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vredina [299]
3 years ago
13

Help Please?? 12. Of the following, which one is an observational study? A. Asking hearing-impaired people to try a new style of

earphone to get their opinion B. Comparing survival rates between treating bone cancer with surgery versus treating it with radiation C. recording the daily output of a balloon factory for 6 months D. polling people on their favorite color I believe it would be 'C', yes?
Mathematics
2 answers:
EleoNora [17]3 years ago
6 0
I don’t really kno but it should be d
Semmy [17]3 years ago
4 0
The answer to your question is d

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Which is the better buy, 7 pounds for $8.47 or 9 pounds for $11.07?
wel
Let us take the case of 7 pounds for $8.47 first.
7 pounds of a product costs = 8.47 dollars
Then
1 pound of the same product will cost = (8.47/7) dollars
                                                             = 1.21 dollars
Now let us take the case of 9 pounds for $11.07
9 pounds of a product costs = 11.07 dollars
Then
1 pound of the same product will cost = (11.07/9) pounds
                                                             = 1.23 dollars
So from the above deductions we can see that 9 pounds for $11.07 is a better buy than 7 pounds for $8.47. I hope the procedure is clear enough for you to understand. In future you can use this method for solving similar problems.
7 0
3 years ago
Read 2 more answers
If 6 spring roll serve 3 people how many people will 1 roll serve
Pavlova-9 [17]

Answer:

1/2 person

Step-by-step explanation:

We can use a ratio to solve

6 rolls          1 roll

------------  = -------------

3 people      x people

Using cross products

6x =3

Divide each side by 6

6x/6 = 3/6

x = 1/2

1 roll will solve 1/2 person

7 0
3 years ago
Given the function below, find f (3/2). f(x) = 2x^2 - 7x​
kenny6666 [7]

Answer:

3 has to be 3

Step-by-step explanation:

n neg so 3

4 0
2 years ago
A triangle has sides with lengths of 60 centimeters, 63 centimeters, and 87 centimeters. Is it a right triangle
lozanna [386]
We can check this by seeing if Pythagorean's theorem applies. The longest side is the hypotenuse, so let's see if this is true:
60^2+63^2 = 87^2
7569 = 7569

This is, indeed correct, thus, this <em>is </em><em>a right triangle.</em>
5 0
3 years ago
Please help I need help on this
LiRa [457]
1×10+7×1+6×0.1+0×0.01+1×0.001 is the answer
4 0
3 years ago
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