The angle at the center of the circle will be;
⇒ θ = 0.5 radian
What is Circle?The circle is a closed two dimensional figure , in which the set of all points is equidistance from the center.
Given that;
A sector of a circle of radius 10 cm and has an area of 25 cm².
Now,
Since, We know that;
⇒ A = 1/2 r²θ
Where, A is area of circle , r is radius of circle and θ is the angle at the center of the circle.
Here, A sector of a circle of radius 10 cm and has an area of 25 cm².
Substitute all the given values, we get;
⇒ A = 1/2 r²θ
⇒ 25 = 1/2 × 10² × θ
⇒ 25 = 50 × θ
⇒ θ = 25 / 50
⇒ θ = 0.5 radian
Thus, The angle at the center of the circle = 0.5 radian
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The ratio of hot dogs to hamburgers on a barbeque table is 5:4. If there are 36 hamburgers on the table then how many hot dogs must be there?
Step-by-step explanation:
let the ratio be x
then, 5x, 4x is the ratio of hotdog and hamburger
According to question,
5x+3x=36
8x=36
x=36÷8
x=4
therefore, no, of hotdogs are= 5x
=5×4
=20
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How do you undo addition
How do you undo subtraction
How do you undo multiplication
How do you undo division?
Answer:
To undo addition, you need to subtractto Undo subtraction, you need to addto undo multiplication, you need to divideto undo division, you need to multiplyBasically perform the opposite operation in order to undo a given operation
Step-by-step explanation:
f(x) = x3 If x = −2, y =
Answer:
-8
Step-by-step explanation:
x=-1, y=-1
x=0, y=0
Graph D (fourth option)
Predict a ranking for the speed of sound in four different substances: steel, 25°C air, 50°C air, and water. Use the kinetic theory of matter to defend your predictions.
Based on the principles of kinetic theory, the speed of sound in matter is determined by the mean free paths of the molecules that make up the matter and the properties of the material itself.
What is speed?Velocity is the speed at which an object moves or changes position over a period of time. It is usually measured in units such as meters/second, miles/hour, kilometers/hour. It is an important factor in the movement of objects and the movement of sound, light and other forms of energy. Speed is also an important factor in transport safety, as it affects how long it takes a vehicle to stop and how far it must travel to stop safely.
Predict the ranking of sound speeds for four different materials.
Steel, 25°C air, 50°C air and water. Use the theory of motion of matter to protect your predictions.
Therefore, the speed of sound varies greatly depending on the material. Below is the ranking of the speed of sound for the four substances listed. From fastest to slowest:
1. 25°C Air: The speed of sound in warm air at 25°C is the fastest of the four substances, and because air is made up of both light and heavy molecules, it can travel quickly. The speed of sound in warm air at 25 °C is about 343 m/s.
2. 50°C air: The speed of sound in air at 50°C is slower than in air at 25°C. This is because molecules in warm air spread out more and move more slowly. The speed of sound in air at 50 °C is approximately 331 m/s.
3. Water: Water molecules are denser and move slower, so the speed of sound in water is slower than in air. The speed of sound in water is approximately 1,482 m/s.
4. Steel: The speed of sound in steel is the slowest of the four substances. This is because steel is composed of heavier molecules that move slower than those in air and water.
Overall, the order of sound velocities for the four materials is air at 25°C, air at 50°C, water, and steel. This classification is based on the principle of kinetics that the speed of sound in a material is determined by the mean free paths of the molecules that make up the material and the properties of the material itself.
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coordinate plane with line g that passes through the points negative 3 comma 6 and 0 comma 5 What is the equation of the line in slope-intercept form that is perpendicular to line g and passes through the point (1, −2)?
An equation of the line in slope-intercept form that is perpendicular to line g and passes through the point (1, −2) is y = 3x - 5.
How to determine an equation of this line?Mathematically, the standard form of the equation of a straight line (slope-intercept form) is given by this mathematical expression;
y = mx + c
Where:
m represents the slope.x and y are the points.c represents the intercept.From the information provided, we have the following points on line g:
Point = (-3, 6)
Point = (0, 5)
Next, we would determine the slope of line g as follows;
Slope, m = (Change in y-axis, Δy)/(Change in x-axis, Δx)
Slope, m = (y₂ - y₁)/(x₂ - x₁)
Slope, m = (5 - 6)/(0 - (-3))
Slope, m = -1/3
In Mathematics, a condition that must be met for two lines to be perpendicular is given by:
m₁ × m₂ = -1
-1/3 × m₂ = -1
m₂ = 3
At point (1, -2), an equation of this line can be calculated in slope-intercept form as follows:
y - y₁ = m(x - x₁)
y - (-2) = 3(x - 1)
y + 2 = 3x - 3
y = 3x - 3 - 2
y = 3x - 5
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pls help 10 ptsss
NO LINKS
Answer:
o to http://
Step-by-step explanation:
Fill in the blank with a number to make the expression a perfect square.
[tex]x {}^{2} + 12x + |?| [/tex]
Trace triangle JKL and point P.
Draw the dilation of AJKL
using scale factor 3 and P
as the center of dilation,
The dilation of triangle JKL, with point P at the origin and scale factor of 3, is graphed on the image shown at the end of the answer.
What is a dilation?A dilation happens when the coordinates of the vertices of an image are multiplied by the scale factor, changing the side lengths of a figure.
The coordinates of the vertices of the original triangle JKL for this problem are attributed as follows:
J(1,1).K(1,5).L(4,1).The scale factor of the dilation is given as follows:
k = 3.
Meaning that each coordinate of each vertex of the triangle will be multiplied by 3, thus obtaining the coordinates of the vertices of the image of triangle JKL after the dilation, as follows:
J'(3,3).K'(3,15).L'(12,3).More can be learned about dilation at brainly.com/question/3457976
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You might need:
Calculator
10
Find the arc length of the semicircle.
Either enter an exact answer in terms of TT or use 3.14 for and enter your answer as a decimal.
units
Can y’all help me on question 11?!
Answer:
B and D
Step-by-step explanation:
B.
5 x 9 + 7 = 52
45 + 7 = 52
52 = 52
D.
6 x 9 + 4 = 58
54 + 4 = 58
58 = 58
what is the evaluation for 4-4y+y-3
Answer:
1-3 y
Step-by-step explanation:
Subtract the numbers 4 AND 3 WHICH WOULD EQUAL REWRITING THE ADDITON SO IT CHANGES THE MINUS SIGN TO A PLUS.
Aloma is 6 years older than Mecole. If the sum of their ages is 48, how old is Mecole? *
50 x 40 x 40 x 40000000000 x 3000000000 x 5000000000000000 x 10000202000
Answer:
4.800097e+50
Step-by-step explanation: multiply
Answer:
4.800097e+50
Step-by-step explanation:
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The diagonals of a quadrilateral ABCD intersects each other at the point O such that AO/BO=CO/DO.Prove that ABCD is a trapezium.
Answer:
Step-by-step explanation:
To prove that a quadrilateral ABCD is a trapezium when the diagonals intersect at a point O such that AO/BO=CO/DO, we can use the fact that opposite sides of a trapezium are parallel.
First, let's draw a diagram to represent the given information:
[asy]
pair A, B, C, D, O;
A = (0,0);
B = (2,0);
C = (3,2);
D = (1,2);
O = intersection point(A-C, B--D);
draw(A--B--C--D--cycle);
draw(A-C);
draw(B--D);
label("A", A, W);
label("B", B, E);
label("C", C, E);
label("D", D, W);
label("O", O, N);
label("$\theta_1$", (B+O)/2, NE);
label("$\theta_2$", (O+D)/2, NE);
label("$\theta_3$", (O+C)/2, NW);
label("$\theta_4$", (A+O)/2, NW);
[/asy]
Since the diagonals intersect at point O, the angles formed by the diagonals at O are supplementary (that is, they add up to 180 degrees). In other words, we have:
θ1 + θ2 = 180 degrees
θ3 + θ4 = 180 degrees
Since AO/BO=CO/DO, the triangles AOB and COD are similar. This means that the ratios of their sides are equal. We can write this as:
AO/BO = CO/DO
We can also write this as:
AO/DO = CO/BO
Then, since the angles formed by the diagonals at O are supplementary, we have:
θ1 + θ2 = 180 degrees
θ1 + θ4 = 180 degrees
Subtracting these two equations gives us:
θ2 - θ4 = 0
Since the angles are equal, they are also opposite angles of the quadrilateral ABCD. Therefore, the opposite sides of AB and CD are parallel, which means that ABCD is a trapezium.
Which triangle is similar to the one shown below?
3 cm
5 cm
4 cm
Answer:
C
Explanation:
they are in the ratio 1:2
The solution is Option C.
The triangle PRQ with sides 6 cm , 8 cm and 10 cm is similar to the triangle ABC with sides 3 cm , 4 cm and 5 cm and the ratio is 1 : 2
What are similar triangles?If two triangles' corresponding angles are congruent and their corresponding sides are proportional, they are said to be similar triangles. In other words, similar triangles have the same shape but may or may not be the same size. The triangles are congruent if their corresponding sides are also of identical length.
Corresponding sides of similar triangles are in the same ratio. The ratio of area of similar triangles is the same as the ratio of the square of any pair of their corresponding sides
Given data ,
Let the first triangle be represented as ΔABC
Now , the measure of side AB = 3 cm
The measure of side BC = 4 cm
The measure of side AC = 5 cm
Now , let the second triangle be represented as ΔPQR
where , the measure of side PQ = 6 cm
The measure of QR = 8 cm
The measure of PR = 10 cm
The ratio of sides of the triangle is 1 : 2
So , the triangles ΔABC and ΔPQR are similar and the corresponding sides are also in the ratio
Hence , the similar triangle is with the sides 6 cm , 8 cm and 10 cm
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Calculate a margin of error with sample size 1025 and a standard deviation of 1.5.
Answer:
385
Step-by-step explanation:
find the arithmetic mean and geometric mean of the set of numbers
{3, 7}
Arithmetic mean ________
Geometric mean ________
A. 21/2
B. 5
C. 21
D. 10
Answer: See explanation
Step-by-step explanation:
The arithmetic mean will be gotten by adding the numbers together and dividing them by 2. This will be:
= (3 + 7)/2
= 10/2
= 5
Geometric mean will be:
= ✓3 × 7
= ✓21
= 4.59
Math- algebra 1 - please help
For both pizzas A and B to cost the same, there must be 5 toppings. Equations can be categorized as identities or conditional equations.
what is equation ?The number is said to be in its simplest form when divided into its smallest equivalent fraction. What should be done to find the most basic form. Look for common factors in the numerator and denominator. Verify a fractional integer to verify if it qualifies as a prime number. A statement having two equilateral triangles and an equivalent sign in the middle is called an equation in mathematics. The general form of any equation contains the degrees of all the variables in descending order. The conventional form of a linear model is an x + b = 0. The general form of a linear equation with two variables is an x + b y + c = 0. (or something similar). Equations can be categorized as identities or conditional equations. An identity holds true regardless of the value given to the variables.
given
number of toppings be x
number of toppings for pizza A = $10 + x*$1.5
number of toppings for pizza B = $12.5 + x*$1
10 +1.5x = 12.5 + x
10 -12.5 = x- 1.5x
-2.5 = - 0.5x
x = 5
For both pizzas A and B to cost the same, there must be 5 toppings.
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What is the 5th term of the geometric sequence
9. 27. 81.243, ...?
Answer:
729
Step-by-step explanation:
You are multiplying 3 each time. The first 4 terms are given to you:
Term 1: 9
Term 2: 9 x 3 = 27
Term 3: 27 x 3 = 81
Term 4: 81 x 3 = 243
Term 5: 243 x 3 = 729
729 is the 5th term of the geometric sequence.
Answer:
729
Step-by-step explanation:
Each terms are multiplied by 3.
So the 5th term is 243*3 = 729.
On the grid, draw graphs of y=x+2 and x+y=3
Answer:
The image shows the answer and below I will explain more about it.
Step-by-step explanation:
To draw a line all you need is two points on the graph, and people mainly use the coordinates of the y and x intercepts to draw it (when x=0 and when y=0)
so for these questions all we do is:
y=0+2 (we are putting x=0 into the equation)
y=2, x=0 so this is the first of our set of coords:
0=x+2
x=-2 y=0 (we are putting y=0 into the equation)
so all you do is plot these in and draw a line which passes between both,
now just repeat for the other one :)
In 3 billion repetitions of an experiment, a random event occurred in 500 million cases.
The probability of the event is 1.
True or False
The probability of the event is 0.
True or False
What is the expected probability of this event?
What is the expected probability of the complement of the event?
Answer:
The probability of the event is 1. False
The probability of the event is 0. False
What is the expected probability of this event?
The probability of the event is (500 million successful events) / (3 billion total repetitions) = 0.1667 or 16.67%.
What is the expected probability of the complement of the event?
The complement of the event is the event not happening. The probability of the event not happening is (3 billion total repetitions - 500 million successful events) / (3 billion total repetitions) = 0.8333 or 83.33%.
Uday Tahlan
Which equation has two solutions? A. W=-1. B. W=1. C. W=-2. D. W=0
Answer: An equation has two solutions when it has two distinct values that can be assigned to the variable to make the equation true.
In this case
equation A. W=-1 is a single solution
equation B. W=1 is a single solution
equation C. W=-2 is a single solution
equation D. W=0 is a single solution
So none of the given equations have two solutions. they all have only one solution.
It's worth mentioning that, if the equation is a quadratic equation (in the form of ax² + bx + c = 0) and it has a non-zero discriminant (b² - 4ac) then the equation will have two distinct real solutions.
In this case the equations are not in that form, and also doesn't show any signs of having two solutions.
Step-by-step explanation:
what’s the solution to the linear equation?
2/3x-1/2=1/3+5/6x
a. x=-5
b. x=-1/6
c.1/6
d.x=5
Find the missing measure. Round to the nearest tenth (first decimal place)
15
26°
x
The missing measure of the given right-angled triangle is: x = 2.5
How to find the measure?Given a right-angled triangle, with one of its angle as 14° ,assume
angle y= 14°. Also given length of one of it's side is 18. Let's assume the side as z = 18.
As it is given it's a right-angled triangle,
∴ By using trigonometric formula,
tan y = opposite /adjacent
∴ tan 14° = z/x
tan 14° = 18/x
7.24 = 18/x ......( as tan 14°= 7.24)
∴ x = 2.48
∴ x ≈ 2.5
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Can y’all help me on question 24?!
Please help, whoever gives the best explanation will be marked Brainliest
Answer:
2by8 of marians garden
Step-by-step explanation:
Which statement best explains the relationship between
lines FG and HJ?
O They are perpendicular because their slopes are
equal,
O They are perpendicular because their slopes are
negative reciprocals,
O They are not perpendicular because their slopes are
equal,
• They are not perpendicular because their slopes are
not negative reciprocals.
Answer:
You have to see for yourself on the picture we cannot see. But from these statements alone it's either the second or the fourth option.
Step-by-step explanation:
They are perpendicular because their slopes are equal - Doesn't make sense, they would be parallel not perpendicular
They are perpendicular because their slopes are negative reciprocals - Makes sense
They are not perpendicular because their slopes are equal - Makes sense but it does not explain their relationship as well as the statement above
They are not perpendicular because their slopes are not negative reciprocals - Makes sense since that's how perpendicular lines work.
Conclusion, since we can't see the lines. You have to see for yourself on the picture we cannot see. But from these statements alone it's either the second or the fourth option.
If you add a picture I can narrow it down.
Which power has a base of 2 and an
exponent of 6?
A 28
B 62
C 126
Answer:
A
Step-by-step explanation:
the base is the the big number, the exponent the small one
5 Bill hits a hockey puck on a frozen pond.
He records the distance the puck travels
over time. Use any method to explain
whether the distance the puck travels per
second is constant.
Answer: To determine whether the distance the puck travels per second is constant, we can use the concept of average speed. Average speed is defined as the total distance traveled divided by the time it takes to travel that distance.
If the average speed is constant, then the distance the puck travels per second is also constant. If the average speed is not constant, then the distance the puck travels per second will vary.
To determine the average speed, we need to know the total distance traveled and the time it took to travel that distance. Once we have this information, we can calculate the average speed by dividing the total distance traveled by the time it took to travel that distance. If the resulting value is constant, then the distance the puck travels per second is also constant.
Step-by-step explanation: