Answer:
The value of A is 4.
Step-by-step explanation:
Consider the provided quadratic equation.
[tex]4x^2-20x+3=0[/tex]
Subtract 3 from both sides.
[tex]4x^2-20x+3-3=-3[/tex]
[tex]4x^2-20x=-3[/tex]
Now take 4 common from the left side of the above equation.
[tex]4(x^2-5x)=-3[/tex]
Compare the above equation with [tex]A(x^2 - 5x) = -3[/tex]
By the comparison it is clear the value of A is 4.
Hence, the value of A is 4.
Angles of the elevation and depression: Find the value of x. Round to the nearest tenth.
Triangle abc has been translated to create triangle a'b'c'. angles c and c' are both 32 degrees, angles b and b' are both 72 degrees, and sides bc and b'c' are both 5 units long. which postulate below would prove the two triangles are congruent? sss sas asa hl
ASA
Is the answer i got on my work
What number is 8.2% of 50?
8.2% = 0.082
50 * 0.082 = 4.1
the answer is 4.1
The equations of two lines are x - 3y = 6 and y = 3x + 2. determine if the lines are parallel, perpendicular or neither.parallelperpendicularneither
Sarah competes in a long jump competition Her first jump is 4.25m Her best jump is 12% more than this However, her best jump is 15% lower than the winning jump Work out the length Of The winning jump
>First jump = 4.25 m
>Best jump = 1.12 * First jump
Best jump = 1.12 * (4.25 m)
Best jump = 4.76 m
>Best jump = 0.85 * Winning jump
Hence,
Winning jump = Best jump / 0.85
Winning jump = 4.76 m / 0.85
Winning jump = 5.6 m
Carlos's gas tank is 19 full. after he buys 6 gallons of gas, it is 13 full. how many gallons can carlos's tank hold
Answer:
25
Step-by-step explanation:
I if 700 tickets were sold for a concert and only 587 people attended, how many people bought a ticket but Did not attend
Final answer:
There were 113 people who bought a ticket but did not show up to the concert, calculated by subtracting the number of attendees (587) from the total tickets sold (700).
Explanation:
To determine how many people bought a ticket but did not attend the concert, you would subtract the number of people who attended from the total number of tickets sold. In this case, 700 tickets were sold and only 587 people attended. So, the calculation would be:
700 tickets sold - 587 attendees = 113 people who did not attend
Thus, 113 people bought a ticket but did not show up to the concert.
The vertex form of the equation of a parabola is x=8(y-1)^2-15. What is the standard form of the equation?
The standard form of the equation is:
[tex]x=8y^2-16y-7[/tex]
Step-by-step explanation:We know that the standard form of a quadratic equation is given by the expression:
[tex]x=ay^2+by+c[/tex]
where a,b and c are real numbers.
and a≠0
Here we are given the vertex form of the equation of a parabola by:
[tex]x=8(y-1)^2-15[/tex]
Now, on expanding the parentheses term by using the formula:
[tex](a-b)^2=a^2+b^2-2ab[/tex]
Here a=y and b= 1
Hence, we have:
[tex]x=8(y^2+1-2y)-15\\\\i.e.\\\\x=8\times y^2+8\times 1-2y\times 8-15\\\\i.e.\\\\x=8y^2+8-16y-15\\\\i.e.\\\\x=8y^2-16y+8-15[/tex]
( Since, in the last step we combined the constant term i.e. 8 and -15 )
Hence, we get the standard form of the equation as:
[tex]x=8y^2-16y-7[/tex]
Pablo's gas tank is 3/10 full. after he buys 10 gallons of gas, it is 4/5 full. how many gallons can pablo's tank hold?
The ideal circumference of a woman's basketball is 28.75 in. The actual circumference may vary from the ideal by at most 0.25 in. What are the acceptable circumferences for a woman's basketball? Let the variable c represent circumference.
The acceptable circumferences for a woman's basketball range from 28.5 inches to 29 inches.
Explanation:To find the acceptable circumferences for a woman's basketball, we need to consider the ideal circumference and the allowable variation. The ideal circumference is 28.75 inches and the actual circumference can vary by at most 0.25 inches. So, the acceptable circumferences can be found by adding and subtracting the maximum allowable variation from the ideal circumference:
Acceptable circumference = 28.75 ± 0.25 inches
This means the acceptable circumferences for a woman's basketball range from 28.5 inches to 29 inches.
You are on the way to the ski slopes to spend the week. the mountains are 678 miles from your home. if you drive 75 miles an hour and take six 15-minute rest breaks, how much time will you need to make the trip? round your answer to the nearest tenth.
how to solve a complex number
Complex numbers are "binomials" of a sort, and are added, subtracted, and multiplied in a similar way. (Division, which is further down the page, is a bit different.) First, though, you'll probably be asked to demonstrate that you understand the definition of complex numbers.
Solve 3 – 4i = x + yiFinding the answer to this involves nothing more than knowing that two complex numbers can be equal only if their real and imaginary parts are equal. In other words, 3 = x and –4 = y.To simplify complex-valued expressions, you combine "like" terms and apply the various other methods you learned for working with polynomials.
Simplify (2 + 3i) + (1 – 6i).(2 + 3i) + (1 – 6i) = (2 + 1) + (3i – 6i) = 3 + (–3i) = 3 – 3i
Simplify (5 – 2i) – (–4 – i).(5 – 2i) – (–4 – i)= (5 – 2i) – 1(–4 – i) = 5 – 2i – 1(–4) – 1(–i)= 5 – 2i + 4 + i= (5 + 4) + (–2i + i)= (9) + (–1i) = 9 – iYou may find it helpful to insert the "1" in front of the second set of parentheses (highlighted in red above) so you can better keep track of the "minus" being multiplied through the parentheses.
Simplify (2 – i)(3 + 4i).(2 – i)(3 + 4i) = (2)(3) + (2)(4i) + (–i)(3) + (–i)(4i)= 6 + 8i – 3i – 4i2 = 6 + 5i – 4(–1)= 6 + 5i + 4 = 10 + 5iFinal answer:
To solve a complex number, understand it as a sum of a real number and an imaginary number and use operations like conjugation. For division, multiply by the conjugate to simplify. Complex numbers ensure all polynomial equations have solutions.
Explanation:
To solve a complex number, one must understand that a complex number z is the sum of a real number and an imaginary number, which is written as z = a + ib. The terms a and b represent the real and imaginary parts respectively, often notated as Re(z) and Im(z).
To divide by a complex number, you multiply the numerator and the denominator by the conjugate of the denominator, simplifying to a form without imaginary numbers in the denominator. This can be expressed as z/z' = (aa' + bb')/(a'² +b'²) + i(ba' - ab')/(a'² + b'²). The conjugate of a complex number z is written as z* or z*.
Complex numbers are crucial in solving polynomial equations as they ensure that every polynomial equation has a solution. This is shown by the Fundamental Theorem of Algebra, which states that every non-constant single-variable polynomial with complex coefficients has at least one complex root. For instance, the equation x² - 2x + 5 = 0 has no real solutions but two complex solutions, x = 1±2i.
When two angles are complementary what is the sum of their measures is 90 degrees. two complementary angles have the measure of 2x-10 degrees and 3x-10 degrees?
Rounded to the nearest thousandth, what is the decimal equivalent of 6 7/9%?
Final answer:
To convert 6 7/9% to a decimal, we change the mixed number to an improper fraction, divide by 100 and round to the nearest thousandth, resulting in approximately 0.068.
Explanation:
To find the decimal equivalent of 6 7/9%, we must first convert the mixed number to an improper fraction and then to a decimal. To convert 6 7/9% to an improper fraction, we multiply the whole number 6 by the denominator 9 and add the numerator 7 to get 7 + (6 × 9) = 7 + 54 = 61. Then we place 61 over the original denominator to obtain 61/9. The percentage sign indicates that we are dealing with a part out of 100, so we must divide 61/9 by 100 or, equivalently, multiply by 1/100.
Therefore, the calculation to convert the percentage to a decimal is: (61/9) × (1/100) = 61/900. Using a calculator, or performing the division manually, gives us approximately 0.0677777....
Finally, to round this to the nearest thousandth, we would look at the fourth decimal place (which is 7 in this case). Since 7 is greater than 5, we round up the third decimal place, resulting in 0.068.
BRAINLIEST!!!
Gary earns $12 an hour plus $16 an hour for every hour of overtime. Overtime hours are any hours more than 30 hours for the week.
Part A: Create an equation that shows the amount of money earned, M, for working x hours in a week when there is no overtime. (3 points)
Part B: Create an equation that shows the amount of wages earned, T, for working y hours of overtime. Hint: Remember to include in the equation the amount earned from working 30 hours. (3 points)
Part C: Gary earned $408 in 1 week. How many hours (regular plus overtime) did he work? Show your work. (4 points)
Regina took out a 30-year loan for $190,000 at 4.5% interest, compounded monthly. If her monthly payment on the loan is $962.70, and if $712.50 of her first payment went toward interest, how much of her second payment went toward interest?
A.$962.70
B.$712.50
C.Less than $712.50
D.More than $712.50 but less than $962.70
please please please help
Answer:
C.Less than $712.50
Step-by-step explanation:
Given details are :
Loan amount = $190,000
Rate = 4.5% or 0.045 compounded monthly.
Time = [tex]30\times12=360[/tex] months
Monthly payments are = $962.70
First month interest = $712.50
I have calculated this using excel sheet and the answer is - C.Less than $712.50 .
Please find attached the excel sheet to see the working. You can see the highlighted interest that is less than first month interest.
Answer:Less than $712.50
Step-by-step explanation:
Compare rational numbers what is bigger 4.9 vs 4.6
I got it wrong !!! Please help and explain
25 * 2.5 = 62.5 *2 = 125
8x5 = 40
125 +40 = 165 square feet
What is the standard form of y=3/8x-4
Final answer:
The standard form of the equation y = (3/8)x - 4 is 8y - 3x = -32.
Explanation:
The standard form of the equation y = (3/8)x - 4 is written as 8y - 3x = -32.
To convert a linear equation from slope-intercept form (y = mx + b) to standard form (Ax + By = C), you need to multiply the entire equation by the common denominator of the coefficients.
In this case, the common denominator is 8, so multiplying both sides of the equation by 8 gives us 8y = 3x - 32. Moving all the terms to one side, we have 8y - 3x = -32, which is the standard form of the equation.
To transform the equation y = 3/8x - 4 into standard form, subtract 3/8x from both sides and then multiply through by 8 to eliminate the fraction, resulting in -3x + 8y = -32.
Explanation:The standard form of a linear equation is typically written as Ax + By = C, where A, B, and C are integers and A should not be negative. To convert the equation y = 3/8x - 4 to standard form, you need to manipulate the equation so that it fits the standard form criteria.
Step-by-step, we start by moving the x-term to the left side of the equation:
Subtract 3/8x from both sides: -3/8x + y = -4.Multiply through by 8 to eliminate the fraction: -3x + 8y = -32.Normally, we would want A to be positive, but since 3 is already negative, we can leave the equation as is.Therefore, the standard form of the given equation is -3x + 8y = -32.
The solutions to the inequality y<-x+1 are shaded on the graph. Which point is a solution?
Answer:
the answer is B
Step-by-step explanation:
Ice-Cream Palace has received an order for 3 1⁄2 gallons of ice-cream. The shop packages its ice-cream in 1-quart containers. How many containers will the shop need for this order?
Kate has 21 coins (nickels and dimes) in her purse. How many nickels and dimes does she have if she has $1.50? 3 nickels and 18 dimes 5 nickels and 16 dimes 12 nickels and 9 dimes 15 nickels and 6 dimes
Find the unit rate with the second given unit in the denominator.
72 football cards on 12 pages
A.
B.
C.
D.
I need help in math will give Brainliest
Evan’s family drove to a theme park for vacation. Assume they drove the same speed throughout the trip. The first day, they drove 300 miles in 6 hours. The second day, they drove 250 miles in 5 hours. The third day, they arrived at the park by driving ________ miles in 3 hours. Which number correctly fills in the blank?
300/6 = 50 mph
250/5 =50mph
so they drove 50 miles per hour
so 50 *3 = 150 miles in 3 hours
Why does the square root of 64 have a positive and negative value?
Determine algebraically whether the function is even, odd, or neither even nor odd.
f(x) = -4x3 + 4x
Select one:
a. Neither
b. Even
c. Odd
MATH HELP!!!!!!!!!!!!!
A segment with endpoints X Left parenthesis negative 6 comma 2 right parenthesis and Y Left parenthesis negative 1 comma negative 3 right parenthesis is rotated 90º about the origin. What are the coordinates of X Prime and Y Prime?
A. X prime Left parenthesis negative 1 comma negative 3 right parenthesis and Y prime Left parenthesis negative 6 comma 2 right parenthesis.
B. X prime Left parenthesis 2 comma 6 right parenthesis and Y prime Left parenthesis negative 3 comma 1 right parenthesis.
C. X prime Left parenthesis negative 2 comma negative 6 right parenthesis and Y prime Left parenthesis 3 comma negative 1 right parenthesis
D. X prime Left parenthesis 6 comma negative 2 right parenthesis and Y prime Left parenthesis 1 comma 3 right parenthesis
Answer:
The correct answer is C.
Step-by-step explanation:
This can be done using complex numbers and its relations with plane geometry. The endpoints of the segment are X(-6,2) and Y(-1,-3). These points can be seen as complex numbers, just recall the geometric interpretation of complex numbers.
So, the complex counterpart of [tex]X(-6,2) is x=-6+2i[/tex], and the complex counterpart of [tex]Y(-1,-3) = -1-3i[/tex]. Moreover, a rotation about the origin has an interpretation as multiplication by a complex number of modulus 1. In this particular case, a rotation of 90 degrees is equivalent to multiply by the complex unit: [tex]i=\sqrt{-1}[/tex].
Then,
[tex] x' = (-6+2i)\times i = -2-6i[/tex] which gives the point [tex]X'(-2,-6)[/tex]
[tex] x' = (-1-3i)\times i = 3-1i[/tex] which gives the point [tex]Y'(2,-1)[/tex].
The other option is to use a software to make geometrical constructions as Geogebra. Bellow there is an image attached made with Geogebra with the solution of the exercise.
Solve -3x^2-4x-4=0. Use the quadratic formula.
Answer:
[tex]x1=\frac{-2(+)2i\sqrt{2}} {3}[/tex]
[tex]x2=\frac{-2(-)2i\sqrt{2}} {3}[/tex]
Step-by-step explanation:
we have
[tex]-3x^{2} -4x-4=0[/tex]
Rewrite (Multiply by [tex]-1[/tex] both sides)
[tex]3x^{2}+4x+4=0[/tex]
The formula to solve a quadratic equation of the form [tex]ax^{2} +bx+c=0[/tex] is equal to
[tex]x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}[/tex]
in this problem we have
[tex]3x^{2}+4x+4=0[/tex]
so
[tex]a=3\\b=4\\c=4[/tex]
substitute
[tex]x=\frac{-4(+/-)\sqrt{4^{2}-4(3)(4)}} {2(3)}[/tex]
[tex]x=\frac{-4(+/-)\sqrt{-32}} {6}[/tex]
remember that
[tex]i=\sqrt{-1}[/tex]
[tex]x=\frac{-4(+/-)4i\sqrt{2}} {6}[/tex]
Simplify
[tex]x=\frac{-2(+/-)2i\sqrt{2}} {3}[/tex]
[tex]x1=\frac{-2(+)2i\sqrt{2}} {3}[/tex]
[tex]x2=\frac{-2(-)2i\sqrt{2}} {3}[/tex]