Answer:
x⁴-2x³+2x²-3x+6 to (x-1) is
(x^3-x^2+x-2)*(x-1)+4
Justin’s doctor said that the expression StartFraction x + y + 5 over 2 EndFraction, where x and y are his parents’ current heights in inches, gives an estimate of how tall Justin will be as an adult. Justin’s work evaluating the formula is shown below.
Mom’s height = 54 inches
Dad’s height = 71 inches
StartFraction 71 + 54 + 5 over 2 EndFraction = 71 + 27 + 5 = 103 inches
What error did Justin make?
He should have made x equal 54 and y equal 71.
He should have added the values in the numerator before dividing by 2.
He should have divided the 71 by 2 instead of the 27.
He should have made the numerator 76 + 59.
Mark this and return
The error Justin made in his calculation is "He should have added the values in the numerator before dividing by 2".
The correct answer choice is option B
What error did Justin make?(x + y + 5) / 2
Where,
x and y are his parents’ current heights in inches,
Mom’s height = 54 inches
Dad’s height = 71 inches
Substitute into the expression
(71 + 54 + 5) / 2
= 130/2
= 65 inches
Justin's work:
( 71 + 54 + 5 ) / 2
= 71 + 27 + 5
= 103 inches
Therefore, Justin should have added the numerators before dividing by 2.
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Which number line shows the solution of –5x + 10 > –15?
Answer:
b
Step-by-step explanation:
Answer:
Where is the number line?? ;-;
Step-by-step explanation:
Dude I cant answer if you dont show me the number lines
Help :'( I really need this done 100 points if u do it pls pls help image below pls help :'(
→ the lenght = 13 square units
→ the width = 2 square units
→ the area of the rectangle = 13×2 = 26 square units
→ the area of the triangle = 26 : 2 = 13 square units
Answer:
Step-by-step explanation:
you would copy and paste another triangle on top to form a rectangle. That would make the rectangle's length 13 units and its width 2 units. the area of a rectangle is found by A=length x width which in this case is 26 units^2. A single triangle's area is 1/2 the area of the rectangle making it 26/2 which is 13.
So the area of the triangle is 13 units^2.
So far, you proved that one pair of parallel sides in a parallelogram
must be congruent. Add to your proof to prove that both pairs of
parallel sides in a parallelogram must be congruent.
Geometry
Both the pairs of opposite sides in a parallelogram are parallel and congruent.
According to the question,
We've proved that one pair of sides in parallelogram must be congruent
Let ABCD is a parallelogram ,
We know that AB // CD
Here, AC is transversal for the parallel lines AB and CD
So, ∠BAC = ∠DCA (Using interior angle property) --------(1)
Similarly , We also know that BC // AD
=> ∠BCA = ∠DAC -----------(2)
Now , In ΔABC and ΔADC,
∠BAC = ∠DCA from (1) AC is common side∠BCA = ∠DAC from (2)Therefore , ΔABC ≅ ΔADC (as per ASA congruence rule)
Therefore , AB = CD and BC=AD (Corresponding sides of congruent triangles are equal)
Hence , Both the pairs of opposite sides in a parallelogram are parallel and congruent.
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is it accurate to say that Jayla biked the same speed but in the opposite direction as Sarah and Justin?
It is accurate to say that Jayla biked the same speed but in the opposite direction as Sarah and Justin if they all cover the same distance at a given time.
What is speed?Speed is used to measure the rate at which an object moves. The speed is based in the distance covered and the time used.
An individual may bike the same speed but in different direction if the time and distance covered is the same. But when there is a disparity, it not safe to say they run or bike the same speed.
To know if the bike the same speed, both Jayla, Sarah and Justin speed should be computed.
Therefore, It is accurate to say that Jayla biked the same speed but in the opposite direction as Sarah and Justin if they all cover the same distance at a given time.
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A jar of marbles contains 5 pink, 9 green, 13 blue, and 3 orange marbles. If a marble is randomly chosen from the jar, what is the probability that it will not be orange?
The probability that it will not be orange is 0.9
What is probability?
Probability is the branch of mathematics concerning numerical descriptions of how probably an event is to do, or how likely it's that a proposition is true.
given:
There are:
5 pink marbles
9 green marbles,
13 blue marbles, and
3 orange marbles.
There is a total of 30 marbles in the jar.
Step 1. Take 1 marble from the jar.
Step 2. Probability that it is orange, = P(orange) = ( 3/30 ) = ( 1/10 ) = 0.10 = 10%
Step 3. Probability that the chosen marble is not orange, = ( 1 - Probability that the chosen marble IS orange) = ( 1 - 0.1 ) = 0.9 = 90%.
hence , the probability that it will not be orange is 0.9
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Consider the following function f(x)=x4+3, x>=0.Find an explicit formula for f^-1
The explicit formula for f^-1 is (x-3)^(1/4) and this is obtained by switching the roles of x and y and solving for y in terms of x.
To find the inverse function of f(x)=x^4+3, we need to switch the roles of x and y, and solve for y.
Let y = x^4+3
Subtract 3 from both sides to get:
y - 3 = x^4
Take the fourth root of both sides to isolate x:
(x^4)^(1/4) = (y-3)^(1/4)
Simplify:
x = (y-3)^(1/4)
So the inverse function of f(x) is:
f^-1 (x) = (x-3)^(1/4)
This is the explicit formula for the inverse function of f(x).
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Find the derivative of the function f(x), below. It may be to your advantage to simplify before differentiating. f(x)=ln(14-e^-2x). f'(x)
The derivative of the function f(x) = ln(14 - e^(-2x)) is f'(x) = [4xe^(-2x)] / [e^(2x) - 14].
The derivative of the function f(x) = ln(14 - e^(-2x)) is given by:
f'(x) = [1/(14 - e^(-2x))] * [-2e^(-2x)]
To simplify this expression, we can factor out a -2 from the numerator:
f'(x) = [-2/(14 - e^(-2x))] * [e^(-2x)]
Now, we can use the chain rule to differentiate the second factor:
f'(x) = [-2/(14 - e^(-2x))] * [-2x e^(-2x)]
Simplifying further, we get:
f'(x) = [4xe^(-2x)] / [e^(2x) - 14]
Therefore, the derivative of f(x) is f'(x) = [4xe^(-2x)] / [e^(2x) - 14].
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The intensity of exercise and your heart rate-positive-negative-no correlation
The intensity of excercise increases the heart rate, that is, more intensity the excersice, greater the heart rate.
It means that there is a positive correlation between int
an urn contains 15 red marbles and 12 blue marbles. 12 marbles are chosen at random. what is the probability that 5 red marbles are chosen?
the probability of choosing exactly 5 red marbles when 12 marbles are chosen at random is approximately 0.028.
This is a hypergeometric probability problem .
The total number of ways to choose 12 marbles from 27 is:
${{27}\choose{12}} = \frac{27!}{12!15!} = 10,!626,!766$
The number of ways to choose 5 red marbles and 7 blue marbles is:
$ {{15}\choose{5}}\cdot{{12}\choose{7}} = \frac{15!}{5!10!}\cdot\frac{12!}{7!5!} = 300,!450$
So the probability of choosing exactly 5 red marbles is:
$P(\text{5 red}) = \frac{300,!450}{10,!626,!766} \approx 0.028$
what is probability?
Probability is the measure of the likelihood or chance of an event occurring. It is a quantitative measure that ranges from 0 to 1, where 0 indicates an impossible event and 1 indicates a certain event.
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The area of the surface of the swimming pool is 210 square feet. what is the length of the deep end?
The length of the deep end is 12 feet of the swimming pool.
Given: Area of the swimming pool is 210 square feet
Width of the pool = 10 feet
The length of the shallow end is 9 feet and the length of the deep end is d.
To find the value of d.
Let's solve the problem.
The area of the swimming pool is 210
The width is 10
The deep end length is d
The shallow end length is 9
The total length of the swimming pool = The length of the deep end + The length of the shallow end
=> d + 9
Therefore, the total length of the swimming pool is d + 9
The surface of the swimming pool is rectangular, so
The area of rectangle = width × length
Therefore,
area of swimming pool = width of the pool × length of the swimming pool
=> 210 = 10 × (9 + d)
or 10 × (9 + d) = 210
Dividing both sides by 10:
10 × (9 + d) / 10 = 210 / 10
9 + d = 21
Subtracting 9 on both sides:
9 + d - 9 = 21 - 9
d = 12
Therefore the length of the deep end is 12 feet
Hence the length of the deep end is 12 feet of the swimming pool.
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The length of the deep end of the swimming pool is 12 feet.
We are given that:
The Area of the swimming pool = 210 square feet
width of the swimming pool = 10 feet
Length of shallow end = 9 feet
Let the length of the deep end be d.
Total length of the swimming pool = length of deep end + length of shallow end = d + 9
Area of swimming pool = width × length
Substituting the values, we get that:
210 = 10 × (9 + d)
9 + d = 21
d = 12
Therefore the length of the deep end of the swimming pool is 12 feet.
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A ticket to see your favorite baseball team costs $. 45.04That price decreases by $0.24for every game lost during the regular season. What equation could you use to find the cost C of a ticket after L losses? Represent the total change in the cost of a ticket after the team loses 41 games. What is the price of a ticket after the team loses 41 games?
What number is furthest from 0 on a number line? 16 or 18?
PLEASE HELP ME!!! I'M ALMOST OUT OF TIME!!
Answer:
I am confused what the question is asking
Step-by-step explanation:
Could you please comment down below and restate the question?
Answer: ok so.. exponential function's is kinda the same process as slopes and linear equations and functions ok so........
For slopes its rise over run but for this question its...... TO BE CONTINUED LOL (go to the explanation)
Step-by-step explanation:
So for the run on the x axis its 7 you can see it goes upward a little bit on the 7 but the 7 still counts :D
ok so we got 7 and as the line rises 9go to the picture added for more understanding) So as the line rises we can see from were i marked it in the picture that it touches the 2. So we got 2 as the rise and 7 as the run but remember this is not slopes lol so its kinda different.
THE ANSWER IS A
1. When oil was spilled out in the middle of a lake, it spread out on the surface of the water in a circular pattern. The radius of the circular pattern increased at a rate of 4 feet per minute. ((() = 4tft/min)
A. [3 pts) How fast was the area of the circular pattern increasing per minute? Construct the composite function to show how the area was increasing each minute. ( A() = ft/min).
The rate of change of the area as a function of time is:
A'(t) = 6.28*(R₀ + 4ft/min*t)*(4ft/min)
How to get the rate at which the area increases?
Remember that for a circle of radius R, the area is:
A = 3.14*R^2
Now, if the radius increases at a rate of 4 ft/min, then we can rewrite R as:
R(t) = R₀ + 4ft/min*t
Where t is the time in minutes, and R₀ is the initial radius.
So the area function is:
A(t) = 3.14*(R₀ + 4ft/min*t)^2
The rate of change is given by the differentiation with respect to t, it is:
A'(t) = 2*3.14*(R₀ + 4ft/min*t)*(4ft/min)
A'(t) = 6.28*(R₀ + 4ft/min*t)*(4ft/min)
The rate at which the area increases, as a function of time, is given by:
A'(t) = 6.28*(R₀ + 4ft/min*t)*(4ft/min)
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4. From the top of a tower 14m high, the angle of depression of a student is 32° Make a scale drawing and find the distance of the student from the foot of the tower to the nearest 1/2
The distance of the student from the foot of the tower is 25.63m the nearest 1/2 is 25.5m.
Given that From the top of a tower 14m high
The angle of depression of a student is 32°
we can use trigonometry to find the distance from the foot of the tower to the student:
tan(32°) = opposite/adjacent = 14/distance
Rearranging this equation gives:
distance = 14/tan(32°)
= 25.63m
Therefore, the distance of the student from the foot of the tower is approximately 25.63m nearest 1/2, this is 25.5m.
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Which of the following correctly describes the domain of the function shown below?
Except than x = 1, all real numbers fall within the function's domain.
Why can't a domain consist entirely of real numbers?Since there are no limitations on what we can substitute for x, the domain of a function, f(x), is all real numbers because any real numbers would make f(x) a defined function. As a result, when this is not the case, the domain of a function, f(x), is not all real numbers.
The rational function r(x) = 2x/(x-1) is defined as follows.
So, we set the denominator to zero and solve for x in order to determine the domain of r(x):
x - 1 = 0
x = 1
Hence, x = 1 is the only value of x that causes the denominator to equal 0. R(x) therefore has a domain of all real numbers other than x = 1.
We can express the domain as follows in interval notation:
(-∞, 1) U (1, ∞)
Except than x = 1, all real numbers fall within the function's domain.
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Question:
Which of the following correctly describes the domain of the function shown below?
r(x) = 2x x-1
A. {x:x0}
B. {x: x = 1}
c. x all .real .numbers}
D. xx1}
In October, Diana planted a tulip bulb 6 inches deep in the soil. The next spring, when the tulip bloomed, it reached a height of 13 inches above the surface.
What is the total distance from where the bulb was planted to the top of the tulip?
Answer:
19 inches total
Step-by-step explanation:
What is the measure of an exterior angle of an equilateral triangle?
Answer:
120
Step-by-step explanation:
An equilateral triangle has 3 sides. The exterior angle = 360 / 3 = 120
A square has 4 sides. Each exterior angle = 360 / 4 = 90
A regular n gon has n sides. The exterior angles will be 360/n
if the timer is started on november 17 at 4:00 pm and stopped on november 18 at 6:30 pm, what is the value of minutes at the end of the program?
Answer:
1590 minutes
Step-by-step explanation:
November 17 ends on 12:00, which is 8 hours after 4:00 pm. The time from the beginning of November 18 to noon is 12 hours, and the distance from noon to 6:30 is 6 hours and 30 minutes, so the total time in hours is 8+12+6 +1/2=26 1/2.
Because we know that one hour is 60 minutes, 26 hours is going to be 60*26, which is equal to 60*20+60*6=1560.
1/2 * 60 = 30. 1560+30=1590, so the value of minutes is 1590 minutes.
Let x be an integer. Prove that if x is not divisible by 3, then
(x + 1)(x + 2) is divisible by 3
Answer:
(x + 1)(x + 2) is divisible by 3.
Step-by-step explanation:
Assume that x is not divisible by 3. This means that x can be expressed as x = 3k + r, where k is an integer and r is the remainder when x is divided by 3. Since x is not divisible by 3, the remainder r must be either 1 or 2.
Case 1: r = 1
If r = 1, then x = 3k + 1. Now let's consider (x + 1)(x + 2):
(x + 1)(x + 2) = (3k + 1 + 1)(3k + 1 + 2)
= (3k + 2)(3k + 3)
= 3(3k^2 + 5k + 2)
We can see that (x + 1)(x + 2) is divisible by 3.
Case 2: r = 2
If r = 2, then x = 3k + 2. Now let's consider (x + 1)(x + 2):
(x + 1)(x + 2) = (3k + 2 + 1)(3k + 2 + 2)
= (3k + 3)(3k + 4)
= 3(3k^2 + 7k + 4)
We can see that (x + 1)(x + 2) is divisible by 3.
Hence, the statement is proven.
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(1 point) If \[ g(u)=\sqrt[3]{8 u+2} \] then \[ g^{\prime}(u) \]
The derivative of \(\(g(u) = \sqrt[3]{8u+2}\) is \(g'(u) = \frac{8}{3} \cdot (8u+2)^{-\frac{2}{3}}\).\)
To find the derivative of the function \(g(u) = \sqrt[3]{8u+2}\), we can use the chain rule.
The chain rule states that if we have a composite function \(f(g(u))\), then its derivative is given by \(\((f(g(u)))' = f'(g(u)) \cdot g'(u)\).\)
In this case, let's find the derivative \(\(g'(u)\) of the function \(g(u)\)\).
Given that \(g(u) = \sqrt[3]{8u+2}\), we can rewrite it as \(g(u) = (8u+2)^{\frac{1}{3}}\).
To find \(g'(u)\), we can differentiate the expression \(\((8u+2)^{\frac{1}{3}}\)\) using the power rule for differentiation.
The power rule states that if we have a function \(f(u) = u^n\), then its derivative is given by \(\(f'(u) = n \cdot u^{n-1}\).\)
Applying the power rule to our function \(\(g(u)\)\), we have:
\(\(g'(u) = \frac{1}{3} \cdot (8u+2)^{\frac{1}{3} - 1} \cdot (8)\).\)
Simplifying this expression, we get:
\(\(g'(u) = \frac{8}{3} \cdot (8u+2)^{-\frac{2}{3}}\).\)
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Suppose A Monument in Texas casts a shadow of 285 feet. At the same time, a nearby tourist, who is 5 feet tall casts a 2.5 foot shadow. How tall is the Monument?
The height of the monument is 570 feet. Since the shadow of the monument and the shadow of the tourist are cast at the same time, their angles of elevation are the same.
To solve this problem, we need to use the concept of similar triangles. We can set up a proportion: (height of Monument) / (length of Monument's shadow) = (height of tourist) / (length of tourist's shadow)
Let x be the height of the Monument. Then we have:
x / 285 = 5 / 2.5
Cross-multiplying, we get:
2.5x = 5 * 285
Simplifying, we get:
x = 570
Therefore, the Monument is 570 feet tall.
To find the height of the monument, we can use the concept of similar triangles. Since the shadow of the monument and the shadow of the tourist are cast at the same time, their angles of elevation are the same.
Set up a proportion using the height and shadow length of the tourist and the monument:
(height of monument) / (shadow of monument) = (height of tourist) / (shadow of tourist)
Let x represent the height of the monument. Then:
x / 285 = 5 / 2.5
Now, solve for x:
x = (5 / 2.5) * 285
x = 2 * 285
x = 570 feet
The height of the monument is 570 feet.
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1. The lines y = -x – 3 and y = -x - 5 are parallel. What is the value of a? (2 points) (A) a = -2 (B) 1 a = (C) Q= - (D) a=-9
Given equation of lines :
\(\begin{gathered} y=-\frac{2}{3}x-3 \\ y=\frac{3}{a}x-5 \end{gathered}\)Since the lines are parallel
From the propertoes of parallel lines, the slope of parallel lines are always equal,
where in the general equation of line
\(\begin{gathered} y=m(x-a)+b \\ m\text{ is the slope} \end{gathered}\)On comapring the the first equation of line with general equation of line
we get m=-2/3
so, slope of first line is -2/3
similarly on comparing second equation of line with the general equation of line,
we get m=3/a
so, slope of second line is 3/a
since slope of both the lines are equal because they are paralle,
\(\begin{gathered} \text{slope first line = slope of second line} \\ \frac{-2}{3}=\frac{3}{a} \\ \text{apply cross multiplication and then solve for a,} \\ -2a=3\times3 \\ -2a=9 \\ a=-\frac{9}{2} \end{gathered}\)So, the value of a is -9/2
Answer : C. -9/2
In ΔLMN, the measure of ∠N=90°, ML = 97, NM = 65, and LN = 72. What ratio represents the tangent of ∠L?
Answer:
tan ∠L = 65/72
Step-by-step explanation:
The tangent ratio is:
tan of angle x = opposite/adjacent
Looking from the perspective of angle L, find the opposite side.
This side is MN, measuring 65 units.
opposite = 65
Now let's find the adjacent side.
This side is LN, measuring 72 units.
adjacent = 72
Therefore, the tangent ratio of angle L is 65/72.
Answer:
65/72
Step-by-step explanation:
Given an arithmetic sequence with a thirteenth term, a13 = −111, and a common difference, d = 11, find the 5th term: a5 = ?
Answer:
a5 = -199
Step-by-step explanation:
The formula to find the nth term in an arithmetic sequence is:
\(a_{n}=a_{1}+(n-1)d\), where a1 is the first term, n is the term position (e.g. 5th, 13th), and d is the common difference.
To find a5, we at least need to find a1. We can plug in a13 (-111) for an and 13 for n:
\(-111=a_{1}+(13-1)11\\ -111=a_{1}+12*11\\ -111=a_{1}+132\\ -243=a_{1}\)
Since we now know a1, we can find find a5 (remembering to plug in 5 for n):
\(a_{5}=-243+(5-1)11\\ a_{5}=-243+4*11\\ a_{5}=-243+44\\ a_{5}=-199\)
Is the given statement true or false please explain why
This problem is an example of the use of synthetic division. This can be used to divide polynomials when the divisor has the form (x-a), with a constant.
The steps in this algorithm are:
• 1. write the divisor as ,a,;
In this problem, a = -1.
• 2. write the dividend as the coefficients starting with the leading coefficient, in descending order of the terms' degrees;
In this problem, since the dividend is 3x³-2x²+3x-5, we should write:
3 -2 3 -5
• 3. bring down to the third row the leading coefficient;
In this problem, it's 3. So far, we obtained:
-1 | 3 -2 3 -5
3
• 4. multiply the leading coefficient by a and write the result in the second row;
In this problem, we have 3 * (-1) = -3. Thus, we obtain:
-1 | 3 -2 3 -5
-3
3
• 5. add the numbers on the second row:
-1 | 3 -2 3 -5
-3
3 -5
• 6. repeat steps 4 and 5 for the next coefficients:
-5 * (-1) = 5
3 + 5 = 8
8 * (-1) = -8
-5 - 8 = -13
-1 | 3 -2 3 -5
-3 5 -8
3 -5 8 -13
• 7. the obtained numbers on the third row are the coefficients of the quotient (with one degree less than the dividend), and the last number on the right is the remainder.
In this problem, we have:
\(\frac{3x^{3}-2x^{2}+3x-5}{x+1}=3x^{2}-5x+8-\frac{13}{x+1}\)Therefore, the statement is True.
Please help me!!!!!!
if a data line on a graph slopes down as it goes to the right, it is depicting that group of answer choices the relationship between the variables on
When a data line on a graph slopes down as it goes to the right, it is depicting that the relationship between the variables on the graph is inverse.
An inverse relationship is a kind of correlation between two variables, in which one variable decreases while the other increases, or vice versa. An inverse relationship happens when one variable increases while the other decreases, or when one variable decreases while the other increases.
On a graph, when a data line slopes down as it goes to the right, this is an indication that the relationship between the variables on the graph is inverse. As the values of x increase, the values of y decrease. Therefore, we can conclude that there is an inverse relationship between x and y.
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A rectangle mesures 3 cm by 6 cm Three of these rectangles are put together to make a larger rectangle. Work out the perimeter of this larger rectangle: It mesures three 3 cm tall rectangles that are both 6cm each and another one that is 6 cm tall.
Answer: 45 cm
Step-by-step explanation:
Assuming the rectangles r put together as per the attached picture.
length = 6+3 = 9 cm
Width = 3+3 = 6cm
Perimeter = 2(l+w)
P = 3(9+6)
P = 3 * 15
P = 45 cm