1980's la

287 results

geology

Judging from the sizes of the before-and-after craters atop Mount St. Helens, which volcani event appears to have been more explosive, the last one before 1980, or that which occured in 1980? I thought it would be the one before 1980 since that would have created the upheaval ...

Algebra

For 1980 through 1990, the average weekly earnings (in dollars)for workers in the United States can be modeled by E= 14.5t + 270, where t is the number of years since 1980. Approximate the average weekly earnings in 1980 and 1990. I am having trouble understanding what I have ...

science

Since 1960, the gap between rich and poor, as measured by GNP per capita, has a. decreased, then increased since 1980. b. increased, then substantially decreased since 1980. c. increased, then substantially increased since 1980. d. decreased, then substantially decreased since...

1980's la

Im writing a paper on the 1980 's but having trouble with coming up with 1 word to describe that decade? Can u help. ??

Math

Solve. The population of a particular country was 29 million in 1980; in 1989, it was 36 million. The exponential growth function A=29e^kt describes the population of this country t years after 1980. Use the fact that 9 years after 1980 the population increased by 7 million to...

Math

The hydrocarbon emissions at idling speed in parts per million (ppm) for automobiles of 1980 and 1990 are given for 20 randomly selected cars. 1980 models: a) Construct a dot plot

math

At Frugal Foods a loaf of bread cost about $1 in 1980. In 2013, the loaf of bread cost $2.50. 1.A ratio is a comparison of two amounts by division. What is the ratio of the cost of a loaf of bread in 2013 to the cost in 1980? 2.50/1 2. Assuming the price of clothing increased ...

Algebra

The population of Australia in x years after 1980 can be modeled by the function y=14.6*(1.014)^x. Estimate the population of Australia for each year. a) 1976 b) 1980 c) 1972 I am not sure of what to do. Help Please ?

Earth Science

Judging from the sizes of the before-and-after craters atop Mount St. Helens (Figs. 4.8 and 4.9 of the Lab book), which volcanic event appears to have been the more explosive, the last one before 1980, or that which occurred in 1980

algebra 2

For 1980 through 1995, the number of degrees D(in thousands) earned by people in the united states and the percent of degrees P earned by women can be modeled by D=-0.096t^4+3t^3-27t^2+91t+1700 P=0.043t+49 where t is the number of years since 1980. A. Find a model that ...

math

At Frugal Foods a loaf of bread cost about $1 in 1980. In 2013, the loaf of bread cost $2.50. 1.A ratio is a comparison of two amounts by division. What is the ratio of the cost of a loaf of bread in 2013 to the cost in 1980? *$2.50/1 2.Assuming the price of clothing increased...

Algebra 2

For 1980-1996 the total exports (in billions of dollars) of the U.S. can be modeled by E=-0.13t^3+5.033t^2-23.2t+233 where t I'd the number of years since 1980. In what year were the total exports about $312.76 (use finding zeros to solve)

math

the population of Concord in 1980 was 400 greater than half the population Euclid. The sum of the two populations was 29,600 less than twice the population of Euclid. What was the population of each city in 1980?

9th grade Algebra

the population of Concord in 1980 was 400 greater than half the population Euclid. The sum of the two populations was 29,600 less than twice the population of Euclid. What was the population of each city in 1980?

socio

pls help me on here. 1.) what is the total population of asia in 1980 and 2009. 2.) What is the total population of phillipines in 1980 and 2009. thanks. can't find it in web.

calculus

Let C(t) be the total value of US currency (coins and banknotes) in circulation at time. The table gives values of this function from 1980 to 2000, as of September 30, in billions of dollars. Estimate the value of C(1990) . t 1980 1985 1990 1995 2000 C(t) 129.9 187.3 271.9 409...

AE

Currently, U.S. schools use technology significantly more than they did in the past. Research the use of technology in schools from 1980 until present day. Fill in the timeline below with events to depict the changes in school technology since 1980. Can you help me find soem ...

math

Suburban Population. The following charts show the populations for two suburbs from 1980 to 1990, where x = 0 correspond to 1980, x = 2 correspond to 1982, and so on. Year x Suburb 1 y Year x Suburb 2 y 0 12,690 0 23,112 2 12,071 2 23,893 4 13,463 4 24,674 6 13,867 6 25,455 8 ...

Algebra

Use the coordinates of the two points that show male life expectancies for 1980 and 2000 to write a linear function that models life expectancy. E (x), for men born in this community x years after 1960 Coordinates are 1960-66.8 1970-67.5 1980-69.9 1990-70.5 2000-74.1 2004-75.2

math

In 1980, the population of a certain country was about 161 000. since then the population has decreased about 1% per year. a. find an equation to model the population since 1980 b. estimate the population in 1990 c. suppose the current trend continues. predict the population ...

algebra 2 problem...still having trouble!!!

someone tried to help me but i still cant get the right answer....here it goes again!! For 1980 through 1995, the number of degrees D (in thousands) earned by people in the united states and the percent of degrees P earned by women can be modeled by D=-.096t^4 +3t^3-27t^2+91t+...

probability

n 1980 (before the era of in-vitro fertilization), there were 3,612,258 births in the United States (according to the U.S. Census Bureau), of which 68,339 births were to twins and 1,337 births were to triplets or more. What was the probability of having multiples (twins or ...

Math

The population of Bumpton increased by 10% from 1980 to 1990 and decreased by 10% from 1990 to 2000 what is the net percent change in the population on Bumpton from 1980 to 2000 ?

College Algebra

An amount of $500 was invested in 1970 and the investment grew as shown in the following table. The average rate of change of the investment between 1975 and 1980 is ___ per year. Year 1970 1975 1980 1985 Capital 500 966 1856 3578

Math

From 1980 to 1990 the population of London increased by 6%. From 1990 to 2000, the population of the city decrease by 3%. What was the overall percentage change in the population of London from 1980 to 2000?

Calc

Year 1940 1950 1960 1970 1980 Rate of change (million people per year) 29 49 67 76 98 If the population in 1940 were 2158 million and if the population in 1980 were 4846 million, what would be the true total change in population?

statistics

In 1980 (before the era of in-vitro fertilization), there were 3,612,258 births in the United States (according to the U.S. Census Bureau), of which 68,339 births were to twins and 1,337 births were to triplets or more. What was the probability of having multiples (twins or ...

Algebra

In 1980 median family income was about $18,000 and in 2000 it was 40,000. (a) Find slope of line passing through points (1980, 18,000) and (2000, 40,000) (b) Interperate slope as a rate of change (c) If the trend continues, estimate the median family income in 2006.

Algebra 2(help please!!)

Alisha bought a collection of 500 old pennies. She chose 20 pennies from the collection and recorded their dates. Seven pennies had dates earlier than 1980. What percent of the pennies in Alisha’s collection have dates earlier than 1980? How would I solve this or what do I ...

algebra

In 1920 the record for a certain race was 46.5 seconds. in 1980 it was 45.3 seconds let R(t) = the record in the race and t=the number of years since 1920 R(t) = 46.5 - t*0.02 what is the predicted record in 2003? 44.84 what is the predicted record in 2006?44.78 what year will...

Math

In 1980 the average price of a home in Brainerd County was $97,000. By 1986 the average price of a home was $109,000 Write a linear model for the price of a home, P, in Brainerd County as a function of the year, t. Let t=0 correspond to 1980

Math

1). In 1968, vehicle emision standards allowed 6.3 hydrocarbons released per mile driven. By 1980, the standards allowed only 0.41 hydrocarbons per mile driven. What was the rate of change from 1968 to 1980?

Calculus

The population of a region is growing exponentially. There were 40 million people in 1980 (when t=0) and 50 million people in 1990. Find an exponential model for the population (in millions of people) at any time t, in years after 1980. P(t)= Predicted population in the year ...

ENG

WHICH IS CORRECT -HE AGAIN VISITED INDIA ON AUGUST 1980 OR HE AGAIN VISITED INDIA IN AUGUST 1980

algebra

How do I predict an item's price at a future date (what formula do I use?)? given info. is cost of a Fast food Hamburger $0.15 in 1960,$0.30 in 1970, $0.50 in 1980, $0.75 in 1990, $0.89 in 2000. question#1 find average rate of increase. then predict the price of a fast food ...

education

Currently, U.S. schools use technology significantly more than they did in the past. Research the use of technology in schools from 1980 until present day. Fill in the timeline below with events to depict the changes in school technology since 1980. You need to discuss a ...

Math

The table below gives the educational attainment of the U.S. population 25 years and older since 1960. Males- Percentage with 4 years of highschool 1960 39.5% 1970 51.9% 1980 67.3% 1990 77.7% 2000 84.2% 2004 84.8% Percentage with 4 years of college or more 1960 9.7% 1970 13.5...

math

in 1968, vehicle emmision standards allowed 6.3 hydrocarbons released per mile driven. By 1980, the standards allowed only .41 hydrocarbons released per mile driven. What was the rate of change from 1968 to 1980?

principles of economic

Let’s say a newspaper, BeritaHarian (printed in Selangor) costs RM0.50 in 1980 and RM1.20 in 2006. The average wage rate in printing industry in Selangor was RM3.23 per hour in 1980 and RM14.32 in 2006. a. By what percentage did the price of a newspaper rise? b. By what ...

calculus

I solved this problem, can someone check it to make sure I did it right. There are two parts to this intrepation and estimate of the value. Let C(t) be the total value of the US currency (coins and banknotes) in circulation at time, t. The table gives values of this function ...

AE ...

Currently, U.S. schools use technology significantly more than they did in the past. Research the use of technology in schools from 1980 until present day. Fill in the timeline below with events to depict the changes in school technology since 1980. You need to discuss a ...

Math

There were 7,404,000 unemployed American workers in 1995. In 1980, there were 7,637,000 Americans unemployed. a. What was the average change in unemployment for each of these 15 years? b. If this decline continues at the same rate, how many Americans will be unemployed in the ...

AED

Axia College Material Appendix D Technology Use Timeline Currently, U.S. schools use technology significantly more than they did in the past. Research the use of technology in schools from 1980 until present day. Fill in the timeline below with events to depict the changes in ...

Web Design

how has the internet changed since 1980?

fin

what are the reason behind m&a waves of the 1980 and 1990

math

In 1980, the computer hard disk had a maximum capacity of 10 to the 7th power bytes. In 2000 computer hard disk capacity had increased to 10 to the 11th power bytes. By what factor had hard disk capacity increased between 1980 and 2000?

Biology

Iwas woudnering if you could help me with this problem. The answer key says that the answer is D and I have no idea why. The chart, included in the link, reads off a value of about .5 for the G locus for the year 1980 Finding the percent heterozygous should be as sipmle as 2(....

Social

What did Canada do in the 1980's to try to promote economic growth??

economy

Can you please help me solve the first problem of Working with the Data in Chapter 4 (page 136 #1) of Macroeconomics Fifth Edition by Stephen D. Williamson? I need all the steps of how to solve the problem 1. The employment-population ratio, from the Current Population Survey...

english

i need help on a timeline of changes in technology in schools from 1980 to present

calculus

writing an exponential equation The function gives the value of a home in dollars in the year 1980 + t. Write an equation that can be used to determine the year in which the value of the home reached $100,000? Use ^ to denote an exponent. Do not solve the equation and do not ...

Civics PLEASE HELP

Where can I find info on the National Board Of Directors from 1974 - 1980

History

What special events occurred during the 1980’s involving our government?

computer timelines

what was the different types of technology in school in 1980 until 2000

calculus

Evaluating an exponential function The function gives the value of a home in dollars in the year 1980 + t. What was the value of the home in 1988? Round your answer to the nearest whole dollar amount and give units. You would evaluate for t=8. The units should be dollars. Your...

science

Between 1960 through 1980 which year produced the greatest percentage of fish?

US history

what role did the moral majority play in the conservative movement of the 1970s and early 1980?

Social Studies

How have the uses of Bamboo changed since 1980 until now?

History

What are the 10 MOST special events occurred during the 1980’s involving our government?

socials 11 (post war 1946-1980)

what was the extent of Canada's involvement in the Marshall Plan?

math

Find the actual and approximate number days: december 8, 1972 to june 25,1980

Probability and statistics

The hydrocarbon emissions at idling speed in parts of million (ppm) for automobiles of 1980 and 1990 model years are given for 20 randomly selected cars. 1980 models: 141 359 247 940 882 494 306 210 105 880 200 223 188 940 241 190 300 435 241 380. 1990 models: 140 160 20 20 ...

social study

10 racially motivated and historical events that made an mpact on the country from 1980-2000

social studies

Give two factors that explain the changes in family organization between 1900 and 1980.

Geometry

The sum of the measures of the angles of a polygon with n sides is given. Find n. 32) 180 33) 1080 34) 1980 35) 2880

History

The revolt in Hungary (1956), the demonstrations in Czechoslovakia(1968), and the formation of Solidarity in Poland (1980's) are similar in that they

math

calculate the average percent 1970 1980 1990 2000 17.2 17.3 17.1 16.6 do you add them all together then divide by 4

history

based on this excerpt, what conclusion can u reach about u.s. goals in south africa during the mid 1980's?

college english

How to correct this sentence Since 1980, the aids epidemic has continued to spread widely throughout the world.

science

which year would you pridect produced the greastest percentage of fish? 1970, 1975, 1993, 1980, 1960?

science

which year would you predict produced the greatest percentage of fish? 1970, 1975, 1993, 1980, 1960

Language arts and writing

The first compact microwave ovens were sold in 1960. Everybody didn't use them until the 1980's.

calculus

please help me Asap In 1970, the total enrollment in public universities and colleges in a country was 5.1 million students. By 2004, enrollment had risen to 14.3 million students. Assume enrollment can be modeled by exponential growth. (a) Estimate the total enrollments in ...

algebra

A certain country's population P(t), in millions, t years after 1980 can be approximated by P(t) = 2.495(1.019)^t. Find the doubling time.

History

4. Which of the following influenced the presidential election of 1980? high inflation low gas prices racial tensions *a war with Iraq Thank You.

challenging math problems! :]

1. a total of 120 numbers can be formed using all 5 digits 1, 2, 3, 4, and 5. If these numbers are arranged in increasing order 12 345, 12 453, up to 54, 321, which one is the 75th number in this order? *can someone tell me how to do this problem???^) 2. Jane cycles to work ...

English----Novel

I am looking for a novel that's set in the 1980--1999 in Zimbabwe. Any recommendation is appreciated.

Macroeconomics

Briefly discuss the importance of the Depository Institutions Deregulation and Monetary Control Act of 1980. Do a little research, then take a shot. Tell us what you think.

history

desribe the social, economic, and political composition of the decade of corporate greed and how it affected the political climate of the 1980's.

economics

It is based on the idea the the velocity of money is constant. Monetarist advocated such a policy in the 1970's and Volcker tried it around 1980 and it a did not work so no one advocates it any more.

History

I need information on technology in the criminal justice system in 1970-1980; such as the finger print system and other technological things that were developed

algebra

the function w(x)=-0.01x^2+0.27x+9.20 can be used to estimate the number of workers in the US, x years after 1980. How many workers were there in 1995? please show work. a. 9.2 M b. 10.4M c. 11M d. 15.5M

physicss

If there were no air resistance, with what speed would drops hit the Earth if they fell from a cloud 1980 m above the Earth’s sur- face? The acceleration of gravity is 10 m/s2

Math. Increases

The worlds pop in 1970 is estimated to be 3.7*10^9. The yearly growth rate is approximately 2%. How large would the world's pop be in 1980? Please show work. Thanks :)

Government/Social Studies

I have to locate information about racially motivated events and/or crimes that occurred between 1980 - 2000, that resulted in changes in the law or school policies. Where do I start? Please help!!

History

How does the Quiet Revolution 1960, PQ was elected 1976, referendum 1980, constitution 1982, assimilation 1840, plains of abraham 1759, Distinct society- 1990 Cobtributed to the rise of seperatism in Quebec?

Geography

Two presidential races selected from 1940–2000. One pre-1970, other post 1980. Analysis of the spread of power through the nation for each election. I don't understand this at all, can someone help me?

continuous compounding?

$50,000 that was invested in 1970 was worth $134,100 in 1980. What annual interest rate did this investment earn in that 10 year period? Assume continous compounding.

American Government

The president's fast track authority was revoked in _____ but restored in _____. 1.)1978, 1995 2.)1945, 1965 3.)1980, 1987 My answer4.)1994, 2002

uvi St Thomas VI

There were 2,553 live births in the VI in 1980 and 1,649 in 2005 What formula should be used to calculate the percent change in the number of persons living in the VI from 2000 to 2005

math

in the figure above,about how much did the sales of the product increase from 1979 to 1980? 1] 900 2] 2,500 3] 90,000 4]160,000 5] 250,000 please help me

math

What is the sum of the exterior angles in a regular 13-gon? A. 152.3 degrees B. 1980 degrees C. 360 degrees D. 3960 degrees

math

The population of a town is given by P =350t + 5000, where t is years after 1980. Teh input variable is what? and the Outpur variable is what? the ordered pairs are in the form of what. and what is the meanng of P(0) = 85000 in the context of this problem

History

What are the 10 MOST special events occurred during the 1980’s involving our government? I know I already posted this question. Also the american best history site does not work so please don't give it to me.

math

In 1980 in Montana the temperature rose from -32 degree's f to 50 degree's f in 12 hours. How much did the temperature increase?

math

In 1980 in Montana the temperature rose from -32 degree's f to 15 degree's f in 12 hours. How much did the temperature increase?

math

In 1980 in Montana the temperature rose from -32 degree's f to 15 degree's f in 12 hours. How much did the temperature increase? is it -47 or +47?

us history

((AN ERA OF LIMITS 1969-1980)) How were the relations between the United States and the Soviet Union different during this era? How were the relations the same?

history

What event led Carter to impose a boycott on the 1980 summer Olympics? a. Soviet invasion of Afghanistan b. Chinese refusal to sign the SALT II treaty c. Iranian revolution d. Israeli cutoff of peace talks please help me with this

Math :)

I need to write a linear function using the following data: Year Life Expectancy In Years 1940 62.5 1950 71.1 1960 73.1 1970 74.7 1980 77.5 1990 78.8 I know the formula is y=mx+b but im not sure how to determine that from what I have been given. Thanks for the help!!

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