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elena55 [62]
2 years ago
13

A medical researcher needs 5 people to test the effectiveness of an experimental drug. If 14 people have volunteered for the tes

t, in how many
ways can 5 people be selected?
Mathematics
1 answer:
algol [13]2 years ago
5 0

byAnswer: doing the trials/tests

Step-by-step explanation: Learn With Brainly

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What is the radius of a circle whose equation is x2 + (y – 8)2 = 25?
Nesterboy [21]
The formula for a circle is (x - h)^2 + (y - k)^2 = r^2
Where (h, k) is the center and r is the radius.
x^2 + (y - 8)^2 = 25
25 = r^2
So the radius is sqrt 25 or 5.
Radius = 5
6 0
3 years ago
Please I'm in urgent need of help. what must be added to make (1/4)x^2-(2/3)xy a perfect square?.​
Ipatiy [6.2K]

Answer:

\bigg(\frac{2}{3}  {y} \bigg)^{2}

STEP BY STEP EXPLANATION

\frac{1}{4}  {x}^{2}  -  \bigg( \frac{2}{3}  \bigg)xy \\  \\  =   \bigg(\frac{1}{2}  {x} \bigg)^{2}  - 2. \bigg(\frac{1}{2}  {x} \bigg)\bigg( \frac{2}{3} y \bigg ) +  \bigg(\frac{2}{3}  {y} \bigg)^{2} \\  \\  = \bigg(\frac{1}{2}  {x}  -  \frac{2}{3} y\bigg)^{2}  \\

To make \red{\bold{\frac{1}{4}  {x}^{2}  -  \bigg( \frac{2}{3}  \bigg)xy}} a perfect square we should add \purple{\bold{\bigg(\frac{2}{3}  {y} \bigg)^{2}}}

8 0
2 years ago
Read 2 more answers
Please please please please please please please please please please please please please answer
Mademuasel [1]
The answer is A. You can check by plugging in the numbers for x.
8 0
3 years ago
Read 2 more answers
Can you solve this?<br> Solve this with a EXPLANATION to get a Brainliest! <br> Good luck! :D
tamaranim1 [39]
I believe that the answer is D sorry if not though
3 0
3 years ago
What is the equation of (0,2) and (3,0)
ivolga24 [154]
Let's first find the slope. This is (y_2 - y_1)/(x_2 - x_1), where (x_1, y_1) and (x_2, y_2) are points.

For this problem, our slope is (0 - 2)/(3 - 0) = -2/3.

We can now use the point-slope formula to find the equation of our line:
(y - y_1) = m(x - x_1)
(y - 2) = -2/3(x - 0)
y - 2 = (-2/3)x
y = (-2/3)x + 2

The equation of our line is \boxed{y = -\frac{2}{3}x + 2}.


8 0
4 years ago
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