Question: In some countries, normal household voltage is 220 volts. It is acceptable for the actual voltage x to differ from normal by at most 8

In some countries, normal household voltage is 220 volts. It is acceptable for the actual voltage x to differ from normal by at most 8 volts. A formula that describes this is

|x - 220| ≤ 8

(a) Show that a voltage of 214 volts is acceptable.
(b) Show that a voltage of 209 volts is not acceptable.

Step by Step Solution

★★★★★

3.57 Rating (171 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

a x220214220668 2... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Precalculus Questions!

In the United States, normal household voltage is 110 volts. It is acceptable for the actual voltage x to differ from normal by at most 5 volts. A formula that describes this is |x - 110| 5 (a) Show...

Household appliances are typically powered by electricity through wall outlets. The voltage provided varies sinusoidally between - 110 2 volts and 1102 volts, with a frequency of 60 cycles per...

Household electricity is supplied in the form of alternating current that varies from 155V to 155V with a frequency of 60 cycles per second (Hz). The voltage is thus given by the equation E(t) = 155...

Read Chapters 1,2,4,7 and Write a 800 - 1000 word Reflection Paper Grading : ?Thoughtfulness?Reactions,personal experiences,criticisms, etc. ?Application to your futureprofessional(and personal)life...

General guidelines of writing for APA style: 1. All verbs referring to your study (and the studies of others) should be in past tense . 2. Do NOT paste quotations longer than 2 words. Paraphrase, but...

this is the figure Do some energy and cost saving analysis if ice storage is to be adopted for Air conditioning purposes for a space that has a sensible cooling load of 100 kW and a latent heat load...

Needing ANSWERS ASAP! Starting at pg 34 - Labeled Graded Project 06155200: Graded Project Instructions & Worksheets 1 Lesson 1: Business, Accounting, and You PROJECT GOAL The goal of this graded...

CASE STUDY 9 - THE GRIL-KLEEN CORPORATION. PLEASE DO A CASE ANALYSIS FOR CASE STUDY 9 - THE GRIL-KLEEN CORPORATION I. Introduction / Executive Summary II. Background Information III. Case Evaluation...

28. Under the corporate form of business organization, a. ownership rights are easily transferred b. a stockholder is personally liable for the debts of the corporation c. corporations are not...

Revise the following sentences to eliminate biased language. a. The mayor opened contract talks with the union representing local policemen. b. While the salesmen are at the convention, their wives...

The City of Hutchinson appropriated $80,000 to the Parks Department for the purchase of landscape plants, small tools, and small equipment. The following transactions occurred for the department...

The following data apply to the HASF Hardware Store and its 2011 budget Forecast Sales Jan $200,000 Feb $160,000 Mar $180,000 Apr $45,000 Balance Sheet Data December 31,2010 Cash $80,000 Account...

The inverse Laplace transform of F ( s ) = 1 s ( s 2 + 4 s + 5 ) is found by convolution. If one of the functions being convolved is f ( t ) = 1 , what is the other function? g ( t ) = e - 2 t s i n...

Determine how the particular sales representative and the number of sales calls (one, three, or five) made to a doctor influence the amount (in thousands of dollars) that each doctor prescribes of a...

In Problems 3142, f (x) = sin x, g(x) = cos x, and h (x) = tan x. Use the figures below to evaluate each function. (a, 2) y x2 + y2 = 5 X (-1, b) x2 + y = 1 X

In Problems 2542, establish each identity. sin [sin+sin (30)] = cos [cos - cos(30)]

In Problems 2933, solve each equation on 0

Horton Housewares' accounts receivable decreased during the year by $13.0 million. Required: What is the amount of cash Horton received from customers during the reporting period if its sales were...

It is acceptable to record prepayment of expenses as debits to expense accounts, if the unused or unexpired portions at the end of an accounting period are transferred to prepaid expense (asset)...

1 . There are five vital statistics derived from raw population data that indicate the overall health of a country.List and define the five 'vital statistics' .Describe how each of the five are...