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Airida [17]
3 years ago
5

PLEASE HELP 10 POINTS

Mathematics
1 answer:
abruzzese [7]3 years ago
5 0
A) 70 pools in total
B) 5:2
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If the police have 9 suspects how many different ways can they select 5 for a lineup
kow [346]
Assuming the order does not matter, you want the number of combinations of 9 things taken 5 at a time.  The combinations can be shown as C(9,5), 9C5.

C(9, 5) =
9/5(9-5) = 
9*8*7*6*5 / 5*4 

The 5 terms cancel. 

9*8*7*6 / 4*3*2 = 
9*7*2 = 
126

The above change is because 4*2 cancels the 8 in the numerator and 6/3 = 2
Therefore, the solution is 126. 
4 0
3 years ago
Show that x = -2 is a solution of 3x² + 13x + 14 = 0​
Oliga [24]

Answer:

x= -2 is correct answer

Step-by-step explanation:

3(-2×-2)+13(-2)+14=0

3(4)+13(-2)+14=0

12+(-26)+14=0

12-26+14=0

12+14-26=0

26-26=0

0=0

3 0
3 years ago
Pleaseee helppp answer correctly !!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!!!!!
Aloiza [94]
Srry im late it’s 8 mark Brainly ist
3 0
3 years ago
Find the perimeter of the square. Be sure to write the correct unit in your answer.
docker41 [41]

Perimeter is the distance around the outside.

A square has 4 equal sides:

Perimeter = 21 x 4 = 84 yards

3 0
3 years ago
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What is the solution to m/17 Less than or equal to 14?
vredina [299]

Answer:

B

Step-by-step explanation:

CAN I GET BRAINLIEST PLSS

6 0
3 years ago
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