Answer:
Step-by-step explanation:
(1, 2), (3, 10)
(10 - 2)/(3 - 1) = 8/2 = 4
m = 4
-2x2 + 8x = 10 using the Quadratic Formula. Simplify if possible.
The required solutions are x = 2-i and x = 2+i to the given quadratic function.
What is a quadratic function?
The quadratic function is defined as a function containing the highest power of a variable is two.
We have been given that quadratic function as
-2x² + 8x - 10 = 0
Compare the given function to the standard quadratic function f(x) = ax² + b x + c.
We get a = -2, b = 8 and c = -10
Using the quadratic formula to solve the above quadratic function
[tex]x = \dfrac{-b\pm\sqrt{b^2-4ac}}{2a}[/tex]
[tex]x=\dfrac{-8\pm \sqrt{8^2-4\left(-2\right)\left(-10\right)}}{2\left(-2\right)}[/tex]
[tex]x=\dfrac{-8\pm \:4i}{2\left(-2\right)}[/tex]
[tex]x=\dfrac{-8+4i}{2\left(-2\right)},\:x=\dfrac{-8-4i}{2\left(-2\right)}[/tex]
x = 2-i, x = 2+i
Thus, the required solutions are x = 2-i and x = 2+i to the given quadratic function.
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help meeeeeeeeeeeeeeeeeeeeeeeeeee pleaseeeeeeeeeeeeeeeeeeeeee!!!!!
Answer:
a) 23.1 million
b) year 2013
Step-by-step explanation:
Given a population in millions is modeled by A = 23.1e^(0.0152t) for t years after 2000, you want to know the population in year 2000, and the year in which the population is 28.3 million.
a) Initial populationWhen t=0, the exponential factor is 1. The population is given by the coefficient of that factor: 23.1
The population in 2000 was 23.1 millions.
b) Year of 28.3MWe can solve for t to find the year the population is 28.3 million:
28.3 = 23.1e^(0.0152t)
28.3/23.1 = e^(0.0152t) . . . . .divide by 23.1
ln(28.3/23.1) = 0.0152t . . . . . take natural logs
t ≈ 13.36
The population will reach 28.3 million in the year 2013.
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Find the area of the triangle below. Be sure to include the correct unit in your answer. 8 cm 9 cm 18 cm
Answer:
648
Step-by-step explanation:
An easy way to do this is to multiply all sides, then divide by 2.
8 × 9 × 18 = 1296
Now divide that by 2:
1296 ÷ 2 = 648
The area of the triangle is 648.
Solve the system by substitution. { − 4 . 5 x − 2 y = − 12 . 5 3 . 25 x − y = − 0 . 75
An equation is a mathematical statement that is made up of two expressions connected by an equal sign.
The value of x is 1.
The value of y is 4.
What is an equation?An equation is a mathematical statement that is made up of two expressions connected by an equal sign.
Example:
2x + 4 - 9 = 5 is an equation.
We have,
-4.5x - 2y = -12.5 ____(1)
3.25x - y = -0.75 _____(2)
From (1) we get,
-4.5x + 12.5 = 2y
y = (-4.5x + 12.5) / 2 _____(3)
Now,
3.25x - y = -0.75
Putting (3) in (2) we get,
3.25x - (-4.5x + 12.5) / 2 = -0.75
6.5x + 4.5x - 12.5 = 2 x -0.75
11x - 12.5 = -1.5
11x = -1.5 + 12.5
11x = 11
x = 1
Now,
From (3) we get,
y = (-4.5x + 12.5) / 2
y = (-4.5 x 1 + 12.5) / 2
y = (-4.5 + 12.5) / 2
y = 8/2
y = 4
Thus,
The value of x is 1.
The value of y is 4.
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Paige can sort her toys in 6 fewer hours that Madison can. When they work together, it
takes them only 4 hours to sort the toys. How long would it take for each of them to sort
the toys alone?
Let X be the number of hours it takes Paige to sort the toys alone.
It takes Madison X + 6 hours to sort the toys alone.
Together, it takes them X + (X + 6) = 4 hours to sort the toys.
Combining like terms, we get 2X = 4
Dividing both sides by 2, we get X = 2
Therefore, it takes Paige 2 hours to sort the toys alone.
It takes Madison 2 + 6 = 8 hours to sort the toys alone.
Quetion The cot c (in dollar) for the fuel and maintenance of a go-cart i given by c=15x1000, where x i the number of ride. It cot $20 per ride. How many ride doe it take to break even?
200 rides does it take to break even.
What are the many sorts of cost?
Fixed and variable costs are the two main categories of expenses incurred by enterprises. While variable costs fluctuate with output, fixed costs do not.
Sometimes, fixed costs are referred to as overhead costs. They must be paid whether a company produces 100 or 1,000 widgets.
The cost function is given by
C(x ) = 15x + 1000
It is also given that it costs $25 per ride.
so,
Revenue function for x number of rides be
R(x) = 20x
For break even:-
The cost must be equal to the Revenue i.,e
C(x) = R(x)
15x + 1000 = 20x
1000 = 20x - 15x
1000 = 5x
x = 1000/5
x = 200
Therefore, 200 rides does it take to break even.
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a paddle wheel on a boat is 4 feet in diameter. the fins along the outer edge travel at a speed of 1.3 feet per second. how long does it take the paddle wheel to complete 100 full revolutions ? round to the nearest second.
_ minutes and _ seconds.
Answer: To find out how long it takes the paddle wheel to complete 100 full revolutions, we need to calculate the circumference of the paddle wheel and divide that by the speed at which the fins along the outer edge are traveling.
The formula for the circumference of a circle is:
C = 2πr
where C is the circumference and r is the radius of the circle.
The radius of the paddle wheel is 2 feet (the diameter of 4 feet divided by 2), so the circumference is:
C = 2π * 2 = 8π feet
To find out how long it takes the paddle wheel to complete 100 full revolutions, we divide the number of feet traveled in one revolution (the circumference of 8π feet) by the speed at which the fins are traveling (1.3 feet per second):
100 * 8π feet / 1.3 feet per second = 615.38 seconds
Rounded to the nearest second, it takes approximately 615 seconds for the paddle wheel to complete 100 full revolutions.
Find the three consecutive integers such that the smallest and three times the largest is 330. What is the smallest integer?
The smallest integer out of the three integers is 109
What is a number system?A numeral system is a writing system for expressing numbers; that is, a mathematical notation for representing numbers of a given set in a consistent manner using digits or other symbols. In different numeral systems, the same sequence of symbols can represent different numbers.
A zero, a positive natural number, or a negative integer with a minus sign is an integer. The negative numbers are the additive inverses of their positive counterparts.
Three consecutive integers:
x, x+1, x+2
The sum of the integers,
x+(x+1)+(x+2) = 330
3x + 3 = 330
3x= 327
x= 327/3
x= 109
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For the conditional write the converse , inverse , and contrapositive: Walking in front of a moving car is dangerous to your health .
The converse of the conditional statement is “If dangerous to your health then walking in front of a moving car”.
The inverse of the conditional statement is “If not dangerous to your health then not walking in front of a moving car”.
The contrapositive of the conditional statement is “if not walking in front of a moving car then not dangerous to your health."
What is the conditional statement?The conditional statement is defined as the two fundamental components that make up a conditional statement Hypothesis (if) and Conclusion (then).
The given conditional statement is "walking in front of a moving car is dangerous to your health."
The converse of the conditional statement is “If dangerous to your health then walking in front of a moving car”.
The inverse of the conditional statement is “If not dangerous to your health then not walking in front of a moving car”.
The contrapositive of the conditional statement is “if not walking in front of a moving car then not dangerous to your health."
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Sam purchased a 30$ bus pass. Each time they ride the bus, $2.25 is deducted. Write an equation to show the amount of money left on the bus pass after x rides.
Answer:
-2.25x = 30
Step-by-step explanation:
I hope this helps!
50 POINTS PLEASE HELP QUICK
Which expression is equivalent to 2 and three tenths raised to the fourth power divided by nine tenths raised to the fifth power, all raised to the fourth power?
A: 2 and three tenths raised to the eighth power divided by nine tenths raised to the ninth power
B: 2 and three tenths raised to the sixteenth power divided by nine tenths raised to the twentieth power
C: 1.4 raised to the forth power
D: 1.4 raised to the ninth power
Answer:
The answer is B
Step-by-step explanation:
I took the test and got it right,(also i have a pic) brainiest pls!!
Question
A square based pyramid has a height of 6 feet and the edge length of the base is 2 feet. A second square based pyramid is 2 feet taller and the edge length of the base is 0.5 feet greater than the first pyramid. How much greater is the volume of the second pyramid than the volume of the first pyramid? Round your answer to the nearest hundredth.
please help
A pyramid is a solid shape with a specified shaped base. The required answer is 8.67 cubic feet.
A pyramid is a solid shape with a specified shaped base. While a square based pyramid is a type of pyramid which has its base to be a square.
Volume of a square based pyramid = [tex]\frac{1}{3}[/tex] x base area x height
Also, are of a square = length x length
So that,
i. For the first pyramid;
volume = [tex]\frac{1}{3}[/tex] x (2 x 2) x 6
= 8 cubic feet
The volume of the first pyramid is 8 cubic feet.
ii. For the second pyramid, we have;
height = 8 feet
base side = 2.5 feet
So that.
Volume = [tex]\frac{1}{3}[/tex] x (2.5 x 2.5) x 8
= 16.6667
Volume = 16.67 cubic meters
The volume of the second pyramid is 16.67 cubic meters.
Therefore, the volume of the second pyramid is greater than the volume of the first pyramid by;
volume of the second pyramid - volume of the first pyramid = 16.67 - 8.0
= 8.67 cubic feet
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What is the slope of the line that passes through the points (10, 3)(10,3) and (7, 0)(7,0)? write your answer in simplest form.
The slope of the line that passes through the points (10, 3)(10,3) and (7, 0)(7,0)= 1.
What is slope?A line's steepness and direction are measured by the line's slope.
Without actually using a compass, determining the slope of lines in a coordinate plane can assist in forecasting whether the lines are parallel, perpendicular, or none at all.
Any two different points on a line can be used to calculate the slope of any line.
A line's slope is determined by how its y coordinate changes in relation to how its x coordinate changes. y and x are the net changes in the y and x coordinates, respectively.
Two locations located on a straight line can be used to determine a line's slope. We can use the slope of line formula if we know the two spots' coordinates. These two points' coordinates should be-
P1 = (x1, y1) and P2 = (x2, y2)
According to our question-
The slope m using the slope formula
m = y2-y1/x2-x1
with (x₁, y₁ ) = (10, 3 ) and (x₂, y₂ ) = (7, 0 )
-3/-3 = 1
Hence, the slope is = 1.
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What is the location of point G, which partitions the directed line segment from D to F into a 5:4 ratio? –1 0 2 3
The location of G is (3, 0).
Given question in that we have a number line.
A number line goes from negative 5 to positive 10.
Point D is at negative 2 and point F is at positive 7.
A line is drawn from point D to point F.
So we can write coordinate of point D as (-2,0) and point F as (7,0).
line segment from D to F divides as point G as in ratio of 5:4
Consider two points P(x1, y1) and Q(x2, y2). We have to find the coordinates of the point R which divides PQ in the ratio m : n
x = [tex]m*x2+n*x1/(m + n)[/tex]
[tex]y = m*y2+n*y1/(m + n)[/tex]
so here in our question m =5 n=4
x1=-2 x2=7 y1=0 y2=0
x = 5*7+4*(-2)/9
x = 3
y = 5*0+4*0/9 = 0
So the location of G is (3, 0)
Given Question is incomplete complete question here.
What is the location of point G, which partitions the directed line segment from D to F into a 5:4 ratio? A number line goes from negative 5 to positive 10. Point D is at negative 2 and point F is at positive 7. A line is drawn from point D to point F.
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x-½y=0 ½x- 0 ½z=-1 3x-y -z =-2
Lamont works for a company that pays him $20 per hour, but $50 each week is deducted from his pay for insurance. let p(h) represent Lamont's pay in one week after deductions for working h hours. The function
p
(
h
)
=
20
h
−
50
p(h)=20h−50 is used to calculate Lamon's weekly pay after the insurance deduction. What is the independent variable?
The independent variable in the given function is h.
What are Independent and dependent variables?The Independent variables are those variable whose value does not depend on any other variable. And it causes the change in other variables.
The dependent variable is those variables whose value is not independent and change in this variable is dependent on the change of the independent variable.
Given the function p(h)=20h−50, which represents Lamont works for a company that pays him $20 per hour(h), but $50 each week is deducted from his pay for insurance.
Now, in the given function since the amount that Lamont will get depends upon the number of hours for which he is working.
Therefore, the h is the independent variable and p is the dependent variable.
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You currently have $40 saved up. You get $5 every
time you shovel the driveway. Your friend has no
money saved up and gets $10 every time she
shovels her driveway (hers is twice as big as
yours!) After how many driveways will you have
the same amount of money as your friend?
A marching band director needs to divide 44 members into two groups. He wants the ratio of band members in group 1 to band members in group 2 to be 1 to 3. How many band members will be in group 2?.
If the ratio of band members in group 1 to band members in group 2 is 1 to 3, then for every 3 band members in group 2, there will be 1 band member in group 1.Therefore, group 2 will have 11 band members.
What is ratio and proportion?Comparing two numbers or quantities results in a ratio. Usually, it is expressed in the form "a:b" or "a/b," with a and b standing for the two quantities under comparison. Contrarily, a percentage is an equation that states that two ratios are equal. Alternatively said, a proportion is a claim that one ratio is equal to another.
For example, if the ratio of apples to oranges in a basket is 2:3, this implies that there are three oranges per each two apples. We may alternatively state that the ratio of apples to total number of fruits in the basket is 2:5, because 2 + 3 = 5. The two ratios (2:3 and 2:5) are proportionate in this instance. Also, ratio of band members in group 1 to band members in group 2 to be 1 to 3
How to solve?
If the director wants to divide 44 band members into two groups, with this ratio, then the number of band members in group 2 will be 44 / (1 + 3) = 44 / 4 = 11 band members.
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What is y=-2x+5 in standard form
Answer: 2x+y=5
Step-by-step explanation:
The standard form of a linear equation is
ax+by=c
Move all terms containing variables to the left side of the equation.
2x+y=5
Answer:
2x + y = 5
Step-by-step explanation:
[tex]\boxed{\begin{minipage}{5.5 cm}\underline{Standard form of a linear equation}\\\\$Ax+By=C$\\\\where:\\ \phantom{ww}$\bullet$ $A, B$ and $C$ are constants. \\ \phantom{ww}$\bullet$ $A$ must be positive.\\\end{minipage}}[/tex]
Given equation:
[tex]y=-2x+5[/tex]
To write the given equation in standard form, collect the terms with variables on one side of the equation, ensuring the term in x is positive.
Add 2x to both sides:
[tex]\implies y+2x=-2x+5+2x[/tex]
[tex]\implies y+2x=5[/tex]
[tex]\implies 2x+y=5[/tex]
Write an equation in slope-intercept form of the line that is perpendicular to the one given and passes through the given point. (4,8); y=-2x - 4
answer:
step by step explanation:
(4,8); y = 2x — 4 = ?
TO FIND THE ANSWER TO YOUR QUESTION:Determine the slope of m of the line in the graph below
Please help me
Answer:
Step-by-step explanation:
(2, 0), (3, 4)
(4 - 0)/(3 - 2)= 4/1 = 4
You have rented a moving truck to move into your first apartment. ABC truck has interior dimensions of 168 inches times 96 inches times 77 inches. The dimensions of your storage boxes are 24 inches times 13 inches times 28 inches. Determine how many boxes can fit into the truck.
Find the coordinates of the circumcenter of the triangle with the given vertices.
A(2, 2). B(2, 4), C(8, 4)
The circumcenter is
Answer:D
beacuse it is correct just trust me i have done this class and its correct
Find the slope: m=
Find the y-intercept: b=
Equation: y=
Answer:
y = - [tex]\frac{5}{4}[/tex] x + 5
Step-by-step explanation:
the equation of a line in slope- intercept form is
y = mx + b ( m is the slope and b the y- intercept )
calculate m using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (0, 5) and (x₂, y₂ ) = (4, 0) ← 2 points on the line
m = [tex]\frac{0-5}{4-0}[/tex] = [tex]\frac{-5}{4}[/tex] = - [tex]\frac{5}{4}[/tex]
the line crosses the y- axis at (0, 5 ) ⇒ b = 5
y = - [tex]\frac{5}{4}[/tex] x + 5 ← equation of line
Solve for x
48° 73° X°
Answer:
[tex]x=59[/tex]
Step-by-step explanation:
Angles in a triangle add to [tex]180^{\circ}[/tex].
[tex]\implies x=180-48-73=59[/tex]
Joseph and Raquel are building a scale model of the Alamo Mission for their Texas history project using a scale in which 2 inches represents 30 feet. The enclosed area of the Alamo Mission was 480 feet long and 160 wide.
What should the length of the enclosed area of the scale model be in inches?
Th length of the enclosed area of the scale model in inches is 32 inches.
How to find the length of the enclosed area of the scale model in inches?Joseph and Raquel are building a scale model of the Alamo Mission for their Texas history project using a scale in which 2 inches represents 30 feet.
The enclosed area of the Alamo Mission was 480 feet long and 160 feet wide.
The length of the enclosed area of the scale model in inches can be calculated as follows:
30 feet = 2 inches
480 feet = ?
cross multiply
length of the enclosed area = 480 × 2 / 30
length of the enclosed area = 960 / 30
length of the enclosed area = 32 inches
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For the high school basketball game, it costs $12 for every 3 tickets.
Complete the table below showing the cost and the number of tickets.
Based on the unit rate of the table, the missing values that shows the cost and the number of tickets are:
$32 and 9 tickets.
How to Complete the Table Showing Cost and Number of Tickets?To calculate the missing values in the table shown in the attachment below, we have to find the unit rate, which is the cost of 1 ticket.
Given that 3 tickets will cost $12, therefore:
Unit rate = 12 / 3 = $4 per ticket.
Using this rate, find the missing values as explained below.
For 8 tickets, we will have the following cost:
8 × $4 = $32
For $36, we will have the following tickets:
$36/$4 = 9 tickets
Thus, the missing values that will complete the table will be:
$32 and 9 tickets.
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Help me with ixl please
Answer:
∠AFB
Step-by-step explanation:
Vertical angles are opposite to one another and share the same vertex or endpoint. ∠DFE is ∠AFE both share the point F, and they are opposite to each other, so they are also vertical to each other.
PLEASE HELP ME I GIVE YOU POINTS
Answer:1.44
Step-by-step explanation:
1/2 divided by 2 In fraction
Answer:
1/4
Step-by-step explanation:
1/2 divided by 2 would be 0.25, and since that's a quarter it would be 1/4.