1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Phoenix [80]
3 years ago
12

The altitude a

Mathematics
1 answer:
Mashcka [7]3 years ago
3 0

Answer:

Step-by-step explanation:

a=3400t+600, we put in 21,000 for a. Because we have to find 't' when 'a' is 21,000.

which will give us  21,000 = 3400t+600.

Then,Subtract 600 to both sides to get 20,400 = 3400t

Divide both sides by 3,400 and you get 6 = t.

The ans is 6 minutes. The plane will take 6 min to reach the altitude 21,000 feet

You might be interested in
According to a NY Times article in 2009, the average selling price of an LCD TV was $700. What would be the cost of that same TV
alina1380 [7]
Tamam hocam nasılsınız hocam ben bir şey var ya bir insan değilim ki bir şey olmaz sen kaç gibi müsait olur musunuz diye bir
7 0
2 years ago
Which integer is between -5 and 3?
Gre4nikov [31]
Integers are positive and negative whole numbers. Integers between -5 and 3 are -4, -3, -2, -1, 0, 1, 2
5 0
3 years ago
Read 2 more answers
Which of the following statements about its area will be true? Please help asap
never [62]

Answer:

the fourth answer

Step-by-step explanation:

this is because 6 x 10 is 60, and is you multiply the height by 3 it gives you 3(6) x 10 which can also be written as 18 x 10 which is equal to 180

divide 180 by 60 which will give you 3, this shows you that the growth from the original area to the new area is 3 times, so the ratio is 3:1

6 0
3 years ago
Read 2 more answers
Since the area under the normal curve within two standard deviations of the mean is 0.95, the area under the normal curve that c
alukav5142 [94]

Answer:

X \sim N (\mu ,\sigma)

And for this case we know this condition:

P(\mu-2\sigma

By the complement rule we know that:

P(X< \mu -2\sigma \cup X>\mu +2\sigma) = 1-0.95=0.05

But since the distribution is symmetrical we know that:

P(X\mu +2\sigma) = 0.025

So then the statement for this case is FALSE.

b. False

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

For this case if we define the random variable of interest X and we know that this random variable follows a normal distribution:

X \sim N (\mu ,\sigma)

And for this case we know this condition:

P(\mu-2\sigma

By the complement rule we know that:

P(X< \mu -2\sigma \cup X>\mu +2\sigma) = 1-0.95=0.05

But since the distribution is symmetrical we know that:

P(X\mu +2\sigma) = 0.025

So then the statement for this case is FALSE.

b. False

5 0
3 years ago
Solve all please and show ALLLL steps
ratelena [41]

Answer:

Step-by-step explanation:

8b - 7 = 7b - 2

Bringing like terms on one side

8b - 7b = - 2 + 7

B = 5

-12 + 5k = 15 - 4k

Bringing like terms on one side

5k + 4k = 15 + 12

9k = 27

k = 27/9 = 3

7 0
3 years ago
Other questions:
  • Emily and a friend bought two tickets to see a soccer game. Each ticket cost $8.25. The friends paid a total of $24.40, which in
    7·1 answer
  • The annual Gross Domestic Product (GDP) of a country is the value of all of the goods and services produced in the country durin
    8·2 answers
  • What is 8/6 × 5/8?<br>​
    5·2 answers
  • Pls help????????????????
    6·1 answer
  • mark read 203 pages.Laney read 100 more pages than Mark. Gavin read 10 fewer pages than Laney.How many pages did Gavin read?
    14·1 answer
  • Which describes this angle?
    5·1 answer
  • A baseball team won 40% of its first 30 games. The team then won 65% of its next 60 games. Approximately what percent of the gam
    6·1 answer
  • Pls Help WILL MARK BRAINIEST
    15·1 answer
  • alan jogged 3^2 miles to school and then 2^2 after school each day for 5 days.Jennifer jogged a total of 45 miles .who jogged th
    10·1 answer
  • Find the value of X.
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!