I need help math work (geometry) :P
1 answer:
Answer:
x = 6
Step-by-step explanation:
For the triangles to be similar then the ratios of corresponding sides would be equal, that is
=
, substitute values
=
( cross- multiply )
3(x - 1)² = 75 ( divide both sides by 3 )
(x - 1)² = 25 ( take the square root of both sides )
x - 1 = ± = ± 5 ( add 1 to both sides )
x = 1 ± 5 , then
x = 1 + 5 = 6 or x = 1 - 5 = - 4
But x > 0 then x = 6
For the triangle to be similar then x = 6
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Hello!
To find the base length you use the Pythagorean Theorem
c is the slant height
a is half the base length
b is the height
Put in the values you know
Square the numbers
Add
Take the square root of both sides
Simplify
Hope this helps!
To find the base length you use the Pythagorean Theorem
c is the slant height
a is half the base length
b is the height
Put in the values you know
Square the numbers
Add
Take the square root of both sides
Simplify
Hope this helps!
Answer:
4 stations
Step-by-step explanation:
If we need to be at least 98% certain that an enemy plane flying over will be detected by at least one station, we must ensure that there is at most a 2% chance that no radar stations detect the plane.
The probability that a single radar station does not detect the plane is 0.35.
For n radar stations:
Rounding up to the next whole station, at least 4 stations are needed.