Ms haley types 90 characters per minute. how many characters could she type in three minutes. what is the proportions

We already have a given unit rate for this problem, 90 characters per minute. To find the number of characters in three minutes, we simply multiply.

90 × 3 = 270

Ms. Haley types 270 words in three minutes.

These proportions are:

1:90

3:270

answer:

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step-by-step explanation:

1. find the area of two sides (length*height)*2 sides.

2. find the area of adjacent sides (width*height)*2 sides.

3. find the area of ends (length*width)*2 ends.

4. add the three areas together to find the surface area.