Find the vertex of the quadratic and explain how u get the answer step by step

Mathematics

1 answer:

saul85 [17]3 years ago

4 0

Answer:

Step-by-step explanation:

x²-4x-7=x²-4x+4+3=(x-2)²+3

put x-2=0,x=2

y=0+3=3

vertex is (2,3)

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Which equation demonstrates the opposite of a sum property?

melomori [17]

Answer: Choice D which is -(-6 + 17) = 6 + (-17)

A sum is the result of adding two numbers. It doesn't matter if those numbers are positive or negative. In choice D, we start with -6 and 17 which add to -6+17. Then we apply a negative sign to that entire thing to take the complete opposite to get -(-6+17)

The negative sign is distributed through to each term. Whatever was negative turns positive, or vice versa. So -6 turns to +6 or just 6, and 17 becomes -17. That explains how your teacher got 6 + (-17).

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The quality assurance engineer of a receiving-sets manufacturer inspects receiving-sets in lots of 50. He selects 4 of the 50 re

Mariana [72]

Answer:

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