sarahlaboy4 sarahlaboy4

21-11-2019
Mathematics

contestada

while mining,Sara found a large metal bar that weigh 20 pounds.Sara was also able to determine that able to determine that the bar has 8 pounds of copper. What percent of the weight of the bar was copper? Round your answer to the nearest tenth if necessary.

Respuesta :

Аноним Аноним

21-11-2019

Answer:

the correct answer is 40%

make 20*5=100 , which is total and 8*5 makes 40

Answer Link

Otras preguntas

Determine the delta Hvap of dichloromethane given the vapor pressure Vs. temp delta?

In addition to emotional and social skills, what other skills will help marriage and family therapists function well?a. organizingb. good judgmentc. problem-sol

For two matrices A,B to commute, the following must hold: (AB)ij=nΣk=1aikbkj=nΣk=1bikakj=(BA)ij. This can happen if for all i,j,k: 1) aik=akj and bik=bkj 2) aik

Selecting a medium, such as face-to-face conversations, graphs, or digital messaging, is one of the steps in which of the following processes? a) Decision-makin

What is true of "subletting"? A. I can sublet to anyone anytime whether or not I have told the landlord. B. Subletting without permission normally means you hav

Is there a reference to the symbol tau introduced by Bourbaki in the first book on set theory? Is it useful or necessary? Did it go out of fashion? How is it re

A student investigated the effect of hydrogen peroxide concentration on the rate of this reaction. He used catalase from potato tissue.Other than those stated,

What was Prince Henry reason for sponsoring Portuguese exploration?

Which of the following actions can decrease cardiac output?A) Increasing the rate and strength of the heartB) Decreasing the rate and strength of the heartC) In

ITS A TRUE OR FALSE QUESTION