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
chubhunter [2.5K]
3 years ago
5

200 elementary school students were surveyed to find their blood groups. Of those, 55 were of blood group A, 85 of blood group B

, and 21 of blood group O. What is the probability that a randomly chosen student has either blood group A or blood group B? A) 0.25 Eliminate B) 0.60 C) 0.70 D) 0.81
Mathematics
2 answers:
gizmo_the_mogwai [7]3 years ago
8 0

Answer:

P(A or B) = P(A) + P(B) =  

55

200

+  

85

200

= 0.70

Step-by-step explanation:

C is correct

MA_775_DIABLO [31]3 years ago
7 0
The answer would be c for sure
You might be interested in
The table shows the price of apples in the local market. What is the cost of 12 pounds of apples? Apples (pounds) Price (dollars
MAXImum [283]
Lbs :       4, 8, 12, 16
cost :     6, 12, ?, 24

12 lbs would cost u $ 18 because the apples cost (6/4) = 1.50 per lb
5 0
3 years ago
Read 2 more answers
Given the circle below, identify each choice that is a central angle.
Taya2010 [7]

can you upload a picture

3 0
2 years ago
Can I do 50 quizzes in 2 weeks? Each takes about 5 minutes
rodikova [14]
So.
.
Let's get started with formulas.
.
I KNOW you hate formulas!! So do I, but we have to use them. No "buts". 
.
So, how many minutes are in 2 weeks?
.
Search it up. For your convenience, it is 20,160 minutes.
.
Well, I think you have your answer, since each quiz is 5 minutes, 5 times 50 (5 x 50) is 2,500 minutes.
.
Yes, you can do 50 quizzes and MUCH MUCH more in 2 weeks.
.
Hope I helped!!
8 0
3 years ago
Read 2 more answers
Your friend enters a contest to see how many seconds they can stay standing on on a beam without falling off. The first day they
Rom4ik [11]

Answer:

Step-by-step explanation:

So this is an exponential equation because it is doubling each day.

So you will first determine the equation f (x)

6 0
2 years ago
PLEASE HELP TIMED QUIZ
Karo-lina-s [1.5K]

Answer:

Randomly scattered meaning

D) A correlation of approximately 0

Hope this helps!

4 0
2 years ago
Other questions:
  • Ronique recorded the number of games that the school softball team won each year for the past 7 years: 31, 24, 32, 22, 34, 28, 3
    5·2 answers
  • Write 66 2/3% as a fraction in its simplest form and decimal to the nearest hundreth.
    13·1 answer
  • The process of generating electricity from dams and nuclear power plants is very different
    5·2 answers
  • Find area of the isosceles triangle formed by the vertex and the x-intercepts of parabola y=x2+4x−12.
    11·1 answer
  • What times 7 eaqules 810?
    13·1 answer
  • 1/2(n-5)=1/2(23-5) I cannot find what’s half of 23-5
    14·1 answer
  • What is the base of a rectangle that has a height of 26 m and an area of 78 m^2?
    13·1 answer
  • I am a number between 60 and 100 my digit is two more than my tens digit I am a prime number what number am I
    13·2 answers
  • 20 points!~ And thanks if you help me.
    9·1 answer
  • (NEED ASAP) 15 POINTS
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!