When fritz drives to work his trip takes 40 minutes, but when he takes the train it takes 30 minutes. find the distance fritz travels to work if the train travels an average of 15 miles per hour faster than his driving. assume that the train travels the same distance as the car?
The ratio of the amount of money Jason has to the amount of money Wilson has is 12:13. After Wilson spent $63, Jason had 3 times as much money as Wilson.
a. How much money did I Jason have?
b. How much money did they have altogether?
The diameter of a circle is 8 kilometers. What is the angle measure of an arc kilometers long?
This is the angle measured in radians for an arc that is 1 kilometre long is [tex]\({\theta = \frac{360}{\pi^2}}\)[/tex] radians.
To find the angle measure of an arc in radians, we use the formula:
[tex]\[ \text{Angle in radians} = \frac{\text{Arc length}}{\text{Radius}} \][/tex]
Given that the diameter of the circle is 8 kilometres, we can find the radius by dividing the diameter by 2:
[tex]\[ \text{Radius} = \frac{\text{Diameter}}{2} = \frac{8 \text{ km}}{2} = 4 \text{ km} \][/tex]
The arc length is given as [tex]\(\pi\)[/tex] kilometres. Now we can calculate the angle in radians subtended by the arc:
[tex]\[ \theta = \frac{\text{Arc length}}{\text{Radius}} = \frac{\pi \text{ km}}{4 \text{ km}} = \frac{\pi}{4} \][/tex]
However, this is not the final answer. We need to find the angle measured in degrees. To convert radians to degrees, we use the conversion factor:[tex]\[ 1 \text{ radian} = \frac{180}{\pi} \text{ degrees} \][/tex]
Thus, the angle in degrees is:
[tex]\[ \theta_{\text{degrees}} = \theta_{\text{radians}} \times \frac{180}{\pi} = \frac{\pi}{4} \times \frac{180}{\pi} = \frac{180}{4} = 45 \text{ degrees} \][/tex]
Now, we need to find the angle measured in radians that correspond to an arc length of 1 kilometre. Using the same formula:
[tex]\[ \theta_{\text{1 km}} = \frac{1 \text{ km}}{4 \text{ km}} = \frac{1}{4} \text{ radians} \][/tex]
To find the number of radians in the entire circle, we multiply by [tex]\(2\pi\)[/tex](since the circumference is [tex]\(2\pi r\)[/tex] and the radius is 4 km):
[tex]\[ \text{Full circle in radians} = 2\pi \times 4 \text{ km} = 8\pi \text{ radians} \][/tex]
Now, we want to find how many times the arc length of 1 km fits into the full circle's circumference:
[tex]\[ \text{Number of arcs} = \frac{8\pi \text{ radians}}{1/4 \text{ radians}} = 32\pi \][/tex]
This represents the number of times the 1 km arc goes around the circle, which is also the measure of the angle in radians that corresponds to a 1 km arc. Since the full circle is [tex]\(360\)[/tex] degrees, the angle measured in degrees for the 1 km arc is:
[tex]\[ \theta_{\text{1 km degrees}} = 32\pi \times \frac{180}{\pi} = 32\pi \times \frac{360}{2\pi} = 32 \times 180 = 5760 \text{ degrees} \][/tex]
However, this is not the final answer. We made a mistake in the calculation. We should not multiply the number of arcs by the full circle's degrees. Instead, we should divide the full circle's degrees by the number of arcs to find the angle measure for one arc:
[tex]\[ \theta_{\text{1 km degrees}} = \frac{360}{32\pi} = \frac{360}{\pi} \times \frac{1}{32} = \frac{360}{\pi^2} \times \frac{\pi}{32} = \frac{360}{\pi^2} \text{ degrees} \][/tex]
To convert this back to radians, we multiply by [tex]\(\frac{\pi}{180}\)[/tex]:
[tex]\[ \theta_{\text{1 km radians}} = \frac{360}{\pi^2} \times \frac{\pi}{180} = \frac{360}{\pi^2} \text{ radians} \][/tex]
This is the angle measured in radians for an arc that is 1 kilometre long.
Alex is making a nut mixture to sell at the local farmer's market. He mixes 2 pounds of cashews with a nut mixture that is 40% cashews. The resulting mixture is 52% cashews. How many pounds of nut mixture does Alex make?
Mr. Martinez mixes a 90% sugar cinnamon flavored solution with a 75% sugar cherry flavored solution to make 12 gallons of a new product. The new product is 85% sugar. How much of the cherry flavored solution did he use?
Mr.Acosta works in the lab at a pharmaceutical company. He needs 26 liters of a 36% acid solution to test a new product. His supplier only ships a 42% and a 29% solution. How much of the 42% solution will Mr.Acosta need to use?
PLEASE SHOW WORK!!
Using the definitions of odd and even functions , explain why y=sin x+1 is neither odd or even
Final answer:
The function y = sin x + 1 is neither even nor odd because it does not satisfy the conditions f(x) = f(-x) for even functions and f(-x) = -f(x) for odd functions after substitution and simplification.
Explanation:
An even function is defined as a function that satisfies the condition f(x) = f(-x), showing symmetry about the y-axis. An odd function, on the other hand, satisfies the condition f(-x) = -f(x), indicating symmetry about the origin. To determine if y = sin x + 1 is an odd or even function, we must check these conditions.
Applying the even function definition, we would expect sin(-x) + 1 = sin(x) + 1 which is not true because sin(-x) = -sin(x) and thus does not satisfy the required symmetry. When we apply the odd function test, we expect -(sin x + 1) = sin(-x) + 1, which also doesn't hold because -sin(x) - 1 does not equal sin(-x) + 1. Therefore, y = sin x + 1 is neither odd nor even.
Which postulate or theorem can be used to prove that △JKL is similar to △MKN?
A. SSS Similarity Theorem
B. ASA Similarity Theorem
C. AA Similarity Postulate
D. SAS Similarity Theorem
Answer:
The correct option is D.
Step-by-step explanation:
In triangle △JKL,
[tex]\frac{JK}{KL}=\frac{30}{50}=\frac{3}{5}[/tex]
In triangle △MKN,
[tex]\frac{MK}{KN}=\frac{15}{25}=\frac{3}{5}[/tex]
In triangle △JKL and △MKN
[tex]\frac{JK}{KL}=\frac{MK}{KN}[/tex]
[tex]\angle JKL=\angle MKN[/tex] (Vertically opposite angles)
Since two sides are proportional and an inclined angle is congruent, so by SAS theorem of similarity we get
[tex]\triangle JKL=\triangle MKN[/tex]
Therefore option D is correct.
Calculate the slant height for the given square pyramid. Round to the nearest tenth.
Pyramid base = 6 cm
Height = 5 cm
A. 6.2 cm
B. 5.8 cm
C. 7.8 cm
D. 7.2 cm
the answer would have to be 7.8
Answer: 7.8
Step-by-step explanation:
Kala bought two types of cheese at a deli. She bought 0.50 pound of American cheese and 1.25 pounds of Swiss cheese. The bar diagram and equation below represent Kala’s purchase, where p represents the total number of pounds of cheese she bought.
What is the total number of pounds of cheese Kala bought?
0.75
1.20
1.30
1.75
Answer:
The total number of pounds of cheese Kala bought is 1.75 pounds
Step-by-step explanation:
Kala bought two types of cheese at a deli.
She bought 0.50 pound of American cheese and 1.25 pounds of Swiss cheese.
The total number of pounds of cheese Kala bought
= 0.50+1.25
= 1.75 pounds
Hence, the total number of pounds of cheese Kala bought is:
1.75 pounds
In the United States, the mean average height of adult women is approximately 65.5 inches, with a standard deviation of 2.5 inches. If height is normally distributed,what percent of the women in this country are between 63 and 70.5 inches tall?
To keep heating costs down for a structure, architects want the ratio of surface area to volume as small as possible. An expression for the ratio of the surface area to volume for the square prism shown is 2b+4h/bh. Find the ratio when b=12 ft and h=18ft.
Final answer:
The ratio of surface area to volume for the square prism is 4/9 when b = 12 ft and h = 18 ft.
Explanation:
The expression for the ratio of surface area to volume of the square prism is 2b + 4h/bh. To find the ratio when b = 12 ft and h = 18 ft, substitute these values into the expression.
Ratio = 2(12) + 4(18)/(12)(18)
= 24 + 72/216
= 96/216
= 4/9
Therefore, the ratio of surface area to volume for the given square prism is 4/9 when b = 12 ft and h = 18 ft.
The ratio of surface area to volume for a square prism with a base of 12 ft and a height of 18 ft is calculated using the formula 2b + 4h / bh, which results in a ratio of 4 / 9 ft⁻¹.
Explanation:The student has asked to find the ratio of surface area to volume for a square prism when given specific dimensions. The formula provided is 2b + 4h / bh, where b is the base length and h is the height of the prism. To find the ratio for b = 12 ft and h = 18 ft, we substitute these values into the formula:
Ratio = (2 × 12 ft) + (4 × 18 ft) / (12 ft × 18 ft) =
24 ft + 72 ft / 216 ft² =
96 ft / 216 ft².
After performing the calculations, we simplify the expression to get the ratio:
Ratio = 96 ft / 216 ft² = 4 / 9 ft⁻¹.
Thus, the ratio of surface area to volume for a square prism with a base of 12 ft and a height of 18 ft is 4 / 9 ft⁻¹.
John says the transformation rule (x, y) es002-1.jpg (x + 4, y + 7) can be used to describe the slide of the pre-image (4, 5) to the image (0, ???2). What was his error?
We are given transformation rule
(x, y) --> (x + 4, y + 7).
The coordinate of the pre-image is (4,5).
The coordinate of the transformed image is (0,-2).
Please see, if we apply
(x, y) --> (x + 4, y + 7) rule.
(4,5) coordinate would become (4 +4 , 5+7 ) = (8,12).
But we need (0,-2) instead of (8,12).
Let us reverse operation in the given rule and check.
Let us change (x + 4, y + 7) to (x-4, y-7) and now check.
(4,5) coordinate would become (4-4 , 5-7) = (0,-2).
So, we got exact coordinate of the transformed image.
Therefore, error was
(x, y) --> (x + 4, y + 7) rule should be (x, y) --> (x - 4, y - 7) rule.
Transformation involves changing the position of a point.
John's error is that, he subtracted the points instead of adding them.
The pre-image is given as:
[tex]\mathbf{(x,y) = (4,5)}[/tex]
The image is given as:
[tex]\mathbf{(x,y) = (0,-2)}[/tex]
The transformation rule is given as:
[tex]\mathbf{(x,y) \to (x + 4,y + 7)}[/tex]
When the rule [tex]\mathbf{(x,y) \to (x + 4,y + 7)}[/tex] is applied on [tex]\mathbf{(x,y) = (4,5)}[/tex], we have:
[tex]\mathbf{(x,y) = (4+4,5+7)}[/tex]
[tex]\mathbf{(x,y) = (8,12)}[/tex]
Hence, John's claim is incorrect.
His error is that, he subtracted the points instead of adding them.
Read more about transformations at:
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PLEASE explain this, I'm so lost. 25 points! What is the area of the base of the pyramid? Enter your answer in the box. Express your answer in radical form.
The answer is:
area of base = [tex]12\sqrt{3}[/tex]
Hope it helps!
Ramon earns $1,770 each month and pays $53.70 on electricity. To the nearest tenth of a percent, what percent of Ramon's earnings are spent on electricity each month?
Can anyone help me please
How many times do you need to divide by ten to get from 3731.7 to 373.17
A person in a rowboat two miles from the nearest point on a straight shoreline wishes to reach a house six miles farther down the shore. if the person can row at a rate of 3 mi/h and walk at a rate of 5 mi/h, find the least amount of time required to reach the house. how far from the house should the person land the rowboat?
Through a time, distance and speed optimization problem, we find the least amount of time to reach the house is approximately 2.11 hours. The person should land the boat 2 miles from the house.
Explanation:The problem given is a classic time, distance and speed optimization problem which can be solved with a bit of calculus and geometric reasoning. The first step is to define variables. Let's say the person decides to row to a point x miles down the shore, and then walk the remaining distance.
The time taken to row is the distance rowed divided by the rowing speed, and since the rowing distance is the hypotenuse of the right triangle formed, it is sqrt(4+[tex]x^2[/tex]) miles. Hence, time rowing is sqrt(4+[tex]x^2[/tex])/3 hours.
The distance walked is 6-x and hence, the time walking is (6-x)/5 hours.
The total time is then T(x)=sqrt(4+[tex]x^2[/tex])/3+(6-x)/5. The task is to find an x that minimizes T(x). To do so, take the derivative of T(x), set it equal to 0 and solve for x. After conducting these steps, you find that the minimum time is attained at x=2. Therefore, the least amount of time required would be T(2) which is approximately 2.11 hours. The person should land the rowboat 2 miles from the house.
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The area of a room is 396 square feet. The length is x+3, and the width is x+7 feet. Find the dimensions of the room
Factor completely 12a3d2 − 6ad3. Prime 6a3d3(2a − d) 6ad2(2ad − d) 6ad2(2a2 − d)
the numbers of wins and losses of two local basketball teams are on the table find the probability that a randomly selected game from the season was played by the wolves given that it was a lose
Probability is the chance of an event to occur from a total number of outcomes.
The formula for probability is given as:
Probability = Number of required events / Total number of outcomes.
The probability that a randomly selected game from the season was played by the wolves given that it was a loss is 1/5.
What is probability?It is the chance of an event to occur from a total number of outcomes.
The formula for probability is given as:
Probability = Number of required events / Total number of outcomes.
We have,
Total number of wins and losses = 12 + 14 + 16 + 18 = 60
Number of losses wolves has = 12
Now,
The probability that a randomly selected game from the season was played by the wolves given that it was a loss.
= 12/60
= 1/5
Thus,
The probability that a randomly selected game from the season was played by the wolves given that it was a loss is 1/5.
Learn more about probability here:
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What are the solutions to the following system?
Answer:
C
Step-by-step explanation:
You roll two fair dice, a green one and a red one. (a) what is the probability of getting a sum of 6? (enter your answer as a fraction.)
Answer:
Step-by-step explanation:
Please someone help me !!! Thank you !!
what is the vertex of f(x)=5^2+20-16
will give branliest Which events are mutually exclusive?
Jon eats more than 1 apple; Jon eats 3 apples.
Jon eats 4 apples; Jon eats 1 apple.
Jon eats 2 apples; Jon eats more than 2 apples.
Jon eats 2 apples; Jon eats 4 apples.
Answer:
Jon eats 2 apples; Jon eats more than 2 apples.
Step-by-step explanation:
Mutually exclusive events are events which have no common element between them. They are completely disjoint and the intersection would be a null set
Hence probability for the intersection of mutually exclusive events =0
Here we are given 4 options to select.
Jon eats more than 1 apple; Jon eats 3 apples.
These two are not mutually exclusive as eating 3 apples includes eating 1 apple.
Jon eats 4 apples; Jon eats 1 apple.
These two are not mutually exclusive as eating 4 apples includes eating 1 apple.
Jon eats 2 apples; Jon eats more than 2 apples.
These two are mutually exclusive since he cannot eat 2 applies exactly and also more than 2 apples
Jon eats 2 apples; Jon eats 4 apples.
These two are not mutually exclusive as eating 4 apples includes eating 2 apple.
Hence correct answer is
Jon eats 2 apples; Jon eats more than 2 apples.
SHALL CROWN BRAINLIEST!
Which sentence uses a double negative correctly?
A. I was not displeased by my performance at the recital.
B. I don't have no hat to wear to the game.
C. Fernando's parents won't give him no money for lunch.
D. Molly never gets no respect from her sister.
I vaguely suspect the answer is A, but I need someone to confirm my suspicions.
Answer:
it's A u were correct
Step-by-step explanation:
Matthew bought 4 new compact discs at $16.99 each and a carrying case for $35.89. He paid 2007-03-04-00-00_files/i0250000.jpg% sales tax on his purchases. If Matthew paid $112.42 total, determine if he paid the correct amount. a. Matthew paid $0.15 too little for his purchases. b. Matthew paid $0.16 too much for his purchases. c. Matthew paid $0.05 too much for his purchases. d. Matthew paid the correct amount for his purchases.
Consider the image of ABC for the translation (x, y) --> (x + 4, y - 2). What is the ordered pair of C'?
Jack is building a rectangular fence for his ferret. He has 20 feet of fencing and wants the short side of the fence to be 7/2 feet. How long will the other side of the fence be? Write the answer in decimal form.
General Idea:
When we are working with word problems, we need to follow the below steps:
Step 1: Assign variable for the unknown that we need to find.
Step 2: Write a meaningful mathematical equation using the sentence given
Step 3: Solve the equation by Performing reverse operation by Undoing whatever is done to the variable. Solving means find the value of the variable which will make the equation TRUE.
Applying the concept:
Step 1: Let 'x' be the length of longest side of the fence.
Step 2: We need to set up an equation based on the information given.
[tex] Perimeter\; of\; rectangle=\; 2(\; Longest \; side\; +\; Shortest \; side\; ) [/tex]
Substituting 20 for the perimeter of rectangle, x for Longest side and [tex] \frac{7}{2} [/tex] for the shortest side in the above formula, we get the below equation.
[tex] 2(x+\frac{7}{2} )=20 [/tex]
Step 3: Solving the equation.
[tex] 2(x+\frac{7}{2} )=20\\ Distribute \; 2 \; in \; the \; left \; side \; of \; the \; equation\\ \\ 2x+2 \cdot \frac{7}{2} =20\\ Simplify \; in \; the\; left\; side \; of \;the \;equation\\ \\ 2x+7=20\\ Subtract \; 7 \;on\; both \;sides \; of\; the \; equation\\ \\ 2x+7-7=20-7\\ Combine\; like \; terms\\ \\ 2x=13\\ Divide \; by \; 2\;on \; both\; sides\\ \\ \frac{2x}{2} =\frac{13}{2} \\ Simplify \; fraction\;on \; both \; sides\\ \\ x=6.5 [/tex]
Conclusion:
The length of longest side of the fence is 6.5 feet.
20 how much metal is needed to smelt a cubical metal box with outer side 12 inches long if the thickness of its walls should be exactly 3 inches?
Anybody have the answer to this?