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ahrayia [7]
3 years ago
11

Describe the probability of getting a numbered card from a deck of cards.

Mathematics
1 answer:
anastassius [24]3 years ago
3 0

Step-by-step explanation:

well, there are 4× 1-9 meaning 36 cards

36/52

divide both sides by 4

9/13

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One number is 7 more than another. The difference between their squares is 161. What are the numbers?
sergeinik [125]
X is 7 more than y
x>y then
difference betwen squares is 161 so


x=7+y
and
x²-y²=161

so
x=7+y
sub that for x in other equation

(7+y)²-y²=161
y²+14y+49-y²=161
14y+49=161
minus 49 both sides
14y=112
divide both sides by 14
y=8

sub back

x=7+y
x=7+8
x=15

the numbers are 15 and 8
3 0
4 years ago
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Help me please !!! Only right answer please
ella [17]
The answer is 4 like i sed last time stop making conversation nd get to work
4 0
3 years ago
PLEASE HELP AND EXPLAIN!
Neko [114]

Answer:

12 years old.

Step-by-step explanation:

1) 2x+x=18

2) Now solve 2x+x=18

Add alike terms

3x=18

Now divide both sides by 3 (3x/3 and 18/3)

x=6

So Hannah is 6 years old. Her sister must be 12.

8 0
3 years ago
What's 4.88 rounded to the nearest tenth......
Ugo [173]
The first decimal point is tenth. 4.88
when rounding, we just look at the number right after the number you want to round to. it's 8 right? since 8 is closer to 10 than 0,
we round it to 4.9
                  (4.8 + 0.10)
5 0
3 years ago
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Choose the best answer.
tekilochka [14]
I believe its D, 7.5% But check it with other sources because IM not 100% positive! 
8 0
3 years ago
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