Ask question

Ask question

All categories

2 years ago

5

A blood bank needs 15 people to help with a blood drive. 20 people have volunteered. Find how many different groups of 15 can be

formed from the 20 volunteers.

2 answers:

Sergeeva-Olga [200]2 years ago

5 0

Answer: if they only have 20 patients then there can only be 1 group of 15 people! hope this helps

Step-by-step explanation:

Alexxx [7]2 years ago

3 0

Answer:

15,504 different groups

Step-by-step explanation:

You might be interested in

This doesn’t make any sense

Artist 52 [7]

If you are in a school app similar to mine you drag your mouse over the line look for the 1 the one has to be first number. There will be 2 numbers it will look like (1,?) the second number is unknown so look for it and type it in

7 0

3 years ago

Read 2 more answers

X puᴉɟ oʇ ǝʌɐɥ noʎ<br><br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%20%7B%7D%5E%7B2%7D%20%7D%7B5%20%7B%7D%5E%7B2%7D%20%7D

Law Incorporation [45]

Hello there! The value of x is 20 or -20

"20 or - 20" is one answer so you are supposed to answer 20 or -20, not choose only one.

Step-by-step explanation:

$\large{ \frac{ {x}^{2} }{ {5}^{2} } = {4}^{2} }$

First, we simplify 5² and 4²

$\large{ \frac{ {x}^{2} }{25} = 16}$

Multiply the whole equation by 25 to get rid of the denominator.

$\large{ \frac{ {x}^{2} }{25} (25) = 16(25)} \\ \large{ {x}^{2} = 400}$

Square both sides and solve the equation.

$\large{ \sqrt{ {x}^{2} } = \pm{ \sqrt{400} }}$

Also don't forget to write "plus or minus" symbol when we are solving a quadratic equation by squaring both sides.

$\large{x = \pm{20}}$

4 0

3 years ago

25pts awarded and brainliest awarded, plz help asap!!!!!!

ivann1987 [24]

Answer:

B. f(-1)=6

C. The domain of f(x) is the set {-2.-1,0,1,2,3,4,5,6}

Step-by-step explanation:

To find f(5) from the table means, the y-value that corresponds to x=5.

This value is 12.

This implies that:

f(5)=12

Also the y-value that corresponds to -1 is 6.

Hence f(-1)=6

The domain of f(x) are the set of all the x-values.

The domain is : {-2.-1,0,1,2,3,4,5,6}

The range for f(x) is the set of all the corresponding y-values.

From the table, the range is: {5,6,7,8,9,10,11,12,13}

4 0

3 years ago

What is (7y+6x)(−7y-6x)

EleoNora [17]

See attache picture for answer

4 0

3 years ago

PLZ ANSWER QUICK

STatiana [176]

Answer:

i think its 24

Step-by-step explanation:

because its from P to H and that is 2× D to E so 12×2=24 therefore you're answer is 2r

4 0

3 years ago