Answer:
n=10
Step-by-step explanation:
2x10=20
20+1=21
Answer:
The numbers are -15.5 and 2.5.
Step-by-step explanation:
Let the numbers be a and b.
a + b = -13
a - b = 18
Add the two equations.
2a = 5
a = 2.5
a - b = 18
2.5 - b = 18
-b = 15.5
b = -15.5
The numbers are -15.5 and 2.5.
Answer:
27x
Step-by-step explanation:
Answer:
yes
Step-by-step explanation:
its very nice and correct
Answer:
0.64 kilometres
Step-by-step explanation:
<u>Step 1: Find the perimeter in metres</u>
Perimeter of square = 4 x (Length)
Perimeter = 4 (160)
Perimeter = 640 metres
<u>Step 2: Convert from metre to kilometre</u>
1 km = 1000 m
x km = 640 m
<em>Cross multiply</em>
1000x = 640
x = 0.64 kilometres
Therefore, the perimeter of the square base is 0.64 kilometres.
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