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Eva8 [605]
3 years ago
8

HELP PLEASE

Mathematics
1 answer:
Lyrx [107]3 years ago
6 0
The solution to the equation is B. x = 9
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A medical researcher needs 37 people to test the effectiveness of an experimental drug. If 101 people have volunteered for the t
Rashid [163]

Answer:

The number of ways to select 37 people from 101 is, 5,397,234,129,638,871,133,346,507,775.

Step-by-step explanation:

In mathematics, the procedure to select k items from n distinct items, without replacement, is known as combinations.

The formula to compute the combinations of k items from n is given by the formula:

{n\choose k}=\frac{n!}{k!\cdot (n-k)!}

Compute the number of ways to select 37 people from 101 as follows:

{101\choose 37}=\frac{101!}{37!\cdot (101-37)!}

        =\frac{101!}{37!\times 64!}\\\\=\frac{101\times 100\times 99\times....64!}{37!\times 64!}\\\\=5397234129638871133346507775

Thus, the number of ways to select 37 people from 101 is, 5,397,234,129,638,871,133,346,507,775.

5 0
3 years ago
Find the area of a rectangle whose length is 68 cm and breadth 4 m.
OLga [1]

Area= length × Breadth of rectangle

> Area = 68 × 4 m^2

> Area = 272 m^2

4 0
3 years ago
rick earns $8.50 per hour at his mother office. He plans on working 12.5 hours this week. How much money will rick earn?
marusya05 [52]
That would be 8.50 times 12.5 which is $106.25
7 0
4 years ago
Read 2 more answers
Patty has $20 to spend on gifts for her friends. Her mother gives her $5 more. If each gift costs $5, how many gifts can she buy
zaharov [31]
If she has 20 dollars and her mom gives her 5 more that would be 25 dollars.  
<span>if each gift cost 5 dollars then you would divide 25 by 5 which would come out to 5 gifts. </span>
6 0
4 years ago
Read 2 more answers
14 14) Write an expression for the perimeter of a
Igoryamba

Check the picture below.

6 0
3 years ago
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