Until a train is a safe distance from the station it must travel at 5 m/s. Once the train is on open track it can speed up to 45 m/s. If it takes a train 8 seconds to reach 45 m/s, what is the acceleration of the train? (Round your answer to the nearest whole number.)A) 4 m/s2
B) 5 m/s2
C) 6 m/s2
D) 7 m/s2
Answers
Explanation:
To find acceleration, we find the ratio of the change in velocity to the change in time. The change in velocity is 45-5=40. It takes 8 seconds, so the change in time is 8. 40/8=5.
change time=8
change speed=45-5=40
40/8=5
5 m/s^2 is acceleration
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Answers
Put them in order first
23,39,40,40,43,50
Well in middle is 40 for both sides
So to solve median for this you'd add the two middle numbers together since there is even set of numbers.
40+40 =80 then divide by 2
80÷2=40
Median = 40
*Follow This Example for any other even sets of numbers for Median*
23, 39, 40, 40, 43, 50
So the middle number is 40.
u/p +u/q = m, if, p is not equal to -q
Answers
Final answer:
To solve the equation u/p + u/q = m, where p is not equal to -q, we can follow these steps: multiply both sides by pq, factor out the common variable u, and then solve for u by dividing both sides by (q + p) and we getu=mpq/(q+p) .
Explanation:
In this equation, u is a variable and p and q are different values. So, the equation can be rewritten as:
u/p + u/q = m
To solve this equation, we need to get rid of the fractions. We can do this by multiplying both sides of the equation by pq:
uq + up = mpq
Now, we can factor out the common variable u:
u(q + p) = mpq
Finally, we can solve for u by dividing both sides of the equation by (q + p):
u = mpq / (q + p)
Learn more about Solving Equations here:
#SPJ1
Answers
Answer:
12.11 gallons
Step-by-step explanation:
Ciara's car used gas on 160 mile road trip = gallons
= gallons
Ciara's car used gas on 1 mile road trip =
=
= gallons
Ciara expect to use on a 250 mile road trip =
=
=
≈ 12.11 gallons
Ciara should expect to use or 12.11 gallons of gas.
Answers
Show your work :)
Answers
2.) Class B is scores are spread out more.
mm2
Answers
so the surface area=2 times(8 times 10)+(2 times (32 times 10))+(2 times (8 times 32))=2 times 80+2 times 320+2 times 256=1312
if halved
just divide each by 2
(2 times 4 times 5)+(2 times 16 times 5)+(2 times 4 times 16)=(2 times 20)+(2 times 80)+(2 times 64)=40+160+128=328
the new surface area is 328 mm^2