In 2016, a maglev train in Japan traveled 1.1 miles in 1045 seconds.
A picture of a Maglev train is shown. The caption reads Maglev trains use magnets to hover above the tracks. This helps them reach extraordinary speeds.
Question 1
Part A
Find the speed of the train in miles per hour.+
Answer: ~3.8 mph (see below)
Explanation:What we know:
We need to find the speed of the train in miles per hour (mph)The train is traveling 1.1 miles per 1045 secondsThere are 3600 seconds in 1 hourHow to solve:
We need to find what number when multiplied with 1045, will equal 3600. The unknown will be a variable x, and the seconds will be represented with s. Then, we need to multiply this number with the value of the miles (m) to find how many miles are traveled in that hour (h).
Process:Finding X (in seconds)
Set up equation H = sx
Substitute 3600 = 1045x
Divide /1045 /1045
Solution 3.44497608 = x
Finding Miles
Set up equation mph = x(m/s)
Substitute mph = 3.44497608(1.1/1045)
Simplify mph = ~3.79/3600
Convert mph = ~3.8 miles per hour
Solution: ~3.8 mph (3.78947369 miles per 3600 seconds)
8th grade math help pls
Answer:
53
Step-by-step explanation:
14x+1+x=180
x=12
5(12)-7=53
18.84 cm
37.68 cm
28.26 cm
113.04 cm
Answer:
(a) 18.84 cm
Step-by-step explanation:
The circumference of a circle is given by the formula ...
C = 2πr . . . . . for radius r
A circle of radius 3 cm will have a circumference of ...
C = 2(3.14)(3 cm) = 18.84 cm
_____
Additional comment
The area is ...
A = πr² = 3.14(3 cm)² = 28.26 cm²
The units of area are not cm, but are cm². This question asks for circumference. The shading may be misleading.
yo can anybody help me with this pls...
Answer:
it has a positive slope, it crosses the y axis at about (0,5), and it has a slope of about 2.
Step-by-step explanation:
mr clean
Julie printed out a picture of each of the five members of her favorite band to decorate her bedroom door. Each picture measures 8 inches by 10 inches. Once decorated, how many square inches of Julie's door will be covered by these pictures?
A. 320 square inches
B. 400 square inches
C. 480 square inches
D. 180 square inches
Answer:
B. 400 square inches
Step-by-step explanation:
8x10=80
80x5=400
I did 80x5 since there are 5 pictures of her favorite band members.
So hence, the answer is 400 square inches
Thanks!
Mark me brainliest!
Yo can someone help me out
Answer:
The answer is D I think
2*9+4*7
Answer: The correct answer would be "2 x 9 + 4 x 7"
Step-by-step explanation:
The "sum" which is the plus sign in between 4 and 9 where you add the products
The sum of the "products of 2 and 9" would be 2 x 9
and product of four and seven would be 4 x 7
plz solve both if you do brainliest
3a–(10+5a)=54
(0.5x+1.2)–(3.6–4.5x)=(4.8–0.3x)+(10.5x+0.6)
Answer:
x = -1.5
Step-by-step explanation:
(0.5x+1.2)–(3.6–4.5x)=(4.8–0.3x)+(10.5x+0.6)
*I would first change any minus signs that are outside of the parenthesis to a plus sign. This is optional, not necessary. *
0.5x + 1.2 + (-3.6) + 4.5x = 4.8–0.3x + 10.5x + 0.6
*Now combine like terms on each side. *
5x + (-2.4) = 10.2x + 5.4
*move all Xs on one side.*
-5.2x = 7.8
*Divide both sides by -5.2 to get X by itself."
x = -1.5
Step-by-step explanation: BRAINLESSSSSSSSSSSSSSSSSSS
Estimate 12% of 77.
6
12
8
10
Answer:
new answer with estimate= 10 old answer= [tex]9.24[/tex]
Step-by-step explanation:
Use this method percent proportion
[tex]\frac{Percent}{100} = \frac{Part}{Whole}[/tex] or [tex]\frac{Percent}{100} = \frac{is}{of}[/tex]
Answer:
12% of 77
[tex]\frac{12}{100} = \frac{x}{77} = \frac{100x}{100} = \frac{924}{100} x = 9.24[/tex]
Steps:
1. Make a proportion with the method percent proportion.
2. After setting up numbers in proportion cross-multiply.
3. Make 100x because we don't know the value of x.
4. After multiplying 12 x 77 you should've gotten 924.
5. After cross-multiplying divide your new proportion.
6. [tex]x= 9.24[/tex] estimate = 10
now I'm not sure if those number in your question is your new estimate answer but since 9.24 is close to 10 your answer will be 10
Have a great day hoped it helped :)
Brainliest!
If the area of the following parallelogram is 165 square feet, what is the length of the base?
11 ft
33 ft
825 ft
121 ft
Answer:
C: 825
Step-by-step explanation:
Which data set does this stem-and-leaf plot represent? Stem | Leaf
------------------
1 | 55889
2 | 0
3 | 0339
4 | 15
A. 30, 39, 33, 15, 15, 18, 20, 33, 19, 41, 45, 18
B. 39, 33, 15, 18, 18, 20, 3, 19, 41, 45, 18
C. 15, 19, 19, 20, 30, 33, 39, 41, 45
D. 5, 5, 8, 8, 9, 0, 0, 3, 3, 9, 1, 5
Answer:
A.
Step-by-step explanation
Key 1 / 5 = 15
1 / 55889 = 15, 15, 18, 18, 19
2 / 0 = 20
3 / 0339 = 30, 33, 33, 39
4 / 15 = 41, 45
So the answer is A.
:)
Jamar is competing in a triathlon which requires him to run 5 miles, swim 2 miles, and then bike for 12 miles. Jamar starts his race at 8:00 AM sharp and it takes him 50 minutes to complete the running section. Jamar swims half as fast as he runs, but he bikes four times as fast as he runs. What time does Jamar finish the triathlon? Be sure to include AM or PM in your answer.
x^2 -5x + 7
If 1/3 x h(-8)
A warehouse contains 55 boxes. Then a truck delivers a number of boxes at 12:00 p.m. and the team begins to unload them immediately. By 3:00 p.m., the ware house contains 90 boxes. Suppose the boxes are unloaded at a constant rate. Write a formula that shows the total number of boxes in the warehouse as a function of time where Q(t) is the total number of boxes, and t is the time since noon.
Answer: t x 90
Step-by-step explanation: if 90 are in by 3:00 pm every hour 1.5/2 boxes are put in
Elapsed time is the sum of the time an event starts and the time it ends.
true of false
Answer:
True :)
Step-by-step explanation:
I hope this helps you :)
What is the IQR (interquartile range)?
Minimum value = 2
Q1=7
Median = 10
Q1=13.5
Maximum value = 18
Enter your answer in the box.
Answer: 16
Step-by-step explanation:
it’s 16 because there’s a median and a minimum value so 10 minus 2 is 8 x2 = 16
Margaret and Donovan are twins. They have each kept track of their heights every year since they were 5.
Donovan wrote an equation to track his height: h = 105 + 4.25(a - 5)
Based on the evidence shown, which statement correctly compares the twins' rates of growth?
Answer: B
Explanation:What we know:
Donovan's height can be expressed through the equation H = 105 + 4.25(a - 5) where H is height and a is ageMargaret's height is expressed through a given tableHow to solve:
We need to create a table for Donovan's height, compare it to Margaret's table, and then choose the appropriate statement. H will represent height, and a will represent age. B and c are constant values, and x is a coefficient to a-c
Process:Part 1 - DataSimplifying equation
Set up equation H = 105 + 4.25(a - 5)
Distribute H = 105 + (4.25a - 21.25)
Age 5
Set up equation H = 105 + (4.25a - 21.25)
Substitute H = 105 + [(4.25*5) - 21.25]
Simplify H = 105 + (21.25 - 21.25)
Simplify H = 105
Age 6
Set up equation H = 105 + (4.25a - 21.25)
Substitute H = 105 + [(4.25*6) - 21.25]
Simplify H = 105 + (25.5 - 21.25 )
Subtract H = 105 + 4.25
Solve H = 109.25
Age 7
Set up equation H = 105 + (4.25a - 21.25)
Substitute H = 105 + [(4.25*7) - 21.25]
Simplify H = 105 + (29.75 - 21.25)
Subtract H = 105 + 8.5
Solve H = 113.5
Continue for the following ages (8-10)
Part 2 - Table Comparison1. Create a table for both sets of data. Example:
______________________________________________
Age | 5 | 6 | 7 | 8 | 9 | 10 |
Mar. height (cm) | 101 | 105 | 109 | 113 | 117 | 121 |
Don. height (cm) | 105 | 109.25 | 113.5 | 117.75 | 122 | 126. 25 |
______________________________________________
2. Find which statement applies
2a. Margaret did not grow faster than Donovan
2b. Donovan did grow faster than Margaret
2c. Margaret and Donovan did not grow at the same rate
2d. There is enough data to draw a conclusion
Solution: BCheck:
We came to this conclusion by putting Donovan's data into a chart. We can check by writing an equation for Margaret's height. Then, use that equation with Donovan's to see the difference
Margaret's equation:
H = 4a + 81
Comparison (using ages 8 & 9):
8:
H= 4a + 81 | H = 105 + (4.25a - 21.25)
H = (4*8) + 81 | H = 105 + [(4.25*8) - 21.25)
H = 32 + 81 | H = 105 + 12.75
H = 113 | H = 117.75
9:
H = 117 | H = 122
________________________
113 < 117.75
117 < 122
Because the statement still holds true, answer B is correct.
Please help!
Estimate both:
903.6 ÷ 25.1 =
and 760.38 ÷ 0.38
Answer:
1. 36
2. 2000
Step-by-step explanation:
Step-by-step explanation:
903.6 ÷ 25.1 = 36 (exact answer).
900 ÷ 30 = 30 (estimated). As 903.6 near to 900 and not to 1000, and 25.1 near to 30 and not to 25 the equation is 900 ÷ 30 = 30.
760.38 ÷ 0.38 = 2001 (exact answer).
In the estimated answer Im not so sure about it so I leave you four choices.
1. 800 ÷ 0.40 = 2000 (rounded to the nearest ten)
2. 800 ÷ 0.00 = Infinity (0.38 close to a whole)
3. 800 ÷ 1 = 800 (0.38 not close to a whole)
4. 800 ÷ 40 = 20 (possibly the wrong answer not even close to 0.38)
Which expression is equivalent to 62
Answer:
If it needs to be from a certain set of questions can you post those but an example of a expression equal to 62 is
- 30+31
-32x2
-62x1
-0.62
-31/50
-62/100
Step-by-step explanation:
For a moving object, the force acting on the object varies directly with the object's acceleration. When a force of 20N acts on a certain object, the acceleration of the object is 10 m/s2. If the force is changed to 6N, what will be the acceleration of the object?
Answer:
7 m/s square root 2
Step-by-step explanation:
brainliest if correct
Answer:
17: C
16: B
14: A
15: D
Step-by-step explanation:
17: 12 / 8 = 1.5 = 1 1/2
16: 3 / 4 = 0.75 = 3/4
15: 7 / 4 = 1.75 = 1 3/4
14: Process of Elimination.
Answer:
for 17. the answer is C
for 16. the answer is B
for 14. the answer is A
for 15. the answer is D
Step-by-step explanation:
hope this helps!
Answer ASAP
(05.02)How many triangles can be made if one angle is 95° and another angle is obtuse? 1 2 More than 2 None
Answer:
D. None.
Step-by-step explanation:
Say the obtuse angle is 100 degrees. Since the sum of all angles in a triangle cannot be bigger than 180, it's not possible because 195 (100+95) is greater than 180 degrees. Hope this helps.
A dog is tied to a stake in the ground and runs around in a circular pattern. His running section is a circle with a diameter of 15 feet. In terms of pi, what is the area of the section that the dog runs?
Answer:
56.25π ft²
Step-by-step explanation:
a = πr²
d = 15 ft
r = 15 ft/2 = 7.5 ft
a = π × (7.5 ft)²
a = 56.25π ft²
Answer:
56.25π ft²
Step-by-step explanation: this is the correct answer
Help with 1-18 all i need work If answer Ill give brainlyest I just need help please need answers fast
Answer:
1, 4
Step-by-step explanation:
I did this in like year 8 and I cba to do all them but what u do is u go to the origin and count how many boxes there are to the point e.g A and the count them to the whatever the degree is e.g 90 but. 1, 4 would be the answer to the first one if its done how its meant to be but I don't know why they made it like that cause I did it differently. I'm just waff ling but yh.
What is the volume of right cylinder rounded to the nearest whole cubic centimeter? Show work to support your answer.
Answer:
33.76
Step-by-step explanation:
5.3 x 2squared x 3.14
10.6 for the top 10.6 for the bottom and 12.56 for the area so you would have 33.76 if you added it all up!
5x-28=232 whats the answers please help.
Answer :D
x = 52
Question explanation:
1. Add 28 to both sides:
[tex]5x - 28 = 232[/tex]
[tex]5x - 28 + 28 = 232 + 28[/tex]
2. Simplify:
[tex](adding, add again) = 5x =260[/tex]
3. Divide both sides by the same factor
[tex]5x = 260[/tex]
[tex]\frac{5x}{5} = \frac{260}{5}[/tex]
4. Cancel terms that are in both the numerator and denominator.
5. Divide the numbers.
x = 52
I hope this is correct - Answered by Lilo
Answer:
52
Step-by-step explanation:
Victoria's family took a road trip to Mount Rushmore. Victoria slept through the last 68% of the trip. If the total length of the trip was 1000 miles, how many miles had they travelled when Victoria fell asleep?
You are having a pizza - making party.
You will need 6 ounces of dough and 4 ounces of sauce for each person ( including yourself, the host ) .
Once you have a total count of guest, you buy exactly the needed amount of all the ingredients . The dough and sauce that you buy weigh 130 ounces all together.
1. How many ounces of dough did you buy?
2. How many ounces of sauce did you buy?
3. Num. Guest 0ω0
Worth 10 points . . .
Answer:
e
Step-by-step explanation:
Answer:
1. 78 ounces
2. 52 ounces
3. 12 guests
Step-by-step explanation:
1. Consider 6 ounces of dough and 4 ounces of sauce for each person as a set. So 1 set will have 10 ounces. Then, we divide the total ounces, 130 ounces by 10, which will give us 13 sets or people.Then, to find the ounces of dough,just multiply 6 ounces by 13 which will give us 78 ounces.
2. Similar to previous one, just multiply 4 ounces by 13 which will give us 52 ounces or simply minus 78 ounces from 130.
3. We obtained 13 sets(people) from number 1. Minus one (the host, yourself) from 13, we'll get 12.
How much paper will be needed to cover the rectangular pyramid shown?
A. 32 cm2
B. 48 cm2
C. 84 cm2
D. 96 cm2
Answer:
84 cm^2
Step-by-step explanation:
y=6x;(3,24) tell whether the ordered pair is a solution of the equation
Answer: no
Step-by-step explanation: no the ordered pair is not a solution since (3,24) when plugged into the equation gives you 24=18 which is not equal
Parallel Lines and Paris of Angles
I dont understand the question please explain what i have to do and answer it thank you :)
Tell me if the image is blurry in the comment section not the answer section Thankyou
Answer:
The explanation on how to do them is down below. If you have anymore questions pls feel free to ask
Step-by-step explanation:
So for number one you just need to state the sentence under the lines back wards but starting Lines m and n......
For number two name two angles that are inside the parallel lines and for three the opposite name two that are basically verticle outside of the parallel lines.
For number four they are across from each so they are verticle and since they are verticle they are concurrent so the m of 2 is 125.
In number 5,4 and 7 are corresponding so the are equal.
In number 6 the angles are alternate interior so they are congruent.
In number 7, the angles are corresponding so they are congruent.
In number 8, the angles are alternate exterior so they are congruent.
In number 9, the angles are are verticle so the are congruent.
In number 10, the answer is supplementary because on the top and bottom they add up to 180 degrees. And it part b 2 and 3 are adjacent and supplementary, so you subtract 119 from 180 and you get 61.