(a )7 squares wide grid
(b) If the grid is 20 squares tall, then
number should replace A to give the vertical
axis the best scale for plotting the data . A = 0.1
According to the data,
(a) x = 35 one square represents five {calculate the width
there need 7 compartment in x axis. proportionally}
so the answer is 7 square wide
(b) The largest value of distance from store is 1.9 km
the grid is 20 square tall {when A = 0.1, 20× 0.1 = 2 km > 1.9 km}
so A = 0.1
The grid method is a written method, which is used when multiplying numbers. It involves partitioning numbers into tens and units before they are multiplied. The grid method for multiplication is also known as the box method, because it involves adding numbers into boxes.
What is the Grid Method of multiplication?The grid method is a written method, which is used when multiplying numbers. It involves partitioning numbers into tens and units before they are multiplied. The grid method for multiplication is also known as the box method, because it involves adding numbers into boxes.
Before you start teaching them to use the grid method for these slightly more advanced multiplications, you should first check that they:
- have a solid understanding of times tables;
- can multiply any number by 10;
- can multiply one-digit numbers by multiples of 10 (for example, 6 x
20, 8 x 70 and so on);
- can multiply two multiples of 10, (for instance, 40 x 90);
- can reliably add four numbers, some of which are three-digit.
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(a )7 squares wide grid
(b) If the grid is 20 squares tall, then
number should replace A to give the vertical
axis the best scale for plotting the data . A = 0.1
According to the data,
(a) x = 35 five squares are represented by one; determine the width.
In the X axis, 7 compartments are required. proportionally}
the response is 7 square broad.
(b) 1.9 km represents the furthest distance from the store.
When A = 0.1, the grid has 20 squares, so 0.1 = 2 km is greater than 1.9 km.
so A = 0.1
When multiplying numbers, a textual method called the grid method is employed. Prior to multiplication, it entails dividing integers into tens and units. The box method, which involves adding numbers to boxes, is another name for the grid method of multiplication.
What is the multiplication grid method?
When multiplying numbers, a textual method called the grid method is employed. Prior to multiplication, it entails dividing integers into tens and units. The box method, which involves adding numbers to boxes, is another name for the grid method of multiplication.
Prior to instructing students to perform these marginally more difficult multiplications using the grid method, you need make sure the following:
- possess a firm grasp of the times tables;
- is capable of ten times any number;
- has the ability to multiply one-digit values by multiples of 10 (for instance, 6 x).
8, 20, and so forth);
- is capable of multiplying two multiples of 10, such as 40 x 90;
— able to add four numbers, some of which are three digits, with reliability.
A bookcase had nine shelves each shelf had exactly 23 books
___= Books
Answer:
207 book
Step-by-step explanation:
9 shelves x 23 books per shelve=207 books
-6x+6=4x-24
with work, if that's alr
Answer:
x = 3
Step-by-step explanation:
-6x+6-6=4x-24-6
-6x=4x-30
-6x-4x=4x-30-4x
-10x=-30
-10x/-10=-30/-10
The radius, diameter, or circumference of a circle is given. Find the missing measure to the nearest hundredth.
d = 8 1/2in., r=?, C=?
The missing measure to the nearest hundredth is r = 2.25 in, C = 14.13 in.
What is circumference of circle?A circle's outside boundary is called the circumference and can be measured, or calculated, by using
Circumference = 2πr
where r is the radius of circle.
Now it is given that,
Diameter of circle, d = 8 1/2 in = 9/2 in
So, radius of circle, r = d/2 = 9/4 in
⇒ r = 2.25 in
Therefore,
∵ Circumference of circle, C = 2πr
∴ Circumference of circle, C = 2π*9/4
⇒ Circumference of circle, C = 14.130 in
Thus, the missing measure to the nearest hundredth is r = 2.25 in, C = 14.13 in.
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Find the number of possible outcomes for following situation.
Perry chooses from 6 colors and 2 seat designs for his new mountain bike.
The number of possible outcomes is 12.
What do we mean by permutation and combination?A permutation is an act of arranging objects or numbers in a particular order. Combinations are a method of selecting objects or numbers from a collection or group of objects in such a way that the order of the objects is irrelevant. For example, we consist of four letters: P, Q, R, and S. Every possible arrangement is a combination. However, the combinations of P, Q, R, and S are permutations.To find the possible outcomes:
Given: 6 colors and 2 seat designs.
Therefore, the number of possible outcomes is 12.
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Which set of ordered pairs (x,y)(x,y) could represent a linear function?{A}= A= {(-6, 6),(-3, 2),(0, -1),,\,(3, -5} {(−6,6),(−3,2),(0,−1),(3,−5)} {B}= B={(-9, 5),(-1, 3),(, 2),(7, 1) {(−9,5),(−1,3),(3,2),(7,1)} {C}= C= {(-9, -3),(-3, 0),(2, 3),(8, 6) {(−9,−3),(−3,0),(2,3),(8,6)} {D}= D= {(-4, -5),(0, -2),(5, 1) (9, 4)} {(−4,−5),(0,−2),(5,1),(9,4)}
From the given linear functions, the ordered pairs that represents a function is A= {(-6, 6),(-3, 2),(0, -1) (3, 5})
Linear functionsA set of ordered equation represents a linear function if the domain of the coordinates are not repeated.
For instance, the ordered pairs that is a function are the coordinates that do not have any repeated x-coordinates.
From the given linear functions, the ordered pairs that represents a function is A= {(-6, 6),(-3, 2),(0, -1) (3, 5})
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There are 63 books on the bookshelf. There
are 9 books on each shelf. How many
shelves are there?
Answer:
there are 7 shelves. 9 x 7=63
Answer:
the answer is 7 shelves
Step-by-step explanation:
63÷9=7
Need help please asap
Step-by-step explanation:
the circle standard form is
(x - h)² + (y - k)² = r²
(h, k) are the coordinates of the center of the circle.
r is the radius of the circle.
I cannot draw here, but I can describe the details.
9.
the center is therefore at (-1, 2). and the radius is 5.
to graph the circle mark the 4 points with radius distance up, down, left and right of the center.
up : (-1, 2 + 5) = (-1, 7)
down : (-1, 2 - 5) = (-1, -3)
left : (-1 - 5, 2) = (-6, 2)
right : (-1 + 5, 2) = (4, 2)
10.
the center is therefore at (3, 0). and the radius is 4.
to graph the circle mark the 4 points with radius distance up, down, left and right of the center.
up : (3, 0 + 4) = (3, 4)
down : (3, 0 - 4) = (3, -4)
left : (3 - 4, 0) = (-1, 0)
right : (3 + 4, 0) = (7, 0)
11.
we have the h, k coordinates of the center.
for the radius we need to find the distance between the center and the given point.
remember, this is via Pythagoras in a right-angled triangle
c² = a² + b²
with c being the Hypotenuse (the side opposite of the 90° angle), a and b being the legs.
for the distance between 2 points the direct distance is the Hypotenuse, and the x and y coordinate differences are the legs.
distance² = r² = (7 - 2)² + (-1 - -1)² = 5² + 0² = 5² = 25
so, the equation is
(x - 2)² + (y + 1)² = 25
12.
we have the h, k coordinates of the center.
for the radius we need to find the distance between the center and the given point.
distance² = r² = (4 - 1)² + (6 - 2)² = 3² + 4² = 9 + 16 = 25
so, the equation is
(x - 1)² + (y - 2)² = 25
The directly proportional dependence is given by the formula y=3/8x
For the formula y = 3/8x , as x increases or decreases, the value of y increases or decrease by 3/8 times of x.
We have the following statement -
'The directly proportional dependence is given by the formula y = 3/8x '.
We have to analyze this statement.
What is the meaning of direct proportionality between variables ?Directly proportional means as the value of one variable increases, the value of another variable increases at the same rate.
According to the question, we have -
y = 3/8x
Here - y is directly proportional to x. This means that as x increases or decreases, the value of y increases or decrease by 3/8 times of x.
The graph of this equation is a straight line passing through origin. Therefore - Direct proportionality is represented by a straight line graphically.
Hence, for the equation y = 3/8x , as x increases or decreases, the value of y increases or decrease by 3/8 times of x.
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Slope
1/5
y-intercept = -2
I need this in slope intercept form. Can someone help?
Answer:
y= 1/5x + (-2)
Step-by-step explanation:
Find the greatest common factor of 24, 40 and 60.
Answer:
GCF of numbers 24, 40, 60 is 4
GCF(24, 40, 60) = 4
How many solutions does the equation 12(2x+6)=6−x have?
Answer:x=0
Step-by-step explanation:
11) Each of Jeff's family, of four, buys a new phone. The total cost is $25 above or below $1200. Write
an equation that models the cost x, in dollars, of a single phone.
The equation that models the cost x in dollars of a single phone is given by 293.75 ≤ x ≤ 306.25.
What are inequalities ?
When two values are compared , an inequality represents whether one is greater than, less than, or not equal to the other.
It is given that total cost of phone is $25 above or below $1200.
This is a case of inequality.
Let's assume the cost of one phone is $x.
So cost of 4 phones will be given by 4x.
and this will be equal to total cost which is given as $25 above or below $1200.
So , the inequality is given by ;
1200 - 25 ≤ 4x ≤ 1200 + 25
1175 ≤ 4x ≤ 1225
If we divide by 4 through this inequality then ;
(1175/4) ≤ (4x/ 4) ≤ (1225/ 4)
or
293.75 ≤ x ≤ 306.25
The cost of one phone will lie between $293.75 and $306.25.
Therefore , the equation that models the cost x in dollars of a single phone is given by 293.75 ≤ x ≤ 306.25.
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(x+4) {2}+(y-6) {2} = 48 what is the radius
By interpreting the equation of the circle in standard form, we conclude that the circle (x + 4)² + (y - 6)² = 48 has a radius of approximately 6.928 units.
What is the radius of the equation of the circle?
In this question we find the equation of a circle in standard form, whose expression is described and explained below:
(x - h)² + (y - k)² = r²
Where:
(h, k) - Coordinates of the center of the circle.r - Radius of the circleAccording to the equation given in the statement, we find a circle with a center at (- 4, 6) and a radius of 6.928 units.
By interpreting the equation of the circle in standard form, we conclude that the circle (x + 4)² + (y - 6)² = 48 has a radius of approximately 6.928 units.
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State whether sentence is true or false. If false, replace the underlined word or phrase to make a true sentence.
A ₋trigonometric ratio is a ratio of the lengths of two sides of a right triangle.
Given statement 'A trigonometric ratio is a ratio of the lengths of two sides of a right triangle' is True.
In this question,
We have been given a statement 'A trigonometric ratio is a ratio of the lengths of two sides of a right triangle'
Sometimes, trigonometric ratios used to find the measures of acute angles in a right triangle.
To find the measures of acute angles in a right triangle, you need to know the measures of the two sides of the right triangle.
We determine which ratio to use depending on which sides are given. And we also use the inverse trigonometric functions to find the angle.
Trigonometric ratios are: sine, cosine, tangent, cotangent, secant, cosecant.
These ratios are abbreviated as, sin, cos, tan, cot, sec, cosec.
Therefore, given statement 'A trigonometric ratio is a ratio of the lengths of two sides of a right triangle' is True.
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Solve and graph 3|2x+2|-2x=x+3
Answer: x= -1
Step-by-step explanation:
[tex]3\left|2x+2\right|-2x=x+3\\[/tex]
Next, we find Positive and Negative Intervals!
[tex]x < -1,\:\:x\ge \:-1[/tex]
Then Last we Solve The inequality for each interval.
No Solution or x= -1
Which expressions are simplified? Pls help!!
Answer:
Only A
Step-by-step explanation:
[tex]b) \: \frac{1}{ {n}^{ - 5} } = {n}^{5} \\ \\ c) \: {n}^{6} \times {n}^{ - 8} = {n}^{ - 2} \\ \\ d) \: {n}^{7} \times {n}^{8} = {n}^{15} \\ \\ e) \: \frac{1}{ {n}^{3} } = {n}^{ - 3} [/tex]
find the value of z.
Answer:
z = 14.4
Step-by-step explanation:
RX is an angle bisector and divide the opposite side that are proportional to the other 2 sides , that is
[tex]\frac{SX}{XT}[/tex] = [tex]\frac{RS}{RT}[/tex] ( substitute values )
[tex]\frac{5}{6}[/tex] = [tex]\frac{12}{z}[/tex] ( cross- multiply )
5z = 72 ( divide both sides by 5 )
z = 14.4
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Jose has 13 1/4 cups of raspberries. He uses 7/8 cup of raspberries to make a smoothie. Jose uses the
remaining raspberries to make pancakes. If it takes 1 3/8 cups to make one pancake, how many pancakes can he make?
the number of pancakes that can be made using the remaining raspberries are 9 pancakes.
We are given that:
Total raspberries = 13 1/4 cups
Total raspberries = 53 / 4 cups
Now, he used 7 / 8 cups to make a smoothie.
So, Raspberries left = 53 / 4 - 7 / 8
Left = 99 / 8 cups
Now, for making 1 pancake Raspberries required = 1 3/8 sups
= 11 / 8 cups
So, the number of pancakes will be calculated by using division:
Number = 99 / 8 ÷ 11 / 8
Number = 99 / 11
Number = 9 pancakes
Therefore, we get that, the number of pancakes that can be made using the remaining raspberries are 9 pancakes.
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2x_____=2x10^=______ please help!!!!!!!!!!!!
We have the expression to be written as 2 × 10 = 2 x 10^ 1 = 20
What is index form?
The index form of a number can be defined as that number written as an exponential expression.
It is also said to be a single number that is raised to another number.
Given the expression;
2x _____ = 2 x 10^ 1 = ______
It is important to note that a number raised to the power 1 is that same number, so we have;
2 × 10
2 x 10^1 = 2 × 10
2 × 10 = 20
Thus, we have the expression to be written as 2 × 10 = 2 x 10^ 1 = 20
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What is the equation 2n x 2m equal to?
Answer: 2n x 2m
Step-by-step explanation:
Since the variables are different, you cannot do anything.
21. A scuba diver dives to a depth of 50 feet,
then rises 15 feet, then rises 20 feet. Write an
addition expression to describe this situation.
Then determine the sum and explain its
meaning.
Answer:
73
Step-by-step explanation:
Based on the given conditions, formulate: 20+50+15-12
Calculate the sum or difference:70+15-12
Calculate the sum or difference:85-12
Calculate the sum or difference:73
get the result:73
Answer:
50 - 15 = 35
35 + 20 = 55
Total amount of feet diven : 55 feet
Write a function rule for the direct variation in the table.
The function rule for the direct variation in the table is [tex]y = 24/x[/tex] , indirect variation ; x = 2.4.
What is direct variation?Direct variation is the change in one quantity as a result of the change in another. This suggests that if one quantity rises or falls, the other must rise or fall correspondingly as well.
The formula y = kx is used to answer direct variation questions. If finding the proportionality constant is necessary, the answer is obtained by dividing y by x.
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What are the domain and range of this relation? (-3,14),(0,7),(2,0),(9,-18),(23,-99)
The range and domain of the relation (-3,14),(0,7),(2,0),(9,-18),(23,-99) are {-3, 0, 2, 9, 23} and {14, 7, 0, -18, -99} respectively.
According to the given question.
We have a relation (-3,14),(0,7),(2,0),(9,-18),(23,-99).
As we know that, the set which contains all the first elements of all the ordered pairs of relation R is known as the domain of the relation.
And, the set which contains all the second elements of all the ordered pairs of relation R is known as the range of the relation.
Therefore, the domain of the given relation is {-3, 0, 2, 9, 23}.
And the range of the given relation is {14, 7, 0, -18, -99}.
Hence, the range and domain of the relation (-3,14),(0,7),(2,0),(9,-18),(23,-99) are {-3, 0, 2, 9, 23} and {14, 7, 0, -18, -99} respectively.
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Please help!!
1.The height of a projectile is a function of the time it is in the air. The height in feet for t seconds is given by the function h(t) = -16t2 + 96t . What is the domain of the function? What does the domain mean in the context of the problem?
2.Use the graph at right to answer the following question.
Solve for f(x) = -3
Problem 1
The domain is [tex]0 \le t \le 6[/tex] which in interval notation is [0, 6]
This is the set of t values where h(t) is positive or zero. Any other t values will make h(t) to be negative. So we ignore those t values. A negative height makes no sense.
The domain in the context of the problem means that the projectile is in the air from the time markers of t = 0 and t = 6. In short, the object is in the air for 6 seconds. It takes 6 seconds for it to hit the ground.
Here's how we can determine those t values. We plug in h(t) = 0 and solve for t.
h(t) = -16t^2 + 96t
-16t^2 + 96t = 0
-16t(t - 6) = 0
-16t = 0 or t - 6 = 0
t = 0/(-16) or t = 6
t = 0 or t = 6
======================================================
Problem 2
Draw a horizontal line through -3 on the y axis.
This horizontal line touches the blue graph at the points (-2,-3) and (2,3)
This means the inputs x = -2 and x = 2 lead to the output of y = -3
Therefore f(-2) = -3 and f(2) = -3
Answer: The solutions are x = -2 and x = 2
The movement of the progress bar may be uneven because questions can be worth more or less (including zero) depending c
Rewrite 99 + (88 +77) using the Associative Law of Addition.
O (99 +88) + 77
O (88+77) +99
O (99+77) +88
O 99 + (77 +88)
Step-by-step explanation:
The answer is 99+(77+88)
2 ___ =4
- _.
3. 9????
Brian spent 14 minutes washing the dishes. That was 35% of the total number of minutes he spent doing chores.
How many minutes did Brian spend doing chores?
Answer: I got my answer by dividing 14 by 35, then multiplying by 100.
Answer: 250 minutes.
Step-by-step explanation: You make a fraction.
Actual time / Percentage
Then you multiply that by 100.
The length of a pool is 5 more than the width. The perimeter is 96. Whats is the are of the pool.
Answer:
569,75
Step-by-step explanation:
Fit for Family offers a membership fee of
$450 for the year or the option to pay $41
per
month. How much do you save each month by
choosing the annual membership fee?
We save $3.5 each month and in total $42 by giving the annual membership fees.
What are mathematics operations?An operation is a function in mathematics that converts zero or more input values (also known as "operands" or "arguments") to a well-defined output value. The operation's arity is determined by the number of operands.Binary operations (i.e., operations of arity 2), such as addition and multiplication, and unary operations (i.e., operations of arity 1), such as additive inverse and multiplicative inverse, are the most commonly studied operations. A zero-arity operation, also known as a nullary operation, is a constant. The mixed product is an example of an arity 3 operation, also known as a ternary operation.
So,
The yearly pay is $450.The monthly payment is $41.Then, Monthly pay for a whole year:
$41 × 12 = $492Now,
$492 - $450 = $42Saving each month by giving the annual fees:
$42 ÷ 12 = $3.5
Therefore, we save $3.5 each month by giving the annual fees.
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please help. The question is attached. Do only C,D,E,F,G
Main Answer:
c. The value of x = 5 and y = 5.
d. The value of x = 1and y = 2.
e. The value of x = 10 and y = 2.
f. The value of x = 2 and y = 1.
g. The value of x=2 and y = 4.
Explanation for all parts:
A linear equation is an algebraic equation of the form y=mx+b involving a constant and a linear term.A square root of a number is a value that when multiplied by itself gives the number.Elimination method is a technique for solving a system of linear equation by eliminating the same variables.c. Given: 3y = x + 10
[tex]x^{2} +y^{2}=100[/tex]
To find: Solve the simultaneous equations.
[tex]x^{2} +y^{2}=100[/tex]
On taking square root from both sides of the equations, we get,
x + y = 10
3y = x + 10
x = 3y - 10
x - 3y = -10
By elimination method,
x - 3y = -10
x + y = 10
-----------------
-4y = -20
y = 5
On substituting the value of y = 5 in the equation x + y = 10 , we get,
x + y =10
x + 5 = 10
x = 5
Therefore, the required value of x = 5 and y = 5.
d. Given: y = 3x - 1
8[tex]x^{2}[/tex] - 2xy = 4
To find: Solve the simultaneous equations.
By substitution method,
We will substitute the value of y in equation 8[tex]x^{2}[/tex] - 2xy = 4 to get,
8[tex]x^{2}[/tex] - 2x(3x-1) = 4
8[tex]x^{2}[/tex] - 6[tex]x^{2}[/tex] +2x = 4
2[tex]x^{2}[/tex] + 2x = 4
By dividing the equation by 2 on both sides, we get,
[tex]x^{2}[/tex] + x = 2
[tex]x^{2}[/tex] + x - 2 = 0
[tex]x^{2}[/tex] + 2x - x - 2 = 0
x(x+2) -1(x+2) = 0
(x+2)(x-1) = 0
x+2 = 0 or x - 1= 0
x = -2 or x = 1
We will not consider the negative values of x.
So, x = 1.
y= 3x - 1
y = 3 × 1- 1
y = 3 - 1
y = 2
The value of x = 1and y = 2..
e. Given: x - 2y = 6
[tex]x^{2}[/tex] - 4xy = 20
To find: Solve the simultaneous equations
x - 2y = 6
x= 6 + 2y
By substitution method,
We will substitute the value of x= 6 + 2y in the equation
[tex]x^{2}[/tex] - 4xy = 20 to get,
[tex](6+2y)^{2}[/tex] - 4(6+2y)y = 20
36 + 4[tex]y^{2}[/tex] +24y - 24y - 8[tex]y^{2}[/tex] = 20
-4[tex]y^{2}[/tex] = 20 - 36
-4[tex]y^{2}[/tex] = -16
By dividing the equation by -4 on both sides, we get,
[tex]y^{2}[/tex] = 4
y = 2
So, x = 6 +2y
x = 6 + 2×2
x = 6+4
x=10
Therefore, the value of x = 10and y = 2.
f. Given: 4x - 3y = 5
[tex]x^{2} +3xy = 10[/tex]
To find: Solve the simultaneous equations.
4x - 3y = 5
4x= 5 + 3y
x = [tex]\frac{5+3y}{4}[/tex]
By substitution method,
We will substitute the value of x = [tex]\frac{5+3y}{4}[/tex] in the equation
[tex]x^{2} +3xy = 10[/tex] to get,
[tex](\frac{5+3y}{4} )^{2}[/tex] + 3[tex](\frac{5+3y}{4} )[/tex]y =10
[tex]\frac{25+9y^{2}+30y }{16}+ \frac{15y+9y^{2} }{4}[/tex] = 10
[tex]\frac{25+9y^{2}+30y+60y+36y^{2} }{16}[/tex]=10
25 + 45[tex]y^{2}[/tex] + 90y=160
By dividing the equation by 5 on both sides, we get,
5 + 9[tex]y^{2}[/tex] +18y= 32
[tex]9y^{2}[/tex] +18y - 27 = 0
By dividing the equation by 3 into both sides, we get,
[tex]y^{2}[/tex] +2y - 3 = 0
[tex]y^{2}[/tex] +3y -y - 3 = 0
y(y+3) - 1(y+3) = 0
(y+3)(y-1) = 0
y =-3 or y =1
We will not consider the negative values of x.
So, y=1.
x= [tex]\frac{5+3y}{4}[/tex]
x = [tex]\frac{5+3(1)}{4}[/tex]
x= [tex]\frac{5+3}{4}[/tex]
x= [tex]\frac{8}{4}[/tex]
x = 2
Therefore, the value of x=2 and y= 1.
g. Given: 2x+ y= 8
xy= 8
To find: Solve the simultaneous equations.
According to the equation,
2x+ y= 8
y = 8 - 2x
By substitution method,
We will substitute the value of y = 8 - 2x in the equation xy = 8 to get,
x(8-2x) = 8
8x - 2[tex]x^{2}[/tex] = 8
8x - 8 = 2[tex]x^{2}[/tex]
2[tex]x^{2}[/tex] - 8x + 8 = 0
2[tex]x^{2}[/tex] - 4x - 4x + 8 =0
2x(x - 2) - 4(x - 2) = 0
(x - 2)(2x - 4) = 0
x = 2 or 2x = 4
x= 2 or x =2
So, y = 8 - 2x
y = 8 - 2(2)
y = 8 - 4
y = 4
Therefore, the value of x = 2 and y= 4.
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