Answer:
4800 yard squared
Step-by-step explanation:
80 times 60= 4800
which expression is equivalent to the given expression -2x^2+8x-9+4x+7x^2+2
Answer:
-2x^2+8x-9+4x+7x^2+2 = 5x²+12x-7
Step-by-step explanation:
Consider the function f(x)=x² + 7x. Form an expression for f(a). f(a)=
The value of the expression f(a) is f(a) = a^2 + 7a, based on the given function f(x) = x^2 + 7x and the value x = a
How to form the expression for f(a)?The given parameters in the question are:
f(x) = x^2 + 7x and
x = a as in f(a)
This means that the equation of the function f(x) is given as:
f(x) = x^2 + 7x
To calculate the value of the function f(a), we simply substitute a for x in the equation of the function f(x) = x^2 + 7x.
This means that we set x to a in the equation of the function f(x) = x^2 + 7x.
So, we have;
f(a) = a^2 + 7a
The above equation cannot be further simplified or expanded
So, we conclude that
Based on the given function f(x) = x^2 + 7x and the value x = a, the value of the expression f(a) is f(a) = a^2 + 7a
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To get from home to his friend Akira's house, Jaden would have to walk 2.8 kilometers due
north. To get from home to his friend Cooper's house, Jaden would have to walk 6.3
kilometers due east. What is the straight-line distance between Akira's house and Cooper's
house? If necessary, round to the nearest tenth.
The straight-line distance between Akira's house and Cooper's house is 6.13 kilometers (rounded to the nearest tenth)
Given that,To get from home to his friend Akira's house, Jaden would have to walk 2.8 kilometers due east.The straight-line distance between Akira's house and Cooper's house is given by the distance between two points in a coordinate plane. Let the home be the origin (0, 0) of the coordinate plane and Akira's house be represented by the point (2.8, 4.7). Similarly, let Cooper's house be represented by the point (8.3, 7.4).The distance formula between the two points (2.8, 4.7) and (8.3, 7.4) is given by:distance = √[(8.3 - 2.8)² + (7.4 - 4.7)²]= √[5.5² + 2.7²]= √(30.25 + 7.29)= √37.54= 6.13 km (rounded to the nearest tenth)
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la edad de Ana es la mitad de jose y dentro de 10 años seran dos tercios ..cual es la edad de jose
La edad actual de José es de 30 años.
Para resolver este problema, primero debemos establecer ecuaciones basadas en la información proporcionada. Llamemos "x" a la edad actual de José y "y" a la edad actual de Ana. Según la primera condición, la edad de Ana es la mitad de la edad de José, por lo que podemos escribir la ecuación: y = (1/2)x.
La segunda condición nos dice que dentro de 10 años, sus edades serán dos tercios de sus edades actuales. Esto se puede expresar como: (x + 10) * (2/3) = y + 10.
Reemplazando el valor de y en la segunda ecuación con la primera ecuación, obtenemos: (x + 10) * (2/3) = (1/2)x + 10.
Resolviendo esta ecuación, podemos simplificarla y llegar a: 2(x + 10) = 3[(1/2)x + 10].
Al resolver la ecuación resultante, encontramos que x = 30.
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Someone help quick , what is the missing number
Therefore , the solution of the given problem of function comes out to be (g - f)(-1) = 29.
What exactly does function mean?The math lesson covers an extensive variety of subjects, including geometry, integers, one's divisions, construction, and both real and imagined geographic places. A work covers the connections between various variable that all work together to produce the same result. A utility is made up of a variety of distinctive components that cooperate to create distinct results for each input.
Here,
We must first evaluate g(-1) and f(-1) before subtracting the results to obtain (g - f)(-1).
We possess
=> g(x) = 5x + 18
=> g(-1) = 5(-1) + 18 = 13
=> f(x) = x² - 17
=> f(-1) = (-1)² - 17 = -16
Therefore:
=> (g - f)(-1) = g(-1) - f(-1) = 13 - (-16) = 29
So, (g - f)(-1) = 29.
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Forty percent of what number is 18?
Answer:
45
Step-by-step explanation:
Y = forty percent of blank to make 18
18 = 40/100 x Y
Y = 18 x 100/40
Y = 18 x 100 divided by 40
Y = 45
Austin takes1 minute and 45 seconds to run three-quarters of a circular track. His rate of motion is
/
radians per second.
Austin's rate of motion is (1/70)π Radians per second.
To determine Austin's rate of motion in radians per second, we need to use the formula for angular velocity:
ω = Δθ / Δt
Where:
ω = angular velocity (in radians per second)
Δθ = change in angular displacement (in radians)
Δt = change in time (in seconds)
We know that Austin runs three-quarters of a circular track, which means he covers an arc length that is equal to three-quarters of the circumference of the circle. Let's call the radius of the circle "r". Then, the arc length covered by Austin is given by:
s = (3/4) * 2πr
s = (3/2)πr
We also know that it takes Austin 1 minute and 45 seconds to cover this distance. This is the same as 105 seconds (since 1 minute = 60 seconds).
So, Δt = 105 seconds
Now, we can calculate the change in angular displacement (Δθ). The total angle around a circle is 2π radians, so the angle covered by Austin is given by:
Δθ = (3/4) * 2π
Δθ = (3/2)π
Therefore, Austin's rate of motion (ω) in radians per second is:
ω = Δθ / Δt
ω = [(3/2)π] / 105
ω = (3/210)π
ω = (1/70)π radians per second
So, Austin's rate of motion is (1/70)π radians per second.
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Your teacher mixed milliliters of blue water and milliliters of yellow water in a ratio of 2:3. Draw a diagrahm
Answer: blue water: 00
Yellow water: 000
Step-by-step explanation:
just show how many parts
Plzz help me thank you
Answer:
A
Step-by-step explanation:
Please help, I will give brainliest. I am struggling badly.
Answer:
(C) y = x/2 + 2
Translate “ the sum of x and one- half into a mathematical expression
Hey!!!!
Question:The sum of X and one half Answer:. X +1/2Hope it helps.....
Good luck on your assignment
__________________________________________
Pls help me solve whole page
what is golden ratio, and explain it's history
Answer:
The golden ratio is a proper term in the field of mathematics, but it finally covers more than the research in the field of mathematics. According to the current literature discussion, we can say that the discovery of the Golden ratio and how it evolved is still a mystery. But studies have shown that the Pythagorean school of ancient Greece in the 6th century BC studied the formation of regular 5-sided and regular 10-sided plots, leading modern mathematicians to conclude that the Pythagorean school had touched on and even mastered some of the rules of the golden ratio and also discovered irrational numbers. It focuses on the relationship from mathematics, to explore the principle of beauty and that beauty is harmony and proportion, according to the proportional relationship can form beautiful patterns, this is actually a digital proportional relations, the line is divided into two parts, a long and a short period of the ratio of the equal to the ratio of length to a long, their proportion is around 1.618:1, This mathematical principle is also embodied in the famous Frederikian sequence, in which everything in this proportion shows the harmony and balance of its internal relations.
In the 4th century BC, the Greek mathematician Eudoxus was the first to systematically study this problem and establish the theory of proportion. Around 300 BC, Euclid absorbed the research results of Eudoxus in writing The Elements of Geometry and further systematically discussed the Golden Section, which became the earliest treatise on the golden Section (i.e. the middle and the end ratio) [5].
After the Middle Ages, the golden ratio was shrouded in mystery. Italian mathematician Luca Pacioli called the middle and the end of the ratio sacred and wrote a book about it. The German astronomer Johannes Kepler called the divine ratio the Golden Ratio. Golden in the 19th century the name only gradually, and the evidence is that German mathematician Martin Ohm (English: Martin Ohm) wrote the second edition of the basic pure mathematics annotation wrote about the interpretation of the golden ratio: "people used to put any straight line along the way will be divided into two parts, the method of known as the golden mean". And in the ninth edition of the Encyclopaedia Britannica, published in 1875, Sully notes: "The interesting, experimental and strong idea put forward by Frederick... proclaimed the supposed superiority of the 'golden Section' in visual proportion." So the Golden Section was already popular. In the 20th century, American mathematician Mark Barr gave it the name Phi. The Golden Section has many interesting properties and has been widely used by humans to make it famous today. The most famous example is the golden ratio or 0.618 method in optimization, which is first proposed in 1953 by Jack Kiefer (English: Jack Kiefer), an American mathematician, and is promoted in China in 1970s.
Venessa bought 80 apples for 4$.out of these apples 25 precent were rotten and had to be thrown away Vanessa sold the remaining apples at 6 cents per apple. What is the profit or loss percentage
The loss percentage is 91%.Given that Venessa bought 80 apples for 4$, out of these apples, 25% were rotten and had to be thrown away. Venessa sold the remaining apples at 6 cents per apple.To calculate the profit or loss percentage, we need to determine the cost price, selling price, and the number of apples sold.
Cost price (CP) = 4 $.Selling price (SP) = 80 × 0.75 × 6 cents= 36 cents = 0.36 $.Now, let's calculate the profit.Profit = SP – CP= 0.36 $ – 4 $= – 3.64 $Loss = CP – SP= 4 $ – 0.36 $= 3.64 $.
Therefore, Venessa incurred a loss of $3.64 when she sold 80 apples at 6 cents per apple.Now let's calculate the loss percentage Loss Percentage = (Loss / CP) × 100= (3.64 / 4) × 100= 91%.
Therefore, the loss percentage is 91%.Note: If the result obtained after the subtraction of SP from CP is negative, it means there is a loss, and the percentage of loss can be calculated by (loss/CP) × 100.
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Solve pls brainliest
Answer:
In order: 7.5, 7.5061, 7.56, 9.213
Step-by-step explanation:
Joan is taking an admissions examination. If
she has to get at least 40 of the 60 questions
right to pass, what percent of the questions
does she need to answer correctly?
Answer:
66.67%
Step-by-step explanation:
3 6 9 12 15 18 21 24 27 30 is odd or even numbers?
Answer: Half of them are even and half of them are odd.
Step-by-step explanation:
The even numbers are 6, 12, 18, 24, and 30. An even number is defined as a number that is divisible by 2, meaning it has no remainder when divided by 2. For example, 6 divided by 2 equals 3 with no remainder, so 6 is even.
The odd numbers are 3, 9, 15, 21, and 27. An odd number is defined as a number that is not divisible by 2, meaning it has a remainder of 1 when divided by 2. For example, 9 divided by 2 equals 4 with a remainder of 1, so 9 is odd.
Therefore, out of the given numbers, half of them are even and half of them are odd.
________________________________________________________
The grocery store has bulk pecans on sale, which is great since you're planning on making 5 pecan pies for a wedding. How many pounds of pecans should you buy?
First, determine what information you need to answer this question, then click here to display that info (along with other info).
You will need to buy how many pounds of pecans.
You should buy 4 to 5 pounds of pecans to make 5 pecan pies for the wedding.
What is sale?Act of exchanging good or service for money. It is a business transaction in which seller transfer the ownership of good or service to a buyer in exchange for money. Still can be done in a variety of full suggest through retail store online store a question or even the by buttoning sale is one of the most important except of the any business and its primary view business make money.
You will need to buy how many pounds of pecans. To figure this out, you'll need to know the size of each pie and how many pecans each will require. The typical size of a pecan pie is 9 inches and generally requires 1.5 to 2 cups of pecans, depending on the recipe.
Therefore, you will need 7.5 to 10 cups of pecans. Since there are 16 tablespoons in 1 cup, this means you will need 120 to 160 tablespoons of pecans. Since there are 2 tablespoons in 1 ounce of pecans, this means you will need 60 to 80 ounces of pecans. Since there are 16 ounces in 1 pound, this means you will need 4 to 5 pounds of pecans.
Therefore, you should buy 4 to 5 pounds of pecans to make 5 pecan pies for the wedding.
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Solve −5x−3≥2 and 4x−2≥5 and write the solution in interval notation.
Answer:
-5x-3≥2= -∞, -1
Step-by-step explanation:
and for 4x-2≥5= 7/4,∞
Answer:
(−∞,−1]∪[7/4,∞)
Step-by-step explanation:
what is the answer??
Answer:
76 unit^2
Step-by-step explanation:
Total area: (0.5 * base * height) +( length * breadth ) + (0.5 * base * height)
= (0.5 * 8 * 2) + ( 7*8) +( 0.5 * 8 * 3) = 8 + 56 + 12 = 76
does anyone have the keys for edmentum guided notes!!! please help
It is important to note that sharing or requesting specific keys or answers to educational materials, including guided notes, would be considered unethical and potentially a violation of academic integrity.
Guided notes are intended to assist students in actively engaging with course material and enhancing their learning experience. It is recommended that you approach your teacher or instructor for any clarification or additional resources you may need to fully understand the content.
They are in the best position to provide you with the necessary guidance and support.
Instead of seeking shortcuts or unauthorized access to answers, it is more beneficial to invest time and effort in studying, asking questions, and actively participating in your educational journey.
This approach will not only help you grasp the subject matter more effectively but also promote personal growth and knowledge development.
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The average annual cost (including tuition, room, board, books, and fees) to attend a public college takes nearly a third of the annual income of a typical family with college-age children (Money, April 2012). At private colleges, the average annual cost is equal to about 60% of the typical family's income. The following random samples show the annual cost of attending private and public colleges.
Private colleges: 52.8, 43.2, 45.0, 33.3, 44.0, 30.6, 45.8, 37.8, 50.5, 42.0.
Public colleges: 20.3, 22.0, 28.2, 15.6, 24.1, 28.5, 22.8, 25.8, 18.5, 25.6, 14.4, 21.8.
Required:
a. Based on your computation of the two sample means and the two sample standard deviations, find the degrees of freedom.
b. What is the point estimate of the difference between the two population means?
c. Develop a 95% confidence interval of the difference between the annual cost of attending private and pubic colleges.
Answer the following question What is the quotient of 9.632 and 4.5?
Question:
What is the quotient of 9.632 and 4.5?
Solution:
Notice that the answer of the division problem is the quotient of the division then, we have that the quotient of 9.632 and 4.5 is:
\(q=\frac{9.632}{4.5}=2.14\)then, the correct answer is:
\(q=\text{ 2.14}\)I need help with this question
Answer:
4x-x=2
Step-by-step explanation:
2x-x/2=1 (by multiplying both sides by 2)
4x-x=2
3x=2
x=2/3
for the first one the answer are
add 5 to both sides
subtract 5 from both sides
add 1/2x to both sides
subtract 1/2 from both sides
the second one is
multiply both sides by 1/5
dived both sides by 1/5
multiply both sides by 6/7
dived both sides by 6/7
Answer:
1. add 1/2x to both sides
a. you want to combine the like terms. in this case, it is the x variable.
you are left with 7/6x = 5
2. multiply by 6/7
a. the reciprocal of 7/6 will cancel out the values
Weekly wages at a certain factory are
normally distributed with a mean of
$400 and a standard deviation of $50.
Find the probability that a worker
selected at random makes between
$300 and $350.
[ ? ]%
The probability that a worker selected at random makes between $300 and $350 is 0.1359 Or 13.6%.
What is a normal distribution?A probability distribution that is symmetric about the mean is the normal distribution, sometimes referred to as the Gaussian distribution. It demonstrates that data that are close to the mean occur more frequently than data that are far from the mean.
Given, Weekly wages at a certain factory are normally distributed.
Mean(\(\overline{x}\)) = 400, S.D(\(\sigma\)) = 50.
Now, Since the wages are normally distributed we know,
\(z = \frac{x - \overline{x}}{\sigma}\).
Therefore,
z = (300 - 400)/50.
z = - 2.
And
z = (350 - 400)/2.
z = - 1.
Now, from the z-table,
P(z ≤ - 2) = 0.0228 and P(z ≤ - 1) = 0.1587.
Combining the two we have P( - 2 ≤ z ≤ - 1) = 0.1587 - 0.0228.
P( - 2 ≤ z ≤ - 1) = 0.1359.
As a result, the likelihood that a randomly chosen employee will earn between $300 and $350 is 0.1359, or 13.6%.
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4.2 7 5 7 = 3 1 9 d
help me find what D is!!!!!!!!!!!!!!!!!!!!!!
Answer:74.6076665809
Step-by-step explanation:
Kevin drove to the mountains last weekend. There was heavy traffic on the way there, and the trip took 9 hoursWhen Kevin drove home, there was no traffic and the trip only took 4 hours. his average rate was 40 per hour faster on the trip home, how far away does Kevin live from the mountains? Do not do any rounding
Answer:
288 miles
Step-by-step explanation:
Kevin's trip took 9 hours one way, and 4 hours the other way, driving 40 mph faster. You want to know the one-way length of Kevin's trip to the mountains.
SetupThe relation between time, speed, and distance is ...
speed = distance/time
Using d to represent the one-way distance Kevin drove, we can relate his speeds with ...
d/4 = 40 +d/9 . . . . . . speed coming home was 40 mph more than going
SolutionMultiplying by 36 to clear fractions, we have ...
9d = 1440 +4d
5d = 1440 . . . . . . . subtract 4d
d = 288 . . . . . . . divide by 5
Kevin lived 288 miles from the mountains.
How many hours did Laurie work this week?
Answer:
Laurie work 35 hours for this week
What is business mathematics?
Business mathematics is the branch of mathematics utilized by businesses to track and coordinate their operations. Accounting, inventory management, marketing, sales forecasting, and financial analysis are all areas where commercial businesses apply mathematics.
Simple arithmetic, elementary algebra, statistics, and probability are all frequently utilized in business. More complex arithmetic, such as calculus, matrix algebra, and linear programming, may be used to solve some management challenges.
According to question
Laurie work for this week = 4s + 3 hours
The of rate of work per hour = 2s + 4
The total amount she earned = 700 $
Therefore:
⇒ (hours of work) x (rate of work) = Total amount
⇒ (4s + 3) (2s + 4) = 700
⇒ 8s² + 22s + 12 = 700
⇒ 4s² + 11s + 6 = 350
⇒ 4s² + 11s - 344 = 0
⇒ s = 8 and s = -43/8
Taking s = 8 (positive)
Laurie work for this week = 4s + 3 hours
⇒ putting s = 8
4(8) + 3 = 32 + 3 = 35 hours
hence, Laurie work this week for 35 hours.
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i need help please help me
here is the picture
Therefore, the answers for the given composite functions are:
f(g(7)) = 814
g(f(4)) = 151
f(g(8)) = 898
f(f(2)) = -4
What is function?A function from a set X to a set Y allocates precisely 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. Originally, functions were the idealization of how a variable quantity depended on another quantity.
Here,
To evaluate function compositions, we substitute the inner function into the outer function and simplify.
(a) To evaluate f(g(7)), we first find g(7):
g(7) = 7(7)^2 + 9(7) + 3 = 343 + 63 + 3 = 409
Now we can substitute g(7) into f(x):
f(g(7)) = f(409) = 2(409) - 4 = 814
(b) To evaluate g(f(4)), we first find f(4):
f(4) = 2(4) - 4 = 4
Now we can substitute f(4) into g(x):
g(f(4)) = g(4) = 7(4)^2 + 9(4) + 3 = 112 + 36 + 3 = 151
(c) To evaluate f(g(8)), we first find g(8):
g(8) = 7(8)^2 + 9(8) + 3 = 7(64) + 72 + 3 = 451
Now we can substitute g(8) into f(x):
f(g(8)) = f(451) = 2(451) - 4 = 898
(d) To evaluate f(f(2)), we first find f(2):
f(2) = 2(2) - 4 = 0
Now we can substitute f(2) into f(x):
f(f(2)) = f(0) = 2(0) - 4 = -4
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