9514 1404 393
Answer:
y = 0.06x(20 -x)y = 5√(x+5) +4y = (x -9)^2 -76; (9, -76); 9±√76; 5Step-by-step explanation:
1.If we assume the ball was kicked from the origin and that it follows a parabolic curve, the equation can be written ...
y = -kx(x -20)
for some value of k that makes the maximum be 6. The maximum will occur at the value of x that is halfway between the points where the ball is on the ground, so at x=10. Then our value of k is such that ...
6 = k(10)(20 -10) = 100k
k = 6/100 = 0.06
The equation describing the ball's flight is ...
y = 0.06x(20 -x)
A graph is attached.
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2.The translated square root function will have a vertical multiplier k that will make it pass through the given point. The parent function f(x) = √x can be translated so its vertex moves from (0, 0) to (-5, 4) by ...
g(x) = 4 +f(x+5)
Applying the scale factor k gives ...
g(x) = k·√(x +5) +4
We want g(20) = 29, so ...
29 = k·√(20 +5) +4
25 = 5k . . . . subtract 4
5 = k . . . . . . divide by 5
The equation of the function is ...
y = 5√(x +5) +4
__
3.We assume your "graphing form" is "vertex form", as that form is generally conducive to graphing.
We can complete the square by adding and subtracting the square of half the x-coefficient:
y = x^2 -18x +9^2 +5 -9^2
y = (x -9)^2 -76 . . . . . equation
vertex: (9, -76)
x-intercepts: 9±√76 ≈ {0.2822, 17.1778}
y-intercept: 5 . . . . (the constant in the given equation)
_____
Additional comment
When the quadratic is written in vertex form ...
y = a(x -h)^2 +k
the x-intercepts are h±√(-k/a).
Juanita has saved 10% of the money that she needs to buy a new bicycle.
If she has saved $22, how much money does the bicycle cost?
How to find the GCF 2x-4y+6z
Answer:
inding the Greatest Common Factor (GCF): To find the GCF of two expressions:
Factor each coefficient into primes. Write all variables with exponents in expanded form.
List all factors—matching common factors in a column. ...
Bring down the common factors that all expressions share.
Multiply the factors
Answer:
Step-by-step explanation:
2x = 2*x
4y = 2 *2 *y
6z = 2* 3 * z
GCF = 2
GCF is the greatest common factor. Here 2 is common factor
2x - 4y + 6z = 2*(x - 2y + 3z)
Solve the equation 6m + 10n = 12 for m.
-IO
Answer:
N=7.2
Step-by-step explanation:
6x-10= -60
10x7.2= 72
72+-60=12
So N=7.2
Write the equation of the line passing through the points (-7, 5) and (7, 1)
Answer:
y = -2/7(x) + 3
Step-by-step explanation:
The equation of a line can be stated as y = mx + b, where m is the slope and b is the y-intercept (the value of the function when x = 0). To find the equation of the line, we'll start by finding the slope.
The slope can be expressed as [tex]\frac{y_{2} - y_{1}}{x_{2}-{x_1}}[/tex]
Substituting in our coordinates, we have:
[tex]m = \frac{1 - 5}{7 - (-7)} = \frac{-4}{7 + 7} = \frac{-4}{14}[/tex], which can be simplified to [tex]-\frac{2}{7}[/tex]
Plugging that back into our equation, we have y = [tex]-\frac{2}{7}[/tex]x + b
Now, to find b, we substitute in one of our sets of coordinates. Let's use (-7, 5)
x = -7 and y = 5, which gives us:
[tex]5 = -\frac{2}{7} (-7) + b[/tex]
[tex]-\frac{2}{7} (-7) = 2[/tex], which gives us:
5 = 2 + b
Subtracting 2 from both sides, we get:
3 = b
Plugging that back into our equation, we have [tex]y = -\frac{2}{7} x + 3[/tex]
Identify the factors of the following numbers 1. 40- 2. 54- 3 63 - 4.70 - 6. 85 -
Does this graph represent a function? Why or why not?
Answer:
yes
Step-by-step explanation:
you can use the vertical line test
Which of the following fraction below is an IMPROPER FRACTION?
a. 1/3
b. 16/5
c. 2/3
d. 4/27
Does anyone know this?
Answers:
A. b=4/3, c=12
B. b=4/3, c=2/3
C. b=8/3, c=16/3
D. b=8/3, c=16
Answer:
the answer will be choice D
as we can see that the triangle have angles measuring 30 60 and 90 so we will use the 30-60-90 rule
you can look up the explantion about the rule online
Identify the focus, directrix, an axis of symmetry of (f)x=1/16^2
Answer:
Focus is (0,64)
Step-by-step explanation:
Directrix is y = -64
Axis of Symmetry is x = 0
If it takes 2.5 gallons of milk to make 2 pounds of cheese. How many pounds of cheese can John make with 50 gallons of milk?
Answer:
21 pounds
tell me if it helped :P
Step-by-step explanation:
What is 5/8÷1 and 1/3
let's firstly convert the mixed fractions to improper fractions and then divide.
[tex]\stackrel{mixed}{1\frac{1}{3}}\implies \cfrac{1\cdot 3+1}{3}\implies \stackrel{improper}{\cfrac{4}{3}} \\\\[-0.35em] ~\dotfill\\\\ \cfrac{5}{8}\div 1\frac{1}{3}\implies \cfrac{5}{8}\div \cfrac{4}{3}\implies \cfrac{5}{8}\cdot \cfrac{3}{4}\implies \cfrac{15}{32}[/tex]
Help this is due today!!!!!!!
A swimming club is conducting a vote to choose a mascot. There are 164 club members who want a dolphin for their mascot. These members represent 82% of the total number of club members. How many club members are there?
Group of answer choices
134
200
136
2,000
Step-by-step explanation:
82÷100= 0.82
0.82×164= 134.48 /134
2x² - x + 6 is subtracted from x² + 3x - 2, the result is
Answer:
-x² + 4x - 8
Step-by-step explanation:
Given: 2x² - x + 6 is subtracted from x² + 3x - 2
Rewriting: (x² + 3x - 2) - (2x² - x + 6)
Distrubte negative: x² + 3x - 2 - 2x² + x - 6
Combine like terms: -x² + 4x - 8
Answer: -x² + 4x - 8
Hope this helps, have a nice day :D
HELP I NEED HELP ON THIS QUESTION ITS TIMED
Answer:
The answer is A
Step-by-step explanation:
When you reflect something over the x-axis all of the negative y coordinates become positive.
(d). Use an appropriate technique to find the derivative of the following functions:
(i) y = √4+3x²/ (x² +1)¹/³ . Pie^x
(ii) xy^3/1+ sec y= e^xy
[Verify your answer by MATHEMATICA and attach the printout of the commands and output]
(i) I would first suggest writing this function as a product of the functions,
[tex]\displaystyle y = fgh = (4+3x^2)^{1/2} (x^2+1)^{-1/3} \pi^x[/tex]
then apply the product rule. Hopefully it's clear which function each of f, g, and h refer to.
We then have, using the power and chain rules,
[tex]\displaystyle \frac{df}{dx} = \frac12 (4+3x^2)^{-1/2} \cdot 6x = \frac{3x}{(4+3x^2)^{1/2}}[/tex]
[tex]\displaystyle \frac{dg}{dx} = -\frac13 (x^2+1)^{-4/3} \cdot 2x = -\frac{2x}{3(x^2+1)^{4/3}}[/tex]
For the third function, we first rewrite in terms of the logarithmic and the exponential functions,
[tex]h = \pi^x = e^{\ln(\pi^x)} = e^{\ln(\pi)x}[/tex]
Then by the chain rule,
[tex]\displaystyle \frac{dh}{dx} = e^{\ln(\pi)x} \cdot \ln(\pi) = \ln(\pi) \pi^x[/tex]
By the product rule, we have
[tex]\displaystyle \frac{dy}{dx} = \frac{df}{dx}gh + f\frac{dg}{dx}h + fg\frac{dh}{dx}[/tex]
[tex]\displaystyle \frac{dy}{dx} = \frac{3x}{(4+3x^2)^{1/2}} (x^2+1)^{-1/3} \pi^x - (4+3x^2)^{1/2} \frac{2x}{3(x^2+1)^{4/3}} \pi^x + (4+3x^2)^{1/2} (x^2+1)^{-1/3} \ln(\pi) \pi^x[/tex]
[tex]\displaystyle \frac{dy}{dx} = \frac{3x}{(4+3x^2)^{1/2}} \frac{1}{(x^2+1)^{1/3}} \pi^x - (4+3x^2)^{1/2} \frac{2x}{3(x^2+1)^{4/3}} \pi^x + (4+3x^2)^{1/2} \frac{1}{ (x^2+1)^{1/3}} \ln(\pi) \pi^x[/tex]
[tex]\displaystyle \frac{dy}{dx} = \boxed{\frac{\pi^x}{(4+3x^2)^{1/2} (x^2+1)^{1/3}} \left( 3x - \frac{2x(4+3x^2)}{3(x^2+1)} + (4+3x^2)\ln(\pi)\right)}[/tex]
You could simplify this further if you like.
In Mathematica, you can confirm this by running
D[(4+3x^2)^(1/2) (x^2+1)^(-1/3) Pi^x, x]
The immediate result likely won't match up with what we found earlier, so you could try getting a result that more closely resembles it by following up with Simplify or FullSimplify, as in
FullSimplify[%]
(% refers to the last output)
If it still doesn't match, you can try running
Reduce[<our result> == %, {}]
and if our answer is indeed correct, this will return True. (I don't have access to M at the moment, so I can't check for myself.)
(ii) Given
[tex]\displaystyle \frac{xy^3}{1+\sec(y)} = e^{xy}[/tex]
differentiating both sides with respect to x by the quotient and chain rules, taking y = y(x), gives
[tex]\displaystyle \frac{(1+\sec(y))\left(y^3+3xy^2 \frac{dy}{dx}\right) - xy^3\sec(y)\tan(y) \frac{dy}{dx}}{(1+\sec(y))^2} = e^{xy} \left(y + x\frac{dy}{dx}\right)[/tex]
[tex]\displaystyle \frac{y^3(1+\sec(y)) + 3xy^2(1+\sec(y)) \frac{dy}{dx} - xy^3\sec(y)\tan(y) \frac{dy}{dx}}{(1+\sec(y))^2} = ye^{xy} + xe^{xy}\frac{dy}{dx}[/tex]
[tex]\displaystyle \frac{y^3}{1+\sec(y)} + \frac{3xy^2}{1+\sec(y)} \frac{dy}{dx} - \frac{xy^3\sec(y)\tan(y)}{(1+\sec(y))^2} \frac{dy}{dx} = ye^{xy} + xe^{xy}\frac{dy}{dx}[/tex]
[tex]\displaystyle \left(\frac{3xy^2}{1+\sec(y)} - \frac{xy^3\sec(y)\tan(y)}{(1+\sec(y))^2} - xe^{xy}\right) \frac{dy}{dx}= ye^{xy} - \frac{y^3}{1+\sec(y)}[/tex]
[tex]\displaystyle \frac{dy}{dx}= \frac{ye^{xy} - \frac{y^3}{1+\sec(y)}}{\frac{3xy^2}{1+\sec(y)} - \frac{xy^3\sec(y)\tan(y)}{(1+\sec(y))^2} - xe^{xy}}[/tex]
which could be simplified further if you wish.
In M, off the top of my head I would suggest verifying this solution by
Solve[D[x*y[x]^3/(1 + Sec[y[x]]) == E^(x*y[x]), x], y'[x]]
but I'm not entirely sure that will work. If you're using version 12 or older (you can check by running $Version), you can use a ResourceFunction,
ResourceFunction["ImplicitD"][<our equation>, x]
but I'm not completely confident that I have the right syntax, so you might want to consult the documentation.
Suppose a poll is taken that shows that 530 out of 1000 randomly selected, independent people believe the rich should pay more taxes than they do. Test the hypothesis that a majority
(more than 50%) believe the rich should pay more taxes than they do. Use a significance level of 0.06.
State the null and alternative hypotheses.
someone please help me due in an hour
Answer:
9 players rushed 20 or more yards this season
Step-by-step explanation:
Which logarithmic equation is equivalent to the exponential equation below?
e^4x = 5
Step-by-step explanation:
e^4x = 5
x = 1/4 × ln(5)
x ÷ 1/4 = ln(5)
x.4 = ln(5)
4x = ln(5)
ln(5) = 4x
Option → D
I need help with this one and don't understand what it is trying to say!
Answer:
A
Step-by-step explanation:
Each colored box cost 0.01
Answer:
A
Step-by-step explanation:
Each colored box cost 0.01
please help me thank you
Answer:
3
Step-by-step explanation:
The slope is 3. It's the correct answer.
Slope of 4/5 on line graph
Answer:
0
Step-by-step explanation:
Because it is a line parallel to x-axis.
3.
Which of the following is the graph of y = 5x2 + 2?
Answer:
Graph A
Step-by-step explanation:
Graph the parabola using the direction, vertex, focus, and axis of symmetry.
Direction: Opens Up
Vertex: ( 0 , 2 )
Focus:
( 0 , 41 /20 )
Axis of Symmetry: x = 0
Directrix: y = 39 /20
x y
− 2 22
− 1 7
0 2
1 7
2 22
Which of the following expressions are equivalent?
Answer:
all of the expressions are equivalent
Step-by-step explanation:
if you simplify each expression, you get the same answer for all of them
There were 5 7/10 of water in a bucket. Mollie spilled some of the water. Then she added an additional 1 5/10 liters of water to the bucket. After that, there was 6 4/10 liters of water in the bucket. How much did Mollie spill?
Answer:
8/10
Step-by-step explanation:
57/10 add 15/10=72/1072/10 subtract 64/10=8/10Marcus works at a clothing store and gets an employee discount. The price
he pays can be modeled by the function d(c) = C -0.10c, where c is the original price
of the item. Find d(32) and describe what this means in the context of the problem.
(please answer i need asap)
9514 1404 393
Answer:
d(32) = 28.80
the price Marcus pays on an item with an original price of 32
Step-by-step explanation:
d(32) = 32 -0.1(32)
d(32) = 28.8
The problem statement tells you d(32) is the price Marcus pays when the original price is 32.
perpendicular to 8x - 2y = 5.
Step-by-step explanation:
First consider the given line 8x = 2y - 5. This can be rewritten as
2y = 8x + 5
y = (8x + 5)/2 = 4x + 2.5
The line is y = 4x + 2.5. This is of the form y = mx + b.
On comparing, we see that the slope of the given line is m = 4
Now, we require to find the slope of a line perpendicular to this. Let its slope be m'.
We know that for two lines to be perpendicular, the product of the slopes = -1
So, m * m' = -1
4 * m' = -1
m' = -1/4
Answer: Slope of the perpendicular line is -1/4.
Bob needs 496 inches of border to put around his kitchen walls. if each roll contains 10 ft of border, how many rolls will Bob need?
In one jar, I have two balls labelled 1 and 2 respectively. In a second jar, I have three balls labelled 0, 1 and 2 respectively. I draw one ball from each jar, multiply the numbers on the two balls together, and then calculate three to the power of that product, e.g. if I draw 1 and 2, I calculate 3^2=9. Let’s call this number X. What is the probability that the number 1,024 is an exact multiple of X?
Step-by-step explanation:
this is a kind of trick question, actually.
with whatever we draw, we produce X values as power of 3.
to be precise, we can have only
3⁰ = 1
3¹ = 3
3² = 9
3⁴ = 81
due to the possible combinations of drawn numbers (e.g. 3 cannot be created by a multiplication of 0s, 1s and 2s).
so, mostly, these results cannot be exact factors of 1024.
1024 cannot be divided by 3, nor by 9 nor by 81.
but 1024 is a multiple of 1 (as is every number).
so, we are looking at the probability to get 0 as multiplication result of the numbers on the 2 drawn balls.
the only possibilities are
1 and 0
2 and 0
out of in total 6 (2×3) different outcomes
1 and 0
1 and 1
1 and 2
2 and 0
2 and 1
2 and 2
the probability of this "0" event is again
number of desired outcomes / number of possible outcomes = 2/6 = 1/3
y<_ - 1/2 + 4
y> - x
Answer:
1.4.5
2.idont know the answer for that question because I am grade 6