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never [62]
4 years ago
8

the sum of twice a number and 15 less than the number is the same as the difference between-7 and the number. what is the number

Mathematics
1 answer:
Nuetrik [128]4 years ago
4 0

Let's say, the number is x.

2x + 15 ≤ (-7 - x )

2x + x ≤ -7 - 15

3x ≤ -23

x ≤ -23 / 3

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Plssss help thankyou
natta225 [31]

Answer:

2nd answer choice No, 6/2 does not equal 2/24 :)

Step-by-step explanation:

6/2=3 while 24/10=2.4

Another way you could think about it:

6*2=12

2+2=4

6*3=18

4+2=6

6*4=24

6+2=8

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5 0
3 years ago
The Greenville youth football team bought new footballs for their practices. They bought 9 footballs for a total of $130.50. How
hichkok12 [17]

Answer: 14.5

130.5 divided by 9 = 14.5

6 0
3 years ago
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Bess [88]

I'm not 100% sure if I'm doing it the right way, but I think the answer is the factorial of the number of letters divided by the factorials of the number of elements of each kind of element (in this case, the same letters)


9!/1!4!1!2!1!

= 9 · 8 · 7 · 6 · 5 · 4!/4!2!

= 9 · 8 · 7 · 6 · 5/2

= 9 · 4 · 7 · 6 · 5

= 63 · 120


= 7,560 permutations

8 0
3 years ago
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A group of 20 students in four adults are going on a field trip to the museum What is the ratio of students to adults complete t
stepladder [879]

Answer:

5:1

Step-by-step explanation:

Originally the ratio is 20:4

but then it is simplified to 10:2

then 5:1

6 0
2 years ago
Find the missing probability.<br><br> P(A)=13/20,P(A∩B)=13/25,P(B|A)=?
Tju [1.3M]

By definition of conditional probability,

P(B | A) = P(A ∩ B)/P(A) = (13/25) / (13/20) = 20/25 = 4/5

4 0
3 years ago
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