Make the denominator equal for each. I'm going with the denominator 30.
For 1/2: Multiply the denominator and numerator by 15 to get...
[tex]\frac{15}{30}[/tex]
For 1/5: Multiply the denominator and numerator by 6 to get...
[tex]\frac{6}{30}[/tex]
For 1/6: Multiply the denominator and numerator by 5 to get...
[tex]\frac{5}{30}[/tex]
Since now the denominators for all are the same, we can compare it properly seeing that 1/2 is the largest, then 1/5, and then 1/6 is the smallest.
Use the graph to answer the questions
WILL MARK BRAINLIEST!!
The diagram of the Gateway Arch on the coordinate plane, analyzed using quadratic equations indicates;
1. The vertex point is (50, 630)
2. The solution point are; (20, 0), and (80, 0)
3. Vertex form; f(x) = -0.7·(x - 50)² + 630
4. Factored form; f(x) = -0.7·(x - 20)·(x - 80)
What is a quadratic equation?A quadratic equation is an equation of the form f(x) = a·x² + b·x + c
1. The vertex obtained from the graphical diagram of the Gateway Arch indicates that the point corresponding to the vertex point is; (50, 9 × 70 = 630)
The vertex point is; (50, 630)
2. The solution are the points the curve of the Gateway intersects the x-axis, which are points where the y-axis values are zero, therefore;
The solutions are; (20, 0), and (80, 0)
3. The vertex form of a quadratic equation is; f(x) = a·(x - h)² + k
Where;
(h, k) = The coordinates of the vertex
Therefore;
(h, k) = (50, 630)
f(20) = 0 = a·(20 - 50)² + 630
a·(20 - 50)² = -630
a = -630/((20 - 50)²) = -630/900 = -7/10
a = -7/10 = -0.7
The vertex form quadratic equation is therefore; f(x) = -0.7·(x - 50)² + 630
4. The factored form of a quadratic equation is; f(x) = a·(x - r₁)·(x - r₂)
r₁ = 20, and r₂ = 80, a obtained from the vertex is; a = -0.7
The factored form is therefore; f(x) = -0.7·(x - 20)·(x - 80)
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Liam has 24 yellow pencils, 15 red pencils,
and 9 blue pencils. How many pencils does
he have altogether?
Answer:
48
Step-by-step explanation:
since you are trying to find the number of pencils altogether, you add 24, 15, and 9. 24+15+9= 48
I hope this helped! :)
Find the area of the circle with a circumference of
. Write your solution in terms of
.
Area in terms of
: ______
Answer:
circumference of a circle is
[tex]2\pi\:r[/tex]
And the area of the circle is
[tex]\pi \: r {}^{2} [/tex]
Determine whether the following statements are TRUE or FALSE (do not write down the statements
just state TRUE or FALSE). [7 marks]
a. () ≥ 1 for any event .
b. () = 1 where is the Sample space.
c. If {} is any finite or infinite sequence of disjoint events, then (⋃
=1 ) = ∑ ()
=1 .
d. If ⊆ where and are two events in a sample space, then () ≤ ().
e. If and are two events in a sample space, then ( ∪ ) = () − () + ( ∩ ).
f. If and are two independent events in a sample space, then ( ⁄ ) = (∩)
() .
g. Mutually exclusive events are not independent
a. TRUE, b. TRUE, c. TRUE, d. TRUE, e. TRUE, f. FALSE, g. TRUE
How to determine whether the following statements are TRUE or FALSEa. TRUE: The probability of an event can never be negative, and can at most be equal to 1, which represents certainty.
b. TRUE: The sample space is the set of all possible outcomes of an experiment, and the probability of the sample space is always equal to 1, since one of the outcomes must occur.
c. TRUE: If the events in a sequence are disjoint, then they have no outcomes in common, so the probability of the union of the events is the sum of the probabilities of the individual events.
d. TRUE: If one event is a subset of another event, then the probability of the subset is less than or equal to the probability of the superset. This follows from the fact that the subset contains fewer outcomes than the superset.
e. TRUE: The probability of the union of two events is the probability of the first event plus the probability of the second event, minus the probability of the intersection of the events, which is the probability of both events occurring together. This is known as the inclusion-exclusion principle.
f. FALSE: The formula (P(A ∩ B) = P(A)P(B)) only applies to independent events, but not all independent events are mutually exclusive. For example, if A is the event of rolling a 4 on a die, and B is the event of rolling an even number, then A and B are independent, but not mutually exclusive.
g. TRUE: If two events are mutually exclusive, then they have no outcomes in common, so the occurrence of one event tells us that the other event cannot occur. This dependence means that the events are not independent.
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Work out sheet below please
Answer:
-4 + 8 = 4
-2 + 6 = 4
-1 + 5 = 4
So the three pairs are -4 and 8; -2 and 6; and -1 and 5.
What is 7months as a fraction of 2years 3months
Step-by-step explanation:
2 years and 3 months = 27 months ( there is 12 months in a year)
7 months of this would be THIS fraction:
7/27
The table shows the age distribution of members of a gym. A member of gym is chosen at random. What is the probability that the person is: a) 21 or more b) 55 or less c) not in the 21 to 35 age group
The probability that the selected member is 21 or more is 88%.
The probability that the selected member is 55 or less is 86%.
The probability that the selected member is not in the 21 to 35 age group is 58%.
Finding probabilities:The basic probability formula of dividing the number of favorable outcomes by the total number of outcomes.
In this case, we are given the percentage of members in each age group, and we need to find the probability of selecting a member with a certain age range.
Here we have
The table shows the age distribution of members of a gym.
Age - Under 21 21 -35 36 - 55 Over 55
percentage 12 42 32 14
a) To find the probability that the selected member is 21 or more,
Add the percentage of members who are 21-35, 36-55, and over 55 since all of these age groups are 21 or more.
Probability (21 or more)
= Percentage (21-35) + Percentage (36-55) + Percentage (Over 55)
= 42% + 32% + 14%
= 88%
b) To find the probability that the selected member is 55 or less,
Add the percentage of members who are under 21, 21-35, and 36-55 since all of these age groups are 55 or less.
Probability (55 or less)
= Percentage (Under 21) + Percentage (21-35) + Percentage (36-55)
= 12% + 42% + 32%
= 86%
c) To find the probability that the selected member is not in the 21 to 35 age group,
Add the percentage of members who are under 21, 36-55, and over 55 since all of these age groups are not in the 21 to 35 age group.
Probability (not in the 21 to 35 age group)
= Percentage (Under 21) + Percentage (36-55) + Percentage (Over 55)
= 12% + 32% + 14%
= 58%
Therefore,
The probability that the selected member is 21 or more is 88%.
The probability that the selected member is 55 or less is 86%.
The probability that the selected member is not in the 21 to 35 age group is 58%.
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Research and find out the 10 countries where the population. is growing fastest and the 10 countries where it is the slowest growing. Explain how this information is related to the concept of percentage increase and decrease. You can either present this on a chart or have someone film you are explaining it.
Write Percent as a decimal 42.15%
Answer:
42.15 as a decimal is 0.4215 and you can multiply 0.4215 by a number to get 42.15 percent of that number.
Step-by-step explanation:
So the answer is 0.4215
Hope this helps! =D
Answer:0.4215
Step-by-step explanation:
42.15%÷100=0.4215
You have a square pyramaid the area of the square is 25 cm and the slant height of the pyramaid is 10 find the total surface area of the pyramaid
Answer:
125cm^2
Step-by-step explanation:
the area of a triangle is b*h/2 and area of a square is side*side so since the area of the square is 25 the side length must be 5 because 5*5=25
that being said we use 5 as base for the triangles and 10 as height
area of a triangle= 5*10/2=25 since there are 4 triangles 25*4=100cm^2 +square base (25 cm^2)=125cm^2
Part A Select the location of -2 and -9 on the number line. Select the places on the number line to plot the points. -10 20 10 Part B Use mathematical symbols to write an inequality that compares -2 and -9. Explain how the number line can be used to show that your inequality is correct. Enter your inequality and your explanation in the space provided. 109 10 - Math symbols + px C 1 1 0 ▷ Relations ▸ Geometry X . 00 1.1 0.8
It should be noted that to select the location of -2 and -9 on the number line, the steps are given below.
What are the steps?Draw a number line with zero in the center and a positive direction to the right and a negative direction to the left.
Find the position of -9 by counting 9 units to the left of zero on the number line. Mark this point with a dot or a cross.
Find the position of -2 by counting 2 units to the left of zero on the number line. Mark this point with a dot or a cross.
Label the points as -9 and -2 to indicate their values.
Your number line should now have two marked points at positions -9 and -2.
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Help I do not knwo how to solve.
still 7 inches since translation and rotation do not affect area, angles and the length of the sides. Therefore, if you look at the angles, CA will be the same as DF
You draw a card at random from a deck that contains
3
33 black cards and
7
77 red cards.
What is
P(draw a black card
)
P(draw a black card)start text, P, left parenthesis, d, r, a, w, space, a, space, b, l, a, c, k, space, c, a, r, d, end text, right parenthesis?
If necessary, round your answer to
2
22 decimal places.
The probability of drawing a black card is P(draw a black card) = 0.3 or 30%.
Describe Probability?Probability is a branch of mathematics that deals with the study of random events and the likelihood or chance of their occurrence. It is the measure of how likely or unlikely it is for an event to happen. The probability of an event is a number between 0 and 1, where 0 means that the event is impossible, and 1 means that the event is certain to occur.
Probability can be calculated by dividing the number of favorable outcomes by the total number of possible outcomes. For example, if we want to calculate the probability of flipping a coin and getting heads, we divide the number of ways to get heads (1) by the total number of possible outcomes (2), which gives us a probability of 1/2 or 0.5.
Probability is used in many real-world applications, such as in the fields of finance, insurance, and engineering, to make informed decisions based on the likelihood of an event occurring. It is also used in statistical analysis to make inferences about a population based on a sample of data.
The total number of cards in the deck is:
Total number of cards = number of black cards + number of red cards = 33 + 77 = 110
The probability of drawing a black card is given by:
P(draw a black card) = (number of black cards) / (total number of cards) = 33 / 110
Therefore, the probability of drawing a black card is:
P(draw a black card) = 0.3 or 30%
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4p + 1 < −11 or 6p + 3 > 39
The solution to the compound inequality 4p + 1 < −11 or 6p + 3 > 39 is p > 6 or p > -3.
What is compound inequality?A compound inequality is a mathematical statement that involves two or more inequalities joined by either the word "and" or "or". The solution set of a compound inequality is the set of all values that satisfy both (in the case of "and") or either (in the case of "or") of the individual inequalities.
According to question:Let's solve each inequality separately:
4p + 1 < −11
Subtracting 1 from both sides, we get:
4p < -12
Dividing both sides by 4 (and remembering to flip the inequality because we are dividing by a negative number), we get:
p > -3
So the solution to the first inequality is:
p > -3
Now let's look at the second inequality:
6p + 3 > 39
Subtracting 3 from both sides, we get:
6p > 36
Dividing both sides by 6, we get:
p > 6
So the solution to the second inequality is:
p > 6
Therefore, the solution to the compound inequality 4p + 1 < −11 or 6p + 3 > 39 is:
p > 6 or p > -3
This can be written more simply as:
p > -3
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5
The edge of a cube-shaped box measures 1 foot long. Three students each
made an observation about the box.
• Grace said that the perimeter of each face is 48 inches long.
• Maddy said that the area of each face is 144 square inches.
• Elena said that the volume of the box is 3 cubic feet.
Whose observations are correct?
A Grace, Maddy, and Elena
B Elena and Grace
C Grace and Maddy
D Elena and Maddy
The only observations that are correct are Grace's and Maddy's. The answer is Option C.
Whose observations are correct among Grace, Maddy and Elena?We can start by finding the perimeter, area, and volume of one face of the cube, and then see which observation is correct.
The perimeter of one face of the cube is 4 times the length of one edge, which is:
= 4 × 12 inches
= 48 inches. So Grace's observation is correct.
The area of one face of the cube is the length of one edge squared, which is:
= 12 inches × 12 inches
= 144 square inches. So Maddy's observation is also correct.
The volume of the cube is the length of one edge cubed, which is:
= 1 foot × 1 foot × 1 foot
= 1 cubic foot. So Elena's observation is not correct.
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A hiker on the Appalachian Trail planned to increase the distance covered by 10% each day. After 7 days, the total distance traveled is 56.923 miles.
Part A: How many miles did the hiker travel on the first day? Round your answer to the nearest mile and show all necessary math work. (4 points)
Part B: What is the equation for Sn? Show all necessary math work. (3 points)
Part C: If this pattern continues, what is the total number of miles the hiker will travel in 14 days? Round your answer to the hundredths place and show all necessary math work. (3 points)
Let x be the distance traveled on the first day. Then, the distance traveled on the second day is 1.1x, on the third day is 1.1(1.1x) = 1.21x, and so on. After 7 days, the total distance traveled is:
x + 1.1x + 1.21x + ... + (1.1)^6 x = 56.923
Using the formula for the sum of a geometric series, we have:
x(1 - (1.1)^7)/(1 - 1.1) = 56.923
x(1 - 1.1^7)/(-0.1) = 56.923
x = 56.923(-0.1)/(1 - 1.1^7) ≈ 4 miles
Therefore, the hiker traveled approximately 4 miles on the first day.
The equation for Sn, the sum of the first n terms of the sequence, is:Sn = x(1 - r^n)/(1 - r)
where x is the first term, r is the common ratio (in this case, 1.1), and n is the number of terms.
Using the equation for Sn from Part B, we can find the total number of miles the hiker will travel in 14 days:S14 = x(1 - 1.1^14)/(1 - 1.1)
S14 ≈ 167.63
Therefore, the hiker will travel approximately 167.63 miles in 14 days.
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At Amy's Pizza Palace, the cost of a pizza depends on the number of toppings. The graph shows this relationship.
247
21
Cost of Pizza
(in $)
18-
15-
12-
9
6-
3-
1
2
6
3 4
Number of Toppings
7
TURUDANY
According to this graph, what is the meaning of the v-intercept?
The cost of pizza with no toppings is $6. So correct option is C.
Describe Graph?A graph is a visual representation of data or information, typically shown on a coordinate plane or a network of nodes and edges. Graphs are used to help people understand complex information by presenting it in a clear and concise way.
There are many different types of graphs, including bar graphs, line graphs, scatter plots, pie charts, and network graphs. Each type of graph is best suited for representing different types of data. For example, bar graphs are used to represent discrete data or data that can be divided into categories, while line graphs are used to represent continuous data or data that changes over time. Scatter plots are used to represent the relationship between two variables, while pie charts are used to represent percentages or proportions. Network graphs are used to represent complex systems of relationships between objects or people.
Graphs are commonly used in fields such as business, economics, science, and engineering to help people understand trends, patterns, and relationships in data. They can also be used to make predictions, identify outliers or anomalies, and communicate results to others. In addition, graphs can be customized to suit the needs of different audiences, such as by adding labels, titles, and other visual elements to make the data more understandable.
Because when x is 0 ,y is 6. So, the y intercept is the cost of a pizza with no toppings is $6.
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The complete question is:
Given this equation what is the value of x at the indicated point?(image)
Answer:
[tex]x=-2[/tex]
Step-by-step explanation:
The equation [tex]y=\frac{7}{2}x+3[/tex] tells us that, to find y, we must multiply x by [tex]\frac{7}{2}[/tex] and then add 3. Here, we are given the y value. We simply must plug in y and solve for x.
We are given: the equation [tex]y=\frac{7}{2}x+3[/tex], and [tex]y=-4[/tex]
So, we have:
[tex]y=\frac{7}{2}x+3 =\\\\-4 =\frac{7}{2}x+3[/tex]
Solve for the variable x.
[tex]-4=\frac{7}{2}x+3=\\\\\\-7 = \frac{7}{2}x =\\-14 = 7x=\\-2 = x[/tex]
Therefore, when y is equal to -4, x is equal to -2.
Find the area of the trapezoid 11 yd 11 yd 7 yd
Answer:
Step-by-step explanation:
A=1/2(b1+b2)h
=1/2 (11yd+11yd)(7yd)
=1/2(22yd)(7yd)
=(11yd)(7yd)
=77yd
Lisa wants to place a border around a square bulletin board in her classroom. How long should the border be if one of the sides of the bulletin board is 9ft ?
Answer:
36 ft
Step-by-step explanation:
9x4=36. if the bulletin board is 9ft on each side, (9x4) the amount of border she needs would be 36ft.
Use the box plot showing the ages of those who watch the television show 'The Code" to answer the question that follows.
Which value is the best approximation for the range in ages for the middle 50% of viewers?
A) 10
B) 15
C) 20
D) 45
The range in ages for the middle 50% of viewers is the interquartile range (IQR), which is the height of the box in the box plot. The best approximation is C) 20.
What is interqurtile range?The interquartile range (IQR) is a measure of statistical dispersion that represents the difference between the 75th percentile (Q3) and the 25th percentile (Q1) of a dataset. It is a useful measure of spread because it is not influenced by outliers.
What is Range?Range is a statistical measure that represents the difference between the highest and lowest values in a set of data. It provides a simple indication of the spread or variability of the data.
According to the given information:
A box plot is a graphical representation of the distribution of a dataset. The box in the plot represents the middle 50% of the data, with the lower end of the box representing the 25th percentile (Q1) and the upper end of the box representing the 75th percentile (Q3). The distance between Q1 and Q3, which is represented by the height of the box, is called the interquartile range (IQR).
To answer the question, we need to find the best approximation for the range in ages for the middle 50% of viewers. From the box plot, we can see that the height of the box is approximately 20 units, which is the IQR. Therefore, the best approximation for the range in ages for the middle 50% of viewers is option C) 20. This means that 50% of viewers are between Q1-10 to Q3+10, where Q1 is the 25th percentile and Q3 is the 75th percentile.
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Rita read 1,362 words in 6 minutes. Joy read 1,456 words in 7 minutes. Who read at the faster rate? Joy read at the faster rate because 208 words per minute < 227 words per minute. Rita read at the faster rate because 227 words per minute > 208 words per minute. Joy read at the faster rate because 208 words per minute > 227 words per minute. Both Rita and Joy read at the same rate.
The correct answer is "Rita read at the faster rate because 227 words per minute > 208 words per minute".
How do you calculate rate of something?The rate of something is a measure of how fast or slow it changes over time or another variable. The general formula for calculating rate is:
Rate = Change in value / Time interval or Change in value / Change in another variable Rates can be expressed in different units, such as miles per hour, dollars per day, or units per minute. It's important to ensure that the units are consistent throughout the calculation to obtain accurate results. In summary, the rate of something can be calculated by dividing the change in value by the time interval or the change in another variable.
To find out who read at the faster rate, we need to calculate the rate of reading for each person. We can do this by dividing the number of words read by the time taken to read them.
Rita's reading rate = 1362/6 = 227 words per minute
Joy's reading rate = 1456/7 = 208 words per minute
Therefore, Rita read at a faster rate than Joy, with a reading rate of 227 words per minute compared to Joy's reading rate of 208 words per minute.
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Please help me i really need this done
Answer:
Step-by-step explanation:
4-10(9m-7)
4-90m+70
74-90m
56x+24/8
8(7x + 3)/8
7x + 3
24r + 16
8(3r + 2)
is 2m-3 same as 4(1/2m-3)
2m-3 = 2m-12
: no
-2(10-15x) same as 14x-20+16x
-20+30x = -20+30x
: yes
Given this equation what is the value of y at the indicated point?
Using curves, we can find that the value of y at the indicated point on the curve is √3.
What is the definition of curves?
A smooth-drawn figure or line with a bend or turns is referred to as a curve. A circle is an illustration of a curved shape. Geometry is a subfield of mathematics that examines the dimensions, characteristics, and shapes of figures.
Here in the question,
Given equation:
x = y² - 2
As a point (1, y) is on the curve, we can put the value of x coordinate in the equation:
1 = y² - 2.
Adding 2 on both sides:
1 + 2 = y² - 2 + 2
⇒ 3 = y²
⇒ y = √3.
Therefore, the value of y at the indicated point on the curve is √3.
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please help me fill these boxes
The measurements for area of Jacobs yard are;
Part A = 6m x 3m = 18m
Part B = 4.5m x 3m = 13 m
Part C = 1/2 x 3m x 3m = 4.5 m²
Total area = 18m² + 13.5m² + 4.5m² = 36m²
How do you identify sections that would help in calculating area?To identify sections that would help in calculating area, you need to look for shapes or figures that can be divided into simpler geometric shapes, such as squares, rectangles, triangles, and circles.
Once you have identified the simpler shapes, you can use their formulas to calculate their areas and then add them together to find the total area of the larger shape or figure.
For example, a rectangle can be divided into two triangles or two smaller rectangles, and a circle can be divided into a sector or a ring. Breaking down a larger shape into smaller, simpler shapes can make it easier to calculate their areas accurately.
Jacob is putting tiles on the section of his yard labeled A, B, C. What is the area of the parts that need tiles?
Part A = .............. x ........... = ...........m
Part B = + .............. x ............. = ............ m
Part C = 1/2 x ................. x ............ = ............... m²
Total area = ................... + ..................... + .................. = ..............m
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Find any solution(s) (refer to attachment) of and select the correct statement.
A. The equation has no solution.
B. The equation has two solutions.
C. The equation has one solution.
D. The equation has one solution and one extraneous solution.
Help please i need this asap!! I'll give 100 points
The range is expressed in interval notation as (-1, ∞)
How to find the function (f+g)(x)?To find the linear function f(x), let us use the table given.
A linear function with the following equation that passes through the points (a, g(a)) and (b, g(b)):
[tex]g(x) - g(a) = \frac{g(b)-g(a)}{b-a} (x-a)[/tex]
Because the g(x) line crosses through points (-6, 14) and (-3, 8), we have:
a = -6, g(a) = 16, b = -3 and, g(b) = 10
Therefore g(x)
[tex]g(x) - (16) = \frac{10-16}{-3-(-6)} (x--(6))\\g(x) - 16 = \frac{10-16}{-3+6} (x+6)\\g(x) - 16 = \frac{-6}{3} (x+6)\\g(x) - 16 = -2(x +6)\\g(x) = -2x -12+16\\g(x) = -2x+4[/tex]
now find the (f+g)(x).
[tex](f+g)(x) = f(x) + g(x) = x^{2} + 2x -5 -2x + 4\\(f+g)(x) = f(x) + g(x) = x^{2} - 1\\[/tex]
(f+g)(x) = (x-1)(x+1), therefore we get the values x = 1 and x = -1
The parabola's vertice has x-coordinate 0 (the midway between the roots). At x = 0, we get:
[tex](f +g)(x) = 0^{2} - 1 = -1[/tex]
Furthermore, because the coefficient of [tex]x^{2}[/tex] is 1, which is positive, this function indicates a parabola that has been opened upwards.
As a result, the function's minimal value is y = -1. As a result, the function's range includes all real numbers equal to or greater than -1.
The range is expressed in interval notation as (-1, ∞)
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What is 47/ 30 in mixed numbers I'm giving 10 points must hurry
Answer:
1 17/30.
Step-by-step explanation:
you can find this out by seeing how many 30s go into 47 which is 1.
Then subtract to find how much is leftover still over 30.
47 - 30 = 17
So 1 and 17/30
The daily profit, P(x), of an oil refinery is given by P(x) = 8x -0.02x², where x is the
number of barrels of oil refined.
a. How many barrels should be refined to maximize the profit?
b. What is the maximum profit?
Answer: a. To find the number of barrels that should be refined to maximize profit, we need to find the critical point of the function P(x), which occurs where the derivative of P(x) equals zero.
P(x) = 8x - 0.02x²
P'(x) = 8 - 0.04x
Setting P'(x) = 0, we get:
8 - 0.04x = 0
Solving for x, we get:
x = 200
Therefore, 200 barrels should be refined to maximize the profit.
b. To find the maximum profit, we substitute x = 200 into the profit function P(x):
P(200) = 8(200) - 0.02(200)²
P(200) = 1600 - 800
P(200) = 800
Therefore, the maximum profit is $800.
Step-by-step explanation:
Two trees are planted next to each other. One tree is 3 meters tall and casts a 15-meter shadow. Determine the height of the other tree if it casts an 18-meter shadow.
1.2 m
3.6 m
4.5 m
5.1 m
Answer:
3.6 m
Step-by-step explanation:
[tex] \frac{3}{15} = \frac{h}{18} [/tex]
[tex]15h = 54[/tex]
[tex]h = \frac{18}{5} = 3.6[/tex]
Answer:
3.6 meters.
Step-by-step explanation:
We can use the concept of similar triangles to solve this problem. The ratio of the height of the first tree to its shadow length is the same as the ratio of the height of the second tree to its shadow length.
Let h1 be the height of the first tree, s1 be its shadow length, h2 be the height of the second tree, and s2 be its shadow length.
For the first tree: h1/s1 = 3/15
For the second tree: h2/18 = 3/15
Solving for h2:
h2 = (18 * 3) / 15 = 3.6 meters
Therefore, the height of the second tree is 3.6 meters.