Answer:
"Playing video games has been shown to enhance memory and even increase brain volume"
Step-by-step explanation:
The claim is approves the usage of video games.
The first piece of evidence supports the usage, citing how video games can "enhance memory" which is positive.
The second piece of evidence does the opposite and disapproves video games, citing them as an "addiction" which is negative.
help me for a cooki pliss
Answer:
( Where is says “ Use the answers to the problems above to help solve some of those below “ I cannot see the left side. Therefore, I cannot help you there )
3/4 of 32=24
74x32=2368
1/4 of 33=8.25
74x33=2442
0.75x32=24
76x32=2432
0.75x33=24.75
76x33=2508
75x32=2400
0.76x32=24.32
75x33=2475
0.76x33=25.08
24x96=2304
75x37=2775
0.74x32=23.68
76x112=8512
Step-by-step explanation:
Let y = 2(x – 4)2 – 8.
Part A: Is the given relation a function? Is it one-to-one? Explain completely. If it is not one-to-one, determine a possible restriction on the domain such that the relation is one-to-one. (5 points)
Part B: Determine y–1. Show all necessary calculations. (5 points)
Part C: Prove algebraically that y and y–1 are inverse functions. (5 points)
A. The given relation is a function, but is not one-to-one. A possible domain for the inverse is given as follows: x ≥ 4.
B. The inverse function is given as follows: [tex]f^{-1}(x) = \sqrt{0.5(x + 8)} + 4[/tex]
C. The composition of the function with it's inverse results in x, hence they are inverse.
How to obtain the features of the function?The quadratic function for this problem is defined as follows:
y = 2(x - 4)² - 8.
The classifications regarding function and one-to-one are given as follows:
The relation is a function, as each value of x is mapped to a single value of y.The relation is not one-to-one, as values of y, may be mapped to multiple values of x.The inverse can only be obtained when the function is one-to-one, hence a possible domain is given as follows:
x ≥ 4.
(as the vertex is at x = 4).
To obtain the inverse, first we must exchange the variables x and y, hence:
x = 2(y - 4)² - 8.
Now we must isolate the variable y, as follows:
2(y - 4)² = x + 8
(y - 4)² = 0.5(x + 8)
[tex]\sqrt{(y - 4)^2} = \sqrt{0.5(x + 8)}[/tex]
[tex]y - 4 = \sqrt{0.5(x + 8)}[/tex]
[tex]f^{-1}(x) = \sqrt{0.5(x + 8)} + 4[/tex]
The composition of the two functions is given as follows:
[tex](f \circ f^{-1}(x)) = 2(\sqrt{0.5(x + 8)} + 4 - 4)^2 - 8)[/tex]
[tex](f \circ f^{-1}(x)) = 2(\sqrt{0.5(x + 8)})^2 - 8[/tex]
[tex](f \circ f^{-1}(x)) = x + 8 - 8[/tex]
[tex](f \circ f^{-1}(x)) = x[/tex]
As the composition results in x, they are inverses.
More can be learned about quadratic functions at https://brainly.com/question/24737967
#SPJ1
Find the slope of the line with the points (-2/3,-3) and (-1.5,-5/7)
The slope of the line with the points (-2/3,-3) and (-1.5,-5/7) is 2.743.
What is a slope?The concept that will be used is the slope. A line's steepness can be determined by looking at its slope. Slope is calculated mathematically as "rise over run" (change in y divided by change in x).
The slope of the line passing through the points9 x1 y1) and (x2, y2 ) can be written as :
m= (y2 - y1)/(x2 -x1)
x1 = -2/3 , y1 = -3
x2 = -1.5 , y2 = -5/7
Then substitute the values,
Then the slope = [ (-5/7+3) / (-1.5+2/3 )]
= (16/7)/(-5/6)
=2.743
Learn more about slope at:
https://brainly.com/question/3493733
#SPJ1
For the number line shown, which statement is NOT true. (HINT substitute a number for
the a and b values.)
la > b
-|b|
Ola > a
|a| < b|
a
0.
b
The statement which is not true for the given number line is |a| > b, option(a).
What is a number line?
A number line is a representation of a graduated straight line that is used to represent real numbers visually. It is assumed that every point on a number line corresponds to a real number and that every real number corresponds to a point.
For the given question,
Point a is to the left of 0, so it is a negative number.
So taking the modulus of a, we get the positive value of a.
But since a is closer to 0 than b, if the positive value of a is less than b.
For example if a = -4 and b is 6
|a| = |-4| = 4 < b
So |a| < b
Therefore the incorrect statement is option(a), |a| > b.
To learn more about the number line, follow the link.
https://brainly.com/question/24644930
#SPJ1
solve for s
S/31=24 s=
Answer:
s = 744Step-by-step explanation:
[tex]\cfrac{s}{31}=24[/tex]
Multiply both sides by 31.
[tex]\cfrac{31s}{31}=24\times\:31[/tex]
[tex]\boxed{s=744}[/tex]
-Hope this helps!
Answer:
s = 744
Step-by-step explanation:
Now we have to,
→ find the required value of s.
The equation is,
→ s/31 = 24
Then the value of s will be,
→ s/31 = 24
→ s = 24 × 31
→ [ s = 744 ]
Hence, the value of s is 744.
Evaluate the two expressions below to decided if they are equivalent to each other. Write Yes or No when stating if they are equivalent.
Value of expression 1: 176
Value of expression 2: 32
Are they equivalent? No
How to evaluate expressions?Equivalent expressions are expressions that work the same way even though they look different. They have the same value for all values of the variables. They can be transformed into each other using the rules of algebra, such as the commutative, associative, and distributive properties.
Since the value of y is 2
Expression 1: 4y (y + 20)
To evaluate 4y (y + 20), substitute y = 2 into 4y (y + 20). That is:
4*2 (2 + 20) = 8(2+20) = 8(22) = 176
Expression 2: 4y + 24
To evaluate 4y + 24, substitute y = 2 into 4y + 24. That is:
(4*2) + 24 = 8 +24 = 32
Since the value of expression 1 is not equal to the value of expression 2. Thus, they are not equivalent.
Learn more about equivalent expressions on:
brainly.com/question/15775046
#SPJ1
HELP! :,) pleaseeeee
Answer:
1)a=8,b=6,c=4
2)a=4,b=9,c=14
3)a=12,b=12,c=24
spent over an hour, please help me get this finished quick..!
The unit rate of the number of pages penny reads per hour is; 56 pages per hour
How to find the unit rate?A unit rate is also called unit ratio and it describes how many units of the first type of quantity corresponds to one unit of the second type of quantity.
Now, we are told that;
Number of pages penny reads = 14 pages
Time he takes to read the 14 pages = 1/4 hours
Thus, applying the concept of unit rate gives;
Unit rate = 14/(1/4)
Unit rate = 14 * 4/1
Unit rate = 56 pages per hour
Read more about Unit rate at; https://brainly.com/question/19493296
#SPJ1
Help
The table shows how the amount of Ariel’s bank account changed over several weeks.
Fill in the missing values.
Based on the changes that occurred in Ariel's bank account, the missing values are -$223.75, -$1.40, and -$4.40.
What are the missing values in the table?The missing values from the given table of the changes that occurred in Ariel's bank account balance is determined as follows:
Week 4 change:
Change = -$41.40 - $182.35
Change = -$223.75
Week 5 balance: this is obtained from the sum of the change and the balance of the previous week:
Balance = -$41.4 + $40
Balance = -$1.40
Week 6 change:
Change = -$5.80 - (-$1.4)
Change = -$4.40
Learn more about Ariel's bank account at: https://brainly.com/question/24657263
#SPJ1
An orbit of a satellite around a planet is an ellipse, with the planet at one focus of this ellipse. The distance of the satellite from this star varies from 300,000 km to 500,000 km, attained when the satellite is at each of the two vertices. Find the equation of this ellipse, if its center is at the origin, and the vertices are on the x-axis. Assume all units are in 100,000 km.
An ellipse's equation is (x - h)2/a2 + (y - k)2/b2 = 1.
What are Equations?A mathematical statement that has a "equal to" symbol between two expressions with equal values is called an equation.
Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
We have LHS = RHS (left hand side = right hand side) in every mathematical equation.
To determine the value of an unknown variable that represents an unknown quantity, equations can be solved.
A statement is not an equation if it has no "equal to" sign.
According to our question-
c is the distance between the center and the focus, and a and b are the distances from the center to the vertices, respectively, in the formula c2 = a2 - b2.
Therefore, we have 12 = 42 - b2.
As a result, 1 = 16 - b2, or b2 = 15.
The final equation is therefore written as x2/16 + y2/15 = 1.
learn more about equations click here:
brainly.com/question/2972832
#SPJ1
Helpppppppp due soon
if u can't do this then ur in the matrix and a failure to life
Thankyou for answering first section of this question but noone seemed able to answer this second section: Out of a group of 32 students playing their favourite hobbies, the teenager from my question before, rejoins the group and another teenager is picked at random. What is the probability that the teenager picked at random is male and their favourite hobby is playing video games? The group in total is 32, 14 males, 18 females playing their favourite hobbies. Out of these 14 males participating, 9 love sports, 2 love playing video games, 3 love watching films. Out of the 18 females playing their favourite hobbies, 7 of these love sports, 3 love playing video games, 8 love watching films. What is the probability that the teenager that is picked from random is male and their favourite hobby is playing video games? You can simplify this fraction if you wish.
The probability that the teenager picked at random is male and their favorite hobby is playing video games is given as follows:
1/16.
How to obtain the probability?The definition of a probability is that it is calculated as the division of the number of desired outcomes by the number of total outcomes.
The desired and the total outcomes for this problem are given as follows:
Desired outcomes: Males who have playing video games as their favorite hobby.Total outcomes: 32 students surveyed.Of the 14 males, 2 have playing videogames as their favorite hobby, hence the number of desired outcomes is given as follows:
2.
Then the probability is calculated as follows:
p = 2/32
p = 1/16.
The probability was simplified as the quotient of 32 and 2 has a result of 16.
More can be learned about probabilities at https://brainly.com/question/14398287
#SPJ1
Wal-Mart is selling cards for $2.75. They bought them for a dollar from the manufacturer. What is the percentage of increase in price?
Answer:
The percentage of increase in price is 175%. To calculate this, you can subtract the cost price (in this case, $1) from the selling price ($2.75) to find the profit ($1.75). Then divide that profit by the cost price and multiply by 100 to express it as a percentage.
$2.75 - $1 = $1.75
$1.75/$1 * 100 = 175%
If you want to calculate the percentage increase in price, use the formula:
Percentage Increase = (New Price - Original Price) / Original Price x 100
In this case, the original price is $1 (the price of buying the cards) and the new price is $2.75 (the price of selling the cards). So, plugging these values into the formula:
Percentage Increase = (2.75 - 1) / 1 x 100 = 175%
The percentage increase in price is 175%.
The table represents a proportional relationship. Write an equation to represent the relationship.
The table has two rows and three columns. The first row is cups of flour, x. The second row is loaves of bread, y. Six cups of flour, two loaves of bread. Nine cups of flour, three loaves of bread. Fifteen cups of flour, five loaves of bread.
Enter the correct equation in the box.
Answer:
[tex]C = \dfrac{1}{3} L[/tex]
Step-by-step explanation:
Number of cups of flour/number of loaves = constant, k
We can see this ratio is constant throughout the table
6/2 =9/3 = 15/5 = 3
Therefore the equation can be written as
C/L = 3
or
C = (1/3)L
where C is the number of cups needed to make L loaves
g³-h² + 8, when g = 3, h = 5
Answer:
The expression G³-h² + 8, when g = 3 and h = 5, evaluates to:
3³ - 5² + 8 = 27 - 25 + 8 = 10
Step-by-step explanation:
Answer:
10
Step-by-step explanation:
3^3=27,
5^2=25,
27-25=2,
2+8=10
A variable can be used in an expression that represents a real-world situation where one value is unknown, not stated or can change. Let’s say Jenna is four years older than her sister. If you know that Jenna’s sister is 10, then Jenna is 4 + 10. Jenna is 14. If you don’t know how hold Jenna’s sister is, you can use a variable in an expression to represent Jenna’s age. If we call Jenna’s sister’s age “a,” then Jenna’s age is 4 + a. We could use any letter to represent the variable. 4 + b or 4 + z represent Jenna’s age, too.
The requried equation model for the age of Jenna and her sister is given as y = x + 4.
What are equation models?The equation model is defined as the model of the given situation in the form of an equation using variables and constants.
here,
A variable can be used in an expression that represents a real-world situation where one value is unknown, not stated or can change.
Let the age of the Jenna sister be x,
According to the question,
Jenna[y] is four years older than her sister,
So,
y = x + 4
Form above expression
When her sister is of 4 years,
Jenna age,
y = 4 + 4
y = 8 years
Thus, the requried equation model for the age of Jenna and her sister is given as y = x + 4.
Learn more about models here:
https://brainly.com/question/22591166
#SPJ1
Concluding that there is an effect when in reality no effect exists is known as a: A Type II error. B Type I error. C Standard error
Concluding that there is an effect when in reality no effect exists is known as a: Standard error.
The approximate standard deviation of a statistical sample population is known as the standard error (SE) of a statistic.
By utilizing standard deviation, the standard error is a statistical concept that assesses how accurately a sample distribution represents a population. In statistics, the difference between a sample mean and the population's actual mean is known as the standard error of the mean.
The difference between the population's computed mean and one that is widely regarded as correct is described by the standard error.
Know more about Standard error at:
https://brainly.com/question/1191244
#SPJ4
complete the following sentence. a || b || c so a [?] c
If a || b || c, then a || c using Euclid's axiom.
What is parallel lines?Parallel lines are coplanar infinite straight lines that do not cross at any point in geometry. Parallel planes are planes that never intersect in the same three-dimensional space. Parallel curves are those that do not touch or intersect and maintain a constant minimum distance. Parallel lines are lines that are always the same distance apart in a plane. Parallel lines never cross. Perpendicular lines are those that connect at a straight angle (90 degrees). Parallel lines in geometry are two lines in the same plane that are at equal distance from each other but never intersect. They can be both horizontal and vertical in orientation.
Here,
given,
a || b || c
Euclid's axiom states that “Things which are equal to the same thing are equal to one another.” Here, A and C are things which are equal to B, so A=C.
so using this,
a || c
If a || b || c, then using Euclid's axiom, a || c.
To know more about parallel lines,
https://brainly.com/question/28766787
#SPJ1
You buy a new computer for $1200. The value y (in dollars) of the computer decreases by 35% each vear.
7) Write an exponential decay model that represents the value of the computer.
8) Use the model from #7 to estimate the value after 3 years.
On solving the provided question we can say that - The Range of the given function, f(x) = sin(x) , Range = -1 < y < 1
What is Range?Range: the discrepancy between the top and bottom numbers. To get the range, locate the greatest observed value of the variable and deduct the least observed value (the minimum). The data points between the two extremes of the distribution are not taken into consideration by the range; just these two values are considered. Between the lowest and greatest numbers, there is a range. Values at the extremes make up the range. The data set 4, 6, 10, 15, 18, for instance, has a range of 18-4 = 14, a maximum of 18, a minimum of 4, and a minimum of 4.
The Range of the given function, f(x) = sin(x) -1 < y < 1
To know more about Range visit:
brainly.com/question/12789483
#SPJ1
Solving the provided question, we can say that the exponential growth is the positive form of the exponential decay model that will be as the = > y = [tex]1500(.82)^t[/tex]
What is exponential growth?The process of quantity growth over time is called exponential growth. occurs when the rate at which a quantity changes instantaneously with time is proportionate to the quantity itself. A data pattern that shows bigger increases with time is known as exponential growth. Compound interest yields exponential rewards in the world of finance. Savings accounts with compound interest sometimes see exponential growth. characterized by an extremely fast exponential growth rate rise (in size or extent). exponentially. The exponential function has the formula f(x)=abx where a and b are positive real values. Sketch exponential functions using the app below for different values of a and b. Describe verbally how modifying a and b changes the graph's form.
here,
we can say that the exponential growth is the positive form of the exponential decay model
that will be as the = > y = [tex]1500(.82)^t[/tex]
To know more about exponential growth visit:
https://brainly.com/question/12490064
#SPJ1
28% of the amount in Keith’s savings is $350. How much money does Keith have in his savings?
Answer:
1250 in savings
Step-by-step explanation:
Can someone help me please ?
On solving the provided question, we can say that perimeter of the quadrilateral the value of x =0.8333333333.
what is quadrilateral?A quadrilateral is a four-sided polygon in geometry that has four edges and four corners. The word is a derivative of the Latin words quadri and latus (meaning "side"). Having four sides, four vertices, and four corners, a rectangle is a two-dimensional form. Concave and convex come in primarily two varieties. Additionally, there are several subclasses of convex quadrilaterals, including trapezoids, parallelograms, rectangles, rhombuses, and squares. Four straight sides make up a rectangle, which is a two-dimensional form. There are several different types of quadrilaterals, including parallelograms, trapezoids, rectangles, kites, squares, and rhombuses.
Here quadrilateral sides are 3x+2, x, 2x+5, 6x-17
To find the perimeter of a quadrilateral,
we need to add all the lengths of four sides,
i.e., the perimeter of ABCD Quadrilateral = sum of lengths of all sides
= AB +BC + CD + DA.
= 3x+2+x+ 2x+5+6x-17
= 12x+(7-17)
= 12x-10
Simplifying
12x + -10 = 0
Reorder the terms:
-10 + 12x = 0
Solving
-10 + 12x = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '10' to each side of the equation.
-10 + 10 + 12x = 0 + 10
Combine like terms: -10 + 10 = 0
0 + 12x = 0 + 10
12x = 0 + 10
Combine like terms: 0 + 10 = 1
12x = 10
Divide each side by '12'.
x = 0.8333333333
Simplifying
x = 0.8333333333
so the value of x =0.8333333333
To know more about quadrilateral visit:
https://brainly.com/question/29934291
#SPJ1
which expression is equivalent to -2(x+7)-45
Answer:
Step-by-step explanation:
Determine the range for the given domain D: {-3, 0, 2,7} in f(x) = | x^2 -5|
The range for the given domain is {4, -5, -1, 44}.
What is Function?A function is a relation from a set A to a set B where the elements in set A only maps to one and only one image in set B. No elements in set A has more than one image in set B.
Here set A is the domain and the images of the elements of set A is range.
Given the function,
f(x) = x² - 5
Domain is {-3, 0, 2, 7}
Domain is the values of x and range is the value of f(x).
If x = -3, f(x) = (-3)² - 5 = 4
If x = 0, f(x) = 0² - 5 = -5
If x = 2, f(x) = 2² - 5 = -1
If x = 7, f(x) = 7² - 5 = 44
So the range is {4, -5, -1, 44}
Hence the set {4, -5, -1, 44} is the range of the function given.
Learn more about Functions here :
https://brainly.com/question/12431044
#SPJ1
what is 2899 divided by 8999?
0.3221469052
I hope its right
I am confused what is the micrograms per day
Answer:
1 microgram per day = 0.000000001/86400 kilograms per second
help me pleaseee!!;)
So on solving the provided question, we can say that the mathematical expression will be as follows, z-12, 17xy, 4x+75.
What kinds of expressions are examples?Any mathematical statement that includes numbers, variables, and an arithmetic operation between them is known as an expression or algebraic expression. In the expression 4m + 5, for instance, the terms 4m and 5 are separated from the variable m by the arithmetic sign +. In mathematics, it is possible to multiply, divide, add, or remove. The construction of an expression is as follows: Expression, number, and mathematical operator Numbers, variables, and functions are the building blocks of a mathematical expression (such as addition, subtraction, multiplication or division etc.) Expressions and phrases can be contrasted.
x - 6 + z = 9-6+5 = 8
5*(x+y) = 5*(9 + 10 ) = 95
2x + z = 2*9 + 5 = 23
To know more about expression visit:-
brainly.com/question/14083225
#SPJ1
Consider the line y = 4x + 9. If a second line is perpendicular to this one, what is its slope? PLEASE SHOW YOUR WORK!!!
Answer:
-1/4
Step-by-step explanation:
perpendicular slopes are negative reciprocals
the negative reciprocal of 4 is -1/4
Chanice drives her scooter 7 kilometres north. She stops for lunch and then drives 5 kilometres east. What distance did she cover? What was her displacement?
Chanice's approximate displacement is 8.60 km as she rides her scooter 7 kilometers north. She has lunch and then travels 5 kilometers east.
What is Pythagorean Theorem?The Pythagorean theorem, sometimes known as Pythagoras' theorem, is a basic relationship in Euclidean geometry between the three sides of a right triangle. It indicates that the area of the hypotenuse square is equal to the sum of the areas of the squares on the other two sides. The Pythagorean theorem states that the sum of the squares on the legs of a right triangle equals the square on the hypotenuse.
Here,
To find the length of one missing side in a triangle, you can use the Pythagorean Theorem:
a² + b² = c²
7² + 5² = c²
49 + 25 = c²
74 = c²
√74 = c
c ≈ 8.60 km
8.60 km is Chanice's approximate displacement as she drives her scooter 7 kilometres north. She stops for lunch and then drives 5 kilometres east.
To know more about Pythagorean Theorem,
https://brainly.com/question/14930619
#SPJ1
Y=-2x-4 y=1/2x +6 what is the solution of the system of equation
Answer: To find the solution of a system of equations, we can either use substitution or elimination method.
For this system of equations, we can use the substitution method:
First, we solve one equation for one of the variables. For example, we can solve the first equation for y: y = -2x - 4
Then, we substitute this expression of y into the second equation and solve for x: 1/2x + 6 = -2x - 4
We can simplify this equation by adding 2x to both sides: 1/2x + 2x + 6 = -4
And then by adding 6 to both sides: 1/2x + 2x + 12 = 2
And then by multiplying both sides by 2: x + 4x + 24 = 4
And then by simplifying: 5x = -20
Finally, we find x = -4
Now that we have found x, we can substitute it back into one of the equations to find y:
y = -2(-4) - 4 = 8 - 4 = 4
So the solution of the system of equations is x = -4 and y = 4
We can check that this solution satisfies both equations.
Step-by-step explanation:
julia buys a game console online for $497. if the shipping and handling is an additional 7% of the price, how much is the shipping and handling?