Questions Asked on
September 5, 2017

chemistry
iridium has two isotopes. with mass numbers 191 and 193, and its average relative atomic mass is 192.23.calculate the relative abundances of the two isotopes
asked by daanyaal 
Algebra 1
Jaden has a prepaid phone plan (Plan A) that charges 15 cents for each text sent and 10 cents per minute for calls. 1. If Jaden uses only text, write an equation for the cost C of sending t texts. a. How much will it cost Jaden to send 15 texts? Justify
asked by SAM 
AP Physics: shot projectile??
The cannon on a pirate ships shoots cannon balls with a speed of 350 m/s (the muzzle velocity). The cannon can be adjusted to shoot at any elevation above the horizontal. The barrel is 2m long and the mass is 5 kg. Ignoring air resistance and assuming the
asked by Tyger2020 
AP Physics Momentum...stuck
A spring loaded 100g dart gun is affixed at rest on a 150g frictionless cart. It fires a 25g dart with a velocity of 30 m/s. What is the final momentum of the system? I'm confused as to whether or not I should use conservation of momentum or center of
asked by Tyger2020 
Language Arts
The seashells were iridescent in the sunlight. a. cloudy b. drying out c. breaking into pieces d. shimmering with colors I choose "d" Am I right?
asked by Joanne 
Physics
A dart leaves a toy dart gun with initial velocity of 7.76 m/s, regardless of the angle it is fired. What is the maximum horizontal distance that the dart can travel? Assume that the dart gun is fired at ground level. Answers: A) 6.14 m B) 3.88 m C) More
asked by Agent P 
American Government
9. Which is an example of what Thomas Jefferson meant by the phrase “all men are created equal”? (1 point) A man is put on trial by a jury of his peers. A test is administered to determine if a woman has enough intelligence to immigrate. Wealth is
asked by Mckenzie 
physics projectile  please help....
You are in an egg drop contest which you win by breaking your egg the hardest. You drop your egg off of a 3 story building (above the ground). You can throw it up with speed 11m/s, or straight down with speed 11 m/s. Ignoring air resistance, which case
asked by anonymous 
chemistry
Examine the scenario. Chemical Reaction A and Chemical Reaction B involve the same two reactants. Chemical Reaction A is performed in a hot container, while Chemical Reaction B is performed in a cold container. Which of the answer choices correctly
asked by PLEASE help 
algebra
120 inch length of ribbon is to be cut into three pieces. The longest piece is to be 40 inches longer than the shortest piece, and the third piece is to be half the length of the longest piece. Find the length of each piece of ribbon.
asked by Maria 
Math 1
1. Justify the solution to (x5)=56+6(x5) by matching a property to each step. Step 1: 4(X5)=56 Step 2: X5=14 Step 3: X=9 A addition property of equality B subtraction property of equality C multiplication property of equality D division property of
asked by Im gonna start crying 
Math
What is another name for the line y = 0?
asked by Mellis 
social studies
im a 8th grader at conexus academy and i need help with the unit 1 lesson 2. PLEASE HELLLLLPPPPPPPP
asked by raelynn 
Language Arts
Which statement from the passage most clearly indicates developing conflict? A. Each had fought many bouts representing their community and had won two goldplated medals. B. Between them they had a collection of Fight magazines second to none. C. . . .
asked by Dejavu 
Math
Steve is 3 years older than Tim and twice as old as Hannah. Tim is 2 years older than Hannah. How old are Steve,Tim and Hannah?
asked by Natalie 
Mathematics
Mrs. Lim has 56 cups and 64 glasses. If she will put them in trays of cups and trays of glasses with the same number, what is the biggest number of cups or glasses that a tray will contain?
asked by Lim 
Math
Favorite Summer Activity for 50 Children Reading Sports Swimming TOTAL Boys 2 20 8 30 Girls 4 7 9 20 TOTAL 6 27 17 50 P(Boy if favorite activity is swimming) 0.26 P(Girl if favorite activity is sports) 0.45 P(Girl if favorite activity is reading) 0.20
asked by Wes 
chemistry
Which of the answer choices correctly defines reaction rate? the amount of reactants used in a specific type of reaction the amount of products produced in a specific type of reaction the speed at which reactants change to products over a given time the
asked by PLEASE help 
electric markets
A) Assume that during a particular hour the following 30 bids (demand = load) were observed in the NordPool (first entry is Load in 1000 MWh (= Q), and second entry is €/MWh (= P)).
asked by hello 
T.L.E
what are the different kinds of simple joints?
asked by ellaine jan orboc 
T.L.E
How are wood joints strengthened?
asked by ellaine jan orboc 
Science
Prove that the maximum horizontal range is four times the maximum height attend by a projectile when fire at an inclination so as to have maximum horizontal range
asked by Morzina wahab 
math
Please help me, these fractions are tripping me up. 11(x/4)4(x/3)+12=2(x/3)9(x/4)
asked by Please help me someone 
Math
If your goin 15 mph how long would it take to travel 394 miles
asked by Angeline 
Precalculus
I really need help on this as I have tried multiple times and my answers are none of these. Please help 1. Find (f*g)(x) where f(x)=1/(x^2+3) and g(x)=sqrt(x2). a. (f*g)(x)=1/x2 b. (f*g)(x)=1/sqrt(x2)+3 c. (f*g)(x)=1/x+1 d. (f*g)(x)=sqrt(2x^25/x^2+3)
asked by Girly Girl 
Algebra
I dont understand the did you hear about the rookie football player
asked by Anonymous 
Social Studies
Where are three reasons why Pope urban II would organize a war against the Muslim Turks?
asked by Anonymous 
Social Studies
Inflation primarily differs from deflation in that A. Inflation tracks changing prices but deflation does not. B. Inflation relates to rising rather than falling prices. ** C. Inflation happens only when the money supply is too small. D. Inflation occurs
asked by Dejavu 
social studies
The port cities of East Africa traded with ? 1)China,India, and Soutwest Asia 2)Songhai 3)Europe and the Americas 4)Portugal I think number 1. I have read the text several times but still not sure. Thanks for your help.
asked by Jamie 
English
1. While I was walking on the sidewalk, I was playing a game on my smartphone. 2. When I was walking on the sidewalk, I was playing a game on my smartphone. (Is #2 grammatical?) 3. While I walked on the sidewalk, I played a game on my smartphone. 4. When I
asked by rfvv 
Math
1. Is ( 0, 3) a solution to the equation y = x + 3? Yes No 2. Is ( 1, 4) a solution to the equation y = 2x? Yes No 3. Look at the following points: ( 4, 0) ( 3, 1) ( 6, 3) ( 2, 4) Which are solutions to y = x  4 (2 correct answers) A. ( 6, 3) B. ( 4,
asked by LoyaltyIsFake 
Math
0.5% of what number is 15? how do I approach this problem? Please help!
asked by Nikko 
Technology
What type of structure would house the circuit most effectively?
asked by Lonwabo 
math
what is the anwser to q+(9)=12
asked by codename04 
English
posted by rfvv yesterday at 5:17pm. posted by rfvv today at 8:58am. 1. You need not have done it. 2. You need have done it.  Are they all grammatical? â€¢ Engish  Writeacher today at 9:05am 1 is okay, but 2 is not. 2 could be
asked by rfvv 
math
simplify 8/2 + 9 (12 divided by 3x2)7 explain each of your steps i thought it was 1
asked by jack 
Physics
An archer fires an arrow, which produces a muffled "thwok" sound after it hits a target. The archer hears the "thwok" exactly 2.6 s after firing the arrow and the average speed of the arrow is 36 m/s. Find the distance separating the archer and the
asked by Adam 
Math
Find all real numbers t such that (2/3)t 1 < t + 7 is < or = to 2t + 15. Give your answer as an interval.
asked by Wyatt 
math
440 squre feet how muach need paint
asked by man 
english 4
what's the difference between beowulf and the narrator
asked by sandra 
Math
Is the (4, 1) a solution to the equation y = x + 3? I honestly have no idea what this means. Does y = 4 and 1 = x? If not then the answer should be no since (4, 1) is part of a graph
asked by NotAFan 
Math
The distance from city A to city B is approx. 2160 miles. A plane flying directly to city B passes over A at noon. If the plane travels at 500 mph, find the rule of the function f(t) that gives the distance of the plane from city B at time t hours (with
asked by Florrie 
History
In which way might the Spanish choice to claim North America land be considered controversial? A: Spanish explorers promised to free the slaves of North America. B: Spanish explorers failed to convert native people to Christianity. C: Spanish explorers
asked by History help! 
Algebra
m + 15= 29 Please I need help with this TEST IVE BEEN ON IT FOR A WHOLE WEEK (ANY ANSWERS IN ADVANCE THANK YHUUUUUUUUU
asked by Lesson 9 Unit Test integers and Algebra 
Science
The density of a loaf of bread with a mass of 500 g and a volume of 2500 cm3.
asked by Celeste 
Global history
Use different colors or different patterns to shade the locations of the following early civilizations and create a key in the blank box
asked by Thais 
Math
What is the work for the problem 61,125 divided by125
asked by Jose 
Science
Please help Me With These Questions 1.what is one difference between the scientific theory and scientific law 2. what are two similarities a scientific theory and scientific law 3. Sam noticed every time she rolled a ball on a flat surface it did not stop
asked by Young Lil G 
Math
Divide and simplify: 7^8/7^2
asked by Suzie 
Chemistry.. am I correct?
Fill in the blanks correctly Observation  hypothesis  theory  law 1. A system of ideas or principles which are a set of organized provisions. observation 2. An approval, suggesting evidence. hypothesis 3. An organized perception of phenomena with
asked by ANON 
High school Chemistry
Choose the correct names of the atoms or molecules. Check all that apply Silicium Carbon monoxide Mercurium Hydrogen chloride Iron Boron monoxide Fluorine Sodium trichloride Molybdenum
asked by Emily 
maths
1+tan^2(theta)/1+cot^(theta)=[1tan(theta)]^2/[1cot(theta)]^2
asked by prachi 
Mean worksheet
The mean of two numbers is 10, and one number is 6more than the other. What is the value of the smaller of the two numbers?
asked by Janiesha 
Science
The formula wt of h2so4 is98bthe wt of the acid in 400ml of 0.1M solution is
asked by Anonymous 
Math
3 less than b is 43
asked by Anonymous 
science
describe the relationship among energy absorption, heat energy, and temperature
asked by teresa 
Science
why would a DNA structure in which each base type could form hydrogen bonds with any of the other 3 base types not produce a molecule that could be replicated easily?.
asked by Linda 
Physics
How come in the number 5.350, there are 4 significant figures? Is the 0 considered a trailing zero with a decimal?
asked by Kara 
Science
I am trying to come up with an example but i need to know how a refrigerator works. Please keep it simple. or example explaining how being able to understand scientific principles and think scientifically can help you solve problems and answer questions in
asked by :) 
Science
I need to know how a refrigerator works to come up with an example. Please keep it simple and easy to understand. or an example explaining how being able to understand scientific principles and think scientifically can help you solve problems and answer
asked by :) 
math
sara inspected the horses and hens in her farm one morning. Afterwards, we could not remember how many animals of each kind she had, but knew the total number of these animals was 27, her own age in 1997. She also knew that the total number of legs was 70,
asked by kelley 
Chemistry
How many total mL of 1 M NaOH can you add to the solution in problem 1 and still have a good buffer (that is, within 1 pH unit of the pka)?
asked by Irving 
Applying Rational Numbers//Math
Estimate this answer. Explain your reasoning One half liter of lemonade concentrate is added to 3 liters of water. How many 1/3 liter of servings of lemonade are made? Thx for the help you who is looking at this math problem
asked by Human Being 
science
What is the cell structure involved photosynthesis
asked by Anonymous