# Posts by Tim

Total # Posts: 1,498

**Social Studies**

So the answer is B, correct?

**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 ...

**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!

**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 ...

**Math?**

Or is it C?

**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 ...

**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...

**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!!!

**Math**

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

**College Algebra**

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

**College Algebra**

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

**College Algebra**

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

**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)

**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

**College Algebra**

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

**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?

**College Algebra**

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

**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: ...

**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. ...

**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. ...

**Math**

Thank you!

**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 ...

**Health**

You are correct.

**Health**

I agree.

**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!

**Math**

Ok, thank you so much.

**Math**

Nevermind, is the answer D?

**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?

**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?

**Sociology**

I do agree with Ms. Sue as well.

**Religion**

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

**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 ...

**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?

**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!

**Math**

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

**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...

**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.

**algebra**

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

**algebra**

201.1428571 round two decimal places

**college algebra**

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

**college algebra**

mean = (round to two decimals places)

**college algebra**

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

**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 &#...

**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? (...

**college algebra**

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

**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? (...

**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)

**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)

**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)

**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 ...

**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. ...

**Business connections**

Are there any choices?

**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 ...

**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!

**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?

**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.

**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 ...

**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 ...

**Social Studies**

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

**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 ...

**math**

52

**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?

**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.

**Math**

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

**Math**

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

**Math**

I'm still confused...

**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 ...

**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. :)

**Math**

One half the members of the junior high math team are ninth graders. One fourth of the remaining members are eighth graders. One fifth of the rest are seventh graders. There are twelve 6th graders on the team. How many members on the team?

**english**

research skills are fundamental to a. academic writing b. all types of writing c. education, literature, business, and other industries, d. libraries it could be a,b, or c, but i chose b. pleases help

**english**

Blooms taxonomy was developed as a (n) a. research methodology b. problem solving strategy c. evaluation of critical thinking skills d. concept mapping tool. I did the reseasch on this an I'm torn between b. and c. I feel more strongly with c. evaluation of critical ...

**english**

all are good but i say a

**english**

poor reading comprehension skills lead to a. failure to remember what was read b. failure in academic performance c. lack of interest and concentration d. inability to relate sentences

**homework**

poor reading comprehensive skills lead to a. failure to remember what was read b. failure in academic performance c. lack of interest and concentration d. inability to relate sentences to one another. all are right to me but i will say B

**statistic**

5. Decide whether the following experiment is a binomial experiment. Explain your answer. A researcher observes the gender of the next 100 babies born at a local hospital. The boys and girls are equally likely. The random variable represents the number of boys.

**Math**

Whitney invested $25,000, part at 19% and part at 6%. If the total interest at the end of the year is $3,320, how much did she invest at 19% ?

**Trigonometry**

Use the trigonometric subtraction formula for sine to verify this identity: sin((π / 2) – x) = cos x

**Trigonometry**

Can you show steps on deriving the identity from the sum and difference formulas for cosine: sin a sin b = (1 / 2)[cos(a – b) – cos(a + b)]

**ap chemistry**

going left

**phi 208**

kants just war theory

**Math**

Find the level of elevation of the sun when a 842 foot building casts a shadow72.6 feet long

**college precalculus**

Saving. How much money should be invested monthly at 6% per year, compounded monthly, in order to have $2000 in 8 months?

**math**

5+5=10

**Math**

Find the volume of a regular square pyramid that is 8 m high and has the length of the side of the base as 9 m

**Math**

The lens of a telescope has a diameter of 24 inches. Find the exact area of the lens.

**chemistry**

Did I round to the correct number of Sig figs? 18.0/83 x 100= 22% 15.87/149.87x 100= 11.3%

**Chemistry**

What is the maximum mass of H2O that can be produced by combining 71.7 g of each reactant? 4NH3 (g) + 5O2 (g) -----> 4NO (g) + 6H2O (g) ___________ g H2O ?

**Chemistry**

What is the maximum mass of S8 that can be produced by combining 85.0 g of each reactant? 8SO2 + 16H2S yields 3S8 +16H2O

**Chemistry: Acids/Bases**

When a 100 mM aq solution of sodium acetate was prepared in the lab it had a pH of 8.9. Calculate the amount of acetic acid (in g) to be added to 0.5 L of this sodium acetate solution in order to bring its pH to the target value of 5.00.

**chemistry**

I understand part (I) but We have only briefly gone over the HH equation in class and I understand how to use it to get the pH but I really don't understand how to use it in part (II), assuming I should be using it in this question? (I)Calculate the pH of an acetate buffer...

**Math**

Use logarithmic differentiation to find the derivative of y: y=x^(e^x)

**math**

if I bought 3 items at 24.95 and 2 items at 45 and they were all 30% off, If I had bought these 5 items without the 30$ off what would I have paid

**economics**

Samantha Roberts has a job as a pharmacist earning $30,000 per year, and she is deciding whether to take another job as the manager of another pharmacy for $40,000 per year or to purchase a pharmacy that generates a revenue of $200,000 per year. To purchase the pharmacy, ...

**economics**

Samantha Roberts has a job as a pharmacist earning $30,000 per year, and she is deciding whether to take another job as the manager of another pharmacy for $40,000 per year or to purchase a pharmacy that generates a revenue of $200,000 per year. To purchase the pharmacy, ...

**algebra**

Is the answer 10 w + 3w = 13w 11-8 = 3 13w -3?

**algebra**

10w + 11 - 3w -8

**Algebraic expression**

7 more than twice jenny'a age

**statistics**

47

**Computers**

thanks the answers are B B and a thanks

**social problems**

patriarchy