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Rufina [12.5K]
2 years ago
15

Researchers investigated the possible beneficial effect on heart health of drinking black tea and whether adding milk to the tea

reduces any possible benefit. Twenty-four volunteers were randomly assigned to one of three groups. Every day for a month, participants in group 1 drank two cups of hot black tea without milk, participants in group 2 drank two cups of hot black tea with milk, and participants in group 3 drank two cups of hot water but no tea. At the end of the month, the researchers measured the change in each of the participants’ heart health.
Did the researchers conduct 1 drank two cups of hot black tea participants in group 3 drank two d the change in each of the participants' heart bealth. t an experiment or an observational study?
Mathematics
1 answer:
Gemiola [76]2 years ago
6 0

Answer:

Dayum u smart smart

Step-by-step explanation:

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Conjecture about the properties that change and the
Makovka662 [10]

Answer:

A and C on Edge

Step-by-step explanation:

Just completed the assignment

7 0
3 years ago
General form of the equation of a circle with its center at (-2, 1) and passing through (-4, 1)
jonny [76]

 

hello :<span>
<span>an equation of the circle Center at the A(a,b) and ridus : r is :
(x-a)² +(y-b)² = r²
in this exercice : a = -2 and b = 1 (Center at the A(-2,1))
r = AP......P( -4 , 1)
r² = (AP)²
r² = (4+2)² +(1-1)² = 36
an equation of the circle that satisfies the stated conditions.
Center at </span></span> A(-2,1), passing through P(-4, 1) is : (x+2)² +(y-1)² = 36

6 0
3 years ago
Need help please and thank you?!
PilotLPTM [1.2K]

Answer:

3. 50.27 inches squared

4. 113.1 km squared

Step-by-step explanation:

3. A=πr^2

π*16

4. A=πr^2

π*36

Have a good day :)

7 0
2 years ago
Read 2 more answers
Can someone plz explain how to do this?​
andre [41]
Subtract y
3x - y + 5 = 0
5 0
2 years ago
If u(x) =-2x^2 and v(x)=1 over x what is the range of (uov) (x)
Radda [10]

u(x) = -2x², v(x)= 1/x

(u o v)(x) = u(v(x)) = -2(1/x)²= -2/x²

We can see that domain for x is going to bee all real numbers except 0. From the equation above we can see that graph of the function (u o v)(x) = -2/x² has horizontal asymptote y=0, because degree of numerator is less than degree of denominator ( (u o v)(x) = -2x⁰/x² ).

x² is always going to be positive, so range is going to be all negative numbers.

y<0, or y∈(0,-∞)

6 0
3 years ago
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