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Dovator [93]
3 years ago
6

The difference between an observational study and an experiment is that

Mathematics
2 answers:
arlik [135]3 years ago
5 0

Answer:

c

Step-by-step explanation:

on e2021

olya-2409 [2.1K]3 years ago
4 0

Step-by-step explanation:

An observational study is when going observe to understand such object but an Experimental study includes the practice of experiments to understand and know more about such subjects in other words it includes practicals

Hope this helps ✌❤✌❤

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PLEASE:
Tju [1.3M]

Answer:

63.59 in²

Step-by-step explanation:

The formula to find the area of a square: a², where a is the side.

The formula to find the area of a circle: πr², where r is the radius (diameter ÷ 2), and the pi is alterable (3.14 or 3.142 or 22/7).

1) Find the diameter of the circle. The side of a square is the diameter.

a²

a = √81

a = 9

2) Plug the values into the formula of the area of a circle. 9 ÷ 2 = 4.5 (radius).

= 3.14 x 4.5²

= 3.14 x 20.25

= 63.585

3) Round off the result to the nearest hundredth.

= 63.59

3 0
2 years ago
Select ONE of these problems to solve. STAR the problem and then write the expression first. After you write the expression, sol
Gwar [14]
An expression that represents the total calories for ‘n’ Big Macs is:
550n
Use the expression to solve the total calories in 17 Big Macs:
550(17) = 9350

THEREFORE, there are 9350 calories in 17 Big Macs.
6 0
2 years ago
Read 2 more answers
+3=17
aev [14]

Answer:

1

Step-by-step explanation:

5 0
2 years ago
If the ratio of boys to girls in the sixth-grade chorus is 2 to 3, which choice shows possible numbers of the boys and girls in
loris [4]

Answer:

4 to 6

Step-by-step explanation:

8 0
2 years ago
Help me pleasee (and no I’m not gonna follow u if u ask just help)
erica [24]

Answer:

option B is correct -7 is the answer

Step-by-step explanation:

=4⁴-3³.(12-3)-20

=256-27×(9)-20

=256-243-20

=256-263

=-7

hope it will help ^_^

4 0
2 years ago
Read 2 more answers
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