The distance between two towns, A and B, is 100 km. Mr Jones drove from A to B at an average speed of v km/h. (a) Write down an expression, in terms of v, for the time, in hours, that he took to complete the journey from A to B. [1]
The expression giving the time that he took to complete the journey is given as follows:
t = 100/d.
What is the relation between velocity, distance and time?Velocity is distance divided by time, hence the following equation is built to model the relationship between these variables:
v = d/t.
For this problem, the distance is given as follows:
d = 100 km.
Hence the expression to obtain the time needed is given as follows:
v = 100/t
vt = 100
t= 100/v.
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grade 4N usually has physical education on a Wednesday at 1:43pm and ends at 2:13 pm. with the new mandated change, at what time will grade 4N PE ends?
Grade 4N usually has physical education on a Wednesday at 1:43 pm and ends at 2:13 pm. with the new mandated change, at 2:28 pm Grade 4N PE will now end
The new regulations require physical education classes to be a minimum of 30 minutes long. Allowing for an extra 15 minutes to the existing PE class brings the end time to 2:28 pm. This is an important change because it ensures that all students receive the recommended amount of physical activity each week.
Physical education is a vital part of a student’s development, as it provides the opportunity for students to become more active, and socially engaged, and learn about the importance of a healthy lifestyle. The extra 15 minutes of physical education also allows for more time for students to learn about safety procedures and the proper way to use the equipment, which is important for the overall well-being of the students.
Additionally, the extra time allows for more time for individual instruction, which can be beneficial for students who need extra help or who may be struggling with a certain skill.
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PLEASE HELP ASAP WILL GIVE BRAINLEST!
The value of the x is 228.57 units.
What is the angle bisector theorem?
The angle bisector theorem states that a triangle's angle divides the opposing side into two portions that are proportionate to one another.
We have given,
Triangle, Let's consider it ΔABC,
then,
Measures of Angles ∠B= 37, ∠C=32, and side AD = 82
To find x =?
In the triangle side AD is the bisector, it forms a new triangle ΔADC.
According to the angle bisector theorem, the angle bisector of a triangle divides the opposite side into two parts that are proportional to the other two sides of the triangle.
As per the Angle bisector theorem, the ratio of the line segment BD to DC equals the ratio of the length of the side AB to AC.
To find AB & AC:
sin θ = side opposite to angle θ / hypotenuse
cos θ = side adjacent to angle θ / hypotenuse
sin θ = AD / AB
sin 37 = 82 / AB
AB = 82/ sin 37
AB = 136.25
cos θ = BD / AB
cos θ = BD/136.25
BD = cos37 * 136.25
BD = 104.9
sin θ = AD / AC
sin32 = 82 / AC
AC = 149
cos32 = DC / AC
cos32 = DC / 149
DC = 123.67
So, x = BD + DC
x = 104.9 + 123.67
x = 228.57
Hence, the value of the x is 228.57 units.
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Which of the following graphs are identical?
Answer:
[tex]\sqrt[3]{-x}[/tex] and [tex]-\sqrt[3]{x}[/tex]
Step-by-step explanation:
I inserted these functions into a graphing calculator and checked if they were identical or not
Answer:
First part is D and F
The Second part is A,C,D
Step-by-step explanation:
EDG 2023
Taffy twist candy company keeps the same ratio of pieces of strawberry candy to banana candy in their packs. The mega pack has 40 strawberry candies and 50 banana candies. The party pack has 20 strawberry candies.
How many banana candies are in the party pack?
Answer:
The party pack has 20 strawberry candies and 25 banana candies. To calculate this, divide the number of strawberry candies in the mega pack (40) by the total number of candies in the mega pack (90). This gives you a ratio of 4:5. For the party pack, divide the number of strawberry candies (20) by that same ratio (4:5) to find the number of banana candy pieces, which is 25.
A person invests 7000 dollars in a bank. The bank pays 6. 25% interest compounded semi-annually. To the nearest tenth of a year, how long must the person leave the money in the bank until it reaches 11300 dollars?
It takes 3.9 years long the person have to leave the money in the bank until it reaches 11300 dollars
Suppose that the initial amount of something is P.
Let after one unit of time, it increases by R% [per unit time] end compounds on the resultant total of that quantity, then, after T such units of time, then the quantity would increase to:
[tex]A=P\left(1+\frac{R}{100}\right)^{nT}[/tex]
A person invests 7000 dollars in a bank. The bank pays 6.25 % interest compounded semi-annually.
Given that:
Principal =7000
Interest (r) = 6.25 % compounded semi annually
As compounded semi annually n = 2
Calculate time, t, if final amount A = 11300
Using the compound interest formula
[tex]A=P\left(1+\frac{R}{100}\right)^{nT}[/tex]
A = Final amount
n = number of times interest is applied per period
11300 = 7000 [tex](1+0.0625)^{2t[/tex]
113 = 70 [tex](1.0625)^{2t[/tex]
1.614 = [tex](1.0625)^{2t[/tex]
Take the log of both sides
log 1.614 = 2t log 1.0625
0.2079 = 2t (0.0263)
0.2079 = 0.0526 t
t = 3.9
Time period will be 3.9 years.
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A parabola opening up or down has vertex (0, 0) and passes through (12, 18). Write its equation in
vertex form.
Simplify any fractions.
Answer:
[tex]y=\dfrac{1}{8}x^2[/tex]
Step-by-step explanation:
[tex]\boxed{\begin{minipage}{5.6 cm}\underline{Vertex form of a quadratic equation}\\\\$y=a(x-h)^2+k$\\\\where:\\ \phantom{ww}$\bullet$ $(h,k)$ is the vertex. \\ \phantom{ww}$\bullet$ $a$ is some constant.\\\end{minipage}}[/tex]
Given that the vertex of the parabola is (0, 0):
h = 0k = 0Substitute the values of h and k into the formula:
[tex]y=a(x-0)^2+0[/tex]
[tex]y=ax^2[/tex]
Given that the parabola passes through the point (12, 18), substitute this into the equation and solve for a:
[tex]18=a(12)^2[/tex]
[tex]18=144a[/tex]
[tex]a=\dfrac{18}{144}[/tex]
[tex]a=\dfrac{1}{8}[/tex]
Therefore, the equation of the parabola in vertex form is:
[tex]y=\dfrac{1}{8}x^2[/tex]
A mason needs to purchase mortar mix for a retaining wall consisting of 640 blocks. The guidelines for this mix suggest that 12 bags are required for every 100 blocks. Assuming that he cannot purchase part of a bag, how many bags will he need?
The mason will need 77 bags of mortar mix for the retaining wall.
What is purchase?Purchasing is the process a business or organization uses to acquire goods.
To find out how many bags of mortar mix the mason needs
we need to calculate the number of bags required for 640 blocks.
The guidelines suggest that 12 bags are required for every 100 blocks, so for 640 blocks, we need:
12 bags * (640 blocks / 100 blocks) = 12 * 6.4 = 76.8
Since the mason cannot purchase part of a bag, he will need to round up to the nearest whole number of bags. In this case, 77 bags will be required.
So, the mason will need 77 bags of mortar mix for the retaining wall.
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a rectangle is meters long and meters wide. the area of the rectangle is square meters. the solution is
Multiplying the length and width together, we get 3m x 4m = 12m². This means that the area of the rectangle is 12 square meters.
Area = Length x Width
Area = 3m x 4m
Area = 12m²
To solve for the area of a rectangle, you will need to use the formula Area = Length x Width. In this example, the length of the rectangle is 3 meters and the width is 4 meters. To calculate the area of the rectangle, you will need to multiply the length and width together. 3m x 4m = 12m². Therefore, the area of the rectangle is 12 square meters.
The area of a rectangle is calculated by multiplying the length and width of the rectangle together. The formula used to calculate the area of a rectangle is Area = Length x Width. To put this formula into practice, lets use the example of a rectangle that is 3 meters long and 4 meters wide. Multiplying the length and width together, we get 3m x 4m = 12m². This means that the area of the rectangle is 12 square meters. This formula can be used for any rectangle, as long as the length and width are known. Knowing the area of a rectangle can be useful for many purposes, such as calculating the amount of paint or carpeting needed to cover the surface area of the rectangle.
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Chris says that he can find the surface area faster by
thinking of the box as a triangular prism on top of a
rectangular prism. He finds the surface area of each one
and adds them together. Does his method make sense?
Chris's method of finding the surface area of a box by thinking of it as a combination of a triangular prism and a rectangular prism is a valid and useful approach.
What is Surface area?
The surface area of a solid item is a measurement of the total area occupied by the object's surface.
Yes, Chris's method of finding the surface area of a box by thinking of it as a combination of a triangular prism and a rectangular prism makes sense.
A box can be thought of as a combination of a triangular prism and a rectangular prism because a box is made up of six faces, with three rectangular faces and three triangular faces. By finding the surface area of the triangular prism and the rectangular prism separately, and then adding them together, one can find the total surface area of the box.
This method can make finding the surface area of a box faster and easier because one can use formulas that are specifically designed for finding the surface area of triangular prisms and rectangular prisms. By breaking down the box into its constituent parts, one can simplify the calculation and avoid having to use a more complex formula for finding the surface area of a box.
In summary, Chris's method of finding the surface area of a box by thinking of it as a combination of a triangular prism and a rectangular prism is a valid and useful approach.
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The density of water is 1 gram per cubic centimeter. An object floats in the water if its density is less than water's density, and it sinks if its density is great than water's.
Suppose a ball with mass 90 grams is in the shape of a sphere with radius 4 centimeters. Will the ball sink or float in the water?
ROUND YOUR ANSWERS TO THE NEAREST HUNDRETH AND USE THE π BUTTON WHEN CALCULATING.
The sphere ball will not sink because it has a density of 0.34 g/cm³ which is lesser than density of water
What is density?Density is the substance's mass per unit of volume. The symbol most often used for density is ρ, although the Latin letter D can also be used. Mathematically, density is defined as mass divided by volume.
Density = mass/volume
volume of the sphere = 4/3 πr³
= 4/3 × 3.14 ×4³
= 803.84/3
= 267.95 cm³
Density of the sphere = 90/267.95
= 0.34 g/cm³( nearest hundredth)
Therefore the sphere will not sink because it's density is lesser than that of water.
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Attached imagine to answer.
Answer:
A)7y-4xy
Algebraic expressions are just that expressions. No inequality signs or equations. That's what makes them special
Step-by-step explanation:
The associative property states that when adding or multiplying three or more terms, you can group the terms in any order and still get the same answer. The expression must use only one operation. For example, 4 × 3 × 2 can be thought of as 4·(3 · 2), which is 4 · 6, or as (4 · 3) · 2, which is 12 · 2.
The associative property works with addition and multiplication, but not division and subtraction.
The associative property works with addition and multiplication, but not division and subtraction because the grouping of terms affects the result of the operation.
A mathematical concept known as the associative property governs the addition and multiplication of three or more terms. It claims that the way the phrases are grouped has no bearing on how the operation turns out.
This implies that the same result may be obtained by adding or multiplying three or more terms in any sequence. Nevertheless, division and subtraction are not covered by the associative property.
We should take a gander at the accompanying cases to show how expansion and increase are connected:
Example 1: Addition
(2 + 3) + 4 = 2 + (3 + 4)
5 + 4 = 2 + 7
9 = 9
Example 2: Multiplication
(2 × 3) × 4 = 2 × (3 × 4)
6 × 4 = 2 × 12
24 = 24
We can observe from both cases that the word grouping has no impact on the operation's outcome. The associative characteristic, therefore, applies to both addition and multiplication.
The associative characteristic, however, does not apply to division and subtraction. For instance:
(8 ÷ 4) ÷ 2 ≠ 8 ÷ (4 ÷ 2)
2 ÷ 2 ≠ 8 ÷ 2
1 ≠ 4
We can observe from this example that the term grouping has an impact on the operation's outcome. The associative property does not, therefore, apply to division.
The associative property does not also hold for subtraction. For instance:
(8 - 4) - 2 ≠ 8 - (4 - 2)
4 - 2 ≠ 8 - 2
2 ≠ 6
In this example, we can again see that the grouping of terms affects the result of the operation. Therefore, the associative property does not apply to subtraction.
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Find the solution of the differential equation that satisfies the given initial condition.
dy/dx = x/y, y(0) = -2
Refer to the attached image.
3. numbers with square roots that are whole
they are called perfect square numbers
4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196 heres some hope that helps!
Solve number 10 in the image below.
The relationship between the rectangles ABCD and WXYZ is AB = WX.
What are rectangles?The internal angles of a rectangle, which has four sides, are all exactly 90 degrees. At each corner or vertex, the two sides come together at a straight angle. The rectangle differs from a square because its two opposite sides are of equal length.
Given the rectangles ABCD and WXYZ, in a coordinate grid,
length of rectangle ABCD is parallel to the Y-axis and the length of rectangle WXYZ is parallel to the X-axis,
let us consider the scale of the grid to be 1 unit,
from graph,
AD = BC = 5 units
AB = DC = 3 units,
and for rectangle WXYZ,
XY = WZ = 5 units
WX = YZ = 3 units
so AB = WX
Hence option D is correct.
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To graph the shape on the coordinate grid, click on a point that represents a vertex, then repeat this process for each vertex point of the shape. To complete the shape, click on the first vertex point. The shape will be shaded in once it is completed.
Check the picture below.
part a: list three ways in which you can represent the expression, “for every 96 action/ adventure movies, there are 38 sci-fi movies to stream,” as a ratio. part b: explain why 96:38 is the same as 38:96
They both represent the same information - for every 96 action/ adventure movies, there are 38 sci-fi movies to stream. 96:38 and 38:96 are both equivalent ratios because they are inverse proportions of each other.
What is the inverse ?Inverse is the opposite of something. It can be used to describe the opposite of a mathematical operation, such as taking the reciprocal of a number, or the opposite of a logical statement, such as negating the statement. It can also be used to describe the opposite of an action, such as reversing a direction or undoing an action. Inverse can also be used to describe the opposite of an effect, such as the opposite of a physical reaction or the opposite of an emotional response. Inverse relationships can often be seen in nature, such as how a decrease in temperature results in an increase in pressure, or how an increase in the amount of light results in a decrease in the number of insects in a certain area.
a:
1. 96:38
2. 38:96
3. (96/38):1
b: 96:38 and 38:96 are both equivalent ratios because they are inverse proportions of each other. They both represent the same information - for every 96 action/adventure movies, there are 38 sci-fi movies to stream. The only difference is the order of the numbers, but the ratio remains the same.
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How many liters are in 9 quarts
Answer: 8.5 L
Step-by-step explanation: I looked it up l o l
Answer:
Your answer is: 8.51718
Step-by-step explanation:
There's 1.057 quarts in a liter. You multiply that by 9 to get 8.51718.
What is the answer for this I’m stuck
This is algebra
The simplest form of (m². m⁵. m⁻³ ) is m⁴
Exponent:Writing a number as the product of itself a number of times are known as an Exponent.
For example,
If 7 is multiplied by itself 3 times, i.e. 7 × 7 × 7. This can be represented as 7³. Where 7 is the base and 3 is the exponent.
If a is multiplied by itself b times, i.e. a × a × a...(b times). This can be represented as (aᵇ). Where 'a' is the base and 'b' is the exponent.
Here we have
The expression (m². m⁵. m⁻³ )
As we know, (aᵇ . aˣ. aᵃ) = aᵇ⁺ˣ⁺ᵃ
(m². m⁵. m⁻³ ) = m²⁺⁵⁻³ = m⁴
Therefore,
The simplest form of (m². m⁵. m⁻³ ) is m⁴
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what is the tempature change of 15 to -9
Answer:
change in temperature = final - temperature
= -9°-15° = -24°C
Calculate the tax for each taxable income of a head of household.
The income tax for each household are:
Household 1 = $113,775Household 2 = $1,09540Household 3 = $18,904.88Household 4 = $47,222.50Let's evaluate each household income tax cases:
Household 1
Taxable income = $400,000
Tax rate = $45,210 + 35% over $204,100
Income tax = $45,210 + 35% ($400,000 - $204,100)
Income tax = $45,210 + $68,565
Income tax = $113,775
Household 2
Taxable income = $10,954
Tax rate = 10% income
Income tax = 10% ($10,954)
Income tax = $1,095.40
Household 3
Taxable income = $108,962
Tax rate = $12,962 + 24% over $84,200
Income tax = $12,963 + 24%($108,962 - $84,200)
Income tax = $12,963 + $5,942.88
Income tax = $19,804.88
Household 4
Taxable income = $209,850
Tax rate = $45,210 + 35% over $204,100
Income tax = $45,210 + 35% ($209,850 - $204,100)
Income tax = $45,210 + $2,012.50
Income tax = $47,222.50
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Hide Sample Answer
The area formula is A = 7². Substitute the values of r (3.5 inches) and TT (3.14) in the formula to find A:
A-3.14x (3.5)² square inches
A = 38.465 square inches.
The area of each light is about 38.465 square inches.
Part C
What is the total area of all three circular lights?
The total area of all three circle lights is:
115.395 square inches.
How do you find the area of a circle?The area of the circle formula helps measure the space occupied by a circular field or plot. Assuming you have land to the fence, the area formula will help you determine how much fencing you will need.
The area of a circle is the area occupied by the circle in the two-dimensional plane. It can be easily determined by the formula A = [tex]\pi r^{2}[/tex], (Pi r-square) where r is the radius of the circle. Area units are square units such as For example m², cm², etc.
The total area of all three circular lights can be calculated by multiplying the area of one light (38.465 square inches) by 3.
Total area = 3 x 38.465 square inches
Total area = 115.395 square inches.
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A science class planned a field trip for which the total costs were $80. When four additional students decided to go on the trip, the cost per student was reduced by $1. How many students went on the trip?
Answer:
There were 8 student who went on a trip.
Step-by-step explanation:
Let's call the original number of students "x". The total cost of the trip was $80, so the cost per student was $80/x.
When four more students decided to go, the new number of students became x + 4, and the cost per student was reduced by $1, to $80/x - $1.
We can set up an equation to solve for x:
$80/x = $80/(x + 4) - $1
Expanding the right side:
$80/x = $80/x + $80/4 - $1
Combining like terms:
$80/x = $80/4 + $80/x - $1
Solving for x:
$80/4 = $80/x - $1
$80/4 + $1 = $80/x
$20 + $1 = $80/x
$21 = $80/x
Finally, solving for x:
x = 80/$21 = 80/21 = 3.81 (rounded to nearest whole number)
So, there were 4 students on the original trip.
There were 4 students on the original trip and 4 more students joined, so in total, there were 4 + 4 = 8 students who went on the trip.
Answer: 8 student
Step-by-step explanation:
02: Pretest CR Algebra 2 A / 2:Equations and Functions
option B is correct, the equation or function of the graph is y≥3/4x-3.
What is Slope of Line?The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.
The slope intercept form of a line is y=mx+b, where m is slope and b is the y intercept.
The slope of line passing through two points (x₁, y₁) and (x₂, y₂) is
m=y₂-y₁/x₂-x₁
The line passing through points (4,0) and (0,3)
Slope=3/-4=-3/4
Now let us find y intercept
0=-3/4(4)+b
0=-3+b
b=3
Hence, option B is correct, the equation or function of the graph is y≥3/4x-3.
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I was wondering how you solve for x if you 2x=18?
Answer: the answer is 9
Step-by-step explanation:
simply divide 2 from both sides in order to cancel out the left side and isolate the variable. 18 divided by 2 is 9
Can someone please explain the answer with steps and formula I have a test tomorrow
Answer:
sorry but it not possible here i can explain on another platform
can someone help me with this ik its not math, but there wasn’t a category for band/music. this is due tmr and i’m struggling. i’ll give 50 points!!
1. a break in the music
2. how loud or soft to play
3. bar lines organize the staff into these boxes of music
4. perform two or more notes as one note for the combined sum of all the notes
5. noteheads are placed on the five horizontal lines and four spaces
6. Signifies the end of a piece of music show me your mom
7. Divide the staff in the measures
8. Medium soft
9. Holding note longer than its normal value
10. Fast
11. The style used to begin or end a note
12. A medium tempo
13. Stretch the note to hold it for full value
14. a slow tempo
15. Perform the note with emphasis
16. Gradually getting louder
17. Gradually getting softer same as decrescendo
18. Top number is the number of beats in a measure bottom number is the type of note that receives one beat
19. Gradually getting faster
20. Smoothly connected
the blacked out ones are the ones i’ve already done!!
Answer:
1. rest
2. dynamics
3. measure
4. chord
5. staff
6. double bar line
7. bar line
8. mezzo-piano
9. fermata
10. allegro
11. articulation
12. moderato
13. tenuto
14. larghetto?
15. accent
16. crescendo
17. diminuendo
18. time signature
19. accelerando
20. slur
solid shapes are regular when all the faces are eaqual which 3d shapes is regular?
a) cylinder
b) cube
c) cuboid
A solid shape is considered to be regular if all of its faces are congruent, meaning they have the same shape and size. In the context of three-dimensional shapes, there are several examples of regular solid shapes, including the cylinder, cube, and cuboid.
A) Cylinder: A cylinder is a solid shape with two parallel, congruent circular bases connected by a lateral surface. All of the lateral faces of a cylinder are parallelograms, and the circular bases have the same shape and size, making the cylinder a regular solid shape.
B) Cube: A cube is a regular solid shape with six congruent square faces. All of the faces meet at right angles, and each face is parallel to the opposite face, making the cube a regular solid shape.
C) Cuboid: A cuboid is a solid shape with six rectangular faces. The opposite faces of a cuboid are congruent rectangles, and all of the faces meet at right angles, making the cuboid a regular solid shape.
In conclusion, the cube and the cuboid are regular solid shapes because all of their faces are congruent, while the cylinder is a regular solid shape because all of its lateral faces are congruent parallelograms and its bases have the same shape and size. These regular solid shapes are useful in geometry and provide a foundation for understanding the properties of more complex solid shapes.
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find the value of y in the proportion (4y+5):3=(y+7):4
The value of y in the given proportion is 1/13.
In mathematics, a proportion is a statement that two ratios are equal. A ratio is a comparison of two quantities, typically written as a fraction. For example, if we have two quantities, a and b, then the ratio of a to b is written as a/b.
A proportion is written in the form a/b = c/d, where a, b, c, and d are numbers. This means that the ratio of a to b is equal to the ratio of c to d. We can also write this as a:b = c:d.
To solve the proportion:
(4y+5):3=(y+7):4
We can cross-multiply and simplify:
4(4y+5) = 3(y+7)
16y + 20 = 3y + 21
Subtracting 3y from both sides:
3y + 20 = 21
Subtracting 20 from both sides:
13y = 1
Dividing both sides by 13:
y = 1/13
Therefore, the value of y that satisfies the proportion is y = 1/13.
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