex is the highest point if the parabola open downwards and the lowest point if the parabola opens upward.
f(x) = (x - 2)² - 25
The given quadratic function is in vertex form.
f(x) = a(x - h)² + k
Here, (h , k) is the vertex of the parabola.
h = 2 ; k = -25
[tex]\sf \boxed{\bf Vertex (2 , -25)}[/tex]
Axis of symmetry:The axis of symmetry is the vertical line that divides the parabola into two equal halves and it passes through the vertex of the parabola.
Axis of symmetry: x = h
[tex]\sf \boxed{\bf x = 2}[/tex]
30 feet below the surface of the water. You are ascending towards the
surface of the water. The graph models this situation. What is the slope of the line?
Answer is slope of 5
Step by step
You can graph the slope as seen on the attached picture. You go up 30, you go right +6. Slope is y/x, so 30/6, equals 5
You can also use the slope formula
(y2-y1) over (x2-x1)
Using points on the graph
(6,0) and (0,-30)
(-30-0 ) over (0-6)
-30 over -6
-30/-6
= 5
According to the Rational Root Theorem, which statement about f(x) = 12x3 – 5x2 + 6x + 9 is true?
Any rational root of f(x) is a multiple of 12 divided by a multiple of 9.
Any rational root of f(x) is a multiple of 9 divided by a multiple of 12.
Any rational root of f(x) is a factor of 12 divided by a factor of 9.
Any rational root of f(x) is a factor of 9 divided by a factor of 12.
The complete statement is (d) Any rational root of f(x) is a factor of 9 divided by a factor of 12.
How to determine the rational roots?The polynomial is given as:
12x^3 - 5x^2 + 6x + 9
The first term in the above equation is 12 i.e. 12x^3, while the last term is 9
To determine the possible rational roots, we divide the factors of the last term i.e. 12 by the factors of the first term i.e. 12
Hence, the complete statement is (d) Any rational root of f(x) is a factor of 9 divided by a factor of 12.
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Answer:
D
Step-by-step explanation:
I took the test
Seven more than 4 times a number is 43 solve in algebraic equation?
Answer:
x = 9
Step-by-step explanation:
4x + 7 = 43
4x = 36
x = 9
please answer every question here
If the company sells 0 computers, they will not make a profit. They will lose $10780
How to interpret the slope?The function is given as:
P = 490n - 10780
A linear equation is represented as:
P = mn + c
Where
m represents the slope
By comparison, we have:
m = 490
This means that the slope is 490
Hence, the interpretation is
Slope; 490
The company earns $490 per computer sold
How to interpret the vertical intercept?The function is given as:
P = 490n - 10780
A linear equation is represented as:
P = mn + c
Where
c represents the vertical intercept
By comparison, we have:
c = -10780
This means that the vertical intercept is -10780
Hence, the interpretation is
Vertical intercept; -10780
If the company sells 0 computers, they will not make a profit. They will lose $10780
How to interpret the horizontal intercept?The function is given as:
P = 490n - 10780
A linear equation is represented as:
P = mn + c
Where
-c/m represents the horizontal intercept
By comparison, we have:
-c/m = 10780/490
-c/m = 22
This means that the horizontal intercept is 22
Hence, the interpretation is
Horizontal intercept; 22
If the company sells 22 computers, they will break even. They will earn $0
How to evaluate P when n = 46We have:
P = 490n - 10780
This gives
P = 490* 46 - 10780
P = 11760
If the company sells 46 computers, they will earn $11760
How to evaluate n when P = 15190We have:
P = 490n - 10780
This gives
15190 = 490n - 10780
490n = 15190+10780
490n = 25970
n = 53
The company will earn $15190, if they sell 53 computers
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For f(x) = 4x+1 and g(x)=x²-5, find (f-g)(x).
Answer: -x² + 4x + 6
Given:
f(x) = 4x + 1
g(x) = x² - 5
Solve:
= (f - g)(x)
= f(x) - g(x)
= 4x + 1 - (x² - 5)
= 4x + 1 - x² + 5
= -x² + 4x + 6
Answer:
(f-g) (x) = 4x+1 - x² + 5 = -x² + 4x + 6
Step-by-step explanation:
Explanation can be given if needed in the comments (ㅅ´ ˘ `)
Given that a function, g, has a domain of -20 ≤ x ≤ 5 and a range of -5 ≤ g(x) ≤ 45 and that g(0) = -2 and g(-9) = 6, select the statement that could be true for g.
A statement which could be true for g is that: A. g(-13) = 20.
What is a domain?A domain can be defined as the set of all real numbers for which a particular function is completely defined.
How to determine the true statement?Since the domain of this function is given by -20 ≤ x ≤ 5, it simply means that the value of x must between -20 and 5. Also, with a range of -5 ≤ g(x) ≤ 45, the value of x must between -5 and 45.
By extrapolating the function, we can deduce that:
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Complete Question:
Given that a function, g, has a domain of -20 ≤ x ≤ 5 and a range of -5 ≤ g(x) ≤ 45 and that g(0) = -2 and g(-9) = 6, select the statement that could be true for g.
A. g(-13) = 20
B. g(-4) = -11
C. g(7) = -1
D.g(0) = 2
Without exponents
logc (xy^6z^-4) what is the equivalent expression
By eliminating exponents, the logarithmic expression [tex]\log_{c} x\cdot y^{6}\cdot z^{-4}[/tex] is equivalent to the logarithmic expression [tex]\log_{c} x + 6\cdot \log_{c} y - 4\cdot \log_{c} z[/tex].
How to simplify logarithmic functions
In this problem we are supposed to eliminate all exponents of a logarithmic function by applying any of the following properties:
㏒ x · y = ㏒ x + ㏒ y㏒ x/y = ㏒ x - ㏒ y㏒ yˣ = x · ㏒ yNow, we proceed to simplify the function:
[tex]\log_{c} x\cdot y^{6}\cdot z^{-4}[/tex]
[tex]\log_{c} x + \log_{c} y^{6} + \log_{c} z^{-4}[/tex]
[tex]\log_{c} x + 6\cdot \log_{c} y - 4\cdot \log_{c} z[/tex]
By eliminating exponents, the logarithmic expression [tex]\log_{c} x\cdot y^{6}\cdot z^{-4}[/tex] is equivalent to the logarithmic expression [tex]\log_{c} x + 6\cdot \log_{c} y - 4\cdot \log_{c} z[/tex].
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A Submarine goes 23 000M deep into the sea
The pressure of the submarine at a depth of 23000 meters is 2.3575 * 10⁸ N/m²
What is an equation?An equation is an expression that shows the relationship between two or more variables and numbers.
Pressure = density * acceleration due to gravity (g) * depth
g = 10 m/s², hence:
Pressure = 1025 * 10 * 23000 = 2.3575 * 10⁸ N/m²
The pressure of the submarine at a depth of 23000 meters is 2.3575 * 10⁸ N/m²
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A bank gets an average of 12 customers per hour. Assume the variable follows a Poisson distribution. Find the probability that there will be 4 or more customers at this bank in one hour.
Using the Poisson distribution, there is a 0.9978 = 99.78% probability that there will be 4 or more customers at this bank in one hour.
What is the Poisson distribution?In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by:
[tex]P(X = x) = \frac{e^{-\mu}\mu^{x}}{(x)!}[/tex]
The parameters are:
x is the number of successese = 2.71828 is the Euler number[tex]\mu[/tex] is the mean in the given interval.A bank gets an average of 12 customers per hour, hence the mean is [tex]\mu = 12[/tex].
The probability that there will be 4 or more customers at this bank in one hour is:
[tex]P(X \geq 4) = 1 - P(X < 4)[/tex]
In which:
P(X < 4) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3)
Then:
[tex]P(X = x) = \frac{e^{-\mu}\mu^{x}}{(x)!}[/tex]
[tex]P(X = 0) = \frac{e^{-12}12^{0}}{(0)!} \approx 0[/tex]
[tex]P(X = 1) = \frac{e^{-12}12^{1}}{(1)!} \approx 0[/tex]
[tex]P(X = 2) = \frac{e^{-12}12^{2}}{(2)!} = 0.0004[/tex]
[tex]P(X = 3) = \frac{e^{-12}12^{3}}{(3)!} = 0.0018[/tex]
Then:
P(X < 4) = P(X = 0) + P(X = 1) + P(X = 2) + P(X = 3) = 0 + 0 + 0.0004 + 0.0018 = 0.0022.
[tex]P(X \geq 4) = 1 - P(X < 4) = 1 - 0.0022 = 0.9978[/tex]
0.9978 = 99.78% probability that there will be 4 or more customers at this bank in one hour.
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A. Reflection around the x-axis:
1. A (5, 1)→ A'
2. B (1, 3) B¹.
3. C (-2, 2)→ C'.
4. D (-5, 4) D'
B. Reflection around the y-axis:
1. A (5, 1)→ A'
2. B (1, 3) B¹.
3. C (-2, 2)→ C'_
4. D (-5, 4) D'
Part A
1) (5, -1)
2) (1, -3)
3) (-2, -2)
4) (-5, -4)
Part B
1) (-5, 1)
2) (-1, 3)
3) (2, 2)
4) (5, 4)
Which expression is equivalent to the following complex fraction?
1 minus StartFraction 1 Over x EndFraction divided by 2
The equivalent expression of [tex]1 - \frac{1}{x} \div 2[/tex] is [tex]\frac{2x - 1}{2x}[/tex]
How to determine the equivalent expression?The expression is given as:
1 minus StartFraction 1 Over x EndFraction divided by 2
Rewrite properly as:
[tex]1 - \frac{1}{x} \div 2[/tex]
Express the division as product
[tex]1 - \frac{1}{x} \times \frac 12[/tex]
Evaluate the product
[tex]1 - \frac{1}{2x}[/tex]
Take the LCM
[tex]\frac{2x - 1}{2x}[/tex]
Hence, the equivalent expression of [tex]1 - \frac{1}{x} \div 2[/tex] is [tex]\frac{2x - 1}{2x}[/tex]
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pls can solve this question . thanks
Which statement is NOT true about Euclidean geometry?
F. The shortest distance between two points is a straight line.
G. Basic geometric elements are points, lines, and planes.
H. Parallel lines may intersect.
J. The sum of the measures of any triangle always equals 180 degree.
Answer: H. Parallel lines may intersect.
Step-by-step explanation:
By definition, parallel lines never intersect.