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WINSTONCH [101]
3 years ago
11

5. Mark's brother is five years older than Mark.

Mathematics
1 answer:
AleksAgata [21]3 years ago
8 0

Answer:

9

Step-by-step explanation:

Let's say Mark is M and his brother is B.

M+5=B

M+B=23

Now we can solve using subsitution.

M+M+5=23

(Subtract 5 from both sides)

2M=18

M=9

Hope this helped!

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Murrr4er [49]

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The number that belongs in the green box is 80

3 0
3 years ago
830000 in scientific notation
DedPeter [7]

Answer:

8.3 * 10 ^5

Step-by-step explanation:

830000

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NikAS [45]

Answer:

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Step-by-step explanation:

the shadow of the tall flag is three times the small flag, so the height of the flag should also be three times the height.  which is 21

6 0
3 years ago
The solution of a system of equations with no solution describes what kind of lines?
nadya68 [22]

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parallel

Step-by-step explanation:

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3 0
3 years ago
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Step-by-step explanation:

Convert cm to meters by dividing the length by 100.

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6 0
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Read 2 more answers
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