Here are two steps from the derivation of the quadratic formula (image w question below)
Answers
Answer:
B. Completing the square
Step-by-step explanation:
Between the first and second steps shown, the square of half the x-term coefficient was added to both sides. That is a value that makes the polynomial on the left be a "perfect square trinomial."
The process of adding the value required to make the left side a perfect square is called "completing the square."
Related Questions
what will be the value stored in the variable x after the execution of the following code snippet? int a
Answers
The result of running the code is that x will be 20.
Therefore, your software is saying:
Place x at 30. (I'm assuming that you don't care about the case here because you wrote an X in capital letters that don't exist anywhere else;)
Place y at 20.
If y is not equal to x-10, ask. "If yes, put x to the value of x-5; if no, set x to the value of y," is the next step.
Your question receives the response "no," and x is then set to the value of y since the values of x and y you selected to result in y being equal to x-10. The result of running the code is that x will be 20.
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Full question
After execution of the following code, what will be the value of x? X = 30; y = 20; if (y ! = (x - 10)) x = x - 5; else x = y;
Let the random variable X be a random number with the uniform density curve in the figure below. Find the following probabilities. O P(X 2 0.35) O P(X = 0.35) O P(0.35 < X < 1.25) O P(0.10 < X < 0.20 or 0.6 < X < 0.9) O X is not in the interval 0.5 to 0.6.
Answers
A continuous random variable is one that has a range of possible values. In other words, if a random variable adopts a value that fits within a specific range, it is said to be continuous.
Measurements like height, weight, and time are all represented by continuous random variables. A continuous random variable is represented as the area under a density curve. The concept of a continuous random variable, as well as its mean, variance, types, and related examples
P(X < 0.35) = 0.35
P(X = 0.35) = 0 since X is a continuous random variable and the probability of a specific value is 0.
P(0.35 < X < 1.25) = 1.25 - 0.35 = 0.9
P(0.10 < X < 0.20 or 0.6 < X < 0.9) = (0.20 - 0.10) + (0.9 - 0.6) = 0.3
P(X < 0.5 or X > 0.6) = (0.5 - 0) + (1 - 0.6) = 0.9
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You roll a number cube and record an odd number 12 times in a row. As the number of times you roll an odd number increases, what happens to the theoretical probability that you roll an even number? (Please show step by step explanation)
Answers
When the number of times you roll an odd number increases, the theoretical probability that you roll an even number would decrease.
How is the probability of rolling an even number affected ?As the number of times you roll an odd number increases, the theoretical probability that you roll an even number decreases. This is because the probability of rolling an even number is inversely proportional to the number of times you roll an odd number.
If you are rolling a fair die, the probability of rolling an even number is 3/6 or 1/2, and the probability of rolling an odd number is also 3/6 or 1/2.
As the number of times you roll an odd number increases, the number of rolls that are left for an even number decreases, thus the probability of rolling an even number decreases as well.
For example, if you roll the die 10 times and 6 of them are odd numbers, the probability of rolling an even number in the remaining 4 rolls is 4/4 or 1 (100%) because you are guaranteed to roll an even number.
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There are 5 gallons of lemonade in the container. How much is remaining in the container after Coach Miller pours g gallons for the players?
Answers
The remaining lemonade in the container after Coach Miller pours g gallons for the players is, (5 - g) gallons.
What is mean by Subtraction?Subtraction in mathematics means that is taking something away from a group or number of objects. When you subtract, what is left in the group becomes less.
We have to given that;
There are 5 gallons of lemonade in the container.
Now, Initially lemonade available in Container = 5 gallons
Here, Coach Miller pours g gallons for the players.
Hence, Lemonade remaining in Container = (5 - g) gallons
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Selkirk Company obtained a $15,000 note receivable from a customer on January 1, 2021. The note, along with interest at 9%, is due on July 1, 2021. On February 28, 2021, Selkirk discounted the note at Unionville Bank. The bank’s discount rate is 12%.
Required:
Prepare the journal entries required on February 28, 2021, to accrue interest and to record the discounting for Selkirk. Assume that the discounting is accounted for as a sale.
Answers
A journal entry is a format used in accounting to record transactions. The amount we owe someone else that we must get in the future is known as notes receivable.
What is Notes receivable?Notes receivable are claims for which official documents of credit, like promissory notes, are issued as proof of debt. In most cases, the credit instrument has a minimum term of 30 days and imposes an interest payment obligation on the debtor.
Given the following information:
Note receivable $15,000
Rate of interest 9%
Discount rate 12%
Period 2 months
Preparing journal entry to record accrued interest
To prepare the journal entry, we must first calculate the interest. We can compute interest by multiplying the notes receivable, the interest rate, and the period, i.e.
Interest = Notes receivable × Rate of interest × Period
Interest = 15000 × 0.09 × 2/12
Interest = 225
Now we can prepare the journal entry
Date Particulars Debit ($) Credit($)
February 28, 2016 Interest receivable 250
Interest 250
To record accrued interest
Preparing the journal entry to record discounting
To begin preparing the Journal entry, we must first calculate the necessary data.
We can calculate the cash as the difference between Maturity Value and Discount. That is,
Cash = Maturity Value – Discount
The value of Maturity is unknown. We can compute it as the sum of the receivable notes and interest. That is,
Maturity Value = Notes receivable + Interest
Interest =Notes receivable × Rate of interest × Period
= $15,000 × 0.1 × 6/12
= $1,500 × 0.5
= $750
Maturity Value = Notes receivable + Interest
= $15,000 + $750
= $15,750
Discount =Maturity Value × Discount rate × Period
= $15,750 × 0.12 × 4/12
= $1,890 × 0.33
= $630
Finally, we can calculate cash
Cash = Maturity Value – Discount
= $15,750 − $630
= $15,120
Loss on sale = Cash – Notes receivable - Interest
= $15,120 − $15,000 − $250
= $130
Finally, we can prepare our journal entry.
Date Particulars Debit ($) Credit($)
February 28,2016 Cash 15,120
Loss on sale 130
Notes receivable 15,000
Interest 250
(To record discounting)
Thus, Cash & Loss are debited, & Notes Receivable & Interest are credited.
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How much more does the cat eat than the parrot? The Parrot eats 3/8 pounds of food, and the cat eats 7/8 pounds of food. Write and solve an equation to represent the problem?
Answers
The equation and solution of the problem are 3/8-7/8 and 1/2.
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
A mathematical equation is a statement with two equal sides and an equal sign in between. An equation is, for instance, 4 + 6 = 10. Both 4 + 6 and 10 can be seen on the left and right sides of the equal sign, respectively.
Given;
The food parrot eats = 3/8pounds
The food cat eats = 7/8pounds
Now, food eaten more by cat =7/8-3/8
=(7-3)/8
=4/8
=1/2
Therefore, the answer to equation will be 1/2.
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A basketball player's chance of scoring a free throw is estimated to be 25. The player tries 20 shots and the number of baskets is recorded. This event is a binomial experiment because
A. there are only two outcomes; the number of trials is not fixed; the probability is the same for each trial; the trails are independent of each other.
B. there are only two outcomes; the number of trials are fixed; the probability is not the same for each trial; the trails are independent of each other.
C. there are only two outcomes; the number of trials are fixed; the probability is the same for each trial; the trails are independent of each other.
D. there is only one outcome; the number of trials are fixed; the probability is not the same for each trial; the trails are independent of each other.
Answers
This event is a binomial experiment because C. there are only two outcomes; the number of trials is fixed; the probability is the same for each trial; the trials are independent of each other.
What is a binomial experiment?A binomial experiment is a random experiment with a fixed number of repeated trials with independent outcomes, successes or failures, yes or no, and heads or tails.
In a binomial experiment, the probability of "success" p is the same for each outcome as the chance of "failure" q is the same for each outcome.
The number of free throw shots in this experiment is 20 and they are either missed or scored.
Thus, the fixed number of trials with only two outcomes satisfied as a binomial experiment.
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4(6-b)=4
Use distributive property
Answers
Answer:
b is 5
I wish you luck in your assignments.
Percy has 50 flowers. He will put 8 flowers in
each centerpiece. How many centerpieces can
Percy make? How many flowers will be left over?
Answers
Answer:
6 and 2
Step-by-step explanation:
50 divided by 8 is 6.25 and since you can't make .25 of a centerpiece he can only make 6 centerpieces
there will be 2 flowers left over because .25 of 8 is 2 (.25 times 8)
Evaluate the function over the domain {-2, -1, 0, 1, 2}. As the values of the domain
4. 10^x
increase, do the values of the range increase or decrease?
Answers
The range of the function is {0.01, 0.1, 1, 10, 100}. With an increase in the value of the domain, the range of the function is increasing.
What is a function?
A function from a set X to a set Y allocates exactly one element of Y to each element of X. The set X is known as the function's domain, while the set Y is known as the function's codomain.
Given function is
f(x) = 10^x.
Given domain is {-2, -1, 0, 1, 2}.
Now putting x = -2, -1, 0, 1, 2 in the function f(x) = 10^x.
When x = -2:
f(-2) = 10^(-2)
f(-2) = 0.01.
When x = -1:
f(-1) = 10^(-1)
f(-1) = 0.1.
When x = 0:
f(0) = 10^(0)
f(0) = 1.
When x = 1:
f(1) = 10^(1)
f(1) = 10
When x = 2:
f(2) = 10^(2)
f(2) = 100
The range of the function is {0.01, 0.1, 10, 100}
The values of the range increase with the increase of domain.
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find a power series representation for f(x) = arccot(x).
Answers
The power series representation for f(x) = arccot(x) is
[tex]\pi /2- \lim_{n \to \infty} (-1)^n\frac{x^2^n^+^1}{2n+1}[/tex]
The power series ∑aₙxⁿ is an infinite series and looks like a function of x. An easy way to illustrate the idea of a power series representing a function is to use the geometric series as an example.
The power series is a very important kind of infinite series where the terms contain the powers of a variable. A power series is a series of the general form:
∑aₙ(x-x₀)ⁿ=a₀+a₁(x-x₀)+a₂(x-x₀)²+a₃(x-x₀)³+.........
called a power series centered at x₀
where x is a variable,
x₀ is a real constant, and the
aₙ's are real constants called the coefficients of the series.
The given power series representation is f(x) = arccot(x).
we observe that f '(x)=-1/(1+x²) and find the required series by integrating the power series for -1(1+x²)
arccot(x)=∫-1/(1+x²)dx
⇒∫-(1-x²+x⁴-x⁶+....)dx
⇒C-x+1/3x³-x⁵/5+1/7x⁷-......
To find C we put x=0 and obtain C=arccot(0)=π/2
Therefore,
C=π/2-x+1/3x³-x⁵/5+1/7x⁷-.......
f(x)=π/2- ∑(-1)ⁿₓ x^2n+1/2n+1
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It costs $4 per ride at an amusement park, plus a $10 fee to get in. Write an equation to represent the total cost (y) for any number of rides (x).
Answers
Correct answer because ever ride (x) will continue to multiply 4 and add the ten which is the default cost.
How to solve and the equation
Answers
Answer:19
Step-by-step explanation:
I think this is right
y=2/3x
The slope of the equation is 2/3
y=2/3x + b
Put in x=1 and y=0
-2/3=b
Final equation: y=2/3x - 2/3
what do you mean by quadratic polynomials ?
Answers
Step-by-step explanation:
it us a polynomial with a second degree variable
work out: 8^1/3/5^-2
Answers
The solution to the indices is 50.
What is an Indices?Index (indices) is the power or exponent which is raised to a number or a variable. The plural of index is indices. Indices contain constants and variables. The constant is a value which cannot be changed and a variable quantity can be assigned any number or its value can be changed.
Indices are a convenient tool in mathematics to correctly denote the process of taking a power or a root of a number. Taking a power is simply a case of repeated multiplication of a number with itself while taking a root is just equivalent to taking a fractional power of that same number.
8^1/3 / 5^-2
Applying the necessary laws of indices;
= 8^1/3 / 5^-2
= ∛8 / (1/5^2)
= 2 / (1/25)
= 2 x (25/1)
= 50
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nominal exchange rate
(or simply called exchange rate)
If the nominal exchange rate between the U.S. dollar and the Japanese yen is: 90 YEN per $ dollar.
So, 1$ can buy 90 YEN in the foreign exchange market.
Answers
The price of foreign currency in relation to the local currency is referred to as the Nominal Exchange rate. It displays how many units of local money must be renounced in order to obtain one unit of foreign cash.
The amount of local currency required to buy foreign currency is known as the nominal exchange rate. The NEER is a measure of a nation's ability to compete internationally in the foreign exchange (forex) market.
Yes, you can exchange 1 USD for 90 YEN on the foreign exchange market, and vice versa. Nominal currency appreciation is the term used to describe a decline in this measure.
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What is the Nominal Exchange Rate?
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For the following two numbers, find two factors of the first number such that their product is the first number and their sum is the second number.
40,13
Answers
The two factors such that their product is the first number and their sum is the second number are 8 and 5.
What is a factor?A factor is defined as the number that divides another number, leaving no remainder.
In other words, if multiplying two numbers gives us a product, then the number we multiply is a factor of the product and divided by the product.
The factors of 40 and 13 such that their product is the first number and their sum is the second number = 8 and 5.
That is, 8×5 = 40
8+5 = 13
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Consider the scale drawing of Balanced Rock in Arches National Park. What is the actual height of the structure? Round your answer to the nearest whole foot.
Answers
Based on the image provided, the actual height of the structure would be 1/975.36.
What is a scale?This refers to a picture or model that is made based on the proportion of an original structure. Most models are smaller than their original.
What is the scale factor in the image?According to the image, 1 centimeter represents 32 feet of the actual structure, which means there is a 1:32 scale factor, let's calculate then the number of centimeters in total to know the height:
1 foot = 30.48 cm
32 feet = x
x= 30.48 x 32/ 1 = 975.36 cm
Based on this the height can be expressed as 1/975.36.
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In this polygon, all angles are right
angles.
What is the area of this polygon?
Enter your answer in the box.
____ ft²
Answers
In this polygon, all angles are right angles. The area of this polygon = 334 ft²
What is the polygonal area formula?To calculate the area of a regular polygon, just apply the formula below: Half of a perimeter multiplied by apothem equals area. What it means is as follows: The perimeter is the sum of the lengths of all the sides. A segment known as an apothem joins the midpoint of any perpendicular side to the midpoint of a polygon.
The equation for the area of a regular polygon with n sides is [l2n]/[4tan(180/n)]. where n is the number of sides and l is the length of the sides of the polygon.
To calculate the area of a regular polygon, use the formula Area = (number of sides length of one side apothem)/2.
Given data :
Area of polygon
= Area AGEF + Area BCDG
= 21 x 7 + 17 x 11
= 147 + 187 = 334 ft²
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Answer:334 ft
Step-by-step explanation: i did the test
The nth term of a sequence is 60 - 8n.
Find the largest number in this sequence.
Answers
Answer:
The largest term is 52.---------------------------------
Given sequence:
t(n) = 60 - 8nThis is decreasing sequence since the common difference is negative, d = - 8.
Therefore the first term is the largest one:
t(1) = 60 - 8*1 = 60 - 8 = 52HELP ME OLEASE IM BEGGINF
Answers
The graph below shows the number of blocks away from home Bentley is 21 minutes after he left his house, until he got back home.
What is distance-timed graph?The distance-timed graph is the type of graph that is used to represent the relationship that exists between the distance covered by a moving object and the time take to reach its destination.
The distance covered from house to store= 4 blocks
The time used = 2 minutes
The distance covered from store to the bank = 10 blocks
The time used = 7 minutes
The time used to return home from the bank = 12 minutes
Therefore, Bentley is 21 minutes after he left his house, until he got back home. That is 2+7+12 = 21 minutes.
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please help, need asap. do 30, and 31....30 points!!!!!!!!!!!!!!!!!
Answers
The indicated measures:
m∠ABC = 138° and m∠BCD = 52°.
What is an angle addition postulate?According to the Angle Addition Postulate, an angle's measure is equal to the sum of the measures of any two adjacent angles. The Angle Addition Postulate can be used to determine the measurement of a missing angle or to determine the angle produced by two or more other angles.
Given:
The angle measures:
m∠DAE = 16° and m∠EDC = 64°.
The diagonals of the kite intersect at 90°.
(1).
In ΔAED,
the sum of all the angles of the triangle is 180°.
m∠DAE + m∠ADE + m∠AED = 180°
m∠ADE = 180 - 90 - 16
m∠ADE = 74°
According to the angle addition postulate,
m∠ADE + m∠EDC = m∠ADE
m∠ADE = (74 + 64)°
m∠ADE = 138°
From the property of kites,
m∠ADE = 138° = m∠ABC.
(2). m∠EBC = m∠EDC,
m∠EBC = 64°
In ΔBCD,
the sum of all the angles of the triangle is 180°.
m∠DBC + m∠BCD + m∠CDB = 180°
m∠BCD = 180 - 64 - 64
m∠BCD = 52°
Therefore, 138° = m∠ABC and m∠BCD = 52°.
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Can you please solve this problem.
Answers
Answer: 10y
Step-by-step explanation:
4(y-2)+6y+8
4(y-2)=4y-8
4y-8+6y-8
*8's cancel out*
6y+4y=10y
In a right triangle, given legs of lengths 5 and 12, find the length of the hypotenuse.
Answers
The length of the hypotenuse is 13 units
How to find the length of the hypotenuse.From the question, we have the following parameters that can be used in our computation:
Legs = 5 and 12 units
The length of the hypotenuse of the right triangle can then be calculated using
Hypotenuse² = Leg 1² + Leg 2²
Substitute the known values in the above equation, so, we have the following representation
Hypotenuse² = 5² + 12²
So, we have
Hypotenuse² = 169
Take the square roots
Hypotenuse = 13
Hence, the hypotenuse is 13 units
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A coordinate plane. The x- and y-axes each scale by one. A graph of a line intersects the points one, negative three, and three, zero. What is the slope of the line?
Answers
The slope of a given line is m=1.5.
What is slope of a line?The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.
The formula to find the slope of a line is slope = (y₂-y₁)/(x₂-x₁).
The coordinate points of a line are (1, -3) and (3, 0).
Substitute, (x₁, y₁) and (x₂, y₂) in m=(y₂-y₁)/(x₂-x₁), we get
m= (0+3)/(3-1)
= 3/2
= 1.5
Therefore, the slope of a given line is m=1.5.
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simplify expression 8y^2+9y^2+6y
Answers
Answer
17y^2 + 6y
Step-by-step explanation:
18.
A button is circular, as shown. The
button has a diameter of 6.4
centimeters What is the area of the
button in square centimeters?
Answers
The area of the circle with diameter 6.4 is 32.15 square centimeters.
What is area of the circle?A circle closed plane geometric shape. In technical terms, a circle is a locus of a point moving around a fixed point at a fixed distance away from the point.
Area of a circle is the region occupied by the circle in a two-dimensional plane. It can be determined easily using a formula:
[tex]A = \pi r^2[/tex]
Given that the diameter of the circle is 6.4 centimeters.
The radius of the circle is thus half of the diameter that is 3.2 centimeters.
The area of the circle is given by the formula:
[tex]A = \pi r^2[/tex]
Substitute the value of r = 3.2 in the formula:
[tex]A = (3.14) (3.2)^2\\\\A = 32.15[/tex]
The area of the circle is 32.15 square centimeters.
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Transversal Geometry
find the value of x
Answers
Answer:
x = 67°
Step-by-step explanation:
When two parallel lines are cut by a transversal, the pair of angles formed on the interior of the parallel lines but on the opposite sides of the transversal are called alternate interior angles and they are congruent.
x = 67°
DUE SOON! PLEASE HELP! QUESTION DOWN BELOW!
Answers
Answer:
a)not quadratic
b)quadratic
c)quadratic
d)not quadratic
a) x=-3
b) maximum is (-3,4)
c)[tex](-3-\sqrt{2},0)[/tex] and[tex](-3+\sqrt{2},0)[/tex]
d)(0,-14)
e) Domain: (-∞,∞), {xIx∈ℝ}
Range: (-∞,4), {yIy≤4}
Step-by-step explanation:
Hope this helps!
2. you could use an app
it will help you and even show you steps let me know if you need the other answers
X^2+2xy-2y^2+x=2 find gradient at point (-4,1)
Answers
Therefore , the solution to the given problem of slope intercept comes out to be dy/dx = -1/2.
A slope-intercept form is precisely what?After you are certain if Y = mx + b, the gradient intercept approach can be employed. By using just one particular point on the line and its slope, the direction form is a way to represent an axiom for a line. The slope is defined as such rise across run and is represented first by point form (x,y), and may be calculated using the slope intercept method, y = mx + b. (0, b). By using just one specific statement on the vector and its slope, the direction form is a technique to write a linear model for a line.
Here,
Given : x² +2xy - 2y² +x =2
thus,
To find the gradient at point (-4,1) :
We have to find the dy/dx
so,
=> 2x + 2y + 2xdy/dx -2ydy/dx +1 =0
=> dy/dx (2x-2y) = -(2x+ 2y) -1
=>dy/dx = -(2x+2y) -1 / (2x-2y)
So , at the point (-4,1)
=> dy/dx = -(-8 + 2) -1 / (-8 -2)
=>dy/dx = 5/-10
=>dy/dx = -1/2
Therefore , the solution to the given problem of slope intercept comes out to be dy/dx = -1/2.
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