The value for expression 2/3xy² when x = -1/3 and y = 1/2 is 8.
What is an expression?
Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a statement. It's possible to multiply, divide, add, or subtract with this mathematical operation.
The given expression is 2/3xy².
The value of x is given as x = -1/3.
The value of y is given as y = 1/2.
To find the value of the expression, substitute the value of x and y in the expression -
= 2/3xy²
Expand using the power rule -
= [2/(3 × (-1/3) × (1/2)²)]
Use the arithmetic operation of multiplication -
= [2/(3 × (-1/3) × (1/4)]
= [-2/(-3/12)]
= -2/(-1/4)
The denominator will reciprocate -
= -2 × -4
= 8
Therefore, the final value is obtained as 8.
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Anna says “ if a number is divisible by 4, then is it also divisible by 2 Do you agree Explain.
What is the answer to 47-2.7?
Answer:
44.3
Step-by-step explanation:
47 - 2.7 = 44.3
Taking away 2.7 from 47 gives us 44.3.
Hope this helped!
60th term of -28 -45 -62
Answer:
-79
Step-by-step explanation:
First Identify the sequence
-28 to -45 is -17
-45 to -62 is -17
This is an Arithmetic Sequence because it is constant
(Constant ; same throughout)
Two Formulas:
a60=28 -45 -62
or
an= -17(60)-11
12in to 36in. find the percent of change
Answer:
36 -12 = 24
Step-by-step explanation:
24 / 12 × 100
= 2 × 100
= 200 %
I need help with this
Answer:
3.Ans
4 is the thousands place value in the number 524,897,123.
The value of the digit 4 would be 4,000,000.
Calculation: 4 x 1,000,000 = 4,000,000
4.Ans
The product of (6*5)*10^3 is 3000. This product has 3 zeroes.
Please help me with this question.
The limits to the function are given as follows:
a) lim x -> -5 f(x) = 10.
b) lim x -> 5 f(x) = -5.
How to calculate the limit of a function?The first step in calculating the limit of a function is calculating the numeric value of the function at the value of x which the function approaches.
As the function in this problem does not have discontinuities at the values of x = -5 and x = 5, the limits are in fact given by the numeric values at these points.
The limits are given as follows:
a) lim x -> -5 f(x) = 10. -> as the graph passes through the point (-5,10).
b) lim x -> 5 f(x) = -5. -> as the graph passes through the point (5,-5).
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Determine any data values that are missing from the table, assuming that the data represent a linear function. x y -1 2 0 3 4 2 a. Missing x:1 Missing y:2 c. Missing x:1 Missing y:6 b. Missing x:1 Missing y:5 d. Missing x:2 Missing y:5
The linear function's missing data values are x = 0 and y = 1, which is the right response (B).
What are linear function's ?A straight line on the coordinate plane is represented by a linear function.
The formula for a linear function is f(x) = mx + b, where m and b are real values.
Isn't it resembling the slope-intercept form of a line, represented by the equation y = mx + b.
When given as a graph, information about a function is assumed to be linear if the graph is a line.
If the function's details are provided in algebraic form, then f(x) = mx + b indicates that the function is linear.
According to our question-
Using two specified pairs of points from the table, (-9, 3) and (-6, 2), one may calculate the slope as follows:
Let
x₁ = -6, y₁ = 2
x₂ = 95, y₂ = 3
Slope (m) equals (3 – 2)/(-9 – (-6))
Slope (m) equals 1/-3, or 1/3.
By substituting (x, y) = (-9, 3) and m = -1/3 into y = mx + c, it is possible to find c:
⇒ 3 = -1/3(-9) + c
⇒ 3 = 3 + c
⇒ 3 - 3 = c
⇒ c = 0
Change y = mx + c to m = -1/3 and c = 0.
⇒ y = -1/3x
Now, calculate the values of the missing data using the equation:
Please use y = 0.
Hence, x would be:
⇒ 0 = -1/3x
⇒ x = 0
Replace x with -3,
Y then would be:
⇒ y = -1/3(-3) (-3)
⇒ y = 1
Hence, The linear function's missing data values are x = 0 and y = 1, which is the right response (B).
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You can make 5 gal of liquid fertilizer by mixing 12 tsp of powdered fertilizer with water. Represent the relation between the teaspoons of powder used and the gallons of fertilizer made using a table, an equation, and a graph. Is the amount of fertilizer made a function of the amount of powder used?
So on solving the provided question, we can say that by equation , y = 5/8x; it makes a vertical line.
What is equation?A mathematical equation is a formula that joins two statements and uses the equal symbol (=) to indicate equality. A mathematical statement that establishes the equality of two mathematical expressions is known as an equation in algebra. For instance, in the equation 3x + 5 = 14, the equal sign places the variables 3x + 5 and 14 apart. The relationship between the two sentences on either side of a letter is described by a mathematical formula. Often, there is only one variable, which also serves as the symbol. for instance, 2x – 4 = 2.
Let y be the number of gallons of fertilizer produced by combining x tsp of fertilizer powder.
5 litres of liquid fertilizer are created by combining 8 tsp of fertilizer powder.
Therefore, the amount of liters of liquid fertilizer produced by combining 1 tsp of fertilizer powder = 5/8
gallons of LF by mixing x tsp of powder fertiliser = 5/8x
the required equation is => y = 5/8x
so by graph it makes a vertical line.
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In this figure, sin < ___ and cos
42 , 16 values of sin and cos
What is sin formula?Let's review some information regarding the sin function before learning the sin formula. The sine function, often known as the sin function, is a periodic function in trigonometry. The ratio of the hypotenuse's length to the perpendicular's length in a right-angled triangle is another way to describe the sine function. Sin is a periodic function that has a period of 2 and a domain and range of (, ), respectively. To determine the sides of a triangle, use the sin formula.
The Sin Formula: What Is It? The ratio of the perpendicular of a right-angled triangle to the hypotenuse is known as the sine of the angle. The following is the sin formula: sin = Perpendicular / Hypotenuse
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as cordenadas do vertice da funcao y=x2-2x-3
Para encontrar as coordenadas do vértice de uma função do tipo y = x² - 2x - 3, podemos seguir os seguintes passos:
Calcular o valor da coordenada x do vértice: para isso, precisamos encontrar o valor de x quando o coeficiente do x na função é igual a zero. Neste caso, temos x² - 2x - 3 = 0. Então, para encontrar x, podemos factorizar esse polinômio e encontrar as raízes: (x-3)(x+1) = 0. Isso nos dá x = 3 ou x = -1. Como estamos procurando o vértice, que é o ponto mais alto ou mais baixo da parábola, descartamos x = -1 e ficamos com x = 3.
Calcular o valor da coordenada y do vértice: agora que temos o valor de x, podemos substituí-lo na função original e calcular o valor de y. Neste caso, temos: y = (3)² - 2(3) - 3 = 9 - 6 - 3 = 0.
Portanto, as coordenadas do vértice da função y = x² - 2x - 3 são (3, 0).
Answer:
Step-by-step explanation:
(x) = x²-2x-3.
a=1 b=-2 c=-3.
Xv = -b/2a = -(-2)/2 = 1.
Yv = -Δ/4a Δ =(2²-(4.(-3))) = 16 -16/4 = -4
Vertex ( 1 , -4 )
Differentiating
f(x) = x²-2x-3.
f '(x) = 2x-2
2x-2 = 0
x=1. Xv = 1.
f(1) = x²-2x-3.
1-2-3 = -4. Yv = -4.
Jaden has learned to play 18 1⁄4 of the measures for Fur Elise on the piano. If the song is composed of 108 measures, how many more measures does she have to learn?
Answer:108-8 1/4=89 3/4 Jaden has 89 3/4 measures they still need to learn
Step-by-step explanation:
Answer: 89 3/4
Step-by-step explanation: Jaden played 18 1/4 of the measures and the total of Fur Elise is 108 measures. If you do 108 - 18 1/4 it would be 89 3/4. We did this because the total was 108 and we wanted to know how much of fur elise is left after we played 18 1/4.
How many grams of fluorine are required to produce 20.0 grams of FeF3?
Fe + F2 → FeF3
10.1 g of fluorine is required to produce 20.0 grams of FeF3
first, we have to balance the equation:
2Fe+3F₂⇒2FeF₃
The molar mass of FeF₃ is 112.84g/mol. so the num of mol(n) of FeF₃ present in 20.0g of mass is calculated as shown below:
n=20.0g/112.84g/mol
n=0.1772mol
According to the balanced equation on the macroscopic scale, 2 mol of FeF₃ is produced from 3 mol of F₂.
so, 0.1772 mol of FeF₃ is produced from X mol of F₂. where X is calculated as shown below:
X=3 mol/2mol*0.1772 mol
X=0.2658 mol
Hence, 0.2658 mol of F₂ is required. The molar mass of F₂ is 38.0g/mol
so, the mass of 0.2658 mol of F2 is calculated as:
m=0.2658 mol*38.0g/mol
m=10.1g
Hence, 10.1 g of fluorine is required.
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Which transformation will result in an image that is congruent to its pre-image? (x, y) → (2x, −2y) (x, y) → (x, y − 2) (x, y) → (−x, 2y) (x, y) → (−2x, y − 2)
(x,y) --> (x, y-2)
=======================================================
Explanation:
Choice A can be ruled out because of the jump from x to 2x, and from y to 2y. This is a dilation with a scale factor 2. Meaning the preimage enlarges to a bigger image. Specifically the larger image has side lengths twice as long as the smaller preimage. The larger image of course cannot possibly be congruent to the smaller preimage. Congruent figures must have the same corresponding side lengths.
We'll come back to choice B.
Choice C and choice D are ruled out for similar reasoning as choice A was eliminated.
-------------
To summarize the previous section: We ruled out choices A, C, and D. The only thing left is choice B.
Choice B is a translation. The jump from y to y-2 means we shift the point 2 units down. There is no left or right shifting because x stays the same.
For example, the point (5,12) moves to (5,10).
Notice that dilation is not being applied for choice B.
With any geometric translation, aka shifting, the side lengths will remain intact. Something that is 5 units long will stay 5 units long. No amount of shifting will change the distance.
Therefore, a translation preserves distances and lengths. We consider it a rigid transformation. This is why choice B will have the preimage congruent to the image.
Answer:B) (x, y) → (x, y − 2)
Step-by-step explanation:
Simplify the expression: -2+2g-(3g+4)
Answer:
- g - 6----------------------------
Given expression:
-2 + 2g - (3g + 4)Simplify it in steps:
-2 + 2g - (3g + 4) = - 2 + 2g - 3g - 4 = (2 - 3)g - 6 = - g - 6Answer:
[tex] \sf \: - g - 6[/tex]
Step-by-step explanation:
The expression is,
→ -2 + 2g - (3g + 4)
Let's simplify the expression,
→ -2 + 2g - (3g + 4)
→ -2 + 2g - 3g - 4
→ (-3g + 2g) + (-2 - 4)
→ (-g) + (-6)
→ -g - 6
Hence, the answer is -g - 6.
In June, Lupita saved $115 for retirement. In July, she saved $165. To the nearest percent, what was the increase in Lupita's retirement savings from June to July?
The increase in Lupita's retirement savings from June to July to the nearest percentage is 44%.
What is percentage?
A value or ratio that may be stated as a fraction of 100 is referred to as a percentage in mathematics. If we need to calculate a percentage of a number, we should divide it by its entirety and then multiply it by 100. The percentage therefore refers to a part per hundred.
It is given that the initial amount of money Lupita had in June is $115
In July the amount of money Lupita saved increased to $165
We are asked to find this increase in money as a percentage.
Increase in percentage
= {(Final amount of money - Initial amount of money) / Initial amount of money } × 100
= {(165 - 115) / 115 } × 100 = 43.48%. ≈ 44%
Therefore the increase in amount of money saved as percentage is 44%.
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can someone help me pls
All the correct expression are;
⇒ 2x + 6 = 2
⇒ 2(x - 4) = 6x
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Now, We have to check all the expression which has x = - 2 as a solution.
So, For first expression;
⇒ 2x + 6 = 2
Put x = -2;
LHS = 2×- 2 + 6
= - 4 + 6
= 2
= RHS
Hence, This expression has a solution x = - 2
For second expression;
⇒ 2(x - 4) = 6x
Put x = -2;
LHS = 2×(- 2 - 4)
= 2 × - 6
= -12
RHS = 6x
= 6×-2
= - 12
Hence, This expression has a solution x = - 2
For third expression;
⇒ 3x + 1/2 = 1/4x + 6
Put x = -2;
LHS = 3×-2 + 1/2
= - 6 + 1/2
= - 11/2
RHS = 1/4x + 6
= 1/4 × - 2 + 6
= - 1/2 + 6
= 11/2
Hence, This expression does not a solution x = - 2.
So, For fourth expression;
⇒ 7 - 3x = 5x + 11
Put x = -2;
LHS = 7 - 3×-2
= 7 + 6
= 13
RHS = 5x + 11
= 5×-2 + 11
= - 10 + 11
= 1
Hence, This expression does not a solution x = - 2.
So, For fifth expression;
⇒ 3x + 15 = 2x + 9
Put x = -2;
LHS = 3×- 2 + 15
= - 6 + 15
= 9
RHS = 2x + 9
= 2×-2 + 9
= - 4 + 9
= 5
Hence, This expression does not a solution x = - 2.
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Rewrite (2x + 8) + 4 using the associative property. Then simplify.
Answer:
2x+12
Step-by-step explanation:
We can re-write (2x+8)+4 using the associative property of addition. The associative property states that you can move around the parenthesis in an addition problem.
We can write (2x+8)+4 as 2x+(8+4).
2x+(8+4) = 2x+12.
What is the 10th term of the arithmetic sequence defined by the formula
The 10th term of the arithmetic sequence is T₁₀ = a + 9d. a is the first term and d is the common ratio.
What is a sequence?
A sequence in mathematics is an enumerated collection of items in which repetitions are permitted and order is important. It has members, just like a set. The length of the sequence is defined as the number of items.
An arithmetic sequence follows a pattern.
Arithmetic progression or arithmetic sequence is a number sequence in which the difference between subsequent terms is constant.
The formula for nth term of the sequence is
Tn = a + (n - 1)d
Where a is the first term, d is the common ratio, and n is the number of terms.
Putting n = 10 in Tn = a + (n - 1)d
T₁₀ = a + (10- 1)d
T₁₀ = a + 9d
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Fill out the blank. Use the corresponding theorems
On solving the provided question we can say that from the provided quadrilateral ABCD, ∠ BAD and ∠BCD are supplementary, ∠ABC and ∠ADC are supplementary.
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.
from the provided quadrilateral ABCD,
∠ BAD and ∠BCD are supplementary,
∠ABC and ∠ADC are supplementary.
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Johns snowmobile weighs 0.3 tons. Mikes snowmobile weighs 500 pounds. What is the difference in the weights of the two vehicles in pounds?”
Since the Johns snowmobile weighs 600 pounds, the weight difference between the two vehicles is 100 pounds.
what is proportionality ?The term "proportionate" refers to relationships that always have the same ratio. For instance, the average number of apples per tree influences how many trees there are in an orchard and how many fruits there are in a harvest of apples. A linear relationship between two numbers or variables is referred to in mathematics as being proportionate. In the same way as the first quantity doubles, so does the other. The other decreases as well when one of the variables is reduced to 1/100th of its previous value.
When two quantities are proportional, it means that when one rises, the other rises as well and that the ratio between the two quantities is constant at all values. As an example, consider a circle's diameter and circumference.
given
2000 pounds make up a ton.
Snowmobile owned by John weighs 600 pounds or 0.3 tons.
The difference between Mike's snowmobile's 500 and 600 pound weights is 100 pounds.
= 600 - 500 = 100 pounds
Since the Johns snowmobile weighs 600 pounds, the weight difference between the two vehicles is 100 pounds.
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The height of a parallelogram is 4.5 cm. The base is twice the height. What is the area
Answer: 40.5 cm.
Step-by-step explanation:
first the formula for a parallelogram is base times height and we know the height is 4.5 cm and the base is twice the height and 4.5+4.5=9 and then 9x4.5= 40.5
A sequence is shown below.
8.0, 6.5, 5.0, 3.5, . . .
In the recursive formula for the sequence, if an=−4.0 , what is the value of an+1 ?
A
–2.5
B
–5.5
C
–6.0
D
–3.0
The value of the sequence aₙ₊₁ is -5.5
How to determine the value of the sequenceThe definition of the sequence is given as
8.0, 6.5, 5.0, 3.5, . . .
The above definitions imply that we simply subtract 1.5 from the previous term to get the current term
Using the above as a guide,
So, we have the following representation
aₙ₊₁ = aₙ - 1.5
From the question, we have
aₙ = -4.0
Substitute the known values in the above equation, so, we have the following representation
aₙ₊₁ = -4.0 - 1.5
Evaluate
aₙ₊₁ = -5.5
Hence, the value of aₙ₊₁ is -5.5
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Use tape diagrams to solve these ratio problems.
1. The sport court donated helmets and
footballs to the youth club in the ratio 3:7.
There were 60 pieces of sports equipment
altogether. How many more footballs were
donated than helmets?
24 more footballs were donated than helmets in the given ratio problem.
What is ratio?Ratio refers to the quotient of two values. The expression a:b or a/b can be used to represent the ratio of a to b. A is the antecedent and b is the consequent in both scenarios. Every time we make comparisons, ratios appear.
For simplicity, they are typically expressed in the simplest terms. In a school with 1,000 students and 50 teachers, there are 20 students for every teacher.
The golden ratio of classical architecture is an example of an aspect ratio, which is the ratio of a rectangle's width to height. A proportion is an equation that results from setting two ratios equal to one another.
Lets 3x be the no. of helmet and 7x be football distributed.
total pieces = 3x + 7x
3x + 7x = 60
10x = 60
x = 60/10
x = 6
3x = 3(6) = 18
7x = 7(6) = 42
Difference = 42 - 18
= 24
Thus, 24 more footballs were donated than helmets in the given ratio problem.
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The perimeter of the rectangular base of a monument is 230.5 feet. If the width is equal to its length, what are the dimensions of the base?
The width of the base is ____ feet
The length of the base is ____ feet
The width of the base is __57.625__ feet
The length of the base is __57.625__ feet
What is rectangle?A rectangle is a closed two-dimensional figure with four sides. The opposite sides of a rectangle are equal and parallel to each other and all the angles of a rectangle are equal to 90°.
Given,
Perimeter of the rectangular base of a monument is 230.5 feet.
width is equal to its length
Perimeter of rectangle = 2 (length + width)
230.5 = 2 (length + length)
4 length = 230.5
length = 230.5/4
length = 57.625 feet
thus, width = 57.625 feet
Hence,
57.625 feet is the length of rectangular base.
57.625 feet is the width of rectangular base.
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What the slope of the line
Answer:
slope = - [tex]\frac{8}{5}[/tex]
Step-by-step explanation:
calculate the slope m using the slope- formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (- 1, 4) and (x₂, y₂ ) = (4, - 4) ← 2 points on the line
m = [tex]\frac{-4-4}{4-(-1)}[/tex] = [tex]\frac{-8}{4+1}[/tex] = [tex]\frac{-8}{5}[/tex] = - [tex]\frac{8}{5}[/tex]
What is 8 times y to the power of 3 times 3/4
Answer:
[tex] \sqrt{1693} [/tex]
Find the slope of a line perpendicular to the line 4x-3y=12
The slope of the line perpendicular to 4x-3y=12 is:
The slope of a line perpendicular to the original line is then the negative reciprocal of 4/3, or -3/4.
What is reciprocal?Reciprocity is a reciprocal exchange of goods, services, or privileges between two parties. It is often used in business transactions and in politics to create beneficial relationships and agreements between parties.
The slope of a line perpendicular to 4x-3y=12 is calculated by finding the negative reciprocal of the slope of the original line. To find the slope of the original line, we need to rewrite the equation in the form y = mx + b, where m is the slope.
In this case, we can rewrite the equation as:
3y = 4x - 12
Yielding the slope of the original line as m = 4/3.
The slope of a line perpendicular to the original line is then the negative reciprocal of 4/3, or -3/4.
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Please Help!!! Find the equation using slope-intercept form
Y-intercept = 4
Point: (2,3)
The equation of the line in slope intercept form is y = - 1 / 2 x + 4.
How to represent equation in slope intercept form?The equation of a line can be represented in slope intercept form as follows:
y = mx + b
where
m = slopeb = y-interceptTherefore, the equation of the line passes through the points (2, 3) and the y-intercept is 4.
Hence,
y = mx + 4
let's find slope using (2, 3)
3 = 2m + 4
3 - 4 = 2m
2m = -1
divide both sides by 2
m = - 1 / 2
Therefore, the equation of the line is y = - 1 / 2 x + 4.
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Which data set matches the line plot
Answer: The fourth data set (bottom right corner).
Step-by-step explanation: In the graph shown the dots represent a value in the data set. In the graph, there are 4 data sets above 2 meaning that there should be 4 values of 2 in the data set. A quick scan will show that the only logical answer is the fourth set since this is the only set with 4 2s. You can repeat this process for the rest of the dots to check your work.
Intro to circles: circumference
PLEASE HELP
Therefore , the solution of the given problem of circumference of the given figure is 15.7 ft.
what is mean by circumference?The circumference of a circle or other curved geometric object refers to length. It is the boundary across any two-dimensional circular surface measured linearly in one dimension.
Here,
in the given question
first find the length of the diameter
in the figure
Perpendicular = 3ft
Base = 4ft
using Pythagoras rule
(hypotenuse)
(base)2 + (perpendicular)2
(hypotenuse)2=42+32
(hypotenuse)2=16+9
(hypotenuse)2=25
hypotenuse = √25
hypotenuse = 5
in the given figure hypotenuse diameter of the circle
radius(r) =
diameter
== 2.5
circumference of the circle is given by
circumference = 2πr
circumference = 2*3.14 * 2.5
circumference = 15.7ft
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