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tankabanditka [31]
3 years ago
8

Rocket is launched from a tower. The height of the rocket, y in feet, is related to the

Mathematics
1 answer:
slava [35]3 years ago
3 0

Answer:

7.03 seconds

Step-by-step explanation:

First, you need to differentiate the equation (The derivative of y represents the rocket's velocity):

y' = 32x + 225

Then, set y' to 0 and solve for x

0 = 32x + 225

x = 7.03s

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Hi please help me as soon as possible:
sammy [17]

Answer:

Percentage = 14.2%

Step-by-step explanation:

<u>Given the following data;</u>

Cost of plane ticket = £588

Airport tax = $130

£1 = $1.34

To find the percentage of the total cost spent on airport tax;

First of all, we would convert the ticket cost in pounds (£) to dollars ($).

Cost of plane ticket = £588 to $ = 588 * 1.34 = $787. 92

Total cost = Cost of plane ticket + Airport tax

Total cost = 787. 92 + 130

Total cost = $917.92

Percentage \; cost = \frac {130}{917.92} * 100

Percentage  = 0.1416 * 100

<em>Percentage cost = 14.16 to 1 d.p = 14.2%</em>

<em>Therefore, the percentage of the total cost spent on airport tax by Rimo is 14.2 percent. </em>

6 0
3 years ago
Mrs. Baker conducted a survey in her classroom to determine what the students preferred to do during the summer break. Her surve
navik [9.2K]

Answer:

B. 840

Step-by-step explanation:

21 is 70% of 30 and 70% of 1,200 is 840.

4 0
3 years ago
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Is this a function or not?
Hoochie [10]

Answer:

ummm it think so

Step-by-step explanation:

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3 years ago
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A mobile phone carrier charges an extra fee if a customer uses more than 500 minutes each month. Tom has already used 230 minute
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Let x = the minutes that Tom has remaining before exceeding 500 minutes.

Because he has already used 230 minutes, the total minutes he has is
x + 230
We want this total to be less than or equal to 500 minutes.
Therefore
x + 230 ≤ 500

Answer:  x + 230 ≤ 500

3 0
3 years ago
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A car travels 41 km in 31 minutes.
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Answer: 1.30 every km

Step-by-step explanation:

to find the speed per km, you do 41 divided by 31.

41/31= 1.30 per km (rounded)

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