How many even positive integers less than 300 can be written using the number 2 4 5 and 8?

Mathematics

1 answer:

AfilCa [17]3 years ago

4 0

Answer:

Step-by-step explanation:

Let us first tackle 2-digit numbers.

They are 24, 25, 28, 42, 45, 48, 52, 54, 58, 82, 84, and 85. That makes 12 2-digit numbers.

Now for the 3-digit numbers:

245, 248, 254, 258, 284, and 285. That makes 6 3-digit numbers.

Therefore, there are 12 + 6 = 18 numbers under 300 that can be made using these numbers.

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Answer:

B. Multiply each x-value in the table by -1.

Step-by-step explanation:

A point reflected across the y-axis has the same y-value, but the x-value is replaced by its opposite. For example, (-2, -31) reflected across the y-axis becomes (2, 31).

The appropriate choice is ...

... B. Multiply each x-value in the table by -1.

_____

<em>Comment on the graph</em>

The purple points are the ones in the given table. The red points are the same with their x-coordinate multiplied by -1. You can see that they are the reflection of the purple points across the y-axis. The lines joining the points are to help you see the points and which data set they are in.