Thirty times the square of a non-zero number is equal to eight times the number. what is the number?
Answers
I can divide
each side by 'x': 30 x = 8
Then divide
each side by 30: x = 8 / 30 = 4/15 .
Check to see if it works:
Does 30 (4/15)² = 8 (4/15) ?
Well, (4/15)² = 16/225
30 · 16/225 = 480/225 = 32/15
and
8 · 4/15 = 32/15 yay !
let x the unknowed number,
30*x²=8*x
==> 30x=8 (for x ≠0)
==>x=8/30
==>x=4/15
Confusion dans la traduction mentale désolé.
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Answers
Answer:
5.7 seconds
Step-by-step explanation:
Lets assume that 77 has units of meters (m).
The expression the relates time(T), speed(S), and distance(D) is:
D = S*T
We are given S = 13.5 m/s and D = 77m
D = S*T
77m = (13.5 m/s)*(T)
T = (77 m)/(13.5 m/s)
T = 5.7 seconds
Final answer:
To find the time it would take for a rhino stampede running at a speed of 13.5 m/s to travel 77 meters, we use the formula Time = Distance/Speed, which gives us a result of approximately 5.7 seconds.
Explanation:
This is a classic physics problem where you are asked to calculate the time. The question is asking for the time it would take for a rhino stampede running at a speed of 13.5 m/s to reach a certain distance, which is 77 meters.
To find the time, you need to use the formula for time, which in terms of speed and distance is: Time = Distance/Speed.
Step 1: Plug in the given values into the formula. So Time = 77m / 13.5 m/s.
Step 2: Do the division. The result comes out to be around 5.7 seconds. Therefore, it will take about 5.7 seconds for the rhino stampede to reach 77 meters.
Learn more about Time Calculation here:
#SPJ11
Answers
Answers
Answer:
Talia swims about 1.52 miles per hour faster than Alina.
Step-by-step explanation:
Alina is able to swim at a rate of about 2.5 miles per hour.
Talia is able to swim at a rate of 1.8 meters per second.
First we will change meters per second into miles per hour.
1 mile= 1609.34 meters
1 hour = 3600 seconds
So, 1.8 meters per second will be =
= 4.02 miles per hour.
Now, the difference between their rates is = miles per hour.
Therefore, Talia swims about 1.52 miles per hour faster than Alina.
Answers
Midpoint = ( (-2 + 4)/2 , (5 + -9)/2 )
Midpoint = (1,-2)
Therefore, the new midpoint is (1,-2)
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Answers
Answer:
The cost of the sneakers after the coupon is applied would be $46.99 - ($46.99 * 15%) = $39.94.
The total cost of the sneakers after 5% sales tax is included would be $39.94 + ($39.94 * 5%) = $41.94
Answer: $41.94
15% off means the sneakers are at 85% of it's original price.
85% = 0.85
$46.99 x 0.85
= $39.94 after 15% coupon
5% sales tax means you are adding 5% to the price.
105% = 1.05
$39.94 x 1.05
$41.94, after the coupon and sales tax.