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
Mkey [24]
3 years ago
15

If a(9,18) and b(1,12) find

Mathematics
1 answer:
galina1969 [7]3 years ago
6 0
AB= \sqrt{(9-1)^2+(18-12)^2} = \sqrt{8^2+6^2}= \sqrt{64+36} = \sqrt{100}=10
You might be interested in
I need help on 14 and 15 please help<br> J
Simora [160]
14 is true because all even numbers are multiples of two.
4 0
3 years ago
Read 2 more answers
Mercury: 3.3022 x 10^23 kg Earth: 5.9722 x 10^24 kg
Luden [163]

Answer:

Step-by-step explanation:

5 0
3 years ago
A computer can be classified as either cutting dash edge or ancient. Suppose that 86​% of computers are classified as ancient. ​
Leno4ka [110]

Answer:

(a) The probability that both computers are ancient is 0.7396

(b) The probability that all seven computers are ancient is 0.3479

(c) The probability that at least one of seven randomly selected computers is cutting dash edge is 0.6520.

Because the probability is about 65% is it not unusual that at least one of seven randomly selected computers is cutting dash edge, it's more likely than not.

Step-by-step explanation:

We know that 86​% of computers are classified as ancient. This means, if one computer is chosen at random, there is an 86% chance that it will be classified as ancient.

P(ancient)=0.86

(a) To find the probability that two computers are chosen at random and both are ancient​ you must,

The probability that the first computer is ancient is P(ancient)=0.86 and the probability that the second computer is ancient is P(ancient)=0.86

These events are independent; the selection of one computer does not affect the selection of another computer.

When calculating the probability that multiple independent events will all occur, the probabilities are multiplied, this is known as the rule of product.

Let A be the event "the first computer is ancient" and B the event "the second computer is ancient".

P(A\:and \:B)=P(A)\cdot P(B)=0.86\cdot 0.86=0.86^2= 0.7396

(b) To find the probability that seven computers are chosen at random and all are ancient​ you must,

Following the same logic in part (a) we have

Let A be the event "the first computer is ancient",

B the event "the second computer is ancient",

C the event "the third computer is ancient",

D the event "the fourth computer is ancient",

E the event "the fifth computer is ancient",

F the event "the sixth computer is ancient", and

G the event "the seventh computer is ancient"

P(A\:and \:B\:and \:C\:and \:D\:and \:E\:and \:F\:and \:G)=\\P(A)\cdot P(B)\cdot P(C)\cdot P(D)\cdot P(E)\cdot P(F)\cdot P(G) =(0.86)^7=0.3479

(c) To find the probability that at least one of seven randomly selected computers is cutting dash edge​ you must

Use the concept of complement. The complement of an event is the subset of outcomes in the sample space that are not in the event.

Let C the event "the computer is cutting dash edge".

Let A the event "the seven computers are ancient".

P(C)=1-P(A)=1-0.3479=0.6520

Because the probability is about 65% is it not unusual that at least one of seven randomly selected computers is cutting dash edge, it's more likely than not.

5 0
3 years ago
Select the correct answer. If the function 5x + y = 1 has the domain (-2, 1, 6), then what is the corresponding range? OA. {-9,
Leokris [45]

Answer:

D) {11,-4,-29}

Step-by-step explanation:

rewrite the equation as y= -5x+1 and plug in -2,1 and 6 to get y

-5*-2+1=11

-5*1+1=-4

-5*6+1=-29

3 0
3 years ago
Solve the following system to find the point(s) of intersection. <br> y = x² - 2x - 3<br> y = 2x - 3
omeli [17]

x=4 y=5

if we put two pharases together

the answer is as follows pic :

x=4 y=5

5 0
2 years ago
Other questions:
  • If set A = {1, 2, 3, 4}, how many subsets does A have?
    6·2 answers
  • HELP!<br><br> Is a^2 + b^2 = (a+b)^2
    12·1 answer
  • Suppose that a process is currently operating at a 3.5-sigma quality level, and it is planned to use improvement projects to mov
    13·1 answer
  • (2/5 - 1/10) + 2^3 - 23/25<br> A) 1 12/25<br> B) 2 2/5<br> C) 3 8/25<br> D) 4 3/5
    14·2 answers
  • What is the perimeter of a square with sides that measure 2x + 3 units?
    14·1 answer
  • Calculate the distance between (5, 3) and (-1, 6). Round your answer to the nearest tenth if necessary. (One place after the dec
    9·1 answer
  • The use of mathematical methods to study the spread of contagious diseases goes back at least to some work by Daniel Bernoulli i
    11·1 answer
  • If your good at geometry come here. I need your help and if you could help me out successfully I will give you BRAINLIEST and PO
    9·1 answer
  • F=9/5C + 32 find C (9 fifths is a fraction)
    5·1 answer
  • Pick the correct answer. <br> Help me please thanks so much
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!