Tuesday

January 17, 2017
Total # Posts: 1,427

**geometry**

A scale for a scale drawing is 10 cm:1 mm. Which is larger, the actual object or the scale drawing? Show work. --I understand that the answer is 100 times larger since 10mm equals 1cm. BUT how do I show the work of how this is solved? THANK YOU!

*December 1, 2015*

**math**

A game room has a floor that is 120 feet by 75 feet. A scale drawing of the floor on grid paper uses a scale of 1 unit:5 feet. What are the dimensions of the scale drawing? THANK YOU!

*December 1, 2015*

**Statistics**

A survey of physicians in 1979 found that some doctors give a placebo to patients who complain of pain for which the physician can find no cause. If the patients' pain improves, these doctors conclude that it had no physical basis. The medical researchers who conducted the...

*November 20, 2015*

**inequality**

For the problem below, the simple way to get answer would be 10*-12=-120. But how to write it as an Inequality Expression? ---A submarine descends from sea level to the entrance of an underwater cave. The elevation of the entrance is -120 feet. The rate of change in the ...

*November 7, 2015*

**math**

A submarine descends from sea level to the entrance of an underwater cave. The elevation of the entrance is -120 feet. The rate of change in the submarine's elevation is no greater than -12 feet per second. Can the submarine reach the entrance to the cave in less than 10 ...

*November 7, 2015*

**math**

I did see this answer, but how is this written as an inequality type of expression? Thank you!

*November 7, 2015*

**math**

A submarine descends from sea level to the entrance of an underwater cave. The elevation of the entrance is -120 feet. The rate of change in the submarine's elevation is no greater than -12 feet per second. Can the submarine reach the entrance to the cave in less than 10 ...

*November 7, 2015*

**math**

Jerry started doing sit-ups every day. The first day he did 15 sit-ups. Every day after that he did 2 more sit-ups than he had done the previous day. Today Jerry did 33 sit-ups. Write an equation that could be solved to find the number of days Jerry has been doing sit-ups, not...

*November 6, 2015*

**Math**

1. A ferris wheel is drawn on a coordinate plane so that the first car is located at the point (30,0). what are the coordinates of the first car after a rotation of 270* about the origin. A) (30,0) B) (-30,0) C) (0,-30) D) (0,30) This doesn't make any sense, can someone ...

*November 4, 2015*

**math**

Could someone please help us to write and solve an equation for this: A football team has a net yardage of -26 1/3 yards on a series of plays. The team needs a net yardage of 10 yards to get a first down. How many yards do they have to get on their next play to get a first ...

*November 4, 2015*

**Language arts**

1. Which of the following sentences uses the past perfect verb tense. A) By June, I will have owned the camera shop for a decade. B) After it was sold, I had owned the camera shop for 12 year as C) I cannot recall a time when I have not owned some kind of shop. D) I owned that...

*November 3, 2015*

**Physics I**

What is the torque produced by a force of 40N j applied at the point 2 m i - 5 m j + 3 m k?

*October 25, 2015*

**math**

Edward's school is 13/2 miles away from his home. He goes by car to school and back. The car consumed 4 gallons of gas taking him to and from school over 5 days. What distance did he travel per gallon of fuel? THANK YOU

*October 21, 2015*

**math**

Suppose an amount increases by 100%, then decreases by 100%. Find the final amount. Would the situation change if the original increase was 150%? Explain your reasoning. THANK YOU!

*October 20, 2015*

**math**

Leroi and Sylvia both put $100 in a savings account. Leroi decides he will put in an additional $10 each week. Sylvia decides to put in additional 10% of the amount in the account each week. 1)Who has more money after the first additional deposit? Explain. 2)Who has more money...

*October 20, 2015*

**physics**

In a phsics experiment, a 1.3 kg dynamics cart is placed on a ramp inclined at 25 degrees to the horizontal. the cart is initially at rest but is then pulled up the ramp with a force sensor. the force sensor exerts a force on the cart parallel to the ramp. negligible friction ...

*October 18, 2015*

**science**

how sure are you? isn't transcription part of gene expression (b) ........ B would also make sense then.

*October 16, 2015*

**science**

Which of the following is the key factor driving cellular differentiation in the body? a. chemical gradients in the cellular environment b. expression of genetic coding c. rate of transcription d. cellular nutritional status B or C?

*October 16, 2015*

**science**

In evolutionary terms, RNA is thought to have preceded proteins and DNA. Which of the following provides the most convincing support for this hypothesis? a. there are more types of RNA than there are of DNA b. RNA can both store genetic information and act as an enzyme c. ...

*October 16, 2015*

**Math**

Could someone please help? I can't find the definitions in my book anywhere. Thank you! 1. Given: <2 = <4, m<2 = 110 Proof: m<3 = 70 <2 = <4, m<2 = 110 Given m<2 = m<4 Definition of congruent angles m<4 = 110 b._______ <3 and <4 are a ...

*October 13, 2015*

**Math**

1. Write the converse of the following true conditional statement. if the converse is false, write a counterexample. If a < 10, then a < 15 a) if a > 10, the a > 15; false. Counterexample: a=12 and a<15. b) if a <15, then a<10; false. Counterexample: a=12 ...

*October 13, 2015*

**Math**

James have $6 in dimes and quarters if he has 4 fewer quarters then dimes then how many of each coins does he have

*October 13, 2015*

**Math**

School is 2 miles from home along a straight road. The table shows your distance from home as you walk home at a constant rate. Time(mins): 10-20-30 Distnce(mi)1.5-1-0.5 1)Is the relationship in the table proportional? 2)Find your distance from school fro each time in the ...

*October 11, 2015*

**Algebra**

Suppose a population of bacteria in a Petri dish has a doubling time of 6 hours. How long will it take for an initial population of 11000 bacteria to reach 20000? Round your answer to two decimal places.

*October 10, 2015*

**MATH HELP PLEASE**

Albert is saving up money for a down payment on a house. He currently has $4718, but knows he can get a loan at a lower interest rate if he can put down $5323. If he invests the $4718 in an account that earns 5% annually, compounded quarterly, how long will it take Albert to ...

*October 9, 2015*

**Algebra**

Albert is saving up money for a down payment on a house. He currently has $4718, but knows he can get a loan at a lower interest rate if he can put down $5323. If he invests the $4718 in an account that earns 5% annually, compounded quarterly, how long will it take Albert to ...

*October 9, 2015*

**Algebra**

Alfred is saving up money for a down payment on a house. He currently has $4185, but knows he can get a loan at a lower interest rate if he can put down $5019. If he invests the $4185 in an account that earns 4.1% annually, compounded quarterly, how long will it take Alfred to...

*October 9, 2015*

**Science**

Hello! I had a question about variations in animals, also known as genetic variations. What is a variation? I cannot find an example or a sturdy definition anywhere. Could someone give me an example of variation in animals? Thank you!

*October 7, 2015*

**math**

Here is the information for two pay-as-you-go cell phone companies, On Call- 3.5 hours: $10 Talk Time- 1/2 hour: $1.25 1)What is the unit rate in dollars per hour for each company? 2)Which company offers the best deal? Explain your answer. 3)Another company offers a rate of $0...

*October 6, 2015*

**Social Studies**

That's me by the way, just forgot to put in my name. :) ^

*October 5, 2015*

**Social Studies**

1. Which period of history was influenced by the classical Greek and Roman works? A) Renaissance** B) Age of exploration C) Technology Era D) Dark Ages 2. Many Native Americans died after the Spanish invasion because of A) loss of homes B) loss of pride C) starvation D) ...

*October 5, 2015*

**Social Studies**

1. Spanish explorers first arrived in the Americas A) In the nineteenth century B) in the late 1400s C) In the late 1500s D) In the seventeenth century. Is the answer A?

*October 5, 2015*

**Social Studies**

So the answer is B, correct?

*October 5, 2015*

**Social Studies**

1. Who were the first Early American civilization to build stone pyramids? A. Maya B. Olmec C. Aztec D. Inca Ok, so I originally had A down, but I began researching even more and then clicked B. I do not know which answer is correct. If someone would help me that would be ...

*October 5, 2015*

**Social Studies**

Which period of history was influenced by the classical Greek and Roman works? A)Renaissance B) Age of Exploration C) Technology Era D) Dark Ages The answer is A? Am I correct? Thank you!

*October 5, 2015*

**math?**

1.How are the two statements given below related to each other? x: if you run for 10 minutes, then you will raise your heart rate. z: if you do not run for 10 minutes, then you will not raise your heart rate. A) Z is the contrapositive of X. B) Z is the coverse of X. C) Z is ...

*October 1, 2015*

**Math?**

Or is it C?

*October 1, 2015*

**Math?**

1.How are the two statements given below related to each other? x: if you run for 10 minutes, then you will raise your heart rate. z: if you do not run for 10 minutes, then you will not raise your heart rate. A) Z is the contrapositive of X. B) Z is the coverse of X. C) Z is ...

*October 1, 2015*

**math**

A deep-sea diver descended from a rock that is 45 feet below sea level to a coral reef that is 88 feet below sea level. How far did the diver descend from the rock to the coral reef? **we did it this way, is this right? -45-(-88) -45+88=43 He descended 43 feet from the rock to...

*September 30, 2015*

**math**

Alexander purchased a computer on sale. The original price was $1200. The sale price was 5/6 of the original price. How much did Alexander pay for the computer? **thank you!!!

*September 30, 2015*

**Math**

oh.. I got 23/40. Is that right?

*September 30, 2015*

**College Algebra**

simplify expression (no negative exponents) -2^-3(xy^3)^-2/x^-1y^-3 I got 1/-8x^2y^2

*September 29, 2015*

**College Algebra**

(4x-3)(4x+7) i got it...

*September 29, 2015*

**College Algebra**

factor completely: 16x^2 + 16x-21 I got not factorable...

*September 29, 2015*

**College Algebra**

1 - 1 = 1 ______________________________________ 4x-12 2x-6 x^2-3x Solve the equation (its subtracting the first two fractions and equalling the last fraction)

*September 29, 2015*

**College Algebra**

I got the answer 10 plus or minus square root of -2 equals 0....not sure if that's the final answer or not

*September 29, 2015*

**College Algebra**

Use quadratic formula to solve: 5x^2-10x+6=0

*September 29, 2015*

**College Algebra**

Consider two circles. A smaller one and a larger one. If the larger one has a radius that is 8 ft longer than the smaller one, and if the ratio of the circumference is 3:1, then what are the radii of the two circles?

*September 28, 2015*

**College Algebra**

write in standard form a+bi: (2+3i)^3

*September 28, 2015*

**Programming**

The Parasol Insurance Group sells a variety of insurance policy types. Design a flowchart for a program that accepts a client’s name and “Y’ or “N’ string answers to questions about whether the client wants each of the following policy types: ...

*September 27, 2015*

**biology**

In evolutionary terms, RNA is thought to have preceded proteins and DNA. Which of the following provides the most convincing support for this hypothesis? a. there are more types of RNA than there are of DNA b. RNA can both store genetic information and act as an enzyme c. ...

*September 24, 2015*

**biology**

In evolutionary terms, RNA is thought to have preceded proteins and DNA. Which of the following provides the most convincing support for this hypothesis? a. there are more types of RNA than there are of DNA b. RNA can both store genetic information and act as an enzyme c. ...

*September 24, 2015*

**Math**

Thank you!

*September 23, 2015*

**Math**

1. Jenny is building a rectangular garden around a tree in her yard. The southwest corner of the garden will be 2 feet south and 3 feet west of the tree. The northeast corner of the garden is 1 foot north and 4 feet east of the tree. What will be the perimeter of Jenny's ...

*September 23, 2015*

**Health**

You are correct.

*September 23, 2015*

**Health**

I agree.

*September 23, 2015*

**Math**

1. To construct a copy of an angle ABC, the material that is Not necessary is A.) Protractor B.) Compass C.) Ruler or Straightedge D.) Pencil Is the answer B or A? I'm stuck between those two. Thanks!

*September 21, 2015*

**Math**

Ok, thank you so much.

*September 21, 2015*

**Math**

Nevermind, is the answer D?

*September 21, 2015*

**Math**

1.Which of the following is true about the bisectors of a segment in a plane? A) Every segment has exactly one bisector. B) Every segment has exactly two bisectors. C) Every segment has 10 bisectors. D) Every segment has infinitely many bisectors. Is the answer A?

*September 21, 2015*

**Math**

1. When constructing a congruent line segment to cd , the ray needed for the construction must be shorter than CD. A) True B) False Is the answer false?

*September 21, 2015*

**Sociology**

I do agree with Ms. Sue as well.

*September 21, 2015*

**Religion**

what are the advantage of monarchy system that israel wanted to have "just like the other nations" ?

*September 21, 2015*

**Business Statistics**

The quality control manager at a light bulb factory needs to estimate the mean life of a large shipment of light bulbs. The manufacturer's specifications are that the standard deviations is 100 hours. A random sample of 64 light bulbs indicated a sample mean life of 350 ...

*September 20, 2015*

**Math**

1.MO bisects LMN, m LMN=6x-28, m LMO=x+34. Find m NMO. A) 46.4 B) 92.8 C) 63 D) 58 Is the answer A?

*September 18, 2015*

**Math**

1. Name the intersection of plane ACG and plane BCG. A. AC B. BG C. CG D. The planes need not intersect. Is the answer C? this is hard for me since there isn't a picture. Thank you!

*September 18, 2015*

**Math**

1. _____ Two points are collinear. A. Any B. No C. Sometimes Is the answer A?

*September 18, 2015*

**Math**

1. Two angles whose sides are opposite rays are called _____ angles. Two coplanar angles with a common side, a common vertex, and no common interior points are called ____ angles. A. Adjacent; vertical B. adjacent; complementary C. vertical; adjacent D. vertical; supplementary...

*September 18, 2015*

**science**

When a 2.00 g sample of Al2(SO4)3·xH2O is heated to remove all water, a mass of 1.03 g remains. Determine the value of x.

*September 17, 2015*

**algebra**

if i knew do you think i would be asking for help

*September 16, 2015*

**algebra**

201.1428571 round two decimal places

*September 16, 2015*

**college algebra**

i do not understand the mean and it's suppose to be rounded to two decimal places

*September 16, 2015*

**college algebra**

mean = (round to two decimals places)

*September 16, 2015*

**college algebra**

195, 176, 215, 200, 189, 232, 201 mean= median= mode= 25% percentile= 75% percentile= maximum= minimum= range=

*September 16, 2015*

**college algebra**

Country CO2 Emissions (tons of carbon dioxide) 2012 population ￼ Emissions per Capita ￼ China 8,782,000,000 1,359,750,000 ￼ ￼ ￼ United States 5,144,000,000 316,597,000 ￼ ￼ India 2,185,000,000 1,233,460,000 ￼ Russia &#...

*September 16, 2015*

**college algebra**

In Japan, there were 94,848 deaths attributed to heart disease and the population of Japan is about 128 million. If the United States were able to reduce its number of deaths to be proportional to that of Japan, about how many deaths due to heart disease would be expected? (...

*September 16, 2015*

**college algebra**

Are total emissions or per-capita emissions a better gauge when comparing the CO2 emissions of various countries? Why?

*September 16, 2015*

**college algebra**

In Japan, there were 94,848 deaths attributed to heart disease and the population of Japan is about 128 million. If the United States were able to reduce its number of deaths to be proportional to that of Japan, about how many deaths due to heart disease would be expected? (...

*September 16, 2015*

**college algebra**

According to the CDC there were 597,689 deaths in the US in 2010 attributed to heart disease. Given that the US population in 2010 was close to 308 million, what was the death rate per capita for heart disease in the US for 2010? (round to five decimal places)

*September 16, 2015*

**college algebra**

In the state of Indiana, 192,031 people claim not to speak English very well. If this is 3.2% of the population of Indiana residents aged 5 years and older, estimate the population of Indiana residents aged 5 years and older. (round to the nearest person)

*September 15, 2015*

**college algebre**

There are approximately 314 million people in the U.S. If the world population is 7.1 billion people, what percent of the world population is in the U.S.? (round to one decimal place)

*September 15, 2015*

**Science**

1. What is the difference between a scientific theory and a scientific law? A) A scientific theory describes a pattern of observations, while a scientific law is an educated guess based on observation. B) A scientific theory is based on a few experiments, while a scientific ...

*September 14, 2015*

**Science**

A scientist studying the effects of gamma rays on marigolds gathered the data shown below. Hypothesis: Marigolds exposed to higher levels of radiation will not grow as well as marigolds that are exposed to less radiation Plant A: Gamma Rays (Rad/day) is 5. Water (mL/week) 50. ...

*September 14, 2015*

**Business connections**

Are there any choices?

*September 14, 2015*

**Math**

1. What is the name of the ray that is opposite of ray BA? Description of the ray. It's a straight line with the points A B C D all in a row. A) Ray BD B) Ray BA C) Ray CA D) Ray DA This doesn't make sense. I thought that CD would be opposite of BA. But I've done ...

*September 14, 2015*

**Math**

1. Plane hkp and plane rkp are two distinct planes. name the intersection of the plane hkp and plane rkp. A) Ray KP B) Ray HK C) Ray RP D) The planes need not intersect. Is the answer A? Please correct me if I am wrong. Thank you!

*September 14, 2015*

**Algebra**

The total of dharma's, Eugene, and Ferns final exam score is 272 Dharma score is added to Eugene score the sum is 28 points less than twice ferns score if Eugene score is eight point higher than Dharma score what is each student's final an exam score?

*September 12, 2015*

**MATH (factoring)**

I don't understand how to factor this question: (x+y)^2 -64 The final answer is (x + y + 8) (x + y - 8). I just don't understand how to get to that answer.

*September 10, 2015*

**Physics**

An ideal gas starts in state A at temperature T. The gas expands to new volume V by an adiabatic process and its final temperature is T′. What is the relationship between T and T′? A) T < T′ B) T > T′ C) T = T′ D) The answer depends on the ...

*September 9, 2015*

**Social Studies**

1)How did the people of the inca empire adapt to their surrounding physical environment A) By building longhouses and canoes out of bent trees and bark. B) by cutting terraces along steep slopes so they could plant crops. C)By pulling rich soil from the bottom of the large ...

*September 9, 2015*

**Social Studies**

Yeah, I agree! So I think the answer would be A.

*September 9, 2015*

**Social Studies**

1)How did the shift to farming impact native american cultures? A) Farming impact native cultures to build more permanent shelters out of brick, clay, stone, and wood. B) Agriculture led to a new way of life for native peoples, encouraging the development of distinct customs ...

*September 9, 2015*

**Math**

I tested out the theories A and B. None of them worked. So what does is mean by the x-axis and the y-axis? What does that mean?

*August 31, 2015*

**Math**

1. a triangle has vertices at (0,0), (2,1),(1,3). About which line could the triangle be resolved, in order to form one cone? A) the line at x=2y B) the line at y=3x C) the x-axis D) the y-axis Could someone please explain how to do this? Thank you.

*August 31, 2015*

**Math**

Oh yeah! I'm so sorry I got 300 but somehow came up with 3 quarts. Sorry about that.

*August 31, 2015*

**Math**

Oh ok! So about 3. There's gonna be a little extra but if rounded it would be 3.

*August 31, 2015*

**Math**

I'm still confused...

*August 31, 2015*

**Math**

1. Nicole plans to apply 2 coats of varnish to a square floor measuring 12 feet on each side. if 1 quart of varnish covers 150 square feet, what is the minimum number of quarts of varnish nicole needs for 2 coats of varnish? A) 1 B) 2 C) 3 D) 4 So this question is really ...

*August 31, 2015*

**Math**

1. In geometry, the symbol used to identify an object often looks like the meaning, or picture, of itself. Which of the symbols in geometry listed below does not resemble itself? A) angle B) parallel C) perpendicular D) similar** Is the answer D? Thank you for any help. :)

*August 31, 2015*