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
Differentiate x^(-3)/3-2x^2-x^(-1)
GaryK [48]

Answer:

-2x^2

Step-by-step explanation:

Simplify

x^-1 - 2x^2 - x^-1

becomes

-2x^2

4 0
4 years ago
Can someone higher please help ?
monitta

.....................................................................................

3 0
3 years ago
Read 2 more answers
Sam purchased a video game for $24.99 but paid $28.56. Sam paid how much did sam pay in sales tax.
Mkey [24]
28.56-24.99= $3.57
Sam payed $3.57 in sales tax.
5 0
3 years ago
What does it equal to and how
Korvikt [17]

Answer:

The answer would me 15m

Step-by-step explanation:

1. you multiply both of them together in order to get the area

L x W = A

5 0
3 years ago
Read 2 more answers
In 6 years, Mariya will be as old as Vikram is now. In 2 years, Vikram will be three times older than Mariya. Find their ages no
Damm [24]

Answer:

Mariya is 1 year old

Vikram is 7 years old

Step-by-step explanation:

Here, we want to know the present ages of Mariya and Vikram.

Let the present age of Mariya be M and the present age of Vikram be V

From the question, we are told that in 6 years time, Mariya will be as old as Vikram is now

Thus, mathematically;

M + 6 = V ••••••(i)

Furthermore , in 2 years time Vikram will be 3 time older than Mariya

Mathematically;

( V + 2) = 3( M + 2)

V + 2 = 3M + 6

V = 3M + 6-2

V = 3M + 4 •••••••(ii)

So let’s equate the V

3m + 4 = m + 6

3m -m = 6-4

2m = 2

m = 1

But V = m + 6

V = 1 + 6

V = 7

3 0
3 years ago
Other questions:
  • A cyclist rides 225 m each minute.About how long does it take to ride 15km? Show all fo your work
    6·1 answer
  • A truck with a heavy load drove from Boston to New York at 50 mph. After dropping of the load, it returned from New York to Bost
    14·1 answer
  • Type an equation for the line shown in the graph
    14·1 answer
  • Meosha’s music Library has 17 more than two times the number of songs then Damien music library Define a variableAnd
    7·1 answer
  • Math Help please!
    12·1 answer
  • A store boght 100 toys a a cost of $10 each. The store sold all the toys at a percent markup of 40%. Find the total selling pric
    12·1 answer
  • Plz help will mark brainliest plz!!
    13·1 answer
  • Diego buys 4.25 pounds of mushrooms. Each pound costs $2.99. Which expression gives the best estimate of the cost of the mushroo
    15·2 answers
  • Someone please help me ASAP because I am really stuck thank uuuuu!!!!!
    9·2 answers
  • Use the Change of Base Formula to evaluate log3 48. Then convert log3 48 to a logarithm in base 5. Round to the nearest thousand
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!