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
Leona [35]
3 years ago
5

A study of telephones and the risk of brain cancer looked at a group of 469 people who have brain cancer. The investigators matc

hed each cancer patient with a person of the same sex, age and race who didn’t have brain cancer, then asked about use of cell phones. This is
a) observational study
b)A matched pair experiment
c)An uncontrolled experiment
d)A randomized comparative study
Mathematics
1 answer:
Svetlanka [38]3 years ago
8 0
This is an A. <span>observational study. They are observing the use of cell phones differs between people with or without cancer.

Happy studying ^-^</span>
You might be interested in
Solve |x+2| &gt;5-(x-1)^2 by graphing
Anna35 [415]

Answer:

x

<

−

1

or

x

>

2

Step-by-step explanation:

7 0
3 years ago
Which quadratic function is represented by the graph? 3 O y = 0.5(x + 2)2 + 4 O y = 0.5(x + 3)2 -0.5 O y = 0.5(x - 3)2 -0.5 O y
nadya68 [22]

Answer:

No solution is possible from the given information.

Step-by-step explanation:

This isn't Hogwarts.

If you don't include the graph we can't magically see it.

8 0
2 years ago
PLEASE HELP ASAP 25 PTS + BRAINLIEST TO RIGHT/BEST ANSWER
vodomira [7]

Finding the discriminate of a quadratic formula determines the number and type of answers.

The formula is b^2 -4(ac)

a = 6. b = -7 and c = -4

-7^2 -4(6*-4) = 145

The answer is a positive number so this means there are 2 real solutions.

7 0
3 years ago
Read 2 more answers
Becky is responsible for purchasing a flower centerpiece for an event. The nearby florist shop offers 20 types of flowers, 13 di
Soloha48 [4]
Multiply all the numbers together to get the total amount of possible outcomes

20 x 13 x 35 = 9100

There are 9100 possible outcomes that Becky can get 

hope this helps
7 0
2 years ago
The sequence -1, 1, -1, 1 and so on is
S_A_V [24]

Answer:

-1 is the next one ithink

6 0
2 years ago
Other questions:
  • Need help plese it's easy just im stuck
    8·1 answer
  • (5 , 1 ) , ( − 2 , b ) = √ 85 find the value of b
    10·2 answers
  • David has a hose that is 27 ft long. He wants to cut it into two pieces so that the longer piece is 3 ft more than 2 times the l
    6·1 answer
  • Resolver la inecuacion 3x -14 &lt;7x -2
    13·1 answer
  • The slope of the line passing through the points (-1,5) and (1,6) is
    5·2 answers
  • Answer asap for brainliest
    11·2 answers
  • Factorise:2x^4+x^3-14x^2-19x-6
    15·1 answer
  • Determine the intercepts of the line that passes through the following points
    11·1 answer
  • Simplify 5/8-(-7/2)
    10·2 answers
  • Four friends went to a concert and paid $12 total for parking and $x per ticket. The expression $4x + $12 represents the total c
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!