Answer:
1) Thermal energy increases
2) Kinetic energy from friction -> thermal energy
Step-by-step explanation:
When you rub your hand against a rug really hard, there's heat that's created by kinetic energy (movement energy).
Kinetic energy can be expressed in thermal energy.
Which sequence of transformations takes triangle A to triangle B?
Reflection over the x-axis and translation 2 units down
Reflection over the y-axis and translation 2 units down
Translation 12 units right and 90o rotation about the origin
Translation 2 units down and 90o rotation about the origin
needs to be explained
Answer:
B
Step-by-step explanation:
92 x 49 = 4508 which is the area of the rectangle because you do length times height.
To Find the area of a circle you need to find the radius which is half of your diameter which is 20
20/2=10
Then for the area of your circle the formula is Pie r squared (π r^2)
Plug into your calculator π x 10^2 to get 314.16
Finally you subtract 314.16 from 4508 to get your answer 4193.84
Since on the sheet it looks like you have to round it would just round up to 42,000ft^2 which is B
The 10-second barrier in the 100-meter dash was first broken in the 1968 Olympics, when the winning time was 9.95 seconds. A gym teacher ran the 100-meter dash in 14.7 seconds. How much faster was the 1968 Olympic time than the gym teacher’s time
HELP
Answer:
4.75 seconds
Step-by-step explanation:
14.7 - 9.95
Answer:
The Olympian completed the 100-meter dash 4.75 seconds faster than the gym teacher. You could also say he was 3.25 meters per second faster.
Step-by-step explanation:
To get 4.75 I just subtracted and found the difference between both of their times.
To find the difference between their speeds, I divided 100 by each time to get each person's distance per second. The olympian's speed was 10.05 meters per second and the gym teacher's speed was 6.80 meters per second. To find the difference between these, I subtracted the same way I did with the time difference.
Kelvin went skiing with his family. They kept track of how long they each skied without falling. The table lists the longest time that each family member skied without falling.
Person Time Skied
(seconds)
Kelvin 223
Lori 55
Vanessa 265
Devon 172
Celia 112
Arnold 356
Part A
Kelvin wants to know whether he skied without falling more than twice as long as anyone else in his family. His dad tells him that he can check by using the inequality 2f < 223, where f is the time skied in seconds for each person. Plug the values for the time skied by each person into the inequality to find the answer.
Kelvin did not skied without falling more than twice as long as anyone else in his family.
Answer:
He only skied more than Lori.
Step-by-step explanation:
Lori*2: 110
Vanessa*2: 530
Devon*2: 344
Celia*2: 224
Arnold*2: 712
Decide whether each equation is true or false, and explain how you know.
9⋅9⋅3=35
True
False
:
7+7+7=3+3+3+3+3+3+3
True
False
:
17⋅17⋅17=37
True
False
:
41=4⋅1
True
False
:
6+6+6=63
True
False
:
34.7985347985 rounded to the nearest tenth
Answer:
34.8
Step-by-step explanation:
According to the diagram shown, a plane's wing is 300 m above the ground sighted at a position 400 m away. What is the length of the side labeled x?
PLEASE HELP!!!!!!!!
A 500 m
B 350 m
C 100 m
D 700 m
Answer: 500
Step-by-step explanation:
300 squared plus 400 squared is x squared so just do the square root of 300 squared plus 400 squared
Doubling the difference between a number and 4 is 6 more than the number.
Answer:
The number is 14
Step-by-step explanation:
Help! I got 7 but it told me it was wrong?
Answer:
-7
Step-by-step explanation:
it is -7 you have to get X by yourself
3 = 10 + x
subtract 10 from each side
x = -7
Answer: -7
Step-by-step explanation:
10+x=3 subtract 10 from both sides, to isolate x
x=3-10
x= -7
Hope this helps!
If the length of a basketball court is 32 meters and the width is 9 meters, what is the diagonal of the basketball court? Round to the nearest tenth, if needed.
PLEASE HELP!!!!!!!!!!!!!!!!!1
SOMEONE? PLEASEEEEEEEEEEEEE I DONT KNOW AB THIS
Answer:
Love your pfp
Step-by-step explanation:
can someone help me with this project? the words are supposed to be like a valentine love thing. example: you+me=us
How do I solve this proportional problem?
Phone 1 has the length of 2.6 and height of 5.4
Phone 2 has the height of 6.21 and the length of _____
What is the length of the Phone 2? Keep in mind that the answer is gonna to proportional.
The length of the phone 2 is 2.99 units.
Given data:
Phone 1 has the length of 2.6 and height of 5.4
Phone 2 has the height of 6.2 units.
The length of the phone 2 is represented as L.
So, the lengths and heights are in proportion.
The proportional equation is given as y ∝ x
And , y = kx where k is the proportionality constant
So, [tex]\frac{6.2}{5.4} =\frac{L}{2.6}[/tex]
On cross multiplying:
L = 1.15 * 2.6
L = 2.99 units.
Hence, the length is 2.99 units.
To learn more about proportion, refer:
https://brainly.com/question/7096655
#SPJ6
Find the mean absolute deviation of the data set below. Round the answer to the nearest tenth if necessary. 22, 30, 18, 25, 15, 10
Please answer fast!!
Answer:
Mean Absolute Deviation (MAD): 5.6666666666667
Step-by-step explanation:
your welcome
Answer:
The answer is 16.6, I think. I hope this helps!
Step-by-step explanation:
Disclaimer I don't know 100%
Please help it’s 11:10 pm tysm if you help :,)
Answer:
1. A
2. C
Step-by-step explanation:
Add all of the values together.
0.5 + 0.8 + 0.6 + 0.7 + 0.4 = 3
Find the average.
3 / 5 = 0.6
Add on the extra values and find the average to determine if it changes or not.
All of them change but A.
Therefore, the answer is A.
-
Mean:
Add all the values together.
5 + 10 + 12 + 10 + 8 + 3 = 48
Find the average.
48 / 6 = 8
Median:
Group the numbers from lowest to highest.
3, 5, 8, 10, 10, 12
Find the middle number.
8 & 10
The middle of 8 and 10 is 9.
Therefore, the median is 9.
Mode:
Find the most common number.
It is 10.
Therefore, the mode is 10.
Match your numbers in order with the choices.
It fits C.
Therefore, the answer is C.
pls ill give brainelist
Answer: 138
Step-by-step explanation: If you subtract 430 by 170, you get 260. Then, when you add 260+284, you get 544. Then when you subtract 852 by 544, you get 308. Finally, subtracting 308 by 170 gets you to your final answer, 138. Hope that helps, have a great day :)
Which function is equivalent tof(x)=4x(to the power of 2)+12x+9
Answer:
The other function that matches this function is...
[tex](2x+3)^{2}[/tex]
Step-by-step explanation:
What is the value of m in this proportion?
1/5/2/3=1/4/m
Answer:
m=15/2
Step-by-step explanation:
The Formula for Percent Proportion is Parts /whole = percent/100. This formula can be used to find the percent of a given ratio and to find the missing value of a part or a whole.
HHHHHHHHHHHEEEEEEEEEEELLLLLLLLLLLLLLLPPPPPPPPPPPPPPPPPPPPPP
help me quick please I'll give brainliest to the person with the correct answer
Answer:
(7, 27) is the correct answer
Step-by-step explanation:
I did it in my head but I'm sure it's correct cause the first two points are on the same x-axis but the numbers for the y-axis are different which means that the answer has to have one of the same y-axis numbers from one of the first two y-axes this process singles it out to (7, 27).
please find the answer you dont need to show your work but you can
GIVING BRAINLIEST FOR BEST ANSWER!
Solve five times three fourths.
Leave your answer as an improper fraction.
A) Fifteen twentieths
B) Twelve fifths
C) Fifteen fourths
D) Eight halves
Answer:
C
Step-by-step explanation:
5 * 3/4
5/1 * 3/4
15/4
Answer: c
Step-by-step explanation:
Find the median and mode(s) of the data.
1. 1,3,5,6,7,9,11
Answer:
Median: 6
Mode: No Mode
Step-by-step explanation:
To find the median, we line the numbers up in order (which it already is) and find the middle number.
In this equation, there are 3 numbers on each side and 6 in the middle so that is our median
To find the mode, we look for the most commonly used number
Since all of the numbers are used once, there is no mode
Hope this helps, have a great day, and please award brainliest
help and quick please
Answer:
I think it's 68
Step-by-step explanation:
hope this helps
Forest rangers at a state park have observed a decline in the rate of trees per acre over a 5 year period. At the beginning of their observations, there was an average of 48 trees per acre. At the end of the 5 year period, there was an average of 42 trees per acre. If this trend continues how many trees per acre will there be in 4 1/2 years from the end of the 5 hear observation period?
Answer:i think it would be 38 and a half
Step-by-step explanation:
aughhhh i suck at this topic
Answer:
x = 18
Step-by-step explanation:
The given angle is a right-angled triangle.
Such triangles have an angle that equals 90°.
The square attached at the base represents 90°. [Whenever you such a square between two sides, simply put the angle between those sides equal to 90.]
So, the points we know about this triangle:
One angle is = 90Another angle given in the question is 72°.*Property*
The sum of all angles in a triangle = 180
==> 90 + 72 + x = 180
==> 162 + x = 180
==> x = 180 - 162
==> x = 18
PLSSS help, trig problem....
Find the missing length of the figure.
Answer:
x=37mm
Step-by-step explanation:
Pythagorean theorem:-
[tex]x^2=\sqrt{(13^2-5^2)}^2+(35)^2[/tex]
[tex]x^2=12^2+35^2[/tex]
[tex]x^2=144+1225[/tex]
[tex]\sqrt{x^2}=\sqrt{1369}[/tex]
[tex]x=37[/tex]
~
Hope this helps!
Plssssss someone help solve this
Answer:
I would say B
Step-by-step explanation:
leave a thx
Please lend me a hand thanks
Answer:
The answer is 9
Step-by-step explanation:
A linear equation is an equation of a straight line. To solve linear equations, it is important to keep the following key concepts in mind:
Maintain balance of the equation by applying the same operations to both sides of an equation
Isolate for the variable by collecting like terms
Use inverse operations to rearrange an equation
Answer:
x must be 9 (Answer C).
Step-by-step explanation:
The two angles marked in red are "vertical angles," and, as such, they are equal: 5x - 8 = 2x + 19.
Combining like terms results in 3x = 27, and therefore x must be 9 (Answer C).