In a survey of 600 homeowners with high-speed Internet, the average monthly cost of a high-speed Internet plan was $64.20 with standard deviation $11.77, estimate the number of Internet plans whose cost is: greater than $52.43

less than $87.74

between $52.43 and $64.20

Pls me this is due today and i need i will make brainliest if you me answer correctly and i will report if you try to give me a dumb answer.

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.

Paul’s car is 18 feet long. he is making a model of his car that is 1/6 the actual size. what is the length of the model?