Answers
The area of triangle XYZ when using YZ as the base, can be found to be 24 square units.
How to find the area ?To find the area of triangle XYZ, we can use the Shoelace Theorem (also known as the Surveyor's Formula). Given the coordinates of the vertices, the area of the triangle is:
Area = (1/2) x |(x1(y2 - y3) + x2(y3 - y1) + x3(y1 - y2))|
Plugging in the coordinates:
Area = (1/2) x |(2(9 - 1) + 10(1 - 5) + 6(5 - 9))|
Area = (1/2) x |(2(8) - 10(4) + 6(-4))|
Area = (1/2) x |(16 - 40 - 24)|
Area = (1/2) x |-48|
Area = 24 square units
The area of triangle XYZ is 24 square units.
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Related Questions
The price of a regular snowcone at Icy's Snowcone Stand is $2.85
Find the volume of a regular snowcone.
Find the price per cubic inch of a regular snowcone.
6in and 3in
Answers
The volume of a regular snowcone is 56.52 in³.
The price per cubic inch of a regular snowcone is $0.05.
How to calculate the volume of a cone?In Mathematics and Geometry, the volume of a cone can be determined by using this formula:
V = 1/3 × πr²h
Where:
V represent the volume of a cone.h represents the height.r represents the radius.By substituting the given parameters into the formula for the volume of a cone, we have the following;
Volume of cone, V = 1/3 × πr²h
Volume of regular snowcone, V = 1/3 × 3.14 × 3² × 6
Volume of regular snowcone, V = 56.52 in³.
For the price per cubic inch, we have:
Price per cubic inch = Cost/Volume
Price per cubic inch = 2.85/56.52
Price per cubic inch = $0.05
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april, bill , candace, and bobby are to be seated at random in a row of chairs. what is the probability that april and bobby will occupy the seats at the end of the row?
Answers
The required probability of occupying seats at the end of the row by April and Bobby is equals to 0.0333( approximately ).
Number of chairs in a row = 5
April and Bobby need to occupy the two end chairs.
The other two people, Bill and Candace, can sit in any of the 3 remaining chairs.
The total number of ways to seat the 4 people in the 5 chairs is
= 5!/(5-4)!
= 5x4x3x2
= 120.
April can sit in either of the two end chairs, and then Bobby can sit in the other end chair.
Bill and Candace can then sit in either of the two remaining chairs, in either order.
The number of ways to seat April and Bobby at the ends of the row is,
= 2x1x2x1
= 4.
Probability that April and Bobby will occupy the seats at the end of the row is,
4/120
= 1/30
= 0.0333( approximately ).
Therefore, the probability of April and Bobby occupy seats at the end of the row is 1/30 or approximately 0.0333.
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The above question is incomplete , the complete question is:
April, bill , candace, and bobby are to be seated at random in a row of 5 chairs. What is the probability that April and bobby will occupy the seats at the end of the row?
Which graph represents the function f (x) = 3 +4?
Answers
The graph that closely matches the function is graph C.
What is the equation of a line parallel to y=-5x+3 that passes through (3,7)
Answers
Find the length of the hypotenuse of the right triangle. Explain how you can interpret the Pythagorean Theorem using the areas of squares. (photo attached)
Answers
Answer:
The length of the hypotenuse is 39. In the step by step explanation I included the Pythagorean Theorem formula and how it converted to the equation here to solve the problem.
Step-by-step explanation:
a² + b² = c²
15² + 36² = 1,521
√1,521 = 39
39 = c
Maceeey's family wants to buy a new desktop computer. The sides of the screen are 20 inches by 24 inches. What is the diagonal of the screen?
Answers
If you do 20x24=480
Hope that helps!
HELPP MY IXL IS DUE TMR : Find the distance between the points (-6.3, -5.6) and (-6.3, -9.9).
Answers
Using the distance formula we know that the distance between the given 2 points is 4.3 units.
What is the distance?The length of the line segment bridging two points on a plane is known as the distance between the points.
d=((x2 - x1)2 + (y2 - y1)2) is a common formula to calculate the distance between two points.
This equation can be used to calculate the separation between any two locations on an x-y plane or coordinate plane.
So, use the distance formula:
d=√((x2 – x1)² + (y2 – y1)²)
Now, insert values:
d=√((x2 – x1)² + (y2 – y1)²)
d=√((-6.3 – (-6.3))² + (-9.9 – (-5.6))²)
d=√((-6.3 + 6.3))² + (-9.9 + 5.6))²)
d=√(0)² + (-4.3)²)
d=√18.49
d=4.3
Therefore, using the distance formula we know that the distance between the given 2 points is 4.3 units.
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Mr. Sonny's science class is calculating the average number of blinks per minute. Jan blinks 100 times in 5 minutes. What is her blinking rate, in blinks per minute?
Answers
Jan blinked 100 times in 5 minutes.
100/5 = 20
Therefore, Jan blinks at a rate of 20 blinks per minute.
So her blinking rate is:
In the diagram below, find the indicated segment length. Assume that lines or segments which appear to be tangent are tangent.
Answers
Step-by-step explanation:
16 is tangent and the radial (12) is perpendicular
so this is a right triangle
Use Pythagorean theorem
?^2 = 12^2 + 16^2
?^2 = 400
? = 20 units
please help will give brainliest
Answers
Answer:
A = 600 ft²
Step-by-step explanation:
Area of a triangle = (1/2) · b · h
↓ plugging in the given values (noting that the base is actually at the top of the triangle)
A = (1/2) · 40 · 30
↓ multiplying
A = 20 · 30
A = 600 ft²
Step-by-step explanation:
See image:
( the picture is cut off , so I cannot tell the units....If each square is 10 feet then it would be
600 ft^2)
Question 5 (20 points)
The midpoint M and one endpoint of AB are given. Find the coordinates of the other endpoint.
A(-8,4) and M(5,-9).
a
(10,-22)
b
(18,-8)
c
(18,-22)
d
(6,-22)
Answers
Answer:
(18,-22)Step-by-step explanation:
We can use the midpoint formula to find the coordinates of the other endpoint of AB. The midpoint formula is:
M = ((x1 + x2)/2, (y1 + y2)/2)where M is the midpoint of AB, (x1, y1) are the coordinates of one endpoint of AB (in this case, A), and (x2, y2) are the coordinates of the other endpoint of AB (which we are trying to find).
Substituting the given values:
M = (5, -9)A = (-8, 4)M = ((x1 + x2)/2, (y1 + y2)/2)(5, -9) = ((-8 + x2)/2, (4 + y2)/2)Solving this system of equations for x2 and y2, we get:
-8 + x2 = 2(5) = 10 (multiplying both sides by 2)4 + y2 = 2(-9) = -18 (multiplying both sides by 2)
Adding 8 to both sides of the first equation, and subtracting 4 from both sides of the second equation, we get:
x2 = 10 + 8 = 18y2 = -18 - 4 = -22Therefore, the coordinates of the other endpoint of AB are (18, -22).i need to identify the value of x that makes each pair of ratios equivalent
1. 2:x and 12:18
2. 5:15 and x:3
3. x:4 and 45:20
4. 21 to x and 7 to 10
5. x to 50 and 16 to 25
6. 6 to 8 and 18 to x
7. 9/36 and x/4
8. 42/22 and 21/x
9. x/7 and 5/1
10. 20/x 4/8
i cant even understand the subject its too hard for me
Answers
Answer:
lbozo
Step-by-step explanation:
Find X in this equation: 5x^2-5x-30=0
x=? x=???
Answers
Answer:
x1 = -2;
x2 = 3
Step-by-step explanation:
[tex]5 {x}^{2} - 5x - 30 = 0[/tex]
Solve this quadratic equation (a = 5; b = -5; c = -30)
[tex]d = {b}^{2} - 4ac = ( { - 5})^{2} - 4 \times 5 \times ( - 30) = 25 + 600 = 625 > 0[/tex]
x1 = (-b - √d) / 2a = (5 - 25) / 2 × 5 = -20 / 10 = -2
[tex]x2 = \frac{ - b + \sqrt{d} }{2a} = \frac{5 + 25}{2 \times 5} = \frac{30}{10} = 3[/tex]
Determine if each situation is a rotation, a translation, or a reflection
Answers
A shape is moved to the right by 5 units. Transformation: Translation
A shape is flipped over a line. Transformation: Reflection
A shape is rotated 90 degrees clockwise. Transformation: Rotation
A shape is moved diagonally to the left and up by 3 units. Transformation: Translation
A shape is reflected over the line y = x. Transformation: Reflection
What is Translation?In geometry, a translation is a type of transformation that moves every point of a figure or an object in a straight line without changing its size, shape, or orientation. It is also referred to as a slide.
To perform a translation, you select a vector (which determines the distance and direction of the movement) and apply it to every point of the figure or object. For example, if you want to translate a shape 4 units to the right and 2 units up, you would add 4 to the x-coordinates of all the points and add 2 to the y-coordinates of all the points.
Situation 1: A shape is moved to the right by 5 units.
Transformation: Translation
Situation 2: A shape is flipped over a line.
Transformation: Reflection
Situation 3 : A shape is rotated 90 degrees clockwise.
Transformation: Rotation
Situation 4 : A shape is moved diagonally to the left and up by 3 units.
Transformation: Translation
Situation 5: A shape is reflected over the line y = x.
Transformation: Reflection
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Complete question:
Determine if each situation is a rotation, a translation, or a reflection.
Your friend just purchased a new sports car for $32,000. he received $6,000 for his trade in and he used that money as a down payment for the new sports car. he financed the vehicle at 6.76% apr over 48 months with a monthly payment of $619.15. determine, from the given information, the finance charge. a. $3,719.20 b. $5,476.10 c. $4,610.64 d. $6,000
Answers
The finance charge is $3,723.20, which is closest to option A, $3,719.20.
The total amount of financing that your friend needed for the new sports car was:
$32,000 purchase price - $6,000 trade-in value = $26,000
Your friend financed $26,000 at 6.76% APR over 48 months, with a monthly payment of $619.15.
We can use the monthly payment and the APR to calculate the finance charge over the 48-month period. The finance charge is the difference between the total amount paid (48 months x $619.15 = $29,723.20) and the original amount financed ($26,000).
Finance charge = Total amount paid - Original amount financed
= $29,723.20 - $26,000
= $3,723.20
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147 cars were sold during the month of april. 81 had air conditioning and 82 had automatic transmission. 54 had air conditioning only, 55 had automatic transmission only, and 11 had neither of these extras. what is the probability that a randomly selected car had automatic transmission or air conditioning or both?
Answers
The Probability that the randomly selected car has either air-conditioning or automatic transmission or both is 0.9252.
The total number of cars sold in April is = 147,
⇒ n(S) = 147,
Let the cars which has Air Conditioning is denoted by "A", and
the number of cars which has automatic transmission be denoted by "B",
the number of cars which has AC = n(A) = 81,
the number of cars which are automatic be = n(B) = 82,
the number of cars which has only AC = n(A∩B') = 54,
the number of cars which are only automatic is = n(A'∩B') = 11,
the number of cars which has neither = n(A'∩B') = 11,
So, the probability that car has neither of these is = 11/147,
We know that, P(A'∩B') = P((A∪B)'),
So, P(A∪B) = 1 - P((A∪B)') = 1 - 11/147 = (147 - 11)/147 = 136/147 = 0.9252,
Therefore, the required probability is 0.9252.
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Helen determined she walks about 1,800 steps per of a mile. How many steps did she take if she walked 4 miles? A. 7,200 B. 9,000 C. 4,500 D. 5,760
Answers
Answer: A- 7,200
Step-by-step explanation:
If 1 mile = 1,800
then 4 miles = 1,800 x 4 = 7,200
a survey revealed that 21.5% of the households had no checking account, 66.9% had regular checking accounts, and 11.6% had now accounts. of those households with no checking account 40% had savings accounts. of the households with regular checking accounts 71.6% had a savings account. of the households with now accounts 79.3% had savings accounts. the probability that a randomly selected household has a savings account is:
Answers
The probability that a randomly selected household has a savings account is 57.16%. therefore, correct option is (C) 57.16%.
Given,
A survey revealed that 21.5% of the households had no checking account.
Of those households with no checking account, 40% had savings accounts.= 21.5% × 40%= 0.086%66.9%
had regular checking accounts. Of the households with regular checking accounts,
71.6% had a savings account.= 66.9% × 71.6%= 47.8916%11.6% had now accounts.
Of the households with now accounts,
79.3% had savings accounts.= 11.6% × 79.3%= 9.1828%
Therefore, the probability that a randomly selected household has a savings account is:
0.086 + 47.8916 + 9.1828 = 57.16%
So, the correct option is (C) 57.16%.
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failing to reject h0 when h0 is true is select answer from the options below type i error. type ii error. no error. impossible.
Answers
If we reject H₀ when Hₐ is true, it is a type II error. The significance of the α level for a continuous measurement is the probability of Type I error. The strength of the test for alternatives is 1 minus elsewhere II. type error probability.
Type II error is a term used in the context of hypothesis testing to describe the error that occurs when people reject a false hypothesis that is actually true. A type II error creates a false positive, also known as an omission error. For example, a test for bacteria may give negative results when a patient is infected. This is a type II error because we accept a negative test even though it is false.
Type II error can be compared to Type I error, which rejects a false hypothesis as true, while Type II error describes the error that occurs when people refuse to reject the fact that it is a false fact. Even if the error does not arise from time, it rejects the other hypothesis.
Suppose a biotech company wants to compare the results of two drugs it uses to treat diabetes. The null hypothesis states that the two drugs are equally effective. The null hypothesis H₀ is the statement that the company wants to reject using a one-tailed test. Another theory, Hₐ, says that no two drugs have the same effect. Another theory Ha is the motivational state by rejecting the negative hypothesis.
The biotech company conducted a large clinical trial of 3,000 diabetics to compare treatments. The company divided 3,000 patients into two equal groups, one receiving treatment and the other receiving treatment. chose a significance level of 0.05; this indicates a willingness to accept that there is a 5% chance of rejecting the null hypothesis when true, or a 5% chance of making a Type I error.
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Complete Question:
Failing to reject H0 when H0 is true is
(1) Type I error.
(2) Type II error.
(3) no error.
(4) impossible.
find the product of 4x(x+6)
Answers
Answer:
4x^2 + 24x.
Step-by-step explanation:
To find the product of 4x(x+6), we can use the distributive property of multiplication.
4x(x+6) = 4x * x + 4x * 6
= 4x^2 + 24x
Answer: 16x
Explanation:
4x(x+6)
4x+12x
16x
In a tuition centre 70% students have studied Maths and 30% have studied English. If all the students who study English also study Maths and 150 did not study both the subjects, find the number of students who study Maths but not English.
Answers
Given that 70% of the students have studied Maths, which means 0.7T students have studied Maths.
Similarly, 30% of the students have studied English, which means 0.3T students have studied English.
Also, given that all students who studied English also studied Maths. So, the number of students who studied only Maths will be 0.7T - 0.3T = 0.4T.
Now, we know that 150 students did not study both subjects.
Let's represent the number of students who studied both subjects (Maths and English) as "x".
So, the number of students who studied only Maths will be (0.7T - x) and the number of students who studied only English will be (0.3T - x).
According to the given information, the total number of students who did not study both subjects is 150.
Therefore, we can write an equation as:
0.7T - x + 0.3T - x + x = T - 150
Simplifying this equation, we get:
1.4T - x = T - 150
0.4T = x - 150
Now, substituting the value of x = 0.3T (as all students who studied English also studied Maths), we get:
0.4T = 0.3T - 150
0.1T = 150
T = 1500
So, the total number of students in the tuition center is 1500.
Now, the number of students who studied only Maths will be (0.7T - x) = 0.4T = 0.4 × 1500 = 600.
Therefore, 600 students studied Maths but not English.
Para jugar un juego, se lanza un cubo con cuatro caras numeradas del 1 al 6 y se lanza una moneda imparcial. ¿Cuál es la probabilidad de que caiga en cara y sacar un 3 o un 5?
Answers
El cubo tiene cuatro caras numeradas del 1 al 6, lo que significa que hay un total de 4 posibles resultados en los que se puede obtener un 3 o un 5.
La moneda tiene dos caras, y dado que es imparcial, hay una probabilidad del 50% de que caiga en cara.
Entonces, la probabilidad de que se lance el cubo y la moneda al mismo tiempo y se obtenga un 3 o un 5 y una cara es igual a la probabilidad de obtener un 3 o un 5 multiplicada por la probabilidad de obtener una cara en la moneda.
La probabilidad de obtener un 3 o un 5 es de 2/6, o 1/3. La probabilidad de obtener una cara en la moneda es de 1/2.
Por lo tanto, la probabilidad total es:
1/3 x 1/2 = 1/6
La probabilidad de que caiga en cara y sacar un 3 o un 5 es de 1/6 o aproximadamente 0.1667.
Is this possible? I've looked everywhere and can't figure anything out.
Answers
Answer:
y = 10 x = 8
Step-by-step explanation:
the triangles are exactly the same meaning that each right triangle would have the same measurements and side lengths
A triangle always equals 180 degrees
The path of the basketball is modeled by the equation h() = −.25 + 2 + 4 where t is the time in seconds and h(t) is the height of the basketball at time t. What type of vertex (minimum or maximum) would this quadratic function create? Explain, using any method, how you found your answer.
Answers
To determine the type of vertex created by this quadratic function, we need to find the vertex of the parabola. The vertex of a parabola is the point where the parabola reaches its minimum or maximum value.
What is the vertex of a quadratic function?The given equation [tex]h(t) = -0.25t^2 + 2t + 4[/tex] represents the height of the basketball as a function of time.
The vertex of a quadratic function in the form of [tex]f(x) = ax^2 + bx + c[/tex] can be found by using the formula:
[tex]x = -b/2a[/tex]
[tex]y = f(x) = a(x^2) + bx + c[/tex]
where (x,y) is the vertex of the parabola.
Comparing this with the given equation [tex]h(t) = -0.25t^2 + 2t + 4[/tex] , we see that a = -0.25, b = 2, and c = 4.
Substituting these values in the formula, we get:
[tex]t = -2/(2\times(-0.25)) = 4[/tex]
[tex]h(4) = -0.25(4)^2 + 2(4) + 4 = 6[/tex]
Therefore, the vertex of the parabola is [tex](4, 6)[/tex] . Since the coefficient of the t^2 term is negative, the parabola opens downwards, and the vertex represents the maximum point of the parabola. The quadratic function [tex]h(t) = -0.25t^2 + 2t + 4[/tex] would create a maximum vertex.
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QUICK! I need help with this one please
Answers
The first term of the polynomial in standard form must be 4y⁴
If Julian wrote the last term as -3x⁴, the terms with the highest degree must have a coefficient of 3.
To get the standard form, we need to combine like terms and arrange the terms in descending order of degree.
The polynomial can be simplified as follows:
4x²y²-2y⁴-8xy³+9x³y+6y⁴-2xy³-3x⁴+x²y²
= -3x⁴ + (4x²y² + x²y²) + (-2y⁴ + 6y⁴) + (-8xy³ - 2xy³) + 9x³y
= -3x⁴ + 5x²y² + 4y⁴ - 10xy³ + 9x³y
Therefore, the standard form of the polynomial is
-3x⁴ + 5x²y² + 4y⁴ - 10xy³ + 9x³y
= 4y⁴ + 5x²y² + -3x⁴ - 10xy³ + 9x³y
The term with the highest degree is -3x⁴, and the terms are arranged in descending order of degree. The answer is not one of the options given.
Therefore, the first term of the polynomial in standard form must be 4y⁴.
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which of the following equations is of a parabola with the vertex at (1,-2) ?
Answers
Answer: y=(x-1)^2 - 2
Step-by-step explanation:
The equation for a parabola in this situation is y = a(x - h)^2 + k, h being the x point and k being the y point. Plug in the values, and you get y=(x-1)^2 - 2.
Can anyone help with this? Sorry about the camera quality
Answers
Yes, the ball reach a height of 25 meters from the ground , got the answer by solving equation given .
what is height ?
Height refers to the vertical distance between a point or an object and a reference level, usually the ground or a specific reference point. In the given context, height refers to the vertical distance of the ball from the ground at any given time, as modeled by the function h(t) = -5t² +7t+24.
In the given question,
h(t) = -5t² +7t+24
To find the time it takes for the ball to reach a height of 25 meters, we set h(t) equal to 25 and solve for t:
-5t² + 7t + 24 = 25
Simplifying, we get:
-5t² + 7t - 1 = 0
Using the quadratic formula, we get:
t = (-(7) ± √((7)² - 4(-5)(-1))) / (2(-5))
t = 1.4 seconds or t = 0.143 seconds (rounded to three decimal places)
Therefore, the ball will reach a height of 25 meters after 1.4 seconds or 0.143 seconds.
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5. Centroid for right triangle ABC with Angle A=40 degrees and AB= 10 cm. Include centroid
on constructed triangle. Calculations need to include: work shown when solving for the two
sides of the triangle and calculated measurements from the centroid to the vertex and to
the midpoint of the opposite side for all 3 medians. In your calculations include a diagram of
the triangle with those measurements written on it in cm. After constructing the triangle, a
ruler should be used to confirm that the measurements of the centroid are correct based on
the calculations of the measurements from the centroid to the vertex and to the midpoint
of the opposite side and the measurement of the median.
Explain with drawings of the triangle and measurements
Hint: Use tan sin cos and draw it out (doesn’t have to be to scale)
Answers
[tex]sin(40) = BC/10[/tex][tex]sin(40) = BC/10[/tex]Distance from Centroid to Midpoint of AB ≈ 2.5 cm. Therefore, the measurements of the centroid and the medians of the triangle have been calculated and confirmed using a ruler. The diagram of the triangle with the measurements.
To find the centroid of a right triangle ABC with angle A = 40 degrees and AB = 10 cm, we first need to find the lengths of the other sides of the triangle. Let's call the length of BC as x and the length of AC as y.
Using trigonometry, we can find that:
[tex]sin(40) = BC/10[/tex]
[tex]BC = 10*sin(40)[/tex]
BC ≈ 6.427 cm
[tex]cos(40) = AC/10[/tex]
[tex]AC = 10*cos(40)[/tex]
AC ≈ 7.664 cm
Now that we have the lengths of all three sides of the triangle, we can find the coordinates of the centroid. The centroid is the point where the three medians of the triangle intersect, and each median passes through a vertex of the triangle and the midpoint of the opposite side.
To find the centroid, we first find the midpoint of each side of the triangle:
[tex]Midpoint of AB = (0, 5)[/tex]
[tex]Midpoint of AC = (3.832, -1.864)[/tex]
[tex]Midpoint of BC = (-3.832, -1.864)[/tex]
Next, we find the coordinates of the centroid by averaging the coordinates of the three vertices:
[tex]Centroid = ((0+3.832-3.832)/3, (5-1.864-1.864)/3)[/tex]
[tex]Centroid = (0, 0.424)[/tex]
To confirm that the measurements of the centroid are correct, we can measure the distances from the centroid to the vertex and to the midpoint of the opposite side for all three medians. These distances are known as the medians of the triangle.
The median from vertex A passes through the centroid and the midpoint of BC. The distance from the centroid to vertex A is one-third the length of this median. Using the distance formula, we can find that:
[tex]Distance from Centroid to A = \sqrt((0-0)^2 + (0.424-0)^2)[/tex]
Distance from Centroid to A ≈ 0.424 cm
The distance from the centroid to the midpoint of BC is also one-third the length of the median from vertex A. The midpoint of BC is (-3.832/2, -1.864/2) = (-1.916, -0.932). Using the distance formula, we can find that:
[tex]Distance from Centroid to Midpoint of BC = \sqrt((0-(-1.916))^2 + (0.424-(-0.932))^2)[/tex]
Distance from Centroid to Midpoint of BC ≈ 2.532 cm
We can use similar methods to find the distances from the centroid to the vertices and midpoints of the other sides of the triangle. The final measurements and diagram are shown below:
Distance from Centroid to A ≈ 0.424 cm
Distance from Centroid to Midpoint of BC ≈ 2.532 cm
Distance from Centroid to B ≈ 2.532 cm
Distance from Centroid to Midpoint of AC ≈ 3.508 cm
Distance from Centroid to C ≈ 3.608 cm
Distance from Centroid to Midpoint of AB ≈ 2.5 cm
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g two roommates take the bus to campus. there are two types of busses: local and express. the number of busses that arrive in an hour is poisson distributed with mean of 20. twenty-five percent of busses are express and seventy-five percent are local. the type of bus is independent. express busses take 16 minutes and local busses take 28 minutes. the first roommate always takes the first bus to arrive. the second roommate takes the first express bus to arrive. what is the difference between the expected total time for the trip (waiting and travel) for the first roommate and the second roommate.
Answers
The difference between the expected total time for the trip (waiting and travel) for the first roommate and the second roommate is 0 hours.
To calculate the expected total time for the trip (waiting and travel) for both roommates, we need to find the waiting time and travel time for each roommate.
Step 1: Calculate the arrival rates of local and express buses.
There are 20 buses arriving per hour, with 75% local and 25% express. Thus,
Local bus arrival rate: 20 * 0.75 = 15 buses per hour
Express bus arrival rate: 20 * 0.25 = 5 buses per hour
Step 2: Calculate the waiting time for each roommate.
The waiting time for buses is the inverse of the arrival rate.
First roommate waiting time (first bus): 1 / 20 = 0.05 hours
Second roommate waiting time (first express bus): 1 / 5 = 0.2 hours
Step 3: Calculate the expected travel time for each roommate.
First roommate travel time: 0.75 * 28 + 0.25 * 16 = 21 + 4 = 25 minutes (0.4167 hours)
Second roommate travel time: 16 minutes (0.2667 hours)
Step 4: Calculate the expected total time for the trip for each roommate.
First roommate total time: Waiting time + Travel time = 0.05 + 0.4167 = 0.4667 hours
Second roommate total time: Waiting time + Travel time = 0.2 + 0.2667 = 0.4667 hours
Step 5: Find the difference between the expected total time for both roommates.
Difference = First roommate total time - Second roommate total time = 0.4667 - 0.4667 = 0 hours.
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In a lab experiment, a population of 250 bacteria is able to triple every hour. Which equation matches the number of bacteria in the population after 8 hours?
Answers
Answer: 5,250
Step-by-step explanation:
250x3=750
750x7