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insens350 [35]
2 years ago
14

Pls help i dont know this one

Mathematics
1 answer:
telo118 [61]2 years ago
6 0

Answer:

The answer is A :)

Step-by-step explanation:

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−2x (x + 5 ) for x = −3
ValentinkaMS [17]

Answer:

12

Step-by-step explanation:

(-2)(-3)(-3+5)

6(2)

12

Merry Christmas :)

4 0
3 years ago
Christine is 4 years younger than Mark. 3 years from now, she will be two-thirds as old as Mark find their present ages.Complete
icang [17]

Answer:Mark Is 9 years old; Christine is 5 years old

Step-by-step explanation:

Present age

LET  mark age be x

Christine be x-4 yrs

In 3 yrs Time

Mark will be x+3 yrs old

Christine  will be  (x -4 +3) = x-1 years old

Also, In 3 years time

Christine  = 2/3 Mark

such that

  x-1 = 2/3(x+3)

  x -1= 2x+6 / 3

    3x  -3= 2x+6

      3X--2X = 6+3

         =X=9

Mark Is 9 years old

Christine is   x -4 = 9-4=5 years old

5 0
3 years ago
400 m in 32 s - runners speed
Harman [31]

Answer:

12.5 m in 1 second.

Step-by-step explanation:

400/32=12.5

6 0
2 years ago
Read 2 more answers
A blood bank needs 15 people to help with a blood drive. 20 people have volunteered. Find how many different groups of 15 can be
Alexxx [7]

Answer:

15,504 different groups

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
24x + 30x = 3x + 24 + 4
Alinara [238K]

24x + 30x = 3x + 24 + 4


54x=3x+24+4


54x=3x+28


54x-3x=28


51x=28


X=28/51

7 0
3 years ago
Read 2 more answers
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