^^ the question is in the pic
2 answers:
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Answer:
30 cm²
Step-by-step explanation:
The area (A) of a triangle is calculated as
A = bh ( b is the base and h the height )
Here b = 6 and h = 10 , thus
A = × 6 × 10 = 3 × 10 = 30 cm²
and 7² = 7 × 7 = 49
The Quadratic Function has the domain as the set of all real numbers.
For the range, start from minimum value to maximum value.
But because the parabola is downward as a < 0. Thus, there are no minimum value but the maximum value instead.
Therefore the range is y <= -4