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Svetlanka [38]
3 years ago
10

Which situation is an example of an observational study?

Mathematics
2 answers:
user100 [1]3 years ago
6 0

Answer:

s

Step-by-step explanation:

CaHeK987 [17]3 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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Curtis runs 1 mph slower than Marsy. After 2 hours of running in opposite directions, they are 30 miles apart. How fast had Curt
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Curtis runs at 7 mph. Marsy runs at 8 mph.
In opposite directions, they separate at 15 mph.
After 2 hours, they're 30 miles apart.
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4 years ago
Complete the equation to show how many thirds are equivalent to<br> 8/12 = ?/3
anygoal [31]

Answer:

\frac{2}{3}

Explanation:

What we need to do is to convert \frac{8}{12} into a new - but still equal - fraction, one with a denominator of 3. In order to convert a fraction, you either divide or multiply both the denominator and the numerator by the same number.

We know that the answer has to be a fraction with the denominator of 3. Take a look at the denominator of \frac{8}{12} - it's 12. Ask yourself: 12 divided by what number equals 3? That number would 4.

So, divide 8 by 4 as well and you would get 2. Therefore, the numerator would be 2 and the answer is \frac{2}{3}.

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4 years ago
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skelet666 [1.2K]

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3 years ago
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Can someone's help me please ​
Fofino [41]

Answer:

8.5

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Step-by-step explanation:

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Four thrids times the sum of a number 8 is 24. what is the numver​
guajiro [1.7K]

Answer:

The number is 10

Step-by-step explanation:

Let the number be x.

four thirds times = 4/3

According to the statement:

four thrids times the sum of a number and 8 is 24

4/3 *(x+8)= 24

Move  3 to the R.H.S and Multiply 4 with the parenthesis.

4x+32=24*3

4x+32=72

Move constant to the R.H.S

4x=72-32

4x=40

Divide both the terms by 4

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x=10

Therefore the number is 10....

4 0
4 years ago
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