The hydronium-ion concentration of a 0.210 M oxalic acid (H₂C₂O₄) solution is approximately 1.06 × 10⁻² M.
To find the hydronium-ion concentration, follow these steps:
1. Determine the initial concentration of oxalic acid (H₂C₂O₄) which is 0.210 M.
2. Since oxalic acid is a diprotic acid, it has two dissociation constants, Ka1 (5.6 × 10⁻²) and Ka2 (5.1 × 10⁻⁵).
3. For the first dissociation, H₂C₂O₄ ⇌ H⁺ + HC₂O₄⁻, use the Ka1 to find the concentration of H⁺ ions.
4. Create an ICE table (Initial, Change, Equilibrium) to represent the dissociation of H₂C₂O₄.
5. Write the expression for Ka1: Ka1 = [H⁺][HC₂O₄⁻]/[H₂C₂O₄].
6. Use the quadratic formula to solve for [H⁺].
7. The resulting concentration of H⁺ (hydronium-ion) is approximately 1.06 × 10⁻² M.
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[Algebra, polynomials] I'd like help with further explanation with what the image is telling me. I understand that you find the GCF of each term, but for the question I don't know why the GCF of the exponents are 3. I thought 4 would be the GCF. I don't think I learned how to find GCF properly.
As for the second image, I just have no clue on how to do it. I don't want just the answer. Anyone good with math please help :)
Answer: For the GCF one, the GCF would be [tex]3y^{3}[/tex] because you are factoring from both [tex]15y^{4}[/tex] and [tex]12y^{3}[/tex], the reason it cannot be [tex]3y^{4}[/tex] is because that exponent value exceeds the exponent value of [tex]12y^{3}[/tex].
Step-by-step explanation:
So when you find a greatest common factor (GCF) you are basically trying to simplify the expression by extracting numbers to put it into its simplest form. The GCF of 15 and 12, is 3. And the GCF of the exponents would be [tex]y^{3}[/tex] .
Examine the triangle below, solve for x, rounded to two decimal places.
HELP PLEASE ANYONE
The length of the perpendicular is approximately 11.31 units, rounded to two decimal places.
How to find the perpendicular?Given that in a right angle triangle, the hypotenuse is equal to 16 and the angle is 45, we can use the sine function of the triangle to find the length of the perpendicular side (also known as the opposite side). The sine function of an angle in a right triangle is defined as the ratio of the opposite side over the hypotenuse.
sin(theta) = opposite / hypotenuse
So, you can use the following equation to find the opposite side:
opposite = sin(theta) * hypotenuse
Plugging in the given values:
opposite = sin(45) * 16
opposite = 0.7071067811865476 * 16
opposite = 11.313708498984761
The length of the perpendicular is approximately 11.31 units, rounded to two decimal places.
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Alec and Ardella graphing soccer plays. They call The center of soccer field (0,0). they both Start at point (2,3). Alec runs four units to the left and two units up. Ardella Runs four units to the left and seven units down which graph below shows the position after a run?
Graph B shows the position of Alec and Ardella after a run.
What is Translation?Translation is a type of transformation of geometrical figures. After translation, the original figure is shifted from a place to another place without affecting it's size.
Translation can be done upwards or downwards which changes the value of y. And if the translation is towards left or right, x coordinate changes.
Starting point of both Alec and Ardella = (2, 3)
Alec runs four units to the left and two units up.
(2, 3) becomes (2 - 4, 3 + 2) = (-2, 5)
Ardella runs four units to the left and seven units down.
(2, 3) becomes (2 - 4, 3 - 7) = (-2, -4)
These points are marked on graph B.
Hence the position of Alec and Ardella after the run are marked in graph B.
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A manufacturer of chocolate chips would like to know whether its bag filling machine works correctly at the 447 gram setting. Based on a 24 bag sample where the mean is 444 grams and the standard deviation is 10, is there sufficient evidence at the 0.1 level that the bags are underfilled or overfilled? Assume the population distribution is approximately normal.
Step 2 of 5: Find the value of the test statistic. Round your answer to three decimal places.
The value of the test statistic is given as 1.341
How to solve for the test statisticWe will solve for the test statistic through the use of the following data. We have the level of significance as 0.1, the standard deviation is given as 10, sample = 24, mean = 444
test statistic is solved with the formula: (x - µ )/SE =
hence we would have: ( 447 - 444 ) / 2.2371 = 1.341
Therefore the test statistics is given as 1.341
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A triangle ha two perpendicular ide that are the ame length. Which two term decribe the triangle?
The two terms that describe the triangle are isosceles and right triangle. An isosceles triangle has two sides of equal length, and a right triangle has one 90-degree angle.
An isosceles triangle is a triangle with two sides of equal length and two angles of equal measure. The two equal sides are called the legs, and the third side is called the base. The two equal angles are called base angles and are located opposite the two legs. The point where the two legs meet is called the vertex. Isosceles triangles have many interesting properties, including the fact that they have two lines of symmetry and the angles opposite each leg are equal. The triangle is also isosceles if its base angles are equal.
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Melissa wants to make a table representing the area of her vegetable garden for a variety of different lengths of the
tomato patch. She uses her area expression to create the table.
Complete the table by typing the correct answer in each box. Use numerals instead of words. Do not round your
decimal answers.
Will mark brainliest!!!
The correct numerical values that should be used in completing Melissa's table are:
13√2 or 18.384776 feet.42.25 square feet.12.13466 feet.49 square feet.How to calculate the area of a square?Side by Side = Area of a Square. A square's area is therefore Side2 square units, and its perimeter is 4 side units. The surface of a shape's surface is measured by its area. The length and width of a rectangle or square must be multiplied to determine their respective areas. A has a perimeter of x by y.Mathematically, the area of a square can be calculated by using this formula;
A = x²
Where:
A is the area of a square.
x is the side length of a square.
Substituting the given parameters into the formula, we have;
338 = x²
x = √338
x = √2 × √169
x = 13√2 or 18.384776 feet.
For row 2, we have:
A = 6.5²
A = 42.25 square feet.
For row 3, we have:
147.25 = x²
x = √147.25
x = 12.13466 feet.
For row 4, we have:
A = 7²
A = 49 square feet.
We can determine that Melissa's vegetable garden is square-shaped from the data in the table displayed in the image below.
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What is the approximate
side length of the square?
3.0 units
3.5 units
4.2 units
4.9 units
Answer:4.2
Step-by-step explanation:
What is the degree of the polynomial 7x³ 5x 4x³ 2x²?
The degree of the polynomial 7x³ 5x 4x³ 2x² is 5.
This can be calculated using the formula Degree of polynomial = Highest Degree of the Variable. In this case, the highest degree of the variable is 3, so the degree of the polynomial is 3.
To calculate the degree of the polynomial, we first need to determine the degree of each term. The degree of each term is determined by the highest power of the variable. For example, 7x³ has a degree of 3, 5x has a degree of 1, 4x³ has a degree of 3, and 2x² has a degree of 2.
So, when we add up all the degrees of the terms, we get 3 + 1 + 3 + 2 = 9. The highest degree among these terms is 3, so the degree of the polynomial is 3. Therefore, the degree of the polynomial 7x³ 5x 4x³ 2x² is 5.
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7 of 8
→
The area of a circle, in terms of π, is 100
π m².
Find the value of the diameter.
d = 0
m
Answer:
look it up broski
Step-by-step explanation:
Given EP = FP and GQ = FQ, what is the perimeter of ΔEFG?
Answer:
perimeter = 34
Step-by-step explanation:
given EP = FP and GQ = FQ , then
4y + 2 = 2x ( subtract 2x from both sides )
4y - 2x + 2 = 0 ( subtract 2 from both sides )
4y - 2x = - 2 → (1)
and
4y + 4 = 3x - 1 ( subtract 3x from both sides )
4y - 3x + 4 = - 1 ( subtract 4 from both sides )
4y - 3x = - 5 → (2)
Solve the 2 equations simultaneously
multiplying (2) by - 1 and adding to (1) will eliminate y
- 4y + 3x = 5 → (3)
add (1) and (3) term by term to eliminate y
0 + x = 3
x = 3
substitute x = 3 into (1) and solve for y
4y - 2(3) = - 2
4y - 6 = - 2 ( add 6 to both sides )
4y = 4 ( divide both sides by 4 )
y = 1
thus x = 3 and y = 1
PQ = x + 2y = 3 + 2(1) = 3 + 2 = 5
PQ is the mid segment of Δ EFG and is half the length of GE , then
GE = 2 × 5 = 10
the perimeter (P) is the sum of the 3 sides , that is
P = FQ + QG + GE + EP + PF
= 3x - 1 + 4y + 4 + 10 + 4y + 2 + 2x
= 5x + 8y + 11
= 5(3) + 8(1) + 11
= 15 + 8 + 11
= 34
Which sets of three numbers could represent the lengths of the sides of a right triangle? Choose the two correct answers. A. 27,35,37 - B. 20,21,29 - C. 7,24,25 - D. 8,12,14
Using the Pythagorean theorem we know that (B) 20,21,29 can represent the length of sides of the right triangle.
What is the Pythagorean theorem?According to the Pythagorean Theorem, the squares on the hypotenuse of a right triangle, or, in conventional algebraic notation, a2 + b2, are equal to the squares on the legs.
Now, calculate using the Pythagorean theorem as follows:
A. 27,35,37
37² = 27² + 35²
1,369 ≠ 729 + 1,225
FALSE
B. 20,21,29
29² = 21² + 20²
841 = 441 + 400
841 = 841
TRUE
*(We don't need to solve further as we got the answer.)
Therefore, using the Pythagorean theorem we know that (B) 20,21,29 can represent the length of sides of the right triangle.
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Express 12^{\frac{1}{2}}12
2
1
in simplest radical form.
25/2 is simplest form of fraction.
In math, what is a fraction?
An element of a whole is a fraction. In mathematics, the number is represented as a quotient, where the numerator and denominator are divided. Both are integers in a simple fraction.
Whether it is in the numerator or denominator, a complex fraction contains a fraction. The numerator and denominator of a correct fraction are opposite each other. The Latin word fraction, which meaning "to break," is where we get the English word fraction.
Fraction = 12 1/2
= 25/2
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PLEASE HELP ME! :(………..
Therefore, as a result of congruency along the line DE, one triangle is simply the other triangle reflected and DE = 1/2CB is proven.
What is Congruency?When two shapes or items are similar in shape, or when one is a perfect mirror of another and is similar in size and shape, they are said to be congruent in geometry. Two forms are congruent if their dimensions match. It is also true that mirror representations of two forms are the same if different systems are congruent. Objects with exact matching dimensions and shapes are referred to be matches. The forms hold true regardless of rotation, flipping, or reversal. Use the to create two circles.
Here,
When ΔABC and ΔDEF are used,
∠ABC = ∠ DEF (given)
AB = DE, and (same length)
∠BAC = ∠FED (same angle)
The ΔABC and ΔDEF triangle is similar
Thus , as there are similar we can say that:
=> DE = 1/2CB
As a result, along the line DE, one triangle is simply the other triangle reflected and DE = 1/2CB is proven.
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What is the additive inverse of 4 /- 9?
The additive inverse of 4 /- 9 is 9 /- 4. This means that if you add 4 /- 9 and 9 /- 4 together, the result is 0.
The additive inverse of a number is the number that, when added to the original number, will result in a sum of 0. In other words, it is the opposite of the original number. For example, the additive inverse of 4 /- 9 is 9 /- 4. Adding 4 /- 9 and 9 /- 4 together will result in a sum of 0. This is because 4 /- 9 means -4 + 9 and 9 /- 4 means -9 + 4. When these two numbers are added together, the result is -4 + 4 which is 0. Additive inverses are often used in algebra and calculus to simplify equations and find solutions to problems. For example, if you have an equation with two unknowns and you know the value of one of the unknowns, you can use the additive inverse to find the value of the other unknown. This is because adding the two unknowns together will result in 0, and subtracting the known value from 0 will give you the value of the unknown.
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Identify the center of dilation.
-8 -4
8
-4
-8
ty
8
x₁
X
Therefore , the ratio of the triangles ABC and XYZ's corresponding sides will therefore be the same.
Describe the triangle.A triangle is regarded as both a polygon since it has 4 elements or segments. It is a basic geometric form. Triangle ABC denotes a triangle having angles A, B, or C. Therefore, in Euclidean geometry, a single planes and square are produced whenever sides are not collinear. A triangle is a polygon if it has three parts and three corners. The points where a triangle's three sides come together are at its corners. The three triangular angles add up to 180 degrees.
Here,
An dilation is a change that produces an image that is smaller but still exactly the same shape also as original. A particular degree of stretching or contraction is possible for the initial figure.
We can see that in the problem, a 5x dilatation causes ABC to constrict to produce XYZ.
As a result, the triangles ABC or XYZ will have the same ratio of their corresponding sides.
A/B/C/D = A/C/X/Y/Z = 5
The ratio of the adjacent angles of the triangle ABC and XYZ will therefore be the same.
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Can someone help me understand what this means
Answer:
∠C = 20° & ∠B = 40°
Step-by-step explanation:
let angle c be x
A.T.Q ∠B = 2x
Using angle sum property of triangle
∠A + ∠B + ∠C = 180
120° + 2x + x = 180
3x = 60
x = 20°
∴ ∠C = 20
∠B = 40
Answer:
∠ B = 40° , ∠ C = 20°
Step-by-step explanation:
the 3 angles in the triangle sum to 180° , that is
∠ A + ∠ B + ∠ C = 180° ( substitute ∠ B = 2 ∠C )
∠ A + 2 ∠ C + ∠ C = 180°
120° + 3 ∠ C = 180° ( subtract 120° from both sides )
3 ∠ C = 60° ( divide both sides by 3 )
∠ C = 20°
∠ B = 2 × ∠ C = 2 × 20° = 40°
In the problem on the previou page, uppoe Alex wanted to know how many week it would take him to work 51 hour. Alex work 3 hour a day and 4 day a week. 1. What are you aked to find?
2. What i a good plan for olving the problem?
3. Doe your anwer make ene? Explain
It will take time Alex 4.25 weeks to work 51 hours, as 51 hours can be broken down into 4.25 weeks of 12-hour work weeks.
1. You are asked to find out how many weeks it would take Alex to work 51 hours.
2. A good plan for solving the problem is to divide the number of hours Alex needs to work (51) by the number of hours he works each day (3) and each week (12). This will give you the total number of weeks it will take Alex to work 51 hours.
3. Yes, the answer makes sense. Dividing 51 by 12 gives the total number of weeks it will take Alex to work 51 hours (4.25 weeks). This is because 51 hours can be broken down into 4.25 weeks of 12-hour work weeks.
It will take time Alex 4.25 weeks to work 51 hours, as 51 hours can be broken down into 4.25 weeks of 12-hour work weeks.
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Figure out the total percentages for the following
The percentage of healthy Americans becoming infected, hospitalizations, and death will be 16.67%, 0.267%, and 2.34%, respectively.
What is the percentage?The amount of any product is given as though it was a proportion of a hundred. The ratio can be expressed as a quarter of 100. The phrase % translates to one hundred percent. It is symbolized by the character '%'.
The percentage is given as,
Percentage (P) = [Final value - Initial value] / Initial value x 100
There are 48 million cases of foodborne illness (FBI) per year. That is the equivalent of 1 in 6 Americans. Each year these illnesses result in about 128,000 hospitalizations and 3,000 deaths.
The percentage of healthy Americans becoming infected is given as,
P = (1/6) x 100
P = 16.67%
The percentage of hospitalizations will be given as,
P = (128,000 / 48,000,000) x 100
P = 0.267%
The percentage of death will be given as,
P = (3,000 / 128,000) x 100
P = 2.34%
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Kat is painting the edge of a triangular stage prop with reflective orange paint. The lengths of the edges of the triangle are (3x -4) feet, (x-1) feet, and (2x-15) feet. What is the perimeter of the triangle if x = 4? O 16 feet O 40 feet O 76 feet O 80 feet.
The perimeter of the triangle will be 40 feet. Then the correct option is C.
What is the triangle?The polygonal shape of a triangle has a number of sides and three independent variables. Angles in the triangle add up to 180°.
The perimeter of the triangle is determined by adding together all of its sides.
The lengths of the edges of the triangle are (3x - 4) feet, (x² - 1) feet, and (2x² - 15) feet.
The perimeter of the triangle is given as,
P = 3x - 4 + x² - 1 + 2x² - 15
P = 3x² + 3x - 20
If the value of x is 4. Then the perimeter is given as,
P = 3(4)² + 3(4) - 20
P = 48 + 12 - 20
P = 40 feet
The perimeter of the triangle will be 40 feet. Then the correct option is C.
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The correct expressions are given below.
The lengths of the edges of the triangle are (3x - 4) feet, (x² - 1) feet, and (2x² - 15) feet.
What is a 2x3 ratio file?
The information about 2 x 3 ratio file is given below.
What is 2 x 3 ratio?
In the rectangle, a grid of squares measuring 2 inches high by 3 inches wide can fit, and 4 inches high by 5 inches wide can.
The most popular aspect ratio for digital Single Lens Reflex (dSLR) cameras is 2x3, which was inspired by the vintage 35mm film format, in which the negative was 24x36mm in size.
24x36 can be reduced to 2x3 or 2:3. In this aspect ratio, print sizes include 4x6, 8x12, 10x15, 12x18, 16x24, 20x30, and so forth.
An image with a 2:3 aspect ratio, for instance, would be 2 inches high by 3 inches wide (two-to-three).
When you order prints from digital files, the size of the digital image is typically adjusted to fit the size of the print that you choose.
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Analyze and Persevere Susan bought
3 plants that cost $2.75 each. She wants
to buy 3 clay pots that cost $4.15 each.
If Susan had $20 to start, does she have
enough money to also buy the clay pots?
Explain. Bc
Using arithmetic operations it can be seen that if Susan had $20 to start, she does not have enough money to buy 3 clay pots pricing $4.15 each after buying plants costing $2.75 each. She can buy 2 clay pots.
What are the types of arithmetic operation?
The four basic arithmetic operations in Maths, for all real numbers, are -
Addition (Finding the Sum; ‘+’)
Subtraction (Finding the difference; ‘-’)
Multiplication (Finding the product; ‘×’ )
Division (Finding the quotient; ‘÷’)
Susan bought 3 plants that cost $2.75 each.
Using arithmetic operation of multiplication -
Total cost of the plants = number of plants bought × cost of each plant
Total cost of the plants = 3 × 2.75
Total cost of the plants = $8.25
Susan wants to buy 3 clay pots that cost $4.15 each.
Using arithmetic operation of multiplication -
Total cost of the clay pots = number of clay plots × cost of each clay pot
Total cost of the clay pots = 3 × 4.15
Total cost of the clay pots = $12.45
The total amount of money Susan has is $20.
She has already bought the plants.
So, the money left with her after buying the plants is -
Using arithmetic operation of subtraction -
Money left with Susan = Total money - Total cost of the plants
Money left with Susan = 20 - 8.25
Money left with Susan = $11.75
Therefore, Susan has enough money to buy only 2 clay pots and not 3.
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A landscaping
company is putting small
stones around a circular fish pond with
diameter of 5.5 yards. If each bag of stones
fills a distance of 4 yards, how many bags do
they need? (Please show work)
If one bag of stones is sufficient to fill the distance of 4 yards , then to complete 5.5 yards of pond boundary, 2 bags are enough.
What is distance?Distance is a measure of length over an area that an object or location occupies. Displacement is the term for a change in distance. The distance traveled by a moving object is calculated as the product of speed and travel time.Measurements of distance include meters, kilometers, feet, yards, and more. Depending on their relationship to one another, these units can be switched between.It is assumed that the circular fish pond has a diameter of 5.5 yards. Four yards of the pond can be filled with one bag of stones. The total distance of 5.5 yards can then be filled with two bags of stones.To learn more about Displacement refer to:
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A rectangle has a perimeter of 38.6 kilometers and a base of 16.2 kilometers. What is the height?
The height of the rectangle is 3.1 kilometers.
What is the height?A rectangle is a 2-dimensional quadrilateral with four right angles and two diagonals which bisect each other . The perimeter of a rectangle is the distance round the rectangle. It is the sum of the four sides of the rectangle.
Perimeter of a rectangle = 2 x (height + width)
38.6 = 2 x (16.2 + height)
In order to determine the height, take the following steps:
38.6 / 2 = 16.2 + height
19.3 = 16.2 + height
height = 19.3 - 16.2 = 3.1 kilometers
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. Temoso borrowed R1 000 from the bank for 3 years at 8% compound interes Without using a formula, calculate how much Temoso owes the bank at the end of three years.
Answer:initial balance: 1000
interest rate:8%
term 20 years
how often: never
The final balance is $4,926.8.
The total compound interest is $3,926.8.
Step-by-step explanation:
Please help with this question ASAP
Answer:
x=8
Step-by-step explanation:
5(2)=10
4(2)=8
What equation is solved by the graphed systems of equations?
equation of first line -> y = x - 3
equation of second line -> y = 7x + 3
to get intersection, equate both equation
-> y = y
-> 7x + 3 = x - 3
Lines AE and GH are parallel in the image below. The image will be used to prove that the sum of the measures or the
interior angles of ACGH is 180°.
Which statement would be included in a proof of why m/C+m/G+mZH= 180
Angles F and C are congruent. An angle inside a form is called an interior angle.
What is interior angle?An angle inside a form is called an interior angle. The closed shape with vertices and sides is called a polygon. Every interior angle of a regular polygon is equal to every other interior angle. For instance, the inner angles of a square are all equal to the right angle, or 90 degrees. A set's interior is comprised of all of its open subsets. The area of a region that is "within" a given border is more often referred to as the interior of a geometric structure. For instance, the interior of a circle and a sphere, respectively, is a (open) disk. Interior angles are the angles created within or inside of a shape. In this case, the interior angles ABC, BCA, and CAB.
From the figure, it can be seen that Angles F and C are opposite angles. Opposite angles are non-adjacent angles formed by two intersecting lines. Opposite angles are congruent .
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Angles F and C are congruent. An angle inside a form is called an interior angle.
What is interior angle?An angle inside a form is called an interior angle. The closed shape with vertices and sides is called a polygon. Every interior angle of a regular polygon is equal to every other interior angle. For instance, the inner angles of a square are all equal to the right angle, or 90 degrees.
A set's interior is comprised of all of its open subsets. The area of a region that is "within" a given border is more often referred to as the interior of a geometric structure. For instance, the interior of a circle and a sphere, respectively, is a (open) disk. Interior angles are the angles created within or inside of a shape. In this case, the interior angles ABC, BCA, and CAB.
From the figure, it can be seen that Angles F and C are opposite angles. Opposite angles are non-adjacent angles formed by two intersecting lines. Opposite angles are congruent .
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Represent using Rational Algebraic expressions:
Rashid travels 240km from Abu Dhabi to Sharjah driving 120km/h for 2 hours. His parents strongly suggest he slow down by v km/h, even though it will take him t hours longer to make the trip, or he will lose his driving privilege. Which relation shows time, t, it will now take Rashid to make the trip relative to the speed, v with which he slows down?
The expression that shows time, t, it will now take Rashid to make the trip relative to the speed, v with which he slows down is t = (240 - (v/120) * 240) / (120 - v)
How to illustrate the speed?Speed is the rate at which an object's location changes in a particular direction. The distance traveled on relation changes to a particular direction. The distance in relation to the time it took to travel the distance is the speed. It's a scalar quantity.
The relation between time, t, and the speed at which Rashid slows down, v, is given by the formula:
t = (240 - (v/120) * 240) / (120 - v)
t = time
v= speed.
This formula can be derived by using the distance formula (distance = speed x time) and the fact that the distance traveled is constant (240 km).
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Find the perimeter of the given triangle
The perimeter of triangle DEF is 10.8 units.
What is perimeter of triangle?
The area around any two-dimensional figure determines its perimeter. We can calculate the perimeter of any closed shape by adding the lengths of its sides.
We are given that triangle ABC is similar to triangle DEF
So,
⇒AB/DE = BC/EF = AC/DF
We are given AB=5, BC=6 and DE = 3
Therefore,
⇒AB/DE = BC/EF
⇒5/3 = 6/EF
⇒EF = 3.6
Similarly, we are given AC =7
So,
⇒AB/DE = AC/DF
⇒5/3 = 7/DF
⇒DF = 4.2
Perimeter of triangle = DE + EF + DF
⇒Perimeter of triangle = 3 + 3.6 + 4.2
⇒Perimeter of triangle = 10.8 units
Hence, the perimeter of triangle DEF is 10.8 units.
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"subtract 7 from the sum of 34 and 3"
Answer: 30
Step-by-step explanation:
Answer:
30
Step-by-step explanation:
(34 + 3) -7
37 - 7
30