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sammy [17]
3 years ago
11

when a study is designed so that neither the subjects nor the experimenters know which subjects are in the treatment group and w

hich ones are in the control group, the study is called a ____ experiment.
Mathematics
2 answers:
Nata [24]3 years ago
5 0
(taken from a source)

<span>double blind
</span>
Hope this helped!

:)
Greeley [361]3 years ago
3 0

Answer:double-blind (APEX)

Step-by-step explanation:

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Which equation represents the graph. Please help I’m trying to finish a post test for math
8090 [49]

Answer:

5(x+3) is your answer

Step-by-step explanation:


3 0
3 years ago
For her exercise today, Keiko plans to both run and swim. Let r be the number of laps she runs and let s be the number of laps s
DerKrebs [107]

Answer:

5r + 3s ≥ 30

Step-by-step explanation:

We know Keiko wants to do exercise at least 30 minutes a day, and she wants ideally to mix up the activities, by combining running and swimming into her schedule.

Since each lap she runs takes 5 minutes and each lap she swims takes 3 minutes, these will be the left side of the inequality:

5r + 3s

She wants to exercise at least 30 minutes a day, so...

5r + 3s ≥ 30

she could do 3 laps of running and 5 laps of swimming for example.

6 0
3 years ago
What's 43080700 in word form
skad [1K]
Forty three million, eighty thousand seven hundred
8 0
2 years ago
Katie is twice as old as her sister Mara. The sum of their ages is 24. Find their ages.
Alenkasestr [34]
So k=katie's' age
m=mara's age

k is 2 times as old as m
k=2m

sum is 24
add means sum
k+m=24

so we have
k+m=24 and
k=2m
subsitute
2m+m=24
add
3m=24
divide both sides by 3
m=8
subsitute again
k=2m
k=2(8)
k=16

katie=16
mara=8
4 0
3 years ago
The student setup 30 games booths;the teachers also setup some. If 5/6 of the game booths were set up by the students, how many
Ket [755]
25 were set up by the students
6 0
3 years ago
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