a 4000 pound car driving at 40 miles/hour has how many times the kinetic energy of another 4000 pound car driving at 10 miles/hour.
The comparison of the kinetic energy of the given bodies is required.
The first car has 16 times more the kinetic energy of the second car.
Kinetic energym = Mass of car = 4000 pound
[tex]v_1[/tex] = Initial velocity of car = 40 miles/hour
[tex]v_2[/tex] = Final velocity of car = 10 miles/hour
The mass of the car is constant so we have the relation
[tex]K\propto v^2[/tex]
Thus,
[tex]\dfrac{K_1}{K_2}=\dfrac{v_1^2}{v_2^2}\\\Rightarrow K_1=K_2\dfrac{40^2}{10^2}\\\Rightarrow K_1=16K_2[/tex]
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You know that multiplication can also be expressed as repeated addition. Why is it more difficult to use repeated addition when multiplying two mixed numbers than it is to use repeated addition when you are multiplying a mixed number by a whole number?
Answer:Let's start with the underlying fact. Multiplication simply is not repeated addition, and telling young pupils it is inevitably leads to problems when they subsequently learn that it is not. Multiplication of natural numbers certainly gives the same result as repeated addition, but that does not make it the same.
Step-by-step explanation:
(05.03)Bev has to cut her grandma's grass this weekend and wants to know exactly how much area she will be cutting. Calculate the area of the polygon. Be sure to show all your work and explain your answer.
+17 pts BRAINLIEST ONLY IF FAST
PLZ HELP ME PLZ PLZ ..................
The answer is 2.5
I saw this question though, that's weird lol
What is the center of the data in the dot plot?
Number of Science Homework Assignments Each Week
A dot plot going from 0 to 5. 0 has 3 dots, 1 has 2 dots, 2 has 5 dots, 3 has 4 dots, 4 has 1 dot, and 5 has 6 dots.
2
2.5
3
5
Answer:
C. 3
Step-by-step explanation:
Have a wonderful day!
Just answer b and c, please
Answer:
B. is 2 cups to 4 cups and in simple form 1 cup to 2 cups
C. is she did not use the same ratio
hope this helps give brainliest if its good.
Step-by-step explanation:
Brandi has equal numbers of hip-hop songs and country songs loaded on her personal music player. She has it set to play songs on a random shuffle. Suppose Brandl is designing a simulation that could be used to estimate the probability that the next three songs to play are all hip-hop songs Which simulation design could Brandi use to estimate the probability?
A. Coin Let heads (H) = hip-hop Let tails (T) = country Toss coin three times. Repeat
B. Random digits Let 0.1phop Let 2.3.4.5.6 = country Select two random digits Repeat
C. Number cube Let 1 = hip-hop Let 2 = country Roll cube three times Repeat
D. Nurbe cube let 1 = hip-hop let 2 = country Roll cube four times. Report
Exit
What is the approximate area of the figure below?
A. 27 square units
B. 29 square units
C. 30 square units
D. 36 square units
The approximate area of the actual figure is 29 square units
How to approximate the area?From the complete question, the figure has the following shapes and dimensions:
Rectangle: 4 units by 5 unitsTriangle: Base = 3 units; Height = 6 unitsThe area of the figure is then calculated using:
Figure = Area of rectangle + Area of triangle
So, we have:
Figure = 4 * 5 + 0.5 * 3 * 6
Evaluate
Figure = 29
Hence, the approximate area of the figure is 29 square units
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I need help Label each statement True or False...
Answer:
False, False, True
I could be wrong. I hope not, though.
All of the following represent the same set of numbers except
positive integers
whole numbers
natural numbers
counting numbers
Let us define each :
1. Natural numbers : the positive integers (whole numbers) 1, 2, 3, etc., and sometimes zero as well.
2.Whole numbers: Whole Numbers are simply the numbers 0, 1, 2, 3, 4, 5, ... (and so on)
3. Positive integers: The positive integers, z+ , consist of the whole numbers beginning with one.
4. Counting numbers: Any number you can use for counting things: 1, 2, 3, 4, 5, ... (and so on). Does not include zero.
So we can say that whole numbers is the odd one out, since it includes 0 and others dont.
The answer is whole numbers because only whole numbers are the set that starts from zero.
The inequality x ≥ 25 can be used to represent the distance an athlete runs each week, where x is the distance in miles.
Which of these statements best describe the distance run by the athlete each week?
1. The distance is more than 25 miles.
2.The distance is no more than 25 miles.
3.The distance is at least 25 miles.
4.The distance is less than 25 miles.
Answer: 3
Step-by-step explanation:
because that symbol means equal to or greater than/ equal to or less than depending which way its facing.
Which two expressions are equivalent?
A. (18 ÷ y) + 10 and 10 + (y ÷ 18)
B. (10 - 6) ÷ y and 10 - (6 ÷ y)
C. 4 + (3 ⋅ y) and (4 + 3) ⋅ y
D. 12 - (y ⋅ 2) and 12 - (2 ⋅ y)
Answer:c
Step-by-step explanation:
Please help!!!!!! I will give brainliest!
Answer:
37 sq. ft.
Step-by-step explanation:
16+(42/2)=16+21=37
Answer: A.) 37
Step-by-step explanation: You add then multiply to get to 37
\
2) Based on the data represented in the double line graph. Which statement is true? A) At 15 almost 9 times as many students worked. B) At 17 almost 4 times as many students worked. Eliminate C) At 17 almost 4 times as many students did not worked. D) At 16 the same number of students worked and did not work.
Answer:
b
Step-by-step explanation:
Coach Hutchinson is the basketball coach at school. She asks players to record their heights. The histogram shows the data she has collected. Heights of Basketball Team Members Number of players 87-70 71 - 74 Height (inches) What unit of measure is used in the study? A. Number of players B. Feet C. Inches D. Number of observations
Answer:
15 pionts t
Step-by-step explanation:
thanks. .dssss
Answer:inches
Step-by-step explanation:i just did the quiz and got it correct!
A rectangular city lot has an area of 1,000 square meters. If the length of the lot is 10 meters more than twice its width, find the length and width. Write the quadratic equation.
PLS I NEED THIS FOR AN RA
Answer:y=20
Step-by-step explanation:
Answer:100
Step-by-step explanation:
Which models represent the sum?
1.1 + 0.6
Select each correct answer.
Donna made 2 identical necklaces, each having beads and a pendant. The total cost of the beads and pendants for both necklaces was $10.20. If the beads cost $3.20 for each necklace, how much did each pendant cost?
Ravi has bought 18 pounds of dog food. He feeds his dog 2/3 pounds for each meal. For how many meals will the food last?
Write you anwer in the simplest form.
Answer:
I believe it's 6
Step-by-step explanation:
so so so soooooo sorry if it's wrong good luck! tho AGAIN sorry
What is the volume of this container
Only answer this if you have an explanation and if you know what the answer is.
Dont answer if you dont know also no guessing. plz
Answer:
B. 3
Step-by-step explanation:
You can use online calculators for this like symbolab.com for steps! Here is your specific question answered with steps: https://www.symbolab.com/solver/step-by-step/%206%20%E2%88%92%203%5E%7B3%7D%20%5Cdiv%5Cleft(2%5E%7B2%7D%20%2B%205%5Cright)%20
PLEASE HELP!!! Find area of each square
Answer:
25 for the top right, 16 for the left, 9 for the bottom
Step-by-step explanation:
area = length times width
Answer:
Step-by-step explanation:
Area of square = side * side
A1 = 4 * 4 = 16 m²
A2 = 5 * 5 = 25 m²
A3 = 3 * 3 = 9 m²
A fitness club is having a special sale where you pay $27 to join plus a $8.00 monthly fee. You have $75.00 to spend. Write and solve the equation to determine how many months you can use the fitness club.
Answer:
6 months
Step-by-step explanation:
27 + 8x = 75
x = months which is what you're trying to figure out
1. subtract 27 from 27 and 75
2. then you have 8x = 48
3. divide both sides by 8 so x=6
4. 6 months
Answer:
27 + 8 x 6 = 75$. You can spend 6 months at the fitness club.
Step-by-step explanation:
Ms. Savage’s Art Club is making a mural on a wall in the Annex by reproducing a painting on a different scale. The original painting is 12 1/4 inches long and 6 inches wide. The mural will cover an entire wall that is 183.75 feet long and 90 feet wide. What will be the scale that relates the original painting to the mural?
Explain, please
Answer:
4 feet
Step-by-step explanation:
i think
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Answer:
Answer is A.) 3
Step-by-step explanation:
You substitute 8 for n and complete the rest of the operation
8-5=3
Answer:
Your answer will be A). # because 8-5=3
Step-by-step explanation:
:-)
help wit 3 and 4 for brainliest
Answer:
Answer for num.4 is B
For number 3 the the rate of change for function A is 10
The rate of change for function B is -5
and the highest function is Function A!
Have a great day!!! < 3
Step-by-step explanation:
I need help what does this mean
(6th grade math)
Answer:
Step-by-step explanation:
x - [tex]\frac{1}{2}[/tex] ≤ 4
x ≤ 4 + [tex]\frac{1}{2}[/tex]
x ≤ [tex]\frac{8+1}{2}[/tex]
x ≤ [tex]\frac{9}{2\\}[/tex]
can someone please help me with thus
Answer:
I believe the answer is 15.
Step-by-step explanation:
Please help!!!!!!!!!!!!!! giving brainlist
The picture represents a final step used in...
constructing a perpendicular bisector
constructing congruent angles
constructing angle bisectors
constructing a congruent segment
Answer: congruent segment
Step-by-step explanation: it is the same segment on a different radius of a circle
The picture represents a final step used in constructing a congruent segment. The correct option is D.
What is congruency?In geometry, two figures or objects are said to be congruent if their shapes and sizes match, or if one is the mirror image of the other. The meaning of congruency is that the two shapes are similar as well as equal in size.
In the given two figures the two angles are drawn. From the first angle, the measure of the second image is drawn. In the final step of the construction, the scale is used to draw the segment of the line of exact same length as the previous image. So it is a congruent segment of the line.
Therefore, the picture represents a final step used in constructing a congruent segment. The correct option is D.
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