Answer:
16
Step-by-step explanation:
y = 7
4(7)-12
28-12 = 16
If the perimeter is known / given and is 6x, you can find the length of the unknown side by adding up the lengths of the other two sides and subtracting this sum from 6x:
6x - (x+3 + 2x + 4) = 6x - x - 3 - 2x - 4
Combining like terms, 3x - 7 represents the length of the unknown 3rd side.<span />
70 miles in 3 hours = 70/3 ≈ 23.33 mph
If 1 mile = 1609 m the 23.33 miles≈ 37543.33 meter per hour.
Divide by 60 to change to meters per minute and again by 60 to change meters per minute to meters per second - Shortcut is to divide by 60 x 60 or 3600
<u>37543.33 </u>≈ 10.428 meters per second. Answer a. is correct<u>
</u>3600
Divide 21 / 3/4 or multiply by its reciprocal 4/3.
21 * 4/3 = 84/3 = 28
Therefore there will be 28 slices.
There are 4 per row.
12 divided by 3 = 4.
