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
sasho [114]
2 years ago
13

The distance between Detroit, Ml to Paris, France is approximately 3930 mi. Flying from Detroit to Paris take 8 hr with the jet

stream. The return flight takes 8.3 hr since the plane is flying against the jet stream. a. What the plane Soren still in air, rounded to the nearest whole number, is blank mph b. What the speed of the jet stream, rounded to the nearest whole number, is blank mph
Mathematics
1 answer:
slamgirl [31]2 years ago
8 0

Answer:

a)   s=482moh

b)  s'=9mph

Step-by-step explanation:

From the question we are told that:

Distance d=3930mi

Time of flight T=8hr

Flight back T_b=8.3hr

Generally the equation for Time for flight with jet steam is mathematically given by

T=\frac{d}{s+s_1}

8=\frac{3930}{s+s'}

s+s'=491.3 ....equ1

Generally the equation for Time for flight against jet steam is mathematically given by

T=\frac{d}{s-s_1}

8.3=\frac{3930}{s-s_1}

s+s'=473.5......equ 2

Solving equ 1 and equ 2 simultaneously

s+s'=491.3

s+s'=473.5

Therefore

s=482moh

s'=9mph

You might be interested in
An unbiased coin is tossed 20 times find the probability that the coin lands heads exactly 11 times
alexgriva [62]
Both the heads and tails will have a probability of 0.5 with a fair coin. ... TO find probability that foe the 7th toss head appears exactly 4 times.
7 0
3 years ago
The time to complete a standardized exam is approximately normal with a mean of 70 minutes and a standard deviation of 10 minus.
AnnyKZ [126]

Answer:

Step-by-step explanation:

Given that the  time to complete a standardized exam is approximately normal with a mean of 70 minutes and a standard deviation of 10 minutes.

P(completing exam before 1 hour)

= P(less than an hour) = P(X<60)

=P(Z<\frac{60-70}{10} =-1)

=0.5-0.34=0.16

i.e. 16% of students completed the standardized exam.

7 0
3 years ago
Find the exact length of the third side
Daniel [21]

Answer:

√23

Step-by-step explanation:

When you are given two side lengths of a right triangle, you use the Pythagorean theorem to find the third side: a² + b² = c², where c is the hypotenuse (the longest side).

All you have to do is plug the given information in:

Remember, 13 is the hypotenuse for this triangle.

12² + b² = 13²

Simplify:

144 + b² = 169

Subtract 144 from both sides:

b² = 169-144

b² = 23

Square root both sides:

b = √23

And that's your answer!

7 0
3 years ago
Sam watched television the past five nights for 42 minutes, 23 minutes, 56 minutes, 19 minutes, and 67 minutes. What was the med
guajiro [1.7K]

Answer:

42 minutes is the median amount of time

Step-by-step explanation:

The Median is the middle value of data set.

If there is "odd" number of numbers, and there are n numbers, the median is:

(n/2) + 1 th  number

If there is "even" number of numbers, and there are n numbers, the median is:

Average of n/2th and (n/2) + 1 th number

Here, we have 5 numbers, so the median would be:

(5/2) + 1 th number

That is

3rd number

But, we need to arrange the numbers from least to greatest. Lets write it:

19, 23, 42, 56, 67

The third number is 42, this is the median

3 0
2 years ago
HELP MIDDLE SCHOOL QUESTION
leva [86]

answer:

26.563 miles.

step-by-step explanation:

5.123 + 6.34 + 7.1 + 8 = 26.563

<em>-- please mark the brainliest and click the thanks button if correct :)</em>

5 0
2 years ago
Other questions:
  • A builder set up a wooden frame in which to pour concrete for a foundation to a house. The length of the wooden frame is 24 feet
    5·2 answers
  • A bird flies 2/3 of a mile per minute. How many miles per hour is it flying?
    15·1 answer
  • In a recent year, the ACT scores for the math portion of the test were normally distributed, with a mean of 21.1 and a standard
    8·1 answer
  • A truck sold 278 hotdogs last month. this month they sold 315. what is percentage change
    11·1 answer
  • 20) Solve the problem. Suppose that 12 unique names are put into a hat and drawn at random without
    15·1 answer
  • My girl friends face <br> whats 7x7
    15·2 answers
  • 16. What is the value of 2 1/8x4 3/4
    14·1 answer
  • If ∆ABC congruent ∆DEF, which of the following can you NOT conclude as being true?
    12·2 answers
  • if one jar of jalapeños cost $2, how much will 7 jars cost? can somone help me do this step by step?!:)))
    14·2 answers
  • -10+2= (operation of integers)<br><br>​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!