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kotykmax [81]
3 years ago
9

Can someone help me with this. 18 - + 8

Mathematics
2 answers:
eimsori [14]3 years ago
7 0
Hello!

18-+8=10

Answer: 10
Morgarella [4.7K]3 years ago
7 0

Answer:

10

Step-by-step explanation:

in the picture

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a number set consists of {4,5,6,7}。How many 2-digit combinations of numbers from the data set can be divided by 3?
kifflom [539]

Answer:

5

Step-by-step explanation:

This trick works with 3:

If the sum of the digits of a number is divisble by 3 then the number is divisble by 3.

44 is not divisble by 3 because 4+4=8 is not divisble by 3.

45 is divisble by 3 because 4+5=9 is divisble by 3.

46 is not divisble by 3 because 4+6=10 is not divisble by 3.

47 is not divisble by 3 because 4+7=11 is not divisble by 3.

54 is divisble by 3 because 5+4=9 is divisble by 3.

55 is not divisble by 3 because 5+5=10 is not divisble by 3.

56 is not divisble by 3 because 5+6=11 is not divisble by 3.

57 is divisble by 3 because 5+7=12 is divisble by 3.

64, 65,67 are not divisble by 3 because their digits' sums are 10,11, and 13 respectively. 66 is a winner because 6+6=12 is divisble by 3.

Finally 7...

74,76,77 are not divisble by 3 because their digits' sums are 11,13, and 14 respectively. 75 is divisble by 3 because 7+5=12 is divisble by 3.

The victors are

45

54

57

66

75

4 0
3 years ago
-2x+y=8 help is needed​
Gnesinka [82]

Answer:

y=2x+8

Step-by-step explanation:

you move the 2x to the other side of the equation which makes its switch signs

3 0
3 years ago
Read 2 more answers
Ryan and Sarah collect baseball cards. Ryan has 150 baseball cards and collects 10 cards per week. Sarah has 233 baseball cards
ICE Princess25 [194]

Answer:

About 17 weeks

Step-by-step explanation:

Given

Ryan:

Initial = 150

<em />Additional = 10<em> (weekly)</em>

Sarah:

Initial = 233

Additional = 5 (weekly)

Required

Determine the number of weeks they have the same cards

Represent the number of weeks with w:

For Both individuals, number of card at any given week is:

Initial + Additional * w

So,

For Ryan, the expression is:

150 + 10 * w

150 + 10w

For Sarah, the expression is:

233 + 5 * w

233 + 5 w

To determine the number of weeks, we have to equate both equations:

150 + 10w= 233 + 5 w

Collect Like Terms

10w - 5w = 233 - 150

5w = 83

Solve for w

w = 83/5

w = 16.6

16.6 implies about 17 weeks, because 16.6 approximates to 17

<em>Conclusively, Ryan and Sarah will have the same number of balls in about 17 weeks</em>

5 0
3 years ago
-8 + x = 12<br> I don't get it and i need help
Blababa [14]

Answer:

this is easy just do 12-(-8)= 12+8=20

so the answer is 20

Step-by-step explanation:

4 0
3 years ago
Select the number line model that matches the expression |1/4 - 5/4|
Liula [17]

Answer:

Option C: None of the above

Step-by-step explanation:

1/4 - 5/4 = -4/4

4 0
2 years ago
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