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Fudgin [204]
2 years ago
5

Two​ trains, Train A and Train​ B, weigh a total of 318 tons. Train A is heavier than Train B. The difference of their weights i

s 178 tons. What is the weight of each​ train?
Mathematics
2 answers:
lord [1]2 years ago
8 0

Train A is 178 and Train B is 140
alukav5142 [94]2 years ago
6 0

Answer:

ohyou already got an answer

Step-by-step explanation:

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Tell which transformation is shown by the change in ordered pairs ​
iren [92.7K]

Answer:

Translation

Step-by-step explanation:

Transformation is the movement of objects in the coordinate plane. It can be through any of translation, reflection or rotation. The kind of transformation that occurs in ordered pairs is translation e.g if the ordered pair is (1, 4) x = 1, while y = 4. if it is translated we have (4, 1) such that x is now 4 while y is 1

4 0
3 years ago
A cylinder shaped can needs to be constructed to hold 300 cubic centimeters of soup. The material for the sides of the can costs
oksano4ka [1.4K]

Answer:

Step-by-step explanation:

Cost = Area Cylinder body* cost * 0.03 cm^3 + Area of 2 lids*cost 0.06 of cm^3

Volume = 300 cm^3

Volume = Base *h  

Volume = pi * r^2 * h = 300

h = 300/(pi * r^2 )

Area material =  2*pi * r * h * 0.03 + 2 pi r^2 * 0.06

Area material = 0.06*pi * r * 300/(pi* r^2) + 0.12 * pi * r^2

dmaterial/dr = (-1)18 r^-2 + 0.12 pi * 2*r

dmaterial/dr = -18 r^-2 + 0.24 pi * r

The minimum occurs when the right side = 0

18/r^2 = 0.24 *pi r

18 = 0.24*pi * r^3

18/(0.24 * pi) = r^3

23.89 = r^3

cube root (23.89) = cuberoot(r^3)

r = 2.88 cm

h = 300/pi * r^2

h = 300/(3.14 * 2.88^2)

h = 11.52

This isn't much of a check but we can try it.

Volume = 3.14 * 2.88^2 * 11.52

Volume = 302.01 which considering all the rounding is pretty close.

Here's a graph that confirms my answer.

3 0
2 years ago
Jason can travel 24 3/4 miles in 1/2 hour. What is hi average speed in miles per hour?
eduard

Answer:

49 1/2 miles per hour

Step-by-step explanation:

To determine the average speed, we take the miles and divide by the hours

speed ÷ hours

24 3/4 ÷ 1/2

Change the mixed number to an improper fraction

24 3/4 = (4* 24+3)/4 =99/4


99/4 ÷ 1/2

Copy dot flip

99/4 * 2/1

99/2

Change to a mixed number

2 goes into 99   49 times  (49*2 = 98)  with 1 left over

49 1/2 miles per hour

3 0
3 years ago
Susan has Rs 562.50 and Jean has Rs 315.75. How much they have altogether. ​
AURORKA [14]
Answer: 562,5+315,75=878,25
6 0
2 years ago
Which is bigger 12 or -12
FinnZ [79.3K]

Answer:

12

Step-by-step explanation:

12>0>-12

7 0
2 years ago
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