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balandron [24]
3 years ago
9

A number lock has 9 different digits. a combination of three digits can be set to open the lock. how many combinations are possi

ble?
Mathematics
1 answer:
katrin2010 [14]3 years ago
6 0
There are 7 combinations sis
You might be interested in
Nadia bought 3 packs of baseball cards. Each pack had the same number of cards. She gave 5 cards to her sister. Now she has 19 c
garri49 [273]

Answer:

8 cards

Step-by-step explanation:

19 + 5 = 24

24/3 = 8

Hope this helps :)

7 0
3 years ago
What is the area of ABC below? If necessary, round your answer to two decimal places.
irina [24]
Our goal is to find the area
area=1/2 times base times height
we know the height is 7.9 but what is the base?


use the pythagorean theorem twice
alrighty
so
remember for legs length a and b and hytponuse c in a right triangle
a²+b²=c²

we need AD and DC

so
AD²+7.9²=9.4²
AD=√25.95

DC²+7.9²=23.2²
DC=√475.83

so
AD+DC=base=(√25.95)+(√475.83)
area=1/2bh
area=1/2((√25.95)+(√475.83))(7.9)
area≈106.28518654591426812803776879893
round to 2 decimal places
area≈106.29 square units
6 0
3 years ago
What is the greatest common factor of 11 and 4? Submit​
Feliz [49]

Answer:

1

Step-by-step explanation:

7 0
3 years ago
15 more than twice the hours Carla work last week is the same as three times the hours she worked this week decreased by 15. She
balandron [24]

Let the number of hours she works be x  

2x+15 15 more than twice the  

3x-15 15 less than 3 times the hours she worked  

2x+15=3x-15  

3x-2x= 30

x= 30  

the number of hours she worked is 30  


3 0
2 years ago
If a = 3 and b = 2, what is the value of the expression 11 + a - b ?
Vadim26 [7]
Substitute the values of a and b into the expression:
11 + 3 - 2
Add first because of order of operations (perform addition and subtraction in the order of occurrence from left to right):
14 - 2
Subtract (same justification as above just with subtraction instead):
12
Hope this helps!
4 0
3 years ago
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