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algol13
3 years ago
5

In a study to support drug discovery for patients with lung cancer, patients were divided into 3 groups based on the severity of

the disease. Smoking and alcohol consumption habits were recorded for all 3 groups. Is this an example of an observational study or experimental study
Mathematics
1 answer:
katrin [286]3 years ago
4 0

Answer:

It is an example of an observational study.

Step-by-step explanation:

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Which expression is equivalent to (84+16)
LuckyWell [14K]

Answer:

(85 + 15) is equivalent

Step-by-step explanation:

Not sure what you are asking 100%

6 0
3 years ago
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Sally either walks, cycles or drives to work. She walks about 15% of the time and drives about 3/5 of the time. What percentage
Ivan

Answer:

25%

Step-by-step explanation:

We need to first convert 3/5th to percentage so we are only dealing with percentage.

3/5 doing division would give us 0.6

Multiply that by 100, we get

0.6 * 100 = 60%

Thus, now we can say:

Walking = 15%

Driving = 60%

The remaining time is cycling. How much?

15 % + 60 % + cycling = 100%

75% + cycling = 100%

Cycling = 100 - 75 = 25%

7 0
3 years ago
Nathan usually drinks 32 ounces of water per day. He read that he should drink 54 ounces of water per day. If he starts drinking
mash [69]
There is a 68.75% increase in the amount of water Nathan drinks from his usual 32 ounces. If he started drinking 54 ounces of water per day, then there is a 22 ounce increase in intake. And 22 ounces is 68.75% of 54 ounces. This percentage would be derived by using the formula (54-32)/32. 
4 0
2 years ago
2. Find the sum of the digits of each multiple of 9 below.
FrozenT [24]

Answer:

Step-by-step explanation:

Take the sum of each answer and add the two digits together.
9.2=18   1+8=9

9.3=27   2+7=9

9.4=36.  3+6=9

The sum of the digits added together will always equal 9

4 0
1 year ago
Write the missing factor.
Juliette [100K]

Hello from MrBillDoesMath!

Answer:

Choice D, d+5


Discussion:

(d+5) ( d-5) = d^2 - 25 so the answer is (d+5) or choice D



Thank you,

MrB

6 0
3 years ago
Read 2 more answers
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