Answer:
B. 165 degree angle
Step-by-step explanation:
7
3
) The average sneeze can travel 100 mile in 3
seconds. At this rate, how far can it travel in
one minute? (3 seconds =
1
20
minute)
It has a 0.6-mile-per-minute speed limit.
What is the distance?Distance is defined as the product of speed and time.
Given that the distance traveled in 3 seconds is 3/100 miles.
To determine the distance it can travel in 1 minute.
We must first determine the distance traveled in 1 second in order to get the distance traveled in 1 minute.
It can cover 3/100 miles in 3 seconds.
So, in 1 second it can travel = 3/(100)(3) = 1/100 miles.
Now, We know that there are 60 seconds in a minute.
Thus, it can travel in a minute.
⇒ (1/100) × 60
⇒ 60/100
⇒ 6/10
⇒ 0.6 mile
Hence, It has a 0.6 mile per minute speed limit.
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Ryan invested \$4,800$4,800 in an account in the year 1990, and the value has been growing exponentially at a constant rate. The value of the account reached \$6,300$6,300 in the year 1998. Determine the value of the account, to the nearest dollar, in the year 2007.
well, from 1990 to 1998 is 8 years, and we know the amount went from $4800 to $6300, let's check for the rate of growth.
\(\qquad \textit{Amount for Exponential Growth} \\\\ A=P(1 + r)^t\qquad \begin{cases} A=\textit{accumulated amount}\dotfill & \$6300\\ P=\textit{initial amount}\dotfill &\$4800\\ r=rate\to r\%\to \frac{r}{100}\\ t=\textit{years}\dotfill &8\\ \end{cases} \\\\\\ 6300=4800(1 + \frac{r}{100})^{8} \implies \cfrac{6300}{4800}=(1 + \frac{r}{100})^8\implies \cfrac{21}{16}=(1 + \frac{r}{100})^8\)
\(\sqrt[8]{\cfrac{21}{16}}=1 + \cfrac{r}{100}\implies \sqrt[8]{\cfrac{21}{16}}=\cfrac{100+r}{100} \\\\\\ 100\sqrt[8]{\cfrac{21}{16}}=100+r\implies 100\sqrt[8]{\cfrac{21}{16}}-100=r\implies \stackrel{\%}{3.46}\approx r\)
now, with an initial amount of $4800, up to 2007, namely 17 years later, how much will that be with a 3.46% rate?
\(\qquad \textit{Amount for Exponential Growth} \\\\ A=P(1 + r)^t\qquad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{initial amount}\dotfill &4800\\ r=rate\to 3.46\%\to \frac{3.46}{100}\dotfill &0.0346\\ t=years\dotfill &17\\ \end{cases} \\\\\\ A=4800(1 + 0.0346)^{17} \implies A=4800(1.0346)^{17}\implies A \approx 8558.02\)
HELP NOW IT IS 6th GRADE MATH HELPPPPPP
Answer:
S=2t
or
T=1/2 S
PLSSS HELP IF YOU TURLY KNOW THISS
Answer:
A
Step-by-step explanation:
8-3=5
9/10 -4/10 =5/10
since 5/10 can be simplified to 1/2, it is A
what is 4 - (-10) equal too? explain in your own words and why so
Answer:
14
Step-by-step explanation:
When there are 2 -, they both create a +. the brackets are removed and you get 4--10, which is equal to 4+10 which = 14
Please help me find the y-intercept, slope, and how I should write out the equation in y=mx+b form.
Answer:
m = -1/2 b = 4, equation = y = -1/2x + 4, Proportional, Negative slope
Step-by-step explanation:
To find m, see what slope is:
Is negative
for every one to right, goes down 1/2
so -1/2
Intercepts at 4, so b = 4
I can't figure this out, anyone know??!!!
Answer: (a+b)2=9. a2+2ab+b2=9
Step-by-step explanation:
what fraction is equvalent to 5/20
Answer:
1/4
Step-by-step explanation:
5/20
divide the top and bottom by 5
1/4
We could also multiply by the same number on top and bottom
5/20 *2/2 = 10/40
or
5/20 *3/3 = 15/60
The length is not provided and need to find the shaded area
Answer:
Step-by-step explanation:
lower left triangle: 5^2 + x^2 = 13^2
x^2 = 144 => x = 12
So, area of triangle is : (5 * (12-4))*0.5 => 20
Shaded area: (8 *12) -20 => 96 -20
=76 unit^2
Answer:
Area: 98 in^2
Step-by-step explanation:
8-3=5
Triangle: a^2 + b^2 = c^2
a^2 + 5^2 = 13^2
a^2 = 169-25
a = sqrt 144
a = 12
Area: 16in * 8in = 128 in^2
Area rectangle - triangle
Area triangle: (bh)/2
(12*5)/2 = 30 in^2
128 - 30 = 98 in2
Please HELP! The table shows the function f(x). The graphs shows the function g(x). Select from the drop-down menu to correctly compare the growth factors for the exponential functions f(x) and g(x).
Answer:
First of all, what are the options in the drop down menu?
The growth factor of f(x) is 1.1/0.7 = 1.6 times of g(x).
What are some transformations of functions?Suppose we have a function f(x).
f(x) ± d = Vertical upshift/downshift by d units (x, y ±d).
f(x ± c) = Horizontal left/right shift by c units (x - + c, y).
(a)f(x) = Vertical stretch for a > 0, vertical shrink a < 0. (x, ay).
f(bx) = Horizonatal compression b > 0, horizontal stretch for b < 0. (bx , y).
f(-x) = Reflection over y axis, (-x, y).
-f(x) = Reflection over x-axis, (x, -y).
f(x) and g(x) are both exponentially growing functions.
For f(x), when x = 0, f(x) = 2 and when x = 1, f(x) = 3.
let f(x) = \(e^{kx}\).
3 = \(e^k\).
k = ln(3).
k = 1.1
For g(x), x = 0, g(x) = 1, x = 1, g(x) = 2.
Now g(x) = \(e^{kx}\).
2 = \(e^k\).
k = ln(2).
k = 0.7.
So, the growth factor of f(x) is 1.1/0.7 = 1.6 times of g(x).
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What is 0.36... (36 is repeating) expressed as a fraction in simplest form? I got 36/90 and got in simplest form: 2/5. However when I look at other answers they say its 9/25 and 4/11. So how do I calculate this correctly?
What is the slope-intercept formula?
Answer:
To find slope intercept, you must use the substitute term for slope, m, and then use the following equation. ↓
\((y = mx+b)\)
Next, you want to use these terms to help you solve for b. ↓
\(Slope = m\\Points = x, y\\y-intercept = b\)
Answer:
y=mx+b
Step-by-step explanation:
The slope intercept form is y=mx+b
M = slope
B = y-intecept
and when you substitue the numbers for the variables then you have it in slope-intercept formula
I hope it helps! Have a great day!
JellyBeanie~
Solve the given differential equation x^3 y"' - 6y = 0 y(x) = ______ , x > 0
The solution to the given differential equation is:
\(\[y(x)\ =\ a_0 + a_1x + \frac{1}{4}a_1x^4 + \sum_{n=2}^{\infty} \frac{2a_{n-2}}{(n-2)(n-1)}x^{n+3}\]\)
How did we get the value?To solve the given differential equation
\(x^3y'''\ -\ 6y\ =\ 0,\)
we can use the method of power series. Let's assume a power series solution of the form
\(y(x)\ =\ \sum_{n=0}^{\infty} a_nx^n.\)
Differentiating y(x) with respect to x gives:
\(\[y'(x)\ =\ \sum_{n=0}^{\infty} n a_n x^{n-1}\ =\ \sum_{n=0}^{\infty} (n+1) a_{n+1} x^n\]\)
Differentiating again gives:
\(\[y''(x)\ =\ \sum_{n=0}^{\infty} (n+1)na_{n+1}x^{n-1}\ =\ \sum_{n=0}^{\infty} (n+2)(n+1)a_{n+2}x^n\]\)
Differentiating one more time gives:
\(\[y'''(x)\ =\ \sum_{n=0}^{\infty} (n+2)(n+1)na_{n+2}x^{n-1}\ =\ \sum_{n=0}^{\infty} (n+3)(n+2)(n+1)a_{n+3}x^n\]\)
Substituting these expressions into the differential equation, we have:
\(\[x^3 \sum_{n=0}^{\infty} (n+3)(n+2)(n+1)a_{n+3}x^n - 6 \sum_{n=0}^{\infty} a_n x^n\ =\ 0\]\)
Rearranging the terms and combining like powers of x, we get:
\(\[\sum_{n=0}^{\infty} (n+3)(n+2)(n+1)a_{n+3}x^{n+3} - 6 \sum_{n=0}^{\infty} a_n x^n\ =\ 0\]\)
Now, let's equate the coefficients of like powers of x to zero:
For n=0:
\(\[(3)(2)(1)a_3 - 6a_0 = 0 \implies 6a_3 - 6a_0 = 0 \implies a_3 = a_0\]\)
For n=1:
\(\[(4)(3)(2)a_4 - 6a_1 = 0 \implies 24a_4 - 6a_1 = 0 \implies a_4 = \frac{1}{4}a_1\]\)
\(For \: n\geq 2:
\[(n+3)(n+2)(n+1)a_{n+3} - 6a_n = 0 \implies a_{n+3} = \frac{6a_n}{(n+3)(n+2)(n+1)}\]
\)
Now we can write the solution as:
\(\[y(x)\ =\ a_0 + a_1x + \frac{1}{4}a_1x^4 + \sum_{n=2}^{\infty} \frac{6a_{n-2}}{n(n-1)(n-2)}x^{n+3}\]
\)
Simplifying the series, we get:
\(\[y(x)\ =\ a_0 + a_1x + \frac{1}{4}a_
1x^4 + \sum_{n=2}^{\infty} \frac{2a_{n-2}}{(n-2)(n-1)}x^{n+3}\]
\)
Therefore, the solution to the given differential equation is:
\(\[y(x)\ =\ a_0 + a_1x + \frac{1}{4}a_1x^4 + \sum_{n=2}^{\infty} \frac{2a_{n-2}}{(n-2)(n-1)}x^{n+3}\]\)
where a₀ and a₁ are arbitrary constants to be determined based on the initial conditions or boundary conditions given in the problem.
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Please help me ASAP
Answer:
12 -9
Step-by-step explanation:
Look to the ends of each arrow and you will see each number the arrow is on. Hope this helps.
Answer:
\(y=-x+3\)
Step-by-step explanation:
Let's start by defining what slope-intercept form is. Slope-intercept form is:
y=mx+b
Where...
"y" = y-coordinate of any point on the line
"m" = slope of the line
"x" = x-coordinate of any point on the line
"b" = y-intercept (where the line intercepts the y-axis)
Let's start by finding the y-intercept. As stated above, the y-intercept is where the line intercepts the y-axis. Looking at the graph, we can tell that in this case, it is (0, 3).
Note that the y-intercept (b) is represented by ONLY the y-value, which in this case is 3.
Now, let's find the slope. Start by taking ANY two points on the line. Let's use (0, 3) and (1, 2).
The formula for slope is:
\(m=\frac{y_2-y_1}{x_2-x_1}\)
\(y_1, y_2:$ Values for the two y-coordinates\\x_1, x_2:$ Values for the two x-coordinates\)
Substitute the given points into the equation:
\(m=\frac{2-3}{1-0}=\frac{-1}{1}=-1\)
The slope is -1.
Finally, we substitute our slope and y-intercept back into the equation and get:
\(y=-x+3\)
What is the range of the points on the graph?
Answer:16
Step-by-step explanation:
I need help please it’s my hrw
Answer:
Blank 1: 28
Blank 2: 42
Blank 3: 22
Answer: It will take 7 sessions.
Step-by-step explanation:
We already know the 3 blanks from the equation 28x = 42 + 22x
Now to find the answer.
28x = 42 + 22x
Subtract 22x from both sides. This cancels the +22x.
28x - 22x = 42
Subtract 22x from 28x to get 6x
6x = 42
Divide both sides by 6. This undoes the multiplication by 6.
x = 42/6
Divide 42 by 6 to get 7.
x = 7
It will take 7 sessions for the costs to match.
Answer:
[28], [42], [22], the meet at 154 sessions
Step-by-step explanation:
A stadium has fixed expenses of $20,000 per event. Last month it put on three big events and spent $50,000, $35,000, and 40,000 in advertising for them respectively. These events ended up earning a total of $500,000 in revenue. What was the stadium's profit margin last month?
Answer:
315,000
Step-by-step explanation:
(50,000+20,000)+(35,000+20,000)+(40,000+20,000)=185,000
500,000-185,000=315,000
A metal is made from copper, zinc and lead in the ratio 13:6:1 respectively. The mass of zinc is 90kg. Calculate the mass of the metal
Answer:52
Step-by-step explanation:
y
Answer:
let the ratio of zinc be x
6x
mass of the zinc=90kg
6x=90
x=15
for other metals
copper=13x=13*15=195kg
lead=x=15kg
mass of whole metal=195+90+15=300kgStep-by-step explanation:
find the magnitude of a, the magnitude of b and the scalar product of vectors a and b.
The magnitude of a is
\(\lvert a\rvert=\sqrt[]{-5^2+1^2-9^2}=\sqrt[]{25+1+81}=\sqrt[]{107}\)The magnitude of b is
\(\lvert b\rvert=\sqrt[]{-1^2-9^2-1^2}=\sqrt[]{1+81+1}=\sqrt[]{83}\)The scalar product of a. b is
\(a.b=(-5i+j-9k).(-i-9j-k)\)Find the distance between the points (-5,-2) and (7,3).
Answer:
Step-by-step explanation:
A slug travels 3 centimeters in 3 minutes. A snail travels 6 centimeters in 6 minutes. Both travel at constant speeds. Mai says, “The snail was traveling faster because it went a greater distance.” Do you agree with Mai's reasoning
Answer:
yes
Step-by-step explanation:
a,p,e,x
valuate the surface integral ∬ SFdS for the given vector field F and the oriented surface S. In other words, find the flux of F across S.For closed surfaces, use the positive (outward} orientation.F
(
x
,
y
,
z
)
=
x
y
i
+
y
z
j
+
z
x
k
S
is part of the paraboloid z
=
4
−
x
2
−
y
2
that lies above the square 0
≤
x
≤
1
,
0
≤
y
≤
1
and has an upward orientation.
The flux of F across S is -1/6.
To evaluate the surface integral of F over S, we first need to parameterize the surface S. In this case, S is part of the paraboloid z = 4 - x² - y² that lies above the square 0 ≤ x ≤ 1, 0 ≤ y ≤ 1 and has an upward orientation. We can parameterize S using two variables u and v as follows:
r(u,v) = (u, v, 4 - u² - v²)
where 0 ≤ u ≤ 1 and 0 ≤ v ≤ 1.
Next, we need to find the normal vector to the surface S. Since the surface has an upward orientation, the normal vector should also point upward. We can find the normal vector by taking the cross product of the partial derivatives of r with respect to u and v:
n(u,v) = ∂r/∂u x ∂r/∂v
= (-2u, -2v, 1)
The flux of F across S is then given by the surface integral:
∬ S F dS = ∫∫ F(r(u,v)) · n(u,v) dS
where dS is the surface area element given by dS = ||∂r/∂u x ∂r/∂v|| du dv.
Substituting the given vector field F and the parameterization r(u,v), we have:
∬ S F dS = ∫∫ (xy i + yz j + zx k) · (-2u, -2v, 1) ||∂r/∂u x ∂r/∂v|| du dv
= ∫∫ (-2uxy - 2vyz + 2zx) ||∂r/∂u x ∂r/∂v|| du dv
= ∫∫ (-2u²v - 2v³ + 8uv) du dv
We can evaluate this integral using the limits of integration for u and v, which are both from 0 to 1:
∬ S F dS = ∫∫ (-2u²v - 2v³ + 8uv) du dv
= ∫ ∫ (-2u²v - 2v³ + 8uv) du dv
= [-1/3 + 1/2 - 2/3] = -1/6
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If A and B are independent events with P(A) = 0.35 and P(B) = 0.20, then, P(A U B) = _____.
SHOW ALL WORK
Answer:0.48
Step-by-step equation:
Which are the coordinates of the blank?
Answer:
its C. (3,7)
Step-by-step explanation:
Find the value of 1 + 3 (5 - 17) ÷ 2 · 6
Answer:
-4
Step-by-step explanation:
5 - 17 = -12
1 + 3 = 4
-12 x 4 = -48
2 x 6 = 12
-48 ÷ 12 = -4
The solution of expression is,
⇒ - 107
We have to given that,
An expression to simplify,
1 + 3 (5 - 17) ÷ 2 · 6
Now, Apply the BODMAS rule and simplify the expression as,
⇒ 1 + 3 (5 - 17) ÷ 2 · 6
⇒ 1 + 3 · - 12 ÷ 2 · 6
⇒ 1 + 3 · - 6 · 6
⇒ 1 - 108
⇒ - 107
Therefore, The solution is,
⇒ - 107
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1. A car engine is 25% efficient. How much input energy produces 100 J of useful energy?
Answer:
400 J
Step-by-step explanation:
Answer:
400 J
Step-by-step explanation:
. estimate a regression equation for sales as a function of population, advertising in the current year, and advertising in the previous year. can you expect predictions of sales in future years to be very accurate if they are based on this regression equation? explain.
It's also worth noting that there may be other factors that impact sales that are not included in the regression equation. For example, changes in consumer preferences, economic conditions, or competition from other businesses could all have an impact on sales that is not captured by the variables included in the equation.
So while a regression equation can be a useful tool for predicting sales, it's important to keep in mind that it's not a perfect predictor and should be used in conjunction with other information and analysis. To estimate a regression equation for sales as a function of population, advertising in the current year, and advertising in the previous year, you would need to gather data on sales, population, and advertising expenditures for both the current and previous years. Once you have this data, you can use regression analysis to determine how much of the variation in sales can be explained by population and advertising. As for whether or not predictions of sales in future years would be very accurate based on this regression equation, it really depends on how well the equation fits the data.
If the equation has a high R-squared value (meaning that a large percentage of the variation in sales can be explained by the independent variables), then predictions based on the equation are likely to be more accurate. However, if the equation has a low R-squared value, then predictions based on the equation may not be very accurate.
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1.Evaluate s ÷ t if s = 1.43 and t = 1.3.
2. Evaluate (p + q) ÷ r if p = 0.7, q = 1.4, and r = 2.5.
3.Evaluate (a + b) ÷ c if a = 0.016, b = 0.008, and c = 7.5.
please show how you got the answer and number them
how to find the roots of a third degree polynomial
To find the roots of a third-degree polynomial, also known as a cubic polynomial, we can use a method called factoring or apply the cubic formula.
The first step is to check if there are any common factors that can be factored out. Next, we can use the rational root theorem to determine potential rational roots. By applying synthetic division or long division, we can divide the polynomial by the potential roots to see if they are indeed roots.
If a rational root is found, we can then use synthetic division to factor out the corresponding quadratic equation. Finally, we can solve the quadratic equation using methods like factoring, completing the square, or using the quadratic formula to find the remaining roots.
It's important to note that not all cubic polynomials can be easily factored or solved algebraically. In such cases, numerical methods or approximation techniques may be used to find the roots.
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To find the roots of a third degree polynomial, you can follow these steps: 1) Check for rational roots using the Rational Root Theorem. 2) Use synthetic division to divide the polynomial by a linear factor. 3) Factor the resulting quadratic equation. 4) Solve for the roots by setting each factor equal to zero.
To find the roots of a third degree polynomial, we can follow these steps:
First, check if there are any rational roots using the Rational Root Theorem. The Rational Root Theorem states that if a polynomial has a rational root, it will be of the form p/q, where p is a factor of the constant term and q is a factor of the leading coefficient.Use synthetic division to divide the polynomial by a linear factor. Synthetic division is a method used to divide a polynomial by a linear factor, which helps us find the remaining quadratic equation.Factor the quadratic equation obtained from synthetic division. This can be done by using the quadratic formula or by factoring further if possible.Once the quadratic equation is factored, we can find the roots by setting each factor equal to zero and solving for the variable.Remember, the Fundamental Theorem of Algebra states that every polynomial equation of degree n has exactly n complex roots, counting multiplicities.
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Carson is a waiter at a restaurant. Each day he works, Carson will make a guaranteed
wage of $35, however the additional amount that Carson earns from tips depends on
the number of tables he waits on that day. From past experience, Carson noticed that
he will get about $6 in tips for each table he waits on. How much would Carson
expect to earn in a day on which he waits on 18 tables? How much would Carson
expect to make in a day when waiting on t tables?
The total amount earned when he waits 18 tables is $143
The total amount earned when he waits t tables is $35 + $6t
What is the total amount earned?The equation that can be used to determine the total amount Carson earns is a linear equation. A linear equation is an equation that when drawn on a graph yields a straight line.
A linear equation increases by a constant amount. The highest power of a variable in a linear equation is 1.
The form of a linear equation is y = a + bx
Where:
a = y-intercept b = x interceptTotal amount earned = guaranteed wage + (tip per table x total number of tables he waits)
Total amount earned when he waits 18 tables: $35 + ($6 x 18)
$35 + $108 = $143
Total amount earned when he waits t tables: $35 + ($6 x t)
$35 + $6t
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