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guajiro [1.7K]
3 years ago
8

Which option below best describes the difference between an experiment and an observational study?

Mathematics
1 answer:
noname [10]3 years ago
5 0

An observation study is where nothing changes and you record what is seen. An experimental study you have a control group and a testable group.

The answer would be: .C. The groups in an experiment are chosen at random, but not in an observational study.

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3 years ago
Which is not a true statement? A 0.3711 > 0.3801 B 0.4290 = 0.429 C 0.6798 < 0.6801 D 0.943 > 0.1
Thepotemich [5.8K]
A since 0.3711 is not bigger but smaller than 0.3801.
7 0
3 years ago
Read 2 more answers
F(x) = 3x+7 <br><br> g(x) = 5x + 6 <br><br> find f(x) and g(x)
Assoli18 [71]

Answer:

f(x)=3x+7

-3x=7

x=7/-3

g(x)=5x+6

-5x=6

x=6/-5

4 0
3 years ago
A 51-foot wire running from the top of a tent pole to the ground makes an angle of 58° with the ground. If the length of the ten
AfilCa [17]

Answer:

<em>35.11 ft</em>

<em></em>

Step-by-step explanation:

This given situation can be thought of as triangle \triangle PQR where PQ is the length of pole.

PR is the length of rope.

and QR is the distance of bottom of pole to the point of fastening of rope to the ground.

And \angle Q \neq 90^\circ

Given that:

PQ = 44 ft

PR = 51 ft

\angle R = 58^\circ

To find:

Side QR = ?

Solution:

We can apply Sine Rule here to find the unknown side.

Sine Rule:

\dfrac{a}{sinA} = \dfrac{b}{sinB} = \dfrac{c}{sinC}

Where  

a is the side opposite to \angle A

b is the side opposite to \angle B

c is the side opposite to \angle C

\dfrac{PR}{sinQ}=\dfrac{PQ}{sinR}\\\Rightarrow sin Q =\dfrac{PR}{PQ}\times sinR\\\Rightarrow sin Q =\dfrac{51}{44}\times sin58^\circ\\\Rightarrow \angle Q =79.41^\circ

Now,

\angle P +\angle Q +\angle R =180^\circ\\\Rightarrow \angle P +58^\circ+79.41^\circ=180^\circ\\\Rightarrow \angle P = 42.59^\circ

Let us use the Sine rule again:

\dfrac{QR}{sinP}=\dfrac{PQ}{sinR}\\\Rightarrow QR =\dfrac{sinP}{sinR}\times PQ\\\Rightarrow QR =\dfrac{sin42.59}{sin58}\times 44\\\Rightarrow QR = 35.11\ ft

So, the answer is <em>35.11 ft</em>.

3 0
3 years ago
Think about your previous math courses. Identify one tope that you learned about which
saw5 [17]

The answer for this question I don’t think could be answered by anyone but yourself. To help you figure this out, just simply think about all of the math courses you’ve had previous to your current course and think about which course you did best in.

8 0
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