1. Simplify 2.1 * 1.8 to 3.78
-3.5 - 3.78
2. Simplify
-7.28
Answer: 128 pages are text
Step-by-step explanation:
Answer:
15:35
Step-by-step explanation:
Answer:
96 sq. m
Step-by-step explanation:
If the width is x, the length is x + 4 and since perimeter = 2 * (length + width), we can write:
40 = 2(x + x + 4)
40 = 2(2x + 4)
20 = 2x + 4
16 = 2x
x = 8 so x + 4 = 12, therefore the area is 8 * 12 = 96 square meters.
<h3>
Answer: -7/10</h3>
Explanation:
The perpendicular slope is the negative reciprocal of the original. That means you flip the fraction to get from 10/7 to 7/10, then you flip the sign from positive to negative, going from 7/10 to -7/10.
Your math teacher or textbook may use the phrasing "flip the fraction and flip the sign" as a way to help you remember.
Note how 10/7 times -7/10 is equal to -1. This applies to any pair of perpendicular slopes as long as neither line is vertical.