Answer:
6n + 7 = 7n
Step-by-step explanation:
Number of students involved in sports = 5n + 7
Number of students involved in student council = n
Number of students involved in sports and student council = (5n + 7) + n = 5n + 7 + n = 6n + 7
Number of students involved in band = 3n - 2
Number of students involved in drama club = 2(2n + 1)
Number of students involved in band and drama club = (3n - 2) + 2(2n + 1) = 3n - 2 + 4n + 2 = 7n
Equation to model number of students involved in sports and student council which equal number of students involved in band and drama club:
6n + 7 = 7n
7. A scuba diver's depth in yards as a function of time in minutes (x) is
represented by the equation d(x) = 12x² - 144x.
a. What was the deepest the diver went?
b. How long did it take the diver to return to the surface?
c. How deep was the diver after one minute?
a) The deepest that the diver went is of: 432 yards deep.
b) It took 12 minutes for the diver to return to the surface.
c) After one minute, the diver was 132 yards deep.
How to obtain the features?The quadratic function modeling the diver's height after x seconds is given as follows:
d(x) = 12x² - 144x.
The coefficients are given as follows:
a = 12, b = -144, c = 0.
The x-coordinate of the vertex is given as follows:
x = -b/2a
x = 144/24
x = 6.
Item a:
As a > 0, in item a, the minimum height is given as follows:
d(6) = 12(6)² - 144(6)
d(6) = -432 feet.
Item b:
The roots of the function, in item b, are obtained as follows:
12x² - 144x = 0
12x(x - 12) = 0
Hence:
12x = 0 -> x = 0.x - 12 = 0 -> x = 12.12 - 0 = 12, hence it took 12 minutes for the diver to return to the surface.
Item c:
After one minute, the depth of the diver, in item c, is given as follows:
d(1) = 12(1)² - 144
d(1) = -132 yards.
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Which expression represents, five times the quotient of two numbers?
A. 5+rt
B. 5%r/t
C. r/5t
D. 5(r/t)
PLZ HELP
Answer:
Five times the quotient of two numbers
5*( r/t)
Step-by-step explanation:
5 times the qoutient of 2 numbers is 5+rt
What do I do?
Brief Calculus Question: Find Each limit (if it exist)
For the given function the value of limits are
\(\lim _{x\to 0^-}\left(f\left(x\right)\right)\) is 5
\(\lim _{x\to 0^+}\left(f\left(x\right)\right)\) is 0
\(\lim _{x\to 0}\left x^2+5\)is 5
The given function is f(x)= x²+5, when x≤0
f(x)=2x when x>0
\(\lim _{x\to 0^-}\left(f\left(x\right)\right)\)
Which is \(\lim _{x\to 0^-}\left x^2+5\)
The given limit is a left hand limit as there is minus in the limits
When we apply x as 0 we get the value 5
Now \(\lim _{x\to 0^+}\left(f\left(x\right)\right)\)
So \(\lim _{x\to 0^+}\left 2x\)
The given limit is a right hand limit as there is positive in the limits
When we apply x as 0 we get 0
Now \(\lim _{x\to 0}\left(f\left(x\right)\right)\)
Which is \(\lim _{x\to 0}\left x^2+5\)
We get 5
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is is 6 2/7 rational or irrational
is -19 rational or irrational
is -√100 rational or irrational
Step-by-step explanation:
6 2/7is rational
-19is rational but next I dont know
Simplify: 12 + 9x
help
Answer:
21x
Step-by-step explanation:
Answer:
yea
Step-by-step explanation:
To be honest, I really don’t understand this and need someone to help me out.
Answer:
A.
Explaintion:
n=13. 13+2 = 15
I hope this helps ( :
Answer: B
Step-by-step explanation:
because 4 is the number of (n) plus the 2
Please help ASAP! I will mark Brainliest! Please answer CORRECTLY! No guessing! Show your work!
Answer:
P represents the population in year 0
Step-by-step explanation:
The exponential growth function is f(x) = a (1 + r)^t, where a is the initial
amount (at t = 0), (1 + r) is the factor of growth , r is the rate of growth
in decimal ant is the time of growth
the function C(t) = P(1 + r)^t represents the population of
centerville at year t, where P is the initial population and r is the
rate of increase
If your investment is increased 10% annually, then that means
each year, your total has multiplied itself by 110% (the growth factor
is 1 + 10/100 = 1.1)
(1 + r) is the factor grows each year
C(t) = P(1 + r)^t
C depends on P(starting population) , r(the increasing rate and
t(the time in year)
r is the rate of increase means the percentage of increasing , then
0 < r < 1
r is not less than 0
P is the initial amount when t = 0
P represents the population in year 0
Answer:
P represents the population in year 0
Step-by-step explanation:
Pls help I will give points easy question if it’s wrong I won’t give points
Answer:
The scale factor is 3
Step-by-step explanation:
7 times 3= 21
5 times 3= 15
9 times 3= 27
Therefore the scale factor is three
need heeeelp please
Answer: \(\Large\boxed{x=-\frac{4}{5} }\)
Step-by-step explanation:
Given equation
\(-9+log_{4}(-5x)=-8\)
Add 9 on both sides
\(-9+log_{4}(-5x)+9=-8+9\)
\(log_{4}(-5x)=1\)
Simplify the logarithm
\(-5x=4^1\)
\(-5x=4\)
Divide -5 on both sides
\(-5x\div-5=4\div-5\)
\(\Large\boxed{x=-\frac{4}{5} }\)
Hope this helps!! :)
Please let me know if you have any questions
Solve for k.
k/4+ 3= 14
Answer:
k/4+3=14
First you need to isolate the variable.
multiply both sides by 4
I NEED HELP WITH THIS QUESTION
Answer:
y= 7 and -1
Step-by-step explanation:
Problem’s in the image
The growth rate function indicates that the number of years The Iron Man's net worth will reach the net worth of T'Challa is about 87 years
What is a growth rate?The growth rate is the rate of growth of a function with regards to the input variable.
T'Challa's net worth in the Marvel comics = 80 trillion (8 × 10¹³) Dollars
The Iron Man's net worth = 20 billion (2 × 10¹⁰) Dollars
The growth rate per annum of The Iron Man's net worth = 10% per annum
The number of years it will take to reach T'Challa can therefore, be found as follows;;
(2 × 10¹⁰) × (1 + 0.1)ˣ = (8 × 10¹³)
(1 + 0.1)ˣ = (8 × 10¹³)/(2 × 10¹⁰)
x·ln(1 + 0.1) = ln((8 × 10¹³)/(2 × 10¹⁰))
x = (ln((8 × 10¹³)/(2 × 10¹⁰)))/(ln(1 + 0.1)) ≈ 87 years
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Q
100%
e
3
Move values into the boxes to create an equation that represents "four more than x is twelve."
4
N
12
16
The unknown number if "four more than x is twelve." is 8
What is an equationEquations are expressions separated by an equal to sign. From the given information, we can say:
Let the unknown number be "x"four more than x is expressed as x + 4If the result of the expression is 12, hence 4 + x = 12
Get the value of x
4 + x = 12
x = 12 - 4
x = 8
Hence the unknown number is 8
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A circle has a diameter of 4.5 cm. A larger circle has a diameter of 24
cm. What is the approximate difference in the circumferences of the
two circles?
A 19.5 cm
B. 28.5 cm
C. 61 cm
D. 90 cm
The approximate difference in the circumferences of the two circles is: C. 61 cm.
How to calculate the circumference of a circle?Mathematically, the circumference of a circle can be calculated by using this mathematical expression:
C = 2πr or C = πD
Where:
C represents the circumference of a circle.D represents the diameter of a circle.r represents the radius of a circle.Substituting the given parameters into the circumference of a circle formula, the circumference of the small circle is;
Circumference of circle, C = πD
Circumference of circle, C = 3.14 × 4.5
Circumference of circle, C = 14.13 cm.
For the larger circle, we have:
Circumference of circle, C = 3.14 × 24
Circumference of circle, C = 75.36 cm.
Difference = 75.36 cm - 14.13 cm.
Difference = 61.23 ≈ 61 cm.
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If a train travels at 66 mph for 10 min, what is the distance traveled?
Answer:
11 miles
Step-by-step explanation:
find how many miles per minute
66 / 60 = 1.1
find how many miles in 10 minutes
1.1 • 10 = 11
11 miles
Answer:
11 miles
Step-by-step explanation:
66 miles per hour
Convert minutes to hours
10 minutes * 1 hour/ 60 minutes = 1/6 hour
distance = rate * time
= 66 miles per hour * 1/6 hour
= 11 miles
"Bob is dealing with discrete data and the samples are without replacement. Based on this information, what is the likely probability distribution"
Answer:
discrete probability distribution
Step-by-step explanation:
A discrete probability distribution is a term that describes a form of a probability distribution that is used in a situation where the set of possible outcomes is discrete.
While it also has a tendency to take on a countable number of values, it is a probability distribution where a sample is drawn from a larger population, this sample points possess an empirical distribution that is considered to be discrete, which resulted in information about the population distribution.
Hence, given that Bob is dealing with discrete data and the samples are drawn without replacement, the likely probability distribution is DISCRETE PROBABILITY DISTRIBUTION
The length of a rectangle is 4 inches longer than it is wide. If the area is 32 square inches, what are the dimensions of the rectangle?
Answer:
width = 4in
length = 8in
Step-by-step explanation:
A = LxW = 32
L = W + 4
W(W+4) = 32
W² + 4W - 32 = 0
(W + 8)(W - 4) = 0
W ≠ -8 (dimensions cannot be negative)
W = 4in
L = W+4 = 4+4 = 8in
Rewrite in simplest rational exponent form square root of x times the fourth root of x. Show each step of your process.
Answer:
\( \sqrt[4]{ {x}^{3} } \)
Step-by-step explanation:
\( \sqrt{x} \times \sqrt[4]{x} \\ = {x}^{ \frac{1}{2} } \times {x}^{ \frac{1}{4} } \\ = {x}^{ \frac{1}{2} + \frac{1}{4} } \\ = {x}^{ \frac{3}{4} } \\ = \sqrt[4]{ {x}^{3} } \)
what is the graph of f(x) = 5(2)^x
The graph of the function f(x) = 5(2)^x is an upward-sloping exponential curve that starts at (0, 5) and increases rapidly as x moves to the right, never crossing the x-axis.
The function f(x) = 5(2)^x represents exponential growth. Let's analyze its graph.
As x increases, the value of 2^x grows exponentially. Multiplying it by 5 further amplifies the growth. Here are a few key points to consider:
When x = 0, 2^0 = 1, so f(0) = 5(1) = 5. This is the y-intercept of the graph, meaning the function passes through the point (0, 5).
As x increases, 2^x grows rapidly. For positive values of x, the function will increase quickly. As x approaches positive infinity, 2^x grows without bound, resulting in the function also growing without bound.
For negative values of x, 2^x approaches zero. However, the function is multiplied by 5, so it will not reach zero. Instead, it will approach y = 0, but the graph will never touch or cross the x-axis.
The function is always positive since 2^x is positive for any value of x, and multiplying by 5 does not change the sign.
Based on these observations, we can conclude that the graph of f(x) = 5(2)^x will be an exponential growth curve that starts at (0, 5) and increases rapidly as x moves to the right, never crossing or touching the x-axis.
The graph will have a smooth curve that rises steeply as x increases. The rate of growth will be determined by the base, in this case, 2. The larger the base, the steeper the curve. The function will approach but never reach the x-axis as x approaches negative infinity.
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Jenny charges $12 per day to pet sit. Tyler charges $20 upfront, and then $8 per day to pet sit. Let x be the number of days. Let y be the total cost.
Please I need help???
Answer:14
Step-by-step explanation:
14
Which statement best justifies whether (x – 3) is a factor of the polynomial p(x) = x - 3x? - 2x - 6?
Answer:
It is not a factor
Step-by-step explanation:
It is because p(x)=-12 at x=3
Solve the following equation for n: 4(n-1)=1.5n+5
\(▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪\)
\( \fbox \colorbox{black}{ \colorbox{white}{n} \: \: \: \: \: \: \: \: \colorbox{white}{=} \: \: \: \: \: + \colorbox{white}{3.6}}\)
\( \large \boxed{ \mathfrak{Step\:\: By\:\:Step\:\:Explanation}}\)
Let's solve for n ~
\(4(n - 1) = 1.5n + 5\)\(4n - 4 = 1.5n + 5\)\(4n - 1.5n = 5 + 4\)\(2.5n = 9\)\(n = \dfrac{9}{2.5} \)\(n = \dfrac{90}{25} \)\(n = \dfrac{18}{5} \)\(n \approx3.6\)I hope it helps ~
The function f is given by the table of values shown below.
If function f is shifted vertically down by 2 units to obtain function g, complete the table of values which represents function g.
The table is completed as follows:
x 0 1 2 3
g(x) -2 0 6 24
Given data
x 0 1 2 3
f(x) 0 2 8 26
How to find the points of g(x) representing a vertical shift downwards by 2 unitsvertical shift downwards represents subtraction of the value of the units as required, this is done as follows:
first
0 - 2 = -2
second
2 - 2 = 0
third
8 - 2 = 6
fourth
26 - 2 = 24
This is represented in a tabular form as follows
x 0 1 2 3
g(x) -2 0 6 24
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Find the value of x using the Triangle Angle Bisector Theorem. Show all Work
The Angle Bisector Theorem states that:
\(\frac{|AB|}{|AC|}=\frac{|BD|}{|CD|}\text{.}\)From the diagram, we see that:
• |AB| = 11,
,• |AC| = 9,
,• |BD| = x,
,• |CD| = 7.
Replacing these data in the equation above, we have:
\(\frac{11}{9}=\frac{x}{7}\text{.}\)Solving for x, we get:
\(x=7\cdot\frac{11}{9}=\frac{77}{9}.\)Answer
\(x=\frac{77}{9}\)What should you substitute for x in the second equation (bottom equation) in order to solve the system by the substitution method?
We substitute -1+1/6y for x in the second equation (bottom equation) in order to solve the system by the substitution method.
The given system of equations are 2x-1/3y = -2...(1)
3x+y=1...(2)
We solve this system of equations by using substitution method.
Let us solve for x in equation to substitute it in equation (2).
2x=-2+1/3y
Divide both sides of equation by 2.
x=-1+1/6y
Now plug in the value of x in equation 2.
Hence, we substitute -1+1/6y for x in the second equation (bottom equation) in order to solve the system by the substitution method.
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Enter the rate of change of the table below
This is the table
X. Y
1 73
2 96
3 119
4 142
What is the rate of change
John plays basketball at the local gym. The gym charges a monthly membership fee of $15.00, plus each player pays $2.50 per game to pay for the cost of referees. John wants to spend less than $55 on basketball this month.
15+2.5x <55
Decimal:1.15
classafy the numbers some numbers are more than 1 box numbers are 54,72,84,90,96 sections are divisible by 5 and 9 divisible by 6 and 9 divisable by 2 and 6
collect like terms
-3b cubed subtract 2b cubed
Answer: -5b cubed
Step-by-step explanation: