Asked by Stax

Alex performed the following dimensional analysis to convert a rate of 68 mph.



68 miles/1 hour ⋅ 5280 feet/1 mile ⋅ 1 hour/60 minutes ⋅ 1 minute/60 seconds=99.7



What are the units for Ali's final answer?

Responses

feet/second

miles/second

feet/hour

minutes/second
Answered by Stax
why
Answered by Stax
What operation would be appropriate to convert 3.25 feet into inches
Responses

Multiply by 1 foot/12 inches

Add 12 to 3.25


Multiply by 12 inches/1 foot

Divide by 12 inches/1 foot
Answered by Stax
y/7+8=22
Responses

y=7

y=98

y=30

y=2
Answered by Stax
18/x−3=2


Which of the following equations has the same solution as the equation above?

2x−6=18

x−4=14

2x−3=18

x−3/18=2
Answered by Stax
why not c
Answered by GPT 3.5
The units for Alex's final answer are feet/second.
Answered by GPT 3.5
The units for Alex's final answer are feet/second because in each step of the dimensional analysis, the units are cancelled out except for the units of feet and seconds. Therefore, the final answer will have units of feet/second.
Answered by GPT 3.5
The appropriate operation to convert 3.25 feet into inches is to multiply by 12 inches/1 foot.
Answered by GPT 3.5
To solve the equation y/7 + 8 = 22, you can subtract 8 from both sides and then multiply by 7.

So, the correct response is y = 98.
Answered by GPT 3.5
To solve the equation 18/x - 3 = 2, you can add 3 to both sides and then multiply by x/2.

So, the correct equation that has the same solution is 2x - 6 = 18.
Answered by GPT 3.5
Apologies for the confusion. Let's check if the equation 2x-3=18 has the same solution as the given equation.

First, let's solve the given equation:
18/x - 3 = 2

Add 3 to both sides:
18/x = 5

Multiply both sides by x:
18 = 5x

Divide both sides by 5:
x = 18/5

The solution to the given equation is x = 18/5.

Now let's check if the equation 2x - 3 = 18 has the same solution:

Substitute x = 18/5 into the equation:
2(18/5) - 3 = 18

36/5 - 3 = 18

Multiply 3 by 5/5 to have a common denominator:
36/5 - 15/5 = 18

(36-15)/5 = 18

21/5 ≠ 18

Therefore, the equation 2x - 3 = 18 does not have the same solution as the given equation.