To solve for x, add 3 to both sides, multiply both sides by -1, then take the square both sides.
Two students simplified the expressions shown. describe each student's mistake and give the correct simplified expression.
1 answer:
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Answer:
Step-by-step explanation:
Assuming the equation is:
Then taking antilogarithms gives:
We simplify on the left to get:
This gives us:
We subtract 3125 from both sides to get:
Answer:
- 231 m²
- ₹ 4620
Step-by-step explanation:
<em>See the attached.</em>
The path goes along the perimeter of the park and parallel to the sides, something like the picture attached.
<u>The path is 1 m wide and the total length is:</u>
- 50*3 + 30*3 = 240 m
We need to consider the dark cells points in the picture with reflects the overlaps. They are counted twice and each is 1 m x 1 m.
<u>Subtracting the duplicated area 9 x 1 m² to get the total area of the path:</u>
- 240 - 9 = 231 m²
<u>The cost of cementing is:</u>
- 231*20 = 4620
