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Soloha48 [4]
2 years ago
14

An algebra class has 21 students who all participate in a welcome activity introducing themselves to each other in pairs. One st

udent wants to know how many introductions were made.
Fill in the values of n and r to complete the formula for finding the number of combinations of introductions.
Mathematics
1 answer:
Nuetrik [128]2 years ago
3 0

The handshake is an illustration of combination, and the values of n and r are 21 and 2, respectively

<h3>How to determine the values of n and r?</h3>

The number of students in the class is 21.

This represents the value of n

i.e. n = 21

Each student shakes hand with another student (i.e. 2 students per handshake)

This represents the value of r

i.e. r = 2

Hence, the values of n and r are 21 and 2, respectively

Read more about combination at:

brainly.com/question/11732255

#SPJ1

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ad-work [718]

Answer:

C )   She needs to save AT LEAST  20 months

Step-by-step explanation:

Half of her income each month  is $250

m= months

250m ≥ 5000

m≥ 20

6 0
2 years ago
HELP IVE BEEN STRUGGLING FOR THE PAST 15 MIN PLEASEEEEE
joja [24]

<u>Answer:</u>

c=  -1/2

<u>Step-by-step explanation:</u>

Let's solve your equation step-by-step.

4 /3  = −6c − 5/ 3

Step 1: Simplify both sides of the equation.

4 /3  =−6c +  −5 /3

Step 2: Flip the equation.

−6c +  −5 /3  =  4/3

Step 3: Add 5/3 to both sides.

−6c +  −5 /3  +  5 /3  = 4/3  +  5 /3  −6c

=3

Step 4: Divide both sides by -6.

−6c  −6   =  3 − 6 c =  −1 /2

4 0
3 years ago
Read 2 more answers
Bacteria triples every hour. How much bacteria will there be after two days if they started with 13,000 bacteria.
timofeeve [1]
13,000 • 3 = 1 hour = 39,000
Now we take the one hours worth 39,000 • 48 (hours in two days) = 1,872,000
Hope this helps!
6 0
3 years ago
1. 1/48 simplified
Hatshy [7]

Answer:

The answer is 10

Step-by-step explanation:

\frac{1}{2} x = 5 \\ x = 10

3 0
2 years ago
Well I need help please
marissa [1.9K]

 change to improper fractions

 77 1/2 = 145/2

2  1/4  = 9/4

divide

145/2 divide 9/4

copy dot flip

145/2 * 4/9

580/18

290/9

32  2/9

it will fit into 32 bags with 2/9 left over

We have 32 full bags * 2.25 = $72.00



8 0
3 years ago
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