Answers
The exact value for the equation is true but I don't really think that's the question so anyways...
- 15.) The exact form for this equation is -13pi/3 and the decimal form -13.613...
- 16.) The exact form for this equation is 23pi/4 and the decimal form 18/064...
- 17.) The exact form is -7pi/2 as the decimal is -10.995...
- 18.) The exact is -29pi/6 and the decimal is -15.184...
We know any trig problem that asks for exact values probably has something to do with 30° or 45° and their multiples. That's [tex]\pi/6[/tex] and [tex]\pi/4[/tex]; we're apparently doing radians in this one.
General rules off the top of my head: Coterminal angles (gotten by adding or subtracting multiples of 2π) have the same values for their trig functions , cosine is even, sine is odd, cosine negate supplementary angles, sine of supplementary angles is unchanged, and the cosine of an angle is the sine of the complementary angle.
15
[tex]\cos (- \frac{13\pi}{3}) = \cos( 13\pi/3-6(2\pi)) =\cos(\pi/3) = \frac 1 2[/tex]
16
[tex] \csc(\frac{23 \pi}{4}) = \dfrac{1}{\sin (23\pi/4 - 3(8\pi/4))} = \dfrac{1}{\sin(-\pi/4)}= \dfrac{1}{- 1 /\sqrt{2}} = - \sqrt{2}[/tex]
17
[tex]\sec(-\frac {7 \pi}{2}) = \dfrac{1}{\cos(-7\pi/2+ (4/2)(2\pi) )}= \dfrac{1}{\cos(\pi/2)} = \dfrac 1 0[/tex]
That one is undefined
18
[tex]\cot(-\frac{29\pi}{6}) = \cot(-29\pi/6 + (18/6) (2 \pi)) = \cot(7\pi/6) \\= \tan(\pi/2 - 7\pi/6) = \tan(-4\pi/6)= \tan(-2\pi/3 + \pi) = \tan(\pi/3)= \sqrt{3}[/tex]
Whoever created this math homework problem needs a lesson in writing and typesetting math. Let's list the errors:
Exact -- capitalized
each equation -- there are no equations
0 to 2 pi for theta -- do they want us to find the values or find the thetas but not evaluate the trig function?
theta is spelled out, not typeset
trig functions shouldn't be typeset in italics
sec -(7 pi/2) is a typo
Sometimes there's a space after the problem number sometimes there isn't
This is awful. Demand more of your teachers and online exercises!
Related Questions
An artist is creating a large butterfly sculpture outside a museum. There is a circular dot on each wing made out of a metal ring. The distance around each dot is 24π inches . The artist plans to fill the inside of each dot with blue colored glass. What is the area of the blue glass will be needed to fill each butterfly dot?
Answers
Answer:
144 π or 452.4 sq inches, for each dot
Step-by-step explanation:
We are given the perimeter of the circle (24π), and we are asked to find the area of the circle basically.
The Circumference of a circle is given by C = 2 * π * r
while its area is given by A = π r²
So, having the circumference, we can isolate r to use it in the area calculation.
C = 2 * π * r
24π = 2 * π * r (now dividing both sides by 2π)
12 = r
The radius is 12 inches.
That means the area of one dot is:
A = π r² = π 12² = 144 π sq inches
The amount of blue glass needed for each dot is 144 π or 452.4 sq inches
Answer: 144
Step-by-step explanation:
Is the given sequence arithmetic? If so, identify the common difference. −34, −28, −22, −16, . . .
yes, −6
yes, 6
yes, −4
no
Answers
Answer:
yes, 6
Step-by-step explanation:
The given sequence is −34, −28, −22, −16, . . .
We check to see if there is a constant difference among the terms.
[tex]d=-28--34=-22--28=-16--22=6[/tex]
Since there is a constant difference of 6 among the consecutive terms, the sequence is arithmetic.
The correct choice is yes, 6
Anne has saved 9 dollarsfor a new coat.Tgat is 1/6 as much money as she needs.How much does the coast cost?
Answers
The coat will cost $54
select the angle that correctly completes the law of cosines for this triangle
Answers
Answer:
Option 'B'
Step-by-step explanation:
The law of cosines states that given a triangle with sides a, b, c, then:
[tex]c^{2} =a^{2}+b^{2} -2abcos(y)[/tex] where 'y' is the opposite angle to the side 'c'.
In this case, given that the equation is: [tex]15^{2} =8^{2} + 17^{2} -2(8)(17)cos(y)[/tex] we can clearly see that c=15, and the opposite angle to 'c' is 62 degrees.
The correct option is Option 'B'
ANSWER
B. 62°
EXPLANATION
The cosine rule is given by:
[tex] {b}^{2} + {c}^{2} - 2(bc) \cos(A) = {a}^{2} [/tex]
where A is the angle that is direct opposite to the side length which is 'a' units.
The given relation is:
[tex]8^{2} + {17}^{2} - 2(8)(17) \cos( - ) = {15}^{2}[/tex]
The missing angle should be the angle directly opposite to the side length measuring 15 units.
From the diagram the missing angle is 62°
question 66
true or false
Answers
Answer:
True
Step-by-step explanation:
we know that
sin(-360°)=sin(360°)=0
therefore
y=sin(-360°)=0
If a circle with a diameter of 20 m is inscribed in a square, what is the probability that a point picked at random in the square is in the shaded region?
A. 1/5
B. 43/200
C. 86/314
D. 314/400
Answers
I used 3,14 for pi since it was only way it made sense based on the answers.
The question probably provided you with this.
If you have any more questions do not hesitate :)
The probability that a point picked at random in the square is in the shaded region will be 86/314. Thus option C is correct.
What is the probability?Probability refers to a possibility that deals with the occurrence of random events.
The probability of all the events occurring need to be 1.
Given:
A circle with a diameter of 20 m is inscribed in a square .
Thus side of square = 20 m
Now, area of square = 20 x 20
= 400 sq m
The radius of circle = 10 m
Area of circle
[tex]A = \pi r^2\\\\A = 3.14 \times 10^2\\\\A = 314 m^2[/tex]
Now, Area of shaded region = Area of the square - an area of circle
Area of shaded region = 400 - 314
= 86
The probability that a point picked at random in the square is in the shaded region will be 86/314. Thus option C is correct.
Learn more about probability here;
https://brainly.com/question/11234923
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In a contest, players have to pick marbles from a bag. The bag contains 30 blue marbles, 20 yellow marbles, 10 red marbles, and 40 green marbles. A player wins $7 on picking a green marble, loses $5 on picking a blue marble, loses $3 on picking a yellow marble, and wins $2 on picking a red marble.
How will you simulate this game without actually having 100 marbles in a bag?
A.
Use the numbers 1–10 to represent different marbles based on their probabilities.
B.
Use the numbers 1–25 to represent different marbles based on their probabilities.
C.
Use the numbers 1–17 to represent different marbles based on their probabilities.
D.
Use the numbers 1–4 to represent different marbles based on their probabilities.
Answers
Answer:
D
Step-by-step explanation:
There are 4 colors to choose from, so use numbers 1-4 to represent each color.
Find the greatest common factor of 8m 3 and 6m 4
Answers
The greatest common factor of 8m^3 and 6m^4 is 2m^3. This is found by determining the highest number or term that can divide both terms exactly, considering both the coefficients and the power of the variable.
Explanation:The question asks for the greatest common factor of the terms 8m3 and 6m4. The greatest common factor (GCF) is the highest number or term that divides both numbers exactly. Ignoring the coefficients (8 and 6), we can easily see that these terms both contain the variable 'm', raised to the powers 3 and 4, respectively.
The rule for dealing with variables when finding the GCF is to take the variable to the power which is the lesser of the two. In this case, that would be m3. Now, looking at the coefficients (8 and 6), the highest number that can divide them both exactly is 2. Therefore, the greatest common factor of 8m3 and 6m4 is 2m3.
Learn more about Greatest Common Factor here:https://brainly.com/question/29584814
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The greatest common factor of 8m³ and 6m⁴ is 2m³, which is found by identifying the shared prime factors and the lowest power of 'm' present in both terms.
To find the greatest common factor (GCF) of 8m³ and 6m³, we need to find the highest power of each prime number and the variable that is contained in both terms. The prime factorization of 8 is 23, and for 6, it is 2 × 3. Since both have at least one factor of 2, we'll use that in our GCF. Additionally, since the lowest power of 'm' that appears in both terms is m3, we will also use that.
The GCF is the product of these shared factors. So, we have:
2 (the common prime factor)
m3 (the lowest power of 'm' in both terms)
Therefore, the GCF of 8m³ and 6m⁴ is 2m³.
PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!
The graph of a polynomial function of degree 5 has three x-intercepts, all with multiplicity 1. Describe the nature and number of all its zeros.
Answers
The answer is C: Three real zeros and 2 imaginary zeros
Answer: C) 3 real zeros & 2 imaginary zeros
Step-by-step explanation:
Since the function has a degree of 5, then there must be 5 zeros.
If each of the 3 given zeros crosses the x- axis (which is what happens when it has an odd-numbered multiplicity), then there are 2 zeros missing.
The missing zeros are imaginary.
(3 zeroes × multiplicity of 1) + (2 imaginary)
3 + 2 = 5 [tex]\large\checkmark[/tex]
A roller coaster starts from a deck at an elevation of 20 feet above the ground. On the first hill it climbs 78 feet and then drops 85 feet. On the second hill the coaster climbs 103 feet and then drops 110 feet. How far below or above the deck is the coaster after the completion of the two hills?
Answers
Answer:
14 feet below. the deck.
Step-by-step explanation:
That would be (20 + 78 - 85 +103 - 110 ) feet above the ground
= 6 feet above the ground.
That is 20 - 6 = 14 feet below the deck.
PLEASE HELP ME!!!!!!!!!!!!!!!!!!
Answers
Answer:
a) 4 - [tex]vt - d = \frac{1}{2} at^{2}[/tex]
b) 1 - [tex]2(vt - d) = at^{2}[/tex]
c) 6 - [tex]\frac{2(vt - d)}{t^{2}} = a[/tex]
Step-by-step explanation:
It simply asks the steps to go from the original displacement formula to isolate a (the acceleration). It's just a matter of moving items around.
We start with:
[tex]d = vt - \frac{1}{2} at^{2}[/tex]
We then move the vt part on the left side, then multiply each side by -1 (to get rid of the negative on the at side and to match answer choice #4):
[tex]vt - d = \frac{1}{2} at^{2}[/tex]
Then we multiply each side by 2 to get rid of the 1/2, answer #1:
[tex]2(vt - d) = at^{2}[/tex]
Finally, we divide each side by t^2 to isolate a (answer #6):
[tex]\frac{2(vt - d)}{t^{2}} = a[/tex]
A rectangle prism has a length of 1 1/4 cm a width of 4 cm and a height of 3 1/4 cm what is the volume of this prism
Answers
Answer:
65/4 cm³, or 16.25 cm³
Step-by-step explanation:
Here, Volume V = (length)(width)(height). Those measurements are included here:
V = (1 1/4 cm)(4 cm)(3 1/4 cm), or
V = (5/4 cm)(4 cm)(13/4 cm)
V = (5 cm²(13/4 cm) = 65/4 cm³, or 16.25 cm³
The table show whether a bus pass is a child’s or adult’s pass and whether it is a daily or monthly pass
(it’s a lot of different answers, like 50.8% or 60% or 60.8%)
do anybody have a for sure answer?
Answers
Answer:
50.8%
Step-by-step explanation:
That is the one my friend and I chose. It is 31/61 when all the stuff is added together and that is put to 50.8 as a percentage..
Drag each statement to show whether it is true, based on the graph.
Boxes are
True, Not True, Cannot Be Determined
- There is suppose to be 5 answers there is only 4 to go in each box...
the 5th answer box is - Almonds cost $0.65 per one pound
Answers
Answer:
Step-by-step explanation:
The first and fourth answer choices are the correct one: $2.20/0.65 lb, $2.20 for 0.65 lb of almonds.
Answer:
i) True
ii) Not True
iii) Cannot be Determined
iv) True
Step-by-step explanation:
From the given graph, we infer the following information.
Cost of 0.65 Almonds is $2.2
Therefore,
i) The price per one pound of almonds equals [tex]\frac{2.20}{0.65lb}[/tex]---TRUE
ii) 2.2 pounds of almonds cost $0.65 ---------> Not True.
iii) Each bag of almonds weighs 2.2 pounds -----> Cannot be Determined (Because we don't have any information about bag)
iv) 0.65 pound of almonds costs $2.20 -----------> True
Please help asap!!!!
Answers
Answer:
11
Step-by-step explanation:
There is a rather simple method to this.
The factor given is ( x - 2 ) and the dividend is ( 2x⁵ - 7x³ - x² + 4x - 1)
To find the remainder, we will take it as x - 2 = 0
We will get x as 2
Now, substitute the value.
2 ( 2 )⁵ - 7 ( 2 )³ - ( x )² + 4 ( 2 ) - 1
2 ( 32 ) - 7 ( 8 ) - ( 4 ) + 8 - 1
64 - 56 - 4 + 8 - 1
8 - 4 + 8 - 1
16 - 4 - 1
16 - 5
11
Hence, the remainder is 11.
please help thank you.
first answer choices: 18 20 37 48
second answer choices: 38 38.5 42 72
third answer choices: 26 and 32, 28 and 42.5, 29 and 42.5, 38.5 and 43
fourth answer choices: 9 13.5 26 38
fifth answer choices: interquartile range, median, lower and upper quartiles, range
Answers
Answer:
range= 20 median= 38 lower quartile and upper quartile= 29 and 42.5
interquartile range= 13.5
Step-by-step explanation:
range= you take the biggest number and subract it from the smallest number.
median= you set the numbers to smallest to biggest then go in from the left and right moving both fingures at once till you get to the middle.
Lower quartile= exclude the medain and average the 4 numbers
Upper quartile= exclude the medain and average the 4 numbers
interquartile range= subract 29 from 42.5
range (i think)
Pls help me...........
Answers
Answer:
[tex]\frac{4}{5}[/tex]
Step-by-step explanation:
Using the Pythagorean identity
sin²x + cos²x = 1, then
sin²x = 1 - cos²x
sinx = [tex]\sqrt{1-cos^2x}[/tex]
note that cosΘ = [tex]\frac{6}{10}[/tex] = [tex]\frac{3}{5}[/tex]
sinΘ = [tex]\sqrt{1-(3/5)^2}[/tex]
= [tex]\sqrt{1-\frac{9}{25} }[/tex]
= [tex]\sqrt{\frac{16}{25} }[/tex] = [tex]\frac{4}{5}[/tex]
Diego's family car holds 14 gallons of fuel. Each day the car uses 0.6 gallons of fuel. A warning light comes on when the remaining fuel is 1.5 gallons or less. Write an inequality that represents the number of days Diego's father can drive the car without the warning light coming on. Explain each part of your inequality
Answers
Answer:
The inequality is [tex]0.6x < 12.5[/tex]
The maximum number of days that Diego's father can drive the car without the warning light coming on is 20 days
Step-by-step explanation:
14 gallons-1.5 gallons=12.5 gallons
we know that
If the remaining fuel is greater than 1.5 gallons Diego's father can drive the car without the warning light coming on
so
Let
x ----> the number of days
[tex]0.6x < 12.5[/tex] ----> inequality that represent the situation
Solve for x
[tex]x < 12.5/0.6[/tex]
[tex]x < 20.8\ days[/tex]
The maximum number of days that Diego's father can drive the car without the warning light coming on is 20 days
An inequality is similar to an equation in that they both describe the relationship between two expressions.
The inequality represents the number of days Diego's father can drive the car without the warning light coming on is [tex]\rm x<20.8[/tex].
GivenDiego's family car holds 14 gallons of fuel.
Each day the car uses 0.6 gallons of fuel.
A warning light comes on when the remaining fuel is 1.5 gallons or less.
What is inequality?An inequality is similar to an equation in that they both describe the relationship between two expressions.
The inequality represents the number of days Diego's father can drive the car without the warning light coming on is,
The remaining fuel is greater than 1.5 gallons Diego's father can drive the car without the warning light coming on.
Here, x represents the number of days.
Therefore,
The inequality represents the number of days Diego's father can drive the car without the warning light coming on is,
[tex]\rm 0.6x<12.5\\\\x < \dfrac{12.5}{0.6}\\\\x<20.8[/tex]
Hence, The inequality represents the number of days Diego's father can drive the car without the warning light coming on is [tex]\rm x<20.8[/tex].
To know more about Inequality click the link given below.
https://brainly.com/question/18866773
Please please help me
Answers
Answer:
(x - 5)² + (y + 3)² = 16
Step-by-step explanation:
The equation of a circle in standard form is
(x - h)² + (y - k)² = r²
where (h, k) are the coordinates of the centre and r is the radius
here (h, k) = (5, - 3) and r = 4, thus
(x - 5)² + (y - (- 3))² = 4², that is
(x - 5)² + (y + 3)² = 16 ← equation of circle
At Wonderful Water park, the water trough ride cost $2.75 per ride. If you have $15. then how many times could you ride?
Answers
Answer:
The maximum number of rides is 5
Step-by-step explanation:
Let
x----> the number of rides
we know that
The inequality that represent this situation is
[tex]2.75x\leq 15[/tex]
Solve for x
Divide by 2.75 both sides
[tex]x\leq 15/2.75[/tex]
[tex]x\leq 5.45[/tex]
Round down
The maximum number of rides is 5
Answer:
The maximum number of rides is 5
answer is 5 i took the test
Which choice is equivalent to the expression below when x is greater than or equal to 0?
Answers
Answer:
Choice A is the correct answer
Step-by-step explanation:
[tex]2x\sqrt{2x}[/tex]
Find the attachment below for the explanation
For this case we must indicate an expression equivalent to:
[tex]\sqrt {18x ^ 3} - \sqrt {9x ^ 3} +3 \sqrt {x ^ 3} - \sqrt {2x ^ 3}[/tex]
So, rewriting the terms within the roots we have:
[tex]18x ^ 3 = (3x) ^ 2 * (2x)\\9x ^ 3 = (3x) ^ 2 * (x)\\x ^ 3 = x ^ 2 * x\\2x ^ 3 = (2x) * x ^ 2[/tex]
So:
[tex]\sqrt {(3x) ^ 2 * (2x)} - \sqrt {(3x) ^ 2 * (x)} + 3 \sqrt {x ^ 2 * x} - \sqrt {(2x) * x ^ 2} =[/tex]
Removing the terms of the radical:
[tex]3x \sqrt {2x} -3x \sqrt {x} + 3x \sqrt {x} -x \sqrt {2x} =[/tex]
We simplify adding terms:
[tex]3x \sqrt {2x} -x \sqrt {2x} -3x \sqrt {x} + 3x \sqrt {x} =\\2x \sqrt {2x} + 0 =\\2x \sqrt {2x}[/tex]
Answer:
Option A
Scores on a standardized test are normally distributed with a mean of 228 and a standard deviation of 18. Students who score at least 2.3 standard deviations above the mean receive a certificate.
What is the minimum score required to receive the certificate?
Answers
Answer:
270
Step-by-step explanation:
The mean is 228 and the standard deviation is 18.
2.3 standard deviations above the mean is:
228 + 2.3×18
228 + 41.4
269.4
Since scores are usually integers, we round up to 270.
A vendor sells three types of watches. Of the watches in stock 20% are mens watches, 40% are ladies watches and the rest are childrens watches. There are 250 all together how many childrens watches are there math
Answers
Answer:
100.
Step-by-step explanation:
The percentage of children's watches = 100 - 20 - 40 = 100-60
= 40%.
40% = 0.40 as a decimal fraction.
So the number of children's watches
= 0.40 * 250
= 100.
Please please help me
Answers
Answer:
151.4496 cm²
Step-by-step explanation:
The area of a trapezoid is found using the formula ...
A = (1/2)(b1 +b2)h
where b1 and b2 are the lengths of the parallel bases and h is the distance between them. Fill in the numbers and do the arithmetic.
A = (1/2)(22.2 cm + 8.52 cm)(9.86 cm) = 151.4496 cm²
Consider a triangle with side lengths of 10 ft, 17.32 ft, and 20 ft. By examining the side lengths, what can you conclude about the measurement of the angles? Explain your reasoning. A) The angles are 30-60-90. The longest leg (hypotenuse) of the triangle is twice the shortest leg. The middle leg is the shortest leg times the square root of 3 . B) The angles are 60-60-60. The longest leg (hypotenuse) of the triangle is twice the shortest leg. The middle leg is the shortest leg times the square root of 3. C) The angles are 45-45-90. The longest leg (hypotenuse) of the triangle is twice the shortest leg. The middle leg is the shortest leg times the square root of 3. D) The angles are 30-60-90. The longest leg (hypotenuse) of the triangle is twice the shortest leg. The middle leg is the shortest leg times the square root of 2.
Answers
Answer:
A) The angles are 30-60-90. The longest leg (hypotenuse) of the triangle is twice the shortest leg. The middle leg is the shortest leg times the square root of 3.
Step-by-step explanation:
The answer choice speaks for itself.
The legs of a 45-45-90 triangle have the ratios 1 : 1 : √2.
The legs of a 30-60-90 triangle have the ratios 1 : √3 : 2.
Clearly, the given leg lengths match the second set of ratios more closely:
10 : 17.32 : 20 ≈ 1 : √3 : 2.
A bag of marbles has 12 red, 7 yellow, 5 blue and 1 white. Find the probability of selecting 4 marbles from the bag where all 4 are red.
Answers
There are 25 marbles: (12 red, 7 yellow, 5 blue, 1 white)
The probability of the first marble being red is 12/25 because there are 12 red marbles still available and no marbles are missing
The probability of the second marble being red is 11/24 because only 11 red marbles are available and 1 marble has already been selected from the pile
The probability of the third marble being red is 10/23 because only 10 red marbles are available and 2 marbles have already been selected from the pile
The probability of the fourth marble being red is 9/22 because only 9 red marbles are available and 3 marbles have already been selected from the pile
Since we are interested in all of these events occurring simultaneously, we must multiply the probability of all 4 events, like so:
[tex] \frac{12}{25} \times \frac{11}{24} \times \frac{10}{23} \times \frac{9}{22} [/tex]
Solving for this we are left with:
[tex] \frac{9}{230} \: \: or \: \: 0.0391[/tex]
Chase plays the piano and the cello. For every 2 hours he practices the piano, he practices the cello for 3 hours. If he practiced the piano for 5 hours last week, how many hours did he spend practicing the cello?
Answers
He would have played the cello for 7 hours and 30 minutes because 4 hours would be 6 hours of the cello and then he only did one more hour so you split 3 in half and that makes it an hour and a half. So the answer is 7 hours 30 minutes
Given that the ratio of piano practice to cello practice for Chase is 2:3, if he practiced the piano for 5 hours, he would have practiced the cello for 7.5 hours.
Explanation:To find out how many hours Chase spent practicing the cello, we first need to assess the ratio of piano to cello practice. The problem tells us that for every 2 hours practicing the piano, Chase spends 3 hours practicing the cello. So, the ratio of piano to cello practice is 2:3.
If he practiced the piano for 5 hours, the equivalent time spent practicing the cello can be found by setting up a proportion like: (2 hours piano / 3 hours cello) = (5 hours piano / x hours cello), where x is the number of cello practicing hours. Solving this proportion for x gives us x = (5 * 3) / 2 = 7.5 hours.
An interpretation of this result is that for every hour Chase spends practicing the piano, he spends 1.5 hours practicing the cello. Therefore, Chase spent 7.5 hours practicing the cello last week, given that he practiced the piano for 5 hours.
Learn more about Ratio and Proportion here:https://brainly.com/question/26974513
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Please please help me
Answers
Answer:
169 : 289
Step-by-step explanation:
Since the figures are similar then
linear ratio of sides = a : b, then
ratio of areas = a² : b²
ratio of sides = 52 : 68 = 13 : 17
ratio of areas = 13² : 17² = 169 : 289
What is the value of x if 2 + 4x = 10?
Answers
Answer:
x = 2
Step-by-step explanation:
2 + 4x = 10
4x = 10 - 2
x = 8
x = 8 ÷ 4
x = 2
The height of a rocket launched upward from a 160 foot cliff is modeled by the function h(t)= -16t^2+48t+160, where h is height in feet and t is time in seconds. Find the time it takes the rocket to reach the ground at the bottom of the cliff.
Answers
Answer:
5 seconds
Step-by-step explanation:
In order to find the time when it landed, we will have to find the x-intercepts.
Equation given to us : -16t² + 48t + 160
Let's take the GCD, which is -16.
-16( t² - 3t - 10 )
Factoring what's inside the brackets, we get the x-intercepts.
What multiples to -10 but adds up to -3? The numbers are -5 and 2
-16 ( t - 5 ) ( t - 2 )
X-intercepts are t - 5 and t - 2
Which is 5 and 2 seconds. But one of this is an extraneous solution and that is 2.
If we substitute the value of 2 in the equation, we will not get 0.
During the x-intercept, the x has a value and y is 0. If we substitute 5 ans x. we will get y as 0.
Hence, the answer is 5 seconds.