jackiew jackiew

16-02-2017
Mathematics

contestada

The price of an item yesterday was $130. Today, the price fell to $39. Find the percentage decrease.

Respuesta :

jdoe0001 jdoe0001

16-02-2017

well, the decrease was 130 - 39, that is 91

so... if 130 is the 100%, what is 91 of that in percentage?
well [tex]\bf \begin{array}{ccllll} amount&\%\\ \textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\\ 130&100\\ 91&x \end{array}\implies \cfrac{130}{91}=\cfrac{100}{x}[/tex]

solve for "x"

Answer Link

Otras preguntas

A common feature of all interest groups is that they ______. a. spend huge amounts of money on campaign donations b. sponsor public demonstrations c. are organi

suppose that two factors have been identified for the u.s. economy: the growth rate of industrial production, ip, and the inflation rate, ir. ip is expected to

Read the excerpt from "What Does American Democracy Mean to Me?” by Mary McLeod Bethune. We are rising out of the darkness of slavery into the light of freedom.

if a two-stock portfolio is equally invested in stocks with betas of 1.4 and 0.7, then the portfolio beta is: g

Which of the following is the correct electron configuration for N (nitrogen)? A. 1s²2s²3s²3p¹ B. 1s²1p5 C. 1s²2s²2p²3s¹ D. 1s²2s²2p3

Read the selection/paragraph from the section "Appeals From State Supreme Courts." The U.S. Supreme Court rarely agrees to retry a state supreme court case when

Chimpanzee communication involves different combinations of sounds. What are some examples of these sounds?.

As a country becomes richer. the primary sector becomes smaller and the tertiary sector becomes larger. Why is this so?

TRUE or FALSE: As time passes, the universe is becoming more disorderly.

10. Which statement is true? 1.The nitrogen cycle starts with plants. 2.The nitrogen cycle has no beginning or end. 3.The nitrogen cycle ends with animals.