Answer:
Segment JK is congruent to segment to GH ⇒ 2nd answer
Step-by-step explanation:
* Lets revise the meaning of congruent triangles
- When two triangles are congruent then they will have exactly the
same three sides and exactly the same three angles
- Congruent triangles have same areas and same perimeters
- Ex: If Δ ABC ≅ Δ XYZ, then their corresponding sides are congruent
and their corresponding angles are equal
side AB ≅ side XY , side BC ≅ side YZ , side AC ≅ side XZ
angle A ≅ angle X , angle B ≅ angle Y , angle C ≅ angle Z
* Lets solve the problem
∵ Δ FGH ≅ Δ IJK
- The corresponding sides are:
# FG and IJ
# GH and JK
# FH and IK
∵ The corresponding side of GH is JK
∵ The corresponding sides are congruent
∴ GH ≅ JK
∴ Segment JK is congruent to segment to GH
Find the MAD of this set of data.
6, 12, 10, 9, 8, 6, 2, 4, 8, 15
8
9
2.8
3.5
Answer:
2.8
Step-by-step explanation:
The given data set is;
6, 12, 10, 9, 8, 6, 2, 4, 8, 15
The mean of this set is;
[tex]\bar X=\frac{\sum x}{n}[/tex]
[tex]\bar X=\frac{6+12+10+9+8+6+2+4+8+15}{10}[/tex]
[tex]\bar X=\frac{80}{10}=8[/tex]
The mean absolute deviation is given by
[tex]M.A.D=\frac{\sum |x-\bar X|}{n}[/tex]
[tex]M.A.D=\frac{|6-8|+|12-8|+|10-8|+|9-8|+|8-8|+|6-8|+|2-8|+|4-8|+|8-8|+|15-8|}{10}[/tex]
[tex]M.A.D=\frac{2+4+2+1+0+2+6+4+0+7}{10}[/tex]
[tex]M.A.D=\frac{28}{10}[/tex]
[tex]M.A.D=2.8[/tex]
30 points to whoever can answer this please!
Complete the general form of the equation of a sinusoidal function having an amplitude of 6, a period of 2pi/3, and a phase shift to the left 1 unit.
Answer:
y=6sin3(x+1)
Step-by-step explanation:
Identify the area of sector GLM in terms of π and rounded to the nearest hundredth. HELP ASAP!!
Answer:
28.8π ft² ≅ 90.48 ft²
Explanation:
Use the formula area of a sector.
Answer:
≈ 28.8π ft2 ≈ 90.48 ft2
Step-by-step explanation:
1.)Find the volume of a cylinder that has a radius of 1/2 and a height of 1.
2.) What is the volume of a sphere with a diameter of 11ft? Round your answer to the nearest cubic foot.
2786 cubic feet
5572 cubic feet
8359 cubic feet
6193 cubic feet
3.) Find the volume of a cone that has a radius of 1/2 and a height of 1.
answer choices :
1/12pie
3/2pie
3/4pie
1/6pie
Answer:
1) 0.785 cubic units
2) 696.91 cu feet - see explanation.
3) π/12
Step-by-step explanation:
1) Volume of a cylinder with radius 1/2 and height of 1.
A cylinder is a circular prism. For any prism, to calculate its volume, we calculate the area of the shape of the prism, then multiply by its height. We all know how to calculate the area of a circle: A = π r², we have r (1/2). So...
A = π r² = π (1/2)² = π / 4 = 0.785 sq units
Now, we multiply this area by the height of the prism (h = 1):
V = A * h = 0.785 * 1 = 0.785 cubic units
2) Volume of a sphere, diameter of 11 ft
Since the diameter is 11 feet, that means the radius is 5.5 feet.
The sphere volume formula is:
V = (4/3)π r³, now that we have the radius, we can proceed:
V = (4/3)π r³ = V = (4/3)π (5.5)³ = V = (4/3)π * 166.375 = 221.833 π = 696.91 cu ft
However, that doesn't match any of your choices for answer.. so either you made an error in copying the answer choices or there was an error in the question... if we take a radius of 11 (instead of a diameter, we have 5575 cu ft, which is very close to one of your possible answers (5572).
3) Volume of a cone, radius of 1/2 and height of 1
The volume of a cone is found out with the formula:
V = (1/3)π r² h
We have all we need to calculate it:
V = (1/3)π (1/2)² (1) = (1/3) (1/4) π = (1/12) π = π/12
Prisms with a height of one are weird because it's basically like if they're a shape without height.
Answer:
5575.28
Step-by-step explanation:
What is the solution to the system of equations? y = –3x – 2 5x + 2y = 15 (–40, 19) (–19, 55) (19, –40) (55, –19)
Step-by-step Answer:
What is the solution to the system of equations?
y = –3x – 2 ..............(1)
5x + 2y = 15..............(2)
Substitute (1) in (2) to give
5x + 2(-3x-2) = 15
5x-6x-4 = 15
-x-4=15
solve for x:
-4-15 = x
x=-19
Now substitute x=-19 into equation (1)
y = -3x-2 = 57-2 = 55
Therefore the solution is (-19, 55)
The solution of system of equations are (-19, 55)
The given system of equations are,
[tex]y=-3x-2..........(1)\\\\5x+2y=15........(2)[/tex]
Substituting the value of y from equation 1 into equation 2.
[tex]5x+2(-3x-2)=15\\\\5x-6x-4=15\\\\x=-4-15=-19[/tex]
Substituting the value of x in equation 1
[tex]y=-3(-19)-2\\\\y=57-2=55[/tex]
Thus, the solution of system of equations are (-19, 55)
Learn more:
https://brainly.com/question/12526075
PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!
(5 - 3i)(6 + 2i)
Multiply and simplify.
Your answer is D. 36 - 8i
I'm only a few Brainliests away from ranking up, so one would be much appreciated. Thank you, and good luck!
Answer: D) 36 - 8i
Step-by-step explanation:
(5 - 3i)(6 + 2i)
= 5(6 + 2i) -3i(6 + 2i)
= 30 + 10i -18i - 6i²
= 30 - 8i -6(-1) reminder that i² = -1
= 30 - 8i + 6
= 36 - 8i
The price of a computer component is decreasing at a rate of 13% per year. State whether this decrease is linear or exponential. If the component costs $90 today, what will it cost in three year
Answer:
$59.27
Step-by-step explanation:
It is exponential decrease.
After each year goes by its worth 100 - 0.13 = 0.87 of the previous value.
The equation of decrease is V = 90(0.87)^t where t = the number of years.
So after 3 years it is worth 90(0.87)^3
= $59.27.
20 out 50 rolls of a number cube resulted in a 2 being rolled. Based on this information, if the cube was rolled 220 times, how many rolls of a 2 could be expected?
Answer:
88 times
Step-by-step explanation:
The two comes up 20 out of 50 times
We don't know how many times 2 will come up if the die is rolled 220 times. We can, however, set up a proportion
20/50 = x/220 Cross multiply
50x = 20 * 220 Combine the right
50x = 4400 Divide by 50
50x/50 = 4400/50 Do the division
x = 88 times.
Answer:
88
Step-by-step explanation:
Need help ASAP !!! Which of the following equations is of a parabola with a vertex at (0,2)
ANSWER
[tex]y ={x}^{2} + 2[/tex]
EXPLANATION
The equation of a parabola that has vertex at (h,k) is given by:
[tex]y = a {(x - h)}^{2} + k[/tex]
If the given parabola has vertex at (0,2), then h=0 and k=2.
Considering the possible answers, we must have a=1.
We substitute the values in to the formula to get:
[tex]y =1 {(x - 0)}^{2} + 2[/tex]
[tex]y ={x }^{2} + 2[/tex]
The first option is correct.
Look At the figure JKLM find the length of JK. PLEASE HELP!!!!!! PLEASE NEED TO GRADUATE !!!
A. 58
B.48
C.24
D.64
3x-14=58
3x-14+14= 58+14
3x= 72
Divide by 3 for 3x=72
x= 24
check answer by using substitution method
3x-14=58
3(24)-14=58
72-18=58
58=58
Answer is C.(x=24)
Answer: The correct option is (A) 58.
Step-by-step explanation: We are given to find the length of JK in the given figure.
From the figure, we note that
JKLM is a parallelogram. So, the opposite sides of JKLM will be parallel and congruent.
Also, JK = 3x - 14 and LM = 58.
Since JK and LM are the opposite sides of the parallelogram JKLM , so we must have
[tex]JK=LM\\\\\Rightarrow 3x-14=58\\\\\Rightarrow 3x=58+14\\\\\Rightarrow 3x=72\\\\\Rightarrow x=\dfrac{72}{3}\\\\\Rightarrow x=24.[/tex]
Therefore, the length of JK is given by
[tex]JK=3x-14=3\times24-14=72-14=58.[/tex]
Thus, the length of JK is 58 units.
Option (A) is CORRECT.
What is the volume of an equilateral triangular pyramid with a side length of 8 cm and an altitude of 12 cm?
Answer:
256 cm³
Step-by-step explanation:
Here, V = (1/3)(area of base)(height), and the numbers here are
V = (1/3)(64 cm²)(12 cm) = 256 cm³
In triangle ABC, m?BAC = 50°. If m?ACB = 30°, then the triangle is triangle. If m?ABC = 40°, then the triangle is triangle. If triangle ABC is isosceles, and AB = 6 and BC = 4, then AC =
Answer: B.) an obtuse, C.) a right , C.) 4 or 6
Step-by-step explanation: i hope this helps :)
Josie rolls a six-sided die 18 times. What is the estimated number of times she rolls a two?
Answer:
3
Step-by-step explanation:
You have a 1 in 6 chance to roll a two. This means that every six times you roll a dice 1 of those should be a two (Obviously in the real world this wouldn't happen)
You roll the dice 18 TIMES and your chances are 1 in 6 so you take
[tex]18 \times \frac{1}{6} [/tex]
Answer:
the answer is 3
The sum of three squared and five squared
Answer:
34
Step-by-step explanation:
The sum of the 3rd and 5th square numbers is calculated by squaring 3 and 5, and then adding the results together, which gives us a total of 34.
The sum of the 3rd and 5th square numbers can be found by adding the squares of 3 and 5. A square number, or a perfect square, is a number that can be expressed as the product of an integer with itself. For example, to find the 3rd square number, we square 3 (3²), and for the 5th square number, we square 5 (5²).
So, calculating these we get:
3² = 3 * 3 = 95² = 5 * 5 = 25Now, to find the sum of the squares, we just add these two results together:
9 + 25 = 34
Therefore, the sum of the 3rd and 5th square numbers is 34.
The question is:
What is the sum of the 3rd and 5th square numbers?
Polygon D is a scaled copy of Polygon C using a scale factor of 6. How many times larger is the area of Polygon D than the area Polygon C? i need answers FAST PLEASEEEEEEEEEEEE
I need a more detailed question, but I think the answer is 6.
(x2 + 3x + 1)(x2 + x + 2)
Answer:
x^4 + 4x^3 + 6x^2 + 7x +2
Step-by-step explanation:
On Monday, Mr. Roberts drove 42 miles. On Tuesday, he drove 5 miles more than half the distance he drove on Monday. Which expression shows how you could find the distance, in miles, Mr. Roberts drove on Tuesday?( 42 ? 5 ) × 2 42 ? ( 5 × 2 ) ( 42 ÷ 2 ) ? 5 ( 42 ÷ 2 ) + 5
Answer: Last option
(42÷2) +5
Step-by-step explanation:
We know that Mr. Roberts drove 42 miles on Monday.
On Tuesday Mr. Roberts drove half of what he drove on Monday plus 5 miles.
If we want to know how many miles Mr. Roberts drove on Tuesday then we should divide 42÷2 to find half of 42.
[tex]\frac{42}{2} = 21[/tex]
Then we know that in addition to the 21 miles he drove 5 more miles. Then we add 21 +5 = 26 miles.
So the expression that gives us the number of miles that Mr. Roberts drove on Tuesday is:
(42÷2) +5
The answer is D trust me
A random selection of plants receiving two different types of treatments is measured for growth. The growth of the plants in each group is represented on the comparative box plot.
Two box-and-whisker plots. The first is titled, Treatment A, with left whisker 6, right whisker 11.25, left hand side of box 8, right hand side of box 9.5, and median 8.5. The second is titled, Treatment B, with left whisker 2, right whisker 7.5, left hand side of box 3.5, right hand side of box 6, and median 4.75.
What inference can be made from this sample data?
The range in growth for treatment B is much greater than the range in growth for treatment A.
Plants with treatment A in general grow more than plants with treatment B.
Both treatments have almost identical results in growth.
Plants with treatment B in general grow more than plants with treatment A.
Plant with treatment A in general grow more than plants with treatment B.
Picture below.
Answer:
Plants with treatment B in general grow more than plants with treatment A.Step-by-step explanation:Treatment A:
Least value or minimum value= 6
Maximum value= 11.25
First quartile or lower quartile i.e. [tex]Q_1[/tex]= 8
Middle quartile or Median i.e. [tex]Q_2[/tex]= 8.5
Upper quartile or third quartile i.e. [tex]Q_3[/tex]= 9.5
Range= Maximum value-Minimum value
= 11.25-6
= 5.25
Interquartile range ( IQR)= [tex]Q_3-Q_1[/tex]
= 9.5-8
= 1.5
Treatment B:
Least value or minimum value= 2
Maximum value= 7.5
First quartile or or lower quartile i.e. [tex]Q_1[/tex] = 3.5
Middle quartile or Median i.e. [tex]Q_2[/tex]= 4.75
Upper quartile or third quartile i.e. [tex]Q_3[/tex]= 6
Range= Maximum value-Minimum value
= 7.5-2
= 5.5
Interquartile range ( IQR)= [tex]Q_3-Q_1[/tex]
= 6-3.5
= 2.5
The range in growth for treatment B is not much greater than the range in growth for treatment A.
( since there is a very less difference in range
5.5-5.25=0.25)
Since, the IQR as well range of treatment B is greater than treatment A.
Hence, Plants with treatment B in general grow more than plants with treatment A.
Please help me out please
this is the answer, I guess.
Identify the rational numbers as positive or negative. +1/+7
Identify the rational numbers as positive or negative. +4/+4
Identify the rational numbers as positive or negative. +4/-5
Identify the rational numbers as positive or negative.+1/-7
Identify the rational numbers as positive or negative.-1/-7
Identify the rational numbers as positive or negative. -4/+5
1. Positive
2. Positive
3. Negative
4. Negative
5. Positive
6. Negative
When dividing, the only time you will get a negative answer is when only one of the numbers is negative
The identification of the rational numbers is as follows:
+1/+7: Positive+4/+4: Positive+4/-5: Negative+1/-7: Negative-1/-7: Positive-4/+5: NegativeTo identify whether the given rational numbers are positive or negative, we need to analyze each one based on the rules of sign with fractions. A rational number is any number that can be expressed as a fraction where the numerator and denominator are integers. In this context, if the numerator and denominator have the same sign, the fraction is positive. If they have different signs, the fraction is negative.
Let's evaluate each one:
+1/+7: Both the numerator (1) and the denominator (7) are positive, so this fraction is positive.
Result: Positive
+4/+4: Here too, both the numerator and denominator are positive, making this fraction positive.
Result: Positive
+4/-5: The numerator is positive (4) and the denominator is negative (-5), so this fraction is negative.
Result: Negative
+1/-7: Similar to the previous one, the numerator is positive (1) while the denominator is negative (-7), resulting in a negative fraction.
Result: Negative
-1/-7: Both the numerator (-1) and denominator (-7) are negative. Since a negative divided by a negative is positive, this fraction is positive.
Result: Positive
-4/+5: The numerator is negative (-4) and the denominator is positive (+5), making this fraction negative.
Result: Negative
What is the factored form of x12y18+1
the answer is........ B
For this case we must factor the following expression:
[tex]x^{12}y{18}+1[/tex]
We rewrite [tex]x^{12}y^{18}[/tex]as [tex](x ^ 4y ^ 6) ^ 3:[/tex]
[tex](x ^ 4y ^ 6) ^ 3 + 1[/tex]
Being both perfect cube terms, it is factored by applying the cube sum formula:
[tex]a ^ 3 + b ^ 3 = (a + b) (a ^ 2-ab + b ^ 2)[/tex]
Where:
[tex]a = x ^ 4y ^ 6\\b = 1[/tex]
So:
[tex](x ^ 4y ^ 6 + 1) ((x ^ 4y ^ 6) ^ 2-x ^ 4y ^ 6 + 1 ^ 2) =\\(x ^ 4y ^ 6 + 1) (x ^ {8} y ^ {12} -x ^ 4y ^ 6 + 1)[/tex]
Answer:
Option B
The measure of the space inside a 2d figure is called
Answer:
an area
Step-by-step explanation:
A two-dimensional (2D) figure is like drawing on a sheet of paper. It has some width and some length, but no height.
So, you cannot calculate its volume, since it has only 2 dimensions, a volume requires 3 dimensions.
The only spacial measure you can do on a two-dimensional figure is its area (basically length * width, if we talk about a rectangle, other forms have different calculation methods).
Answer:
A tree dimensional solid object bounded by six square faces
Identify m∠ACD. HELP ASAP!!
Answer:
<ACD = 35 degrees
Step-by-step explanation:
An intercepted angle is an arc segment of a circle whose endpoints connect at a point on the opposite side of the circle to create an angle. In this case arc AD is the intercepted arc of <ACD.
The measure of angle is half the measure of its intercepted arc.
AD measures 70 degrees, so divide this by 2.
70/2 = 35
<ACD = 35 degrees
A 22m ladder and a 20m ladder were leaned against a building. The bottom of the longer ladder was 4m farther from the building than the bottom of the shorter ladder, but both ladders reached the same distance up the building. Find this distance to the nearest tenth.
12.2m
15.3m
18.1m
19.2m
Answer:
Both ladder reaches 18.1 m up the building ⇒ 3rd answer
Step-by-step explanation:
* Lets study the information to solve the problem
- There are two ladders
- The lengths of them are 22 m and 20 m
- The bottom of the longer was 4 m farther than the bottom of the
shorter from the building
- Both of them reached the same distance up the building
* Lets solve the problem
- Let the distance between the bottom of the shorter ladder to the
building is x
∵ The bottom of the longer ladder is farther by 4
∴ The distance between the bottom of the longer ladder and the
building is x + 4
- Let the ladders reached the distance h up the building
* Now we have two right triangles
# Their hypotenuses are 22 and 20
# Their heights are h
# Their bases are x + 4 , x
- Lets find h in each triangle using the rule of Pythagoras
∵ (hypotenuse)² = (leg 1)² + (leg 2)²
# The longer ladder
∵ hypotenuse = 22
∵ leg 1 = x + 4
∵ leg 2 = h
∴ (22)² = (x + 4)² + h² ⇒ simplify
∴ 484 = (x + 4)² + h² ⇒ subtract (x + 4)² from both sides
∴ h² = 484 - (x + 4)² ⇒ (1)
# The shorter ladder
∵ hypotenuse = 20
∵ leg 1 = x
∵ leg 2 = h
∴ (20)² = (x )² + h² ⇒ simplify
∴ 400 = x² + h² ⇒ subtract x² from both sides
∴ h² = 400 - x² ⇒ (2)
- Equate (1) , (2) to find x
∴ 484 - (x + 4)² = 400 - x² ⇒ Add (x + 4)² and subtract 400 in both sides
∴ 84 = (x + 4)² - x² ⇒ open the bracket
∴ 84 = x² + 2(4)(x) + 4² - x² ⇒ simplify
∴ 84 = 8x + 14 ⇒ subtract 16 from both sides
∴ 68 = 8x ⇒ divide both sides by 8
∴ x = 8.5
- Substitute this value of x in (1) or (2) to find h
∵ h² = 400 - x²
∴ h² = 400 - (8.5)² = 327.75 ⇒ take √ for both sides
∴ h = 18.1
* Both ladder reaches 18.1 m up the building
How many millimeters are equal to 4 liters
Answer:
there is no relation between millimeters and liters
4000 milliliters = 4 liters
Step-by-step explanation:
"milli-" is a prefix meaning 1/1000. So 1 milliliter = (1/1000) liter. Thus it takes 1000 milliliters to make 1 liters, hence 4000 milliliters to make 4 liters.
_____
A meter, and a millimeter, is a measure of distance. A liter, and a milliliter, is a measure of volume. There is no sensible conversion between linear (one-dimensional) distance and 3-dimensional volume.
Converting liters to millimeters directly isn't typical because they represent different types of measurement: volume and length. However, in the context of a container's dimensions, it's needed to know that a 1-liter volume takes up a cube that is 10 cm (or 100 mm) on each side, and a 4-liter volume would be a cube of approximately 15.92 mm on each edge.
Explanation:To convert liters to millimeters, it's important to understand that these are units of different quantities: liters are a measure of volume, while millimeters are a measure of length. Therefore, converting between the two directly isn't possible or meaningful. However, if you have a container with a certain liter capacity and want to know its dimensions in millimeters, you could potentially do this if the shape of the container is known.
As a reminder, when dealing with volume in the metric system, one cubic decimeter (dm³) is equivalent to one liter. A cube with edge lengths of exactly one decimeter, therefore, would contain a volume of one liter. This works out to a cube that is 10 cm (or 100 mm) on each side to equal 1 liter of volume. So, for a 4-liter volume, considering a perfect cubic, each side would be the cubic root of 4000 mm³ which is approximately 15.92 mm.
Learn more about Volume Conversion here:https://brainly.com/question/35097419
#SPJ2
Which is the equation of the line with slope 5 that contains point (−2, −3)?
A. y – 2 = 5(x – 3)
B. y + 2 = 5(x – 3)
C. y + 3 = 5(x + 2)
D. y – 3 = 5(x – 2)
Answer:
Option C. [tex]y+3=5(x+2)[/tex]
Step-by-step explanation:
we know that
The equation of the line into point slope form is equal to
[tex]y-y1=m(x-x1)[/tex]
In this problem we have
[tex]m=5[/tex]
[tex](x1,y1)=(-2,-3)[/tex]
substitute the given values
[tex]y+3=5(x+2)[/tex]
Final answer:
The equation of the line with slope 5 that contains the point (-2, -3) is y + 3 = 5(x + 2), which corresponds to answer choice C.
Explanation:
To find the equation of the line with a given slope that contains a specific point, we can use the point-slope form of a linear equation, which is y - y1 = m(x - x1). In this equation, m is the slope and (x1, y1) is the point the line passes through. Given the slope is 5 and the point is (
-2, -3), we substitute these values into the formula: y - (-3) = 5(x - (-2)), which simplifies to y + 3 = 5(x + 2). Therefore, the correct answer is C.
Please help me out!! :)
Answer:
3.1 ft
Step-by-step explanation:
The segment from the centre of the circle to the chord is a perpendicular bisector.
Thus the third side of the right triangle is half of x
let the third side be a then x = 2a
Applying Pythagoras' identity to the right triangle with hypotenuse 2.1 then
a² + 1.4² = 2.1²
a² + 1.96 = 4.41 ( subtract 1.96 from both sides )
a² = 2.45 ( take the square root of both sides )
a = [tex]\sqrt{2.45}[/tex]
Hence x = 2 × [tex]\sqrt{2.45}[/tex] ≈ 3.1 ft
On equal intervals, the y-values of a quadratic function have a common _________
Answer:
second difference
Step-by-step explanation:
The differences of the y-values will differ by a common amount.
Example:
y = x^2 for x = 2, 4, 6, 8
y-values are 4, 16, 36, 64
differences of these are 12, 20, 28
differences of these differences are 8 and 8, a common value.
Answer:
For reference
Step-by-step explanation:
PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!
What is the value of x?
The Answer:
C. x=-1/2
Answer: [tex]\bold{C)\quad -\dfrac{1}{2}}[/tex]
Step-by-step explanation:
[tex]\dfrac{x+2}{15}=\dfrac{x+1}{5}\\\\\\\underline{\text{Multiply both sides by the LCD (15) to eliminate the denominator:}}\\x+2=3(x+1)\\x+2=3x+3\\.\quad \ 2=2x+3\\.\quad -1=2x\\\\.\quad \large\boxed{-\dfrac{1}{2}=x}[/tex]
Prehistoric cave paintings were discovered in a cave in France. The paint contained 15% of the original carbon-14. Estimate the age of the paintings. Use the formula.. "A=A0e^(-0.000121t)" to answer the question
Answer:
We have to determine the time it takes for carbon 14 to decay to 15% of its original amount.
The half life of carbon 14 is 5,730 years
elapsed time = half life * log (beginning amount / ending amount) / log 2
elapsed time = 5,730 * log (100 / 15) / log 2
elapsed time = 5,730 * 0.82390874094 / 0.30102999566
elapsed time = 5,730 * 2.7369655942
elapsed time = 15,683 years
= 15,700 years
Step-by-step explanation:
Solving the exponential equation, it is found that the painting is 15,679 years old.
The amount of carbon-14 after t years is modeled by the following equation:
[tex]A(t) = A(0)e^{-0.000121t}[/tex]
It retains 15% of the original amount, thus:
[tex]A(t) = 0.15A(0)[/tex]
Solving for t, we find the age.
[tex]0.15A(0) = A(0)e^{-0.000121t}[/tex]
[tex]e^{-0.000121t} = 0.15[/tex]
[tex]\ln{e^{-0.000121t}} = \ln{0.15}[/tex]
[tex]-0.000121t = \ln{0.15}[/tex]
[tex]t = -\frac{\ln{0.15}}{0.000121}[/tex]
[tex]t = 15679[/tex]
The painting is 15,679 years old.
A similar problem is given at https://brainly.com/question/16725555