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Svetlanka [38]
2 years ago
10

Which situation is an example of an observational study?

Mathematics
2 answers:
user100 [1]2 years ago
6 0

Answer:

s

Step-by-step explanation:

CaHeK987 [17]2 years ago
4 0

Answer:

D- Recording the reaction time of participants in a study who were asked to press a button as soon as they see a certain picture on a screen.

Step-by-step explanation:

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PLEASEEEEE HELPPPPPPP
Vesnalui [34]

1) We are given points on the line of the graph (0,3) and (1,1).

Rise/run represents the slope of the line.

Rise/run = -2/1  = -2.

Therefore, slope of the line is -2.

<h3>Correct option is A) -2 .</h3>

2) Given equation y=7.5x-5.

From the graph we can see that line crosses x-axis at 0.667.

But we don't find any such option.

But we can see line crossing y-axis is -5.

It seems that we need to find the point where line cut y-axis.

<h3>Therefore, correct option is C option.</h3><h3>C) - 5</h3>

6 0
3 years ago
Consider △ABC and △DEF.
Marrrta [24]
The correct answer is the last one.

Hope this helps :)
4 0
3 years ago
Read 2 more answers
A rabbit can run at a speed of 35 mph. This is 7/9 of the fastest speed of an elk. How fast can an elk run?
Anuta_ua [19.1K]

Answer:

45 miles per hour

Step-by-step explanation:

Divide 35 by 7 and multiply by 9

3 0
3 years ago
Read 2 more answers
0.9 to the 2 power =
iren2701 [21]

Answer:

0.81

Step-by-step explanation:

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7 0
3 years ago
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a wheel is made of a circular rim and 8 spokes as shown the length of each spoke is 37cm work out the total length of the rim an
docker41 [41]

Answer:

Total length of the rim = 232.36 cm (Approx.)

Total length of the rim and spokes = 296 cm (Approx.)

Step-by-step explanation:

Given:

Number of spokes = 8

Length of spokes = 37 cm

Radius of wheel = Length of spokes = 37 cm

Find:

Total length of the rim and spokes

Computation:

Total length of the rim = 2πr

Total length of the rim = 2(3.14)(37)

Total length of the rim = 232.36 cm (Approx.)

Total length of spokes = 8 x 37

Total length of the rim and spokes = 296 cm (Approx.)

6 0
3 years ago
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