To find the quadratic function f(x) = ax² + bx + c that goes through (4, 0) and has a local maximum at (0, 1), we can follow these steps:
Step 1: Find the vertex form of the quadratic function Since the vertex of the quadratic function is at (0, 1), we can use the vertex form of the quadratic function:
f(x) = a(x - h)² + k, where (h, k) is the vertex. Substituting the given vertex (0, 1), we get:
f(x) = a(x - 0)² + 1f(x) = ax² + 1Step 2: Find the value of aTo find the value of a, we can substitute the point (4, 0) in the equation:
f(x) = ax² + 1Substituting (4, 0), we get:0 = a(4)² + 1Simplifying, we get:
16a = -1a = -1/16
Step 3:
Find the value of b and cUsing the values of a and the vertex (0, 1), we can write the quadratic function as:f(x) = (-1/16)x² + 1To find the values of b and c, we can use the point (4, 0):
0 = (-1/16)(4)² + b(4) + c0 = -1 + 4b + c
Solving for c, we get:c = 1 - 4bSubstituting this value of c in the above equation, we get:0 = -1 + 4b + (1 - 4b)0 = 0Since the above equation is true for all values of b, we can choose any value of b. For simplicity, we can choose b = 1/4. Then:c = 1 - 4b = 1 - 4(1/4) = 0
Therefore, the quadratic function that goes through (4, 0) and has a local maximum at (0, 1) is:f(x) = (-1/16)x² + (1/4)x + 0, orf(x) = -(1/16)x² + (1/4)x.
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Graph this line using the slope and y-intercept:
y= -9x +5
An artist draws a square chalk mural with side length a. The artist decides to enlarge the mural. The area of the new mural is represented by (5a)(3a + 2).
Simplify the expression (5a)(3a + 2).
8a + 2
15a2 + 10a
15a2 + 10
8a2 + 10a
The expression (5a)(3a + 2) simplifies to 15a^2 + 10a. This is obtained by multiplying 5a with both terms inside the parentheses using the distributive property. The final result cannot be further simplified. So, Option B is correct. Option B.
To simplify the given expression, (5a)(3a + 2), we apply the distributive property to distribute the factor 5a to both terms inside the parentheses. This involves multiplying 5a by each term separately.
First, we multiply 5a by 3a. Multiplying these two terms gives us 15a^2, where the coefficient 15 comes from multiplying 5 by 3 and the variable a is squared due to the multiplication of two a's.
Next, we multiply 5a by 2. This multiplication results in 10a, where the coefficient 10 comes from multiplying 5 by 2, and the variable a remains unchanged.
Combining the two simplified terms, we have 15a^2 + 10a. This expression cannot be further simplified because there are no like terms to combine.
The term 15a^2 represents the enlarged area of the mural, obtained by multiplying the lengths of the sides of the original square mural (side length a) by the factor 5 and squaring the variable a. The term 10a represents an additional area added during the enlargement process, obtained by multiplying the side length a by the factor 2.
In conclusion, the simplified form of (5a)(3a + 2) is 15a^2 + 10a. So OptioN B is correct.
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Convert 14ML (megalitres) iinto kilolitres
Answer:
14000Kilolitres
Step-by-step explanation:
\( 1megalitre = 1000kilolitres \\ \)
\(14megalitres = xkilolitres\)
Cross multiply
\(14 \times 1000 = xkilolitres\)
\(14megaitres = 14000kilolitres\)
A scientist keeps track of bacteria cells. She starts with 1 cell. After one hour, there are 2 cells. The number of cells continues to double in each of the following hours
Answer:
the number of cells increases by a factor of 2.
Explanation:
the number of cells doubles with each hour, which means that they are multiplied by 2. thus, the number of cells increases by a factor of 2.
i hope this helps! :D
Answer: The number of cells increases by a factor of 2.
After four hours, the number 2 is used as a factor 4 times.
Step-by-step explanation: The cells multiply by 2, and make double the amount of cells.
The number 2 is used 4 times after 4 hours to make 16 cells.
Given: C-20= 4-3c
Prove: c= 6
Answer:
Step-by-step explanation:
just plug in c
6-20 = 4 - 3(6)
When 293 college students are randomly selected and surveyed, it is found that 114 own a car. The upper limit for the 90% confidence interval for the percentage of all college students who own a car is __
O 31.6% O 46.3% O 44.5% O43.6%
When 293 college students are randomly selected and surveyed, it is found that 114 own a car. The upper limit for the 90% confidence interval for the percentage of all college students who own a car is 46.3%.
The given problem is an example of confidence intervals in statistics. The formula for finding the confidence interval in percentage is given below:
Confidence Interval in Percentage = P ± Z Score x √ (PQ/n)
where
P = Sample proportion
Q = 1 - P
n = Sample Size
Z Score is obtained from the Z-Table where the confidence level is given.
To obtain the upper limit, the following formula should be used:
Upper Limit of the Confidence Interval = P + Z Score x √ (PQ/n)
Substitute the given values of the question into the formula:
P = 114/293 = 0.3891
Q = 1 - 0.3891 = 0.6109
n = 293
The upper limit for the 90% confidence interval is given by the Z-Table at 1.645:
Upper Limit of the Confidence Interval = 0.3891 + 1.645 x √ [(0.3891 x 0.6109)/293]
≈ 0.3891 + 1.645 x 0.0467
≈ 0.3891 + 0.07701
≈ 0.4661 = 46.3%
Therefore, the answer is 46.3%.
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Write 0.2 repeating as a fraction in simplest form (The 0.2 is repeating, so the 2 has the repeating bar above it, just need someone to solve this, it would help a lot thanks.)
If x is the number 0.222…, then 10x = 2.222…. Subtracting x from 10x eliminates the fractional part, so that
10x - x = 2.222… - 0.222…
==> 9x = 2
and solving for x gives x = 2/9.
A box contains hair clips of 3 diff sizes. -15 small hair clips -12 medium hair clips -6 large hair clips
If one hair clip is randomly selected from the box,what is the probability that the hair clip will be either small or medium?
A)9/11
B)3/7
C)2/9
D)1/6
The answer of the given question based on probability is , option (A) 9/11.
What is Probability?Probability is measure of likelihood of event occurring. It is number between 0 and 1, where 0 means that event is impossible, and 1 means that event is certain to occur. The probability of event can be expressed as fraction, a decimal, or a percentage. For example, if the probability of an event is 1/4, it means that there is a 25% chance of the event occurring.
The total number of hair clips in the box is:
Total number of hair clips = 15 (small) + 12 (medium) + 6 (large) = 33
The probability of selecting a small or medium hair clip is the sum of the probabilities of selecting a small hair clip and a medium hair clip:
P(small or medium) = P(small) + P(medium)
The probability of selecting a small hair clip is:
P(small) = number of small hair clips / total number of hair clips
= 15 / 33
The probability of selecting a medium hair clip is:
P(medium) = number of medium hair clips / total number of hair clips
= 12 / 33
Therefore, the probability of selecting a small or medium hair clip is:
P(small or medium) = P(small) + P(medium)
= 15/33 + 12/33
= 27/33
= 9/11
So the answer is (A) 9/11.
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a senate committee has 8 republicans and 6 democrats. in how many ways can we form a subcommittee of 5 members that has at least one member from each party?
There are 10560 ways we form a subcommittee of 5 members that have at least one member from each party.
Combinations are defined as the selections made by taking some or all of a number of objects, irrespective of their arrangements.
The number of combinations of n different things taken r at a time, denoted by nCr and it is given by,
\(^nC_{r} =\frac{n!}{r!(n-r)!}\)
where 0 ≤ r ≤ n.
The given information is committee has 8 republicans and 6 democrats.
we have to form a subcommittee of 5 members with at least one from each group.
Hence we need to select one from each and then the remaining 3 can be of any type.
No of ways = ⁸C₁*⁶C₁*¹²C₃
= 48*220
No of ways=10560 ways.
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A bottle contains 1.6L of water a second bottle constrains 390 mL of water what is the total number of mL in both bottles
Answer:
1990 ml is the answer thank you
What are the 3 shortcuts to prove triangles are similar?
In order to prove the triangles are similar, you have to use SAS, SSS and AA rule.
In triangle, the similarity theorem states that if they have the same ratio of corresponding sides and equal pair of corresponding angles.
Here we have to find the 3 shortcuts to prove the triangles are similar.
According to the similarity theorem, here we have triangle that is similar to other if two pairs of angles are congruent (AA) or if two pairs of sides are proportional and the included angles are congruent whereas if three pairs of sides are proportional (SSS).
Here we must know that the term similarity and congruent are similar terms.
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There are 18 girls on the swim team and 12 boys on the swim team what percent of the team is made up of boys
Answer:
40%
Step-by-step explanation:
So add 18 and 12 makes 30. Then divide 30 with a common factor say 6. so there is 5 6s in 30 so each 6 is equivalent to 20 percent there are 2 6s in 12 so it is 40 percent
PLEASE HELP An equation in the form y = mx + b is in standard form. True False
Answer: False!
This equation is in slope - intercept form, which is used to calculate and graph a line, and/or find the y - intercept and slope of a line. The standard form would be the equation before it was converted into slope - intercept form.
Hope this helps!
Answer:
False
Step-by-step explanation:
The y=mx+b form is called the slope-intercept form.
● m is the slope
● b is the y-intercept
● x is the variable (the input)
● y is the output
5+6-1+5=? Please and thank you
I need help with this question can anyone help?
Answer:
the answer is 6 just check it
you buy 6 apples for $2.70 write and equation that can be used to express the relationship between the total price t and the number of apples a you buy.
1. t= 2.70a
2. t=0.45a
3. t=6a
t= 2.22a
Answer:
The correct answer is: 2. t=0.45a
Step-by-step explanation:
Let t be the price of apples
and a be the number of apples
The price and quantity are directly proportional
\(t \propto a\)
Removing the proportionality symbol introduces a proportionality constant in the equation
\(t = ka\)
So far we know that cost of 6 apples is $2.70
Putting in the equation
\(2.70 = k (6)\\k = \frac{2.70}{6}\\k = 0.45\)
Putting the values of k will give us:
\(t = 0.45a\)
Hence,
The correct answer is: 2. t=0.45a
Whoever helps me with this problem will have brainlist.
By definition of quotient, the rational number 1/3 represents a periodic infinite decimal number. That is to say, 1/3 is equivalent to the decimal number \(0.\overline{333}\)
How to find the quotient of a fraction
The quotient of a fraction is found by dividing the fraction. Results in decimal form can be finite and infinite, infinite forms can be periodic or no periodic. This fraction represents a periodic infinite decimal number.
\(\frac{1}{3} = 0.\overline{333}\)
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The expression of the fraction 1/3 as a quotient is; 0 remainder 3 or 0 r 3.
How to find the quotient of a fraction?
Quotient is described as the quantity produced by the division of two numbers.
Now, we want to find the quotient of 1/3. It should be noted that this quotient should not be in decimal form and so it gives us;
0 remainder 3 since 3 as a denominator is bigger than 1 as numerator.
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Find the length of the missing side
Area = 55cm²
9cm
X
5cm
Answer:
13 cm
Step-by-step explanation:
area = (1/2)(a + b)h
(1/2)(x + 9)(5) = 55
5x + 45 = 110
5x = 65
x = 13
a mathematics class consists of 32 engineering majors, 24 science majors, and 8 liberal arts majors. (enter your probabilities as fractions.)(a) what is the probability that a student selected at random will be a science or liberal arts major?
The probability that a student selected at random will be a science or liberal arts major is 1/2 or 0.5.
First, let's find the total number of students in the class:
32 engineering majors + 24 science majors + 8 liberal arts majors = 64 students.
Next, let's find the number of science or liberal arts majors:
24 science majors + 8 liberal arts majors = 32 students.
Now, we can calculate the probability of selecting a science or liberal arts major at random.
The probability is given by the formula:
Probability = (Number of favorable outcomes) / (Total number of outcomes).
In this case, the favorable outcomes are selecting a science or liberal arts major, which is 32 students.
The total number of outcomes is the total number of students, which is 64.
So, the probability is:
Probability = 32/64.
To simplify the fraction, we can divide both the numerator and the denominator by their greatest common divisor (32):
Probability = 32/32 ÷ 32/32 = 1/2.
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Suppose you borrowed $45,000 at a rate of 8.5% and must repay it in 5 equal installments at the end of each of the next 5 years. By how much would you reduce the amount you owe in the first year? Select the correct answer. a. $7,594.46 b. $7,600.46 c. $7,618.46 d. $7,612.46 e. $7,606.46
The correct answer is option a. $7,594.46.
To calculate the amount you would reduce the amount you owe in the first year, we can use the formula for the equal installment of a loan. The formula is:
Installment = Principal / Number of Installments + (Principal - Total Repaid) * Interest Rate
In this case, the principal is $45,000, the number of installments is 5, and the interest rate is 8.5%.
Let's calculate the amount you would reduce the amount you owe in the first year:
Installment = $45,000 / 5 + ($45,000 - $0) * 0.085Installment = $9,000 + $3,825
Installment = $12,825
Therefore, you would reduce the amount you owe by $12,825 in the first year.The correct answer is option a. $7,594.46.
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Workers are loading boxes onto a truck. So far, they have loaded 48 boxes onto the truck. According to their inventory, they still need to load 96% of the boxes on the truck. What is the total number of boxes the workers are loading on the truck?
The total number of boxes of inventory which is loading on the truck by the workers are 1,200 boxes.
What is percentage of a number?
Percentage of a number is the part of the number expressed in the in every hundred. Percentage of a number is expressed with the symbol '%'.
Workers are loading boxes onto a truck . So far, they have loaded 48 boxes onto the truck.
According to their inventory, they still need to load 96% of boxes on the truck. There must be 100% box at the start of the loading. Thus, the percentage of boxes they have load,
p=100-96 = 4%
Thus the percentage of boxes they have load in the truck is 4%. This is equal to the 48 boxes they have loaded.
Let suppose there is x number of total boxes. Thus the 4 percent of x will be equal to the 48.
(4/100)x=48
x = 4800/4 = 1200
Thus, the total number of boxes of inventory which is loading on the truck by the workers are 1,200 boxes.
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The following table shows the number of candy bars bought at a local grocery store and the
total cost of the candy bars:
Candy Bars 3
5
Total Cost $6.65
8
$10.45 $16.15
12
$23.75
15
$29.45
20
$38.95
25
$48.45
Based on the data in the table, find the slope of the linear model that represents the cost
of the candy per bar: m =
Answer:
The slope of a linear model can be calculated using the formula:
m = Δy / Δx
where:
Δy = change in y (the dependent variable, in this case, total cost)
Δx = change in x (the independent variable, in this case, number of candy bars)
This is essentially the "rise over run" concept from geometry, applied to data points on a graph.
In this case, we can take two points from the table (for instance, the first and last) and calculate the slope.
Let's take the first point (3 candy bars, $6.65) and the last point (25 candy bars, $48.45).
Δy = $48.45 - $6.65 = $41.8
Δx = 25 - 3 = 22
So the slope m would be:
m = Δy / Δx = $41.8 / 22 = $1.9 per candy bar
This suggests that the cost of each candy bar is $1.9 according to this linear model.
Please note that this assumes the relationship between the number of candy bars and the total cost is perfectly linear, which might not be the case in reality.
Which statements are true based on the diagram?
Check all that apply.
Answer: where is statements
Step-by-step explanation:
In the diagram, transversal t cuts parallel lines a and b. Which equation is necessarily true?
A. m<1 = m<7
B. m<3 = m<6
C. m<5+ m<8 = 90°
D. m<6 + m<7 = 180°
Answer:B: m<3 = m<6
Step-by-step explanation: PLATO
Answer:
Answer:B: m<3 = m<6
Step-by-step explanation:
When selecting from unbiased estimators, an estimator with small bias may be preferred over the minimum variance unbiased estimator when the variance of the estimator with bias is less than for the MVUE
yess it is true because of unbiased estimator
what is variance?
Variability is measured by the variance. The average of the squared deviations from the mean is used to calculate it. The degree of spread in your data set is indicated by variance. The variance is greater in respect to the mean when the data are more dispersed
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how to solve simplify rational expressions
Which graph shows the solution to y > 3x - 4 and y ≤ x + 1
Let's start graphing the first inequality y > 3x - 4. Since this is already in its slope-intercept form, we can see right away that the y-intercept of its boundary line is at (0, -4) and the slope is 3.
Aside from the y-intercept, let's find another point on the line using the slope. We will add 3 on the y-coordinate of the y-intercept and add 1 on the x-coordinate.
\(\begin{gathered} 0+1=1 \\ -4+3=-1 \end{gathered}\)Hence, we have another point on the boundary line at (1, -1).
Let's plot these two points (0, -4) and (1, -1) and connect them using a dashed line since the inequality is "greater than". Also, the shade of the graph will be above the line.
The graph of the first inequality y > 3x - 4 is:
Moving on to the second inequality y ≤ x + 1, the y-intercept is at (0, 1) and the slope is 1.
Let's find another point on the line using the slope by adding 1 on the y-coordinate of the y-intercept and 1 on the x-coordinate.
\(\begin{gathered} 0+1=1 \\ 1+1=2 \end{gathered}\)Therefore, we have another point on the line at (1, 2).
Let's plot these points (0, 1) and (1, 2) on the graph. Connect them using a solid line because the inequality symbol has "or equal to". The shade of the graph will be below the line since the inequality symbol is "less than".
The graph of the second inequality y ≤ x + 1 is:
Combining the two graphs, we have:
The solution to the two inequalities would be the common shaded region, hence, in the diagram, it will be the darker shade.
Based on the given choices, this is shown by Option D.
Jaylen and six of her younger siblings have ages that are consecutive. When they moved from San Francisco to Chicago, their ages (all seven of them) added up to 91. How old was Jaylen when they moved? Explain your thinking.
Answer:
Jaylen was 16 years old. She's the oldest.
Step-by-step explanation:
16 Jaylen
15 sibling 1
14 sibling 2
13 sibling 3
12 sibling 4
11 sibling 5
10 sibling 6
____________
91 Total
My thinking was that I started out dividing 91 by 7. That came out 13. So I knew the oldest one had to be older than 13.
PLEASE ANSWER IT QUICKLY
in the frog markov chain what is the
(a) If the current distribution is Ps all other Pa 0.2, then in the next period, all states will have the same probability of 0.2, because the frog has a 0.2 probability of moving to any state.
(b) If the current distribution is Pz 0.5, Ps 0.5 all other Pa 0.2, then in the next period, the probabilities of being in state z and state s will each be 0.5 * 0.5 = 0.25, and the probabilities of being in all other states will be 0.2.
(c) If the current distribution is Pz 0.225, Pa 0.25, Pa 0.5, all other P; 0.2, then in the next period, the probabilities of being in each state will be the sum of the products of the current probability of being in that state and the transition probabilities from that state.
(d) If the current distribution is P: Pz 0.22, Pa 0.22, Pa 0.22, Ps 0.22. P6 0.2, then in the next period, the probabilities of being in each state will be the same as in the current period, because the frog has an equal probability of moving to any state.
Note that in each case, the probabilities must add up to 1, as they represent the entire possible states of the frog.
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