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
nordsb [41]
2 years ago
5

two airplane fly toward each other from points 900 miles apart, at the rate, per hour, of 300 miles and 250 miles. when will the

y meet if they start at the same instant?
Mathematics
1 answer:
Lapatulllka [165]2 years ago
8 0
They get 550 miles closer per hour. 900/550=1.636363.... They will meet after 1.64 hrs
You might be interested in
Can someone answer this ITS DUE TOMORROW
zaharov [31]

Answer:

a-x

b-/

Step-by-step explanation:

64/4x4=64

625x25/25=625

3 0
2 years ago
Translate the following and explain where these examples could be
ki77a [65]
A) x-6; you have x amount of money and pay 6 dollars for a hat.
b) 2(x2);
5 0
2 years ago
Classify the triangle by its angles and sides
postnew [5]
Answer; A: Right scalene. Square on the corner tells you it's a right triangle. It's a scalene triangle because none of the sides are equal.
7 0
1 year ago
It takes kirsten 2\3 hour to weed the garden how much of the garden will be weeded after 1\4 hour
Aleonysh [2.5K]
3/12 should be the right answer
5 0
3 years ago
Read 2 more answers
In a survey, three out of four students said that courts show too much concern for criminals. Of seventy randomly selected stude
vladimir1956 [14]

Answer:

B. Yes, because P(X ≥ 68) ≤ .05

Step-by-step explanation:

The probability of a score X occuring is said to be unusually high if the probability of a score of X or larger is lower than 5%.

For each student, there are only two possible outcomes. Either they think that the court shows too much concern for criminals, or they do not think this. So we use the binomial probability distribution to solve this problem.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

In this problem we have that:

Three out of four students said that courts show too much concern for criminals. This means that p = \frac{3}{4} = 0.75

Would 68 be considered an unusually high number of students who feel that courts are partial to criminals?

We have to find P(X \geq 68).

P(X \geq 68) = P(X = 68) + P(X = 69) + P(X = 70)

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 68) = C_{70,68}.(0.75)^{68}.(0.25)^{2} < 0.000001

P(X = 69) = C_{70,69}.(0.75)^{69}.(0.25)^{1} < 0.000001

P(X = 70) = C_{70,70}.(0.75)^{70}.(0.25)^{0} < 0.000001

So

P(X \geq 68) = P(X = 68) + P(X = 69) + P(X = 70) < 0.000003

P(X \geq 68) is lower than 0.05, so this is an unusually high number.

So the correct answer is:

B. Yes, because P(X ≥ 68) ≤ .05

5 0
3 years ago
Other questions:
  • The time t required to drive a certain distance varies inversely with the speed r. If it takes 2 hours to drive the distance at
    14·1 answer
  • Please help!
    12·1 answer
  • Which of the following inequalities best represents the graph above?​
    10·2 answers
  • What is the greatest common factor if 32 and 40? A) 5 B) 8 C) 40 D) 2
    11·2 answers
  • 4x - 5 - 2x = x - 5<br><br> No Solution<br> X=0<br> X=4<br> X=5
    10·1 answer
  • The amount of money it takes to fill up a gas tank varies directly with the number of gallons bought. It cost $21.87 to fill up
    9·1 answer
  • What is the answer to the expression (7x- 5)
    9·1 answer
  • round each weight to the nearest whole gram. them estimate the total weigh of the coins in allens hand peny is 2.500 nickel is 5
    5·1 answer
  • A line that includes the point 4, 6 has a slope of 3. what is its equation in slope intercept form
    12·1 answer
  • Choose the slope-intecept form of the equation of the line through the given points.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!