2 years ago

State the domain and range of the function: y = -(x+8)^2 +9

Mathematics

1 answer:

Tanya [424]2 years ago

7 0

Domain: All real numbers (-infinity, infinity)

Range: [9, -infinity)

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The points (-4,r) and (2,-3) lie on a line with a slope-1. Find the missing coordinator r.?

MAVERICK [17]

Answer:

3 (-4,3)

Step-by-step explanation:

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3 years ago

Triangle ABC has sides with lengths of 11, 18, and 8 units. Determine whether this triangle is a right triangle.

Arturiano [62]

Answer:

Not a right triangle.

Step-by-step explanation:

If this triangle is a right triangle, then the Pythagorean theorem would work on it. According to the Pythagorean theorem, $a^2+b^2=c^2$ , so c would always be greater than a or b. In this scenario, the greatest number here is 18, so c = 18. Since a or b don't matter if given both legs, we have the following equation that may or may not be equal: $8^2+11^2=18^2$ . We know 8 squared is 64, and 11 squared is 121, and 18 squared is 324. This means that $64+121=324$ according to the Pythagorean theorem, and since 64 + 121 = 185, and 185 does not equal 324, the Pythagorean theorem does not work and the triangle is not a right triangle.