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nevsk [136]
3 years ago
7

9. Simplify (3a4 – 2a2 + 5a – 10) – (2a4 + 4a2 + 5a – 2).

Mathematics
1 answer:
Zinaida [17]3 years ago
4 0
The answer to the question is a

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The air temperature drops from 94°F to 72°F in 15 minutes what is the change in temperature
mamaluj [8]
The temperature drops 22<span>°F in 15 minutes.

22</span>°F / 15 = 1.46<span>°F per minute

Hope I helped!</span>
7 0
3 years ago
The terminal velocity of a person falling through air is about 100Km/hr. The acceleration due to gravity is 10ms−2. Use this inf
Aleonysh [2.5K]

The question here is how long does it take for a falling person to reach the 90% of this terminal velocity. The computation is:

The terminal velocity vt fulfills v'=0. Therefore vt=g/c, and so c=g/vt = 10/(100*1000/3600) = 36,000/100,000... /s. Incorporating the differential equation shows that the time needed to reach velocity v is 

t= ln [g / (g-c*v)] / c. 

With v=.9 vt =.9 g/c,

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8 0
3 years ago
What is the z-score for a patient who takes 7 days to recover? (choose the closest possibility.)
Kisachek [45]

Based on the time it took the patient to recover and the mean and standard deviation, the z-score is 1.5.

<h3>What is the z-score?</h3>

The z-score for this patient who takes 7 days to recover can be found as:

= (Time taken to recover - Mean) / Standard deviation

Solving for the z-score gives:

= (7 - 5.2) / 1.2

= 1.8 / 1.2

= 1.5

The first part of the question is:

The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5.2 days and a standard deviation of 1.2 days.

Find out more on the z-score at brainly.com/question/25638875

#SPJ4

5 0
2 years ago
Choose the most appropriate translation. The number of cars sold (which depends on the price for the car)
krok68 [10]
. The amount of TIME spent driving (which depends on the SPEED of the car) is 5 hours. means time(speed) = 5. TIME and SPEED are your key words and 5 is the key number.
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3 years ago
The baby lions at the zoo are growing. For the first 4 months, they eat 10 ounces of food per day. Every month after that, the a
denpristay [2]

Answer:

48.3

Step-by-step explanation:

6 0
2 years ago
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