B similar AA criteria
there are two angles that measure the same and according to the AA criteria that means the two triangles are similar.
Answer:
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Step-by-step explanation:
The surface area of the square pyramid if the length of the sides of the base are 10 cm, and the slant height is 15 cm is 416.2 cm²
<h3>Surface area</h3>
Surface area of the square pyramid
= a² + 2a√a²/4 + h²
where,
- a = sides of base = 10 cm
- h = slant height = 15 cm
Surface area of the square pyramid
= a² + 2a√a²/4 + h²
= 10² + 2(10)√10²/4 + 15²
= 100 + 20√100/4 + 225
= 100 + 20√25 + 225
= 100 + 20√250
= 100 + 20(15.81)
= 100 + 316.2
= 416.2 cm²
Learn more about surface area:
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Answer:
No real roots
Step-by-step explanation:
The given equations are:
We make y the subject in the first equation to get
We substitute into the second expression to get:
We expand to get:
Multiply through by 4 to get:
The discriminant is given by 
Since the discriminant is less than zero, the two curves never intersects.
Therefore the system has no real roots
