# zachary

Newest questions posted by zachary-
## Physics

A concave spherical mirror has a radius of curvature of 29.4 cm . The object distance is 5.7 cm .Scale: 10 cm = Find the magnitude of the image distance. Answer in units of cm. 2- Find the magnification. -
## physics

A concave mirror has a radius of curvature of 1.61 m. Calculate the position of the image produced when an object is placed 2.66 m from the mirror. Answer in units of m. -
## physics

An excited atom emits a photon of a certain frequency. Then two photons of this frequency fly towards the atom. Which of the following is likely to happen next? 1. An atom will emit another photon of the same frequency. 2. The atom will absorb one of the -
## Math

A charity raffle offers a first prize of $1,000,000, a second place prize of $100,000 and a third place prize of $10,000. A total of 500 000 tickets will be sold. What price should be charged for a ticket in order for the charity to make a 60% profit on -
## Math

In its Flip Your Lid contest, a coffee chain offers prizes of 50 000 free coffees, each worth $1.50; two new TVs, each worth $1200; a snowmobile worth $15 000; and a sports car worth $35 000. A total of 1 000 000 promotional coffee cups have been printed -
## physics

Two workers are sliding 450 kg crate across the floor. One worker pushes forward on the crate with a force of 380 N while the other pulls in the same direction with a force of 380 N using a rope connected to the crate. Both forces are horizontal, and the -
## Physics

Consider the motion of the two projectiles fired at t = 0. Their initial speeds are both v0 but they are fired with different initial angles θ1 and θ2 with respect to the horizontal. What is the ratio of the times of the flights? -
## Chemistry

Consider the Unbalanced Reaction: Al2O3(s) + CO(g) → Al(s) + CO2(g) Estimate ∆G at 298 K if 7.1 moles of Al2O3(s) is reacted. -
## Physics

Alice is going on a picnic and is aware that it will be easier to carry the picnic basket if it balances at the center where the handle is attached. She has placed a 2.15-kg container of potato salad at one end and a 0.750-kg package of hot dogs at the -
## lego robotics

WHY DID THEY NOT LET ME IN!!!!!????? -
## Math

Jan and Susan went to the movies.it was 2 hours and 18 minutes long.it ended at 6:00.what time what time did it start -
## Math

1. Find the horizontal change and the vertical change for the translation P(4,-4) (-4,7) A. Right 8; up 11 B. Left 8; down 11 C. Right 8; down 11•• D. Left 8; up 11 2. The point c(x,y) is reflected over the x-axis. Use arrow notations to describe the -
## Math

The point (3,-1) is translated to the left 4 units and up 1 unit.write a rule to describe the translation.what are the coordinates of the image point? A) (x,y)->(x+4,y+1);(7,-2) B) (x,y)->(x-4,y-1);(-1,0) C) (x,y)->(x+4,y-1);(7,0) D) -
## Language

In which sentence is the meaning of the word astonish expressed? A. Marley says that nothing will surprise Scrooge, given all that he has seen.•• B. Christmas present asks Scrooge to touch his robe. C. Fred's wife expressed her pleasure at the amount -
## Language

in which line is the opposite of the word audible best expressed? " Spirit tell me if Tiny Tim will live" " Save your Breath Mr. Scrooge. You can't be...... heard"•• "I'll drink to his health for your sake..... But not for his sake" "Mark my words, -
## Language

In which of those lines is the meaning of the word intercede best expressed? A. The attacker between the goal and goalie. B. In court cases, attorney intercede on their client's behalf.•• C. If you don't agree with someone you should try to Intercede. -
## Math

3. Determine which ordered pair is a solution of y = –5x + 10. (1 point) (–15, 5)•• (2, 0) (–1, –5) (3, 25) Correct my answers -
## math

Mimi's market sold 24 heads of lettuce one morning. That afternoon 2/7 of the remaining heads of lettuce were sold. The number of heads left is now 1/2 of the number the market had at the beginning of the day. How many heads of lettuce were there at the -
## Math

Explain how u can write 35% as a sum of 2 benchmarks percents or as multiple of a percent? PLEASE TELL ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!:) -
## ENGLISH

Please help me to pick out 6 lines from the poem Invictus of William Ernest Henley that used sensory images and identify the sense used for each line.I also need to pick out one line that used onomatopoeia. I only Have one answer Black as the pit from pole -
## science

Is it bad to shave the pubic hair? Why or why not? How does shaving affects the growth of pubic hair? -
## Computer

Our professor wants us to get more likes on our facebook account. Can anyone tell how? -
## Computer

Our professor wants us to get more likes on our facebook account. Can anyone tell how? -
## ENGLISH

CHOOSE THE BARE INFINITIVE IN EACH SENTENCE. 1.make them feel the need to rise and give you a hand. 2.The judge noticed the witness nod his head with approval. 3.The coach saw his players look at one another with enthusiasm. 4.The teacher let her students -
## ENGLISH

IDENTIFY THE PARTICIPLE IN EACH SENTENCE. 1.No one answered the ringing phone. 2.The meeting, noisy and disorganized, was a waste of time. 3.The speeding car almost crashed. 4.A boiled egg has fewer calories then a hamburger. 5.She wore a wrinkled blouse. -
## Chemistry

The following questions refer to the following acids and bases. A) Hydrazoic acid HN3 Ka = 1.9 x 10^-5 B) Hydrofluoric acid HF Ka = 6.8 x 10 ^-4 C) Nitrous Acid HNO2 Ka = 4.5 x 10^-4 D) Phenol C6H5OH Ka = 1.3 x 10^-10 E) Aniline C6H5NH2 Ka = 4.3 x 10^-10 -
## Strayer

Which of the following units could be associated with a vector quantity -
## Social Studies (History)

When searching for evidence to support a claim, what are important things to remember? Please explain your response. -
## physics

A certain LCD projector contains a single thin lens. An object 23.5 mm high is to be projected so that its image fills a screen 1.87 m high. The object-to-screen distance is 3.05 m. (a) Determine the focal length of the projection lens. mm (b) How far from -
## urgent urgent algebra / precalculas

1. Given a function,H(x)explain how to find the components f(X)AND g(x) such that f(g(x)) = H(x) 2. let H(x)=(2x+5)^4 find the function f and , so that f(g(X))=H(x) -
## urgent urgent algebra / precalculas

For # 1, im getting stuck on this problem i don't understand this 1.4 = e ^ (0.03k) Now take the natural logarithm of both sides to solve for , ln 1.4 = ln e ^ (0.03k) ln 1.4 = 0.03k * ln e Recall that ln e = 1. ln 1.4 = 0.03 k Solve for k. Then try part -
## urgent urgent algebra / precalculas

rewrite each in exponential expression as a logarithmic expression log, x=4 log 5=2 log b=x -
## urgent urgent algebra

rewrite each in exponential expression as a logarithmic expression a)log,x=4 b)log 5=2 c)log ,8=x -
## algebra URGENT HELP

cohol and Driving The concentration of alcohol in a person’s bloodstream is measurable. Suppose that the relative risk R of having an accident while driving a car can be modeled by the equation R = e kx where x is the percent of concentration of alcohol -
## urgent urgent algebra / precalculas

lcohol and Driving The concentration of alcohol in a person’s bloodstream is measurable. Suppose that the relative risk R of having an accident while driving a car can be modeled by the equation R = e kx where x is the percent of concentration of alcohol -
## urgent urgent algebra / precalculas

Alcohol and Driving The concentration of alcohol in a person’s bloodstream is measurable. Suppose that the relative risk R of having an accident while driving a car can be modeled by the equation R = e kx where x is the percent of concentration of -
## urgent urgent algebra

find the composite function fog f(X) = 1/X-5,g(x)-6/x question 2 find inverse, domain range and asymatotes of each function f(x)=3+e^4-x can some one help me please been stuck on these for 2 days need help solving thank you -
## algebra URGENT HELP

7x-6 greater than or equal to -3x^2 reduced and written in interval notation -
## algebra URGENT HELP

x+14/x-8 ≥ 1 solve and write solution in interval notation -
## algebra URGENT HELP

analyze the graph of the following function solve R(x)=x(x-16)^2 /(x+11) solve the following inequality write solution in interval notation x+14/x-8 less than or equal to 1 -
## algebra URGENT HELP

form a polynomial whose degree and zeros are given. don't expand a) degree 3,zeros,-2,0,4 b)degree 4,zeros, -2 multiplicity 3,1 multiplicity 1 solutions a)p(x)= x(x+2)(x-4) B)p(x) =(x+2)^3(x-1) -
## algebra URGENT HELP

A)p(x)= x(x+2)(x-4) b)p(x)=(x+2)^3(x-1) -
## algebra

p(X)= X(X+2)(X-4) P(X)=(X+2)^3(X-1) -
## algebra

solve A)p(x)= x(x+2)(x-4) b)p(x)=(x+2)^3(x-1) -
## college algebra

given the following polynomial find the zero and multiply of each were the graph touches the x axis number of turning points fx =(x-4)(x^2-25) -
## college algebra

Given the following quadratic equation, find;? a. the vertex b. the axis of symmetry c. the intercepts d. the domain e. the range f. the interval where the function is increasing, and g. the interval where the function is decreasing h. Graph the function. -
## help college algebra

given the following piecewise function f(x) = -x+1 for x -
## college algebra

given the function fx=x^3+x a) find the rate of change between the two stated values for x: 1 to 2 B)find the equation of a secant line containing the given points (1,f(1))and (2,f(2) -
## algebra

what are the intercepts of y=2x+2 -
## math

solve for x 75=13^x -
## Math

Rearrange this equation to isolate c. a=b((1/c)-(1-d)) -
## college chem

Biphenyl, C12H10, is a nonvolatile, non ionizing solute that is soluble in benzene, C6H6. At 25 °C, the vapor pressure of pure benzene is 100.84 torr. What is the vapor pressure of a solution made from dissolving 14.3 g of biphenyl in 25.8 g of benzene? -
## urgent urgent urgent

what is the chemical make up of actin and myocin -
## urgent urgent urgent

A freshman studying medicine at an Ivy League College is a part of his class crew team and exercises regularly. After a particularly strenuous exercise session, he experiences severe cramps in his thighs and pain in his biceps. •Explain the chemical -
## urgent urgent urgent

A freshman studying medicine at an Ivy League College is a part of his class crew team and exercises regularly. After a particularly strenuous exercise session, he experiences severe cramps in his thighs and pain in his biceps. explain the process the -
## chemstry

the hiv virus that causes aids destroys the immune system in the body. classify the hiv virus and explain the statement -
## chemistry urgent urgent

... the hiv virus that causes aids destroys the immune system in the body. classify the hiv virus and explain the statement. -
## Math

Emily wants to make a rectangular model with a height of one connecting cube. She wants to make the model in exactly 2 different ways. How many connecting cubes could Emily use to make the model in only two ways -
## chemstry

Classify six kinds of amino acids according to the functions that they serve in the human body, stating an example for each class. -
## chemistry urgent urgent

Discuss, in detail, the role played by DNA and RNA in genetic diseases. What are the breakthroughs, if any, in the treatment/management of genetic diseases? -
## chemistry urgent urgent

the managing director of a company on wall street thrives on a diet of fruit jam,bread,pasta,and coffee.she exercises intermittently.one day she desides to go to her primary healthcare provider for a check up the provider recommends that she takes the -
## chemistry

A freshman is currently enjoying the Arts Studio program she is pursuing at a well-known university. In her free time, she likes to skate, take salsa dance lessons, and cook. She particularly enjoys pickling and decides to pickle olives over a leisurely -
## chemistry urgent urgent

Analyze the properties of a sodium atom and a sodium ion. What are the differences in mass, stability, and reactivity that are caused due to the differences between the sodium atom and sodium ion? -
## Chemistry: Dr. Bob, can you check my work?

In the "Methode Champenoise," grape juice is fermented in a wine bottle to produce sparkling wine. The reaction is given below. C6H12O6(aq) 2 C2H5OH(aq) + 2 CO2(g) Fermentation of 712 mL grape juice (density = 1.0 g/cm3) is allowed to take place in a -
## Chemistry

In the "Methode Champenoise," grape juice is fermented in a wine bottle to produce sparkling wine. The reaction is given below. C6H12O6(aq) 2 C2H5OH(aq) + 2 CO2(g) Fermentation of 712 mL grape juice (density = 1.0 g/cm3) is allowed to take place in a -
## History

Write a thank you veteran card -
## college algebra

given the following rational, find the horizontal asympotes the vertical asymptotes if any and the oblique asymptotes if any f(x)=x^2-x-2 over 2x^2-x-10 -
## college algebra

given the folowing quadratic equations find the vertex the axis of symmetry the intercept the domain the range the interval where the function is increasing andthe interval where the function is decreasing graph the function y=X^2+4x -
## college algebra

given function f(X)=X^3+3x findthe rate of change between the two stated values for x:1 to 2 find the equation of a secant line (1,f(1)and(2,f(2)) -
## college algebra

graph the following function using transformations, be sure to graph all of the stages on one grph, state the domain and range y= x^2 +12x -
## college algebra

given the function f(x)= x^3+3x find the rate of chnge between the two values x:1 to 2 find the equation of a secant line containing the given points (1,f(1) and (2,f(2)) -
## college algebra

graph the following function using transformations, be sure to graph all of the stages one graph, state the domain and the range y=x^2+12x -
## college algebra

given the functionf(x)=x^3+3x find the rateof change between the two stated values for x:1 to 2 find the equation of a secant line containig the given points (1,f(1))and (2,f(2)) -
## college algebra

write the equation of the circle in standard form find the center radius, intercept and graph circle x^2 +y^2+8x+2y+8=0 -
## college algebra

for the given equation list the intercepts and test for symmetry y = x^3 -512 -
## Chemistry

Based on the mass of barium sulfate (0.46g), calculate the mass of sulfate in a 0.7g sample of alum. I think I did this right but i'm not sure. 0.46g BaSO4/233.37g BaSO4=0.002mol BaSO4 0.002mol BaSO4 x 1mol SO4/1molBaSO4=0.002molSO4 -
## Chemistry

How would I find the limiting reagent in the chemical equation...CuSO4*5H2O+2K2C2O4*H2O-->K2[Cu(C2O4)2]*2H2O+K2SO4+5H2O I got that K2C2O4 was the limiting reagent but I don't know if that is correct. -
## Math

Jenifer works in a flower shop. On Saturday she started work at 8:45 a.m. She finsihed at 4:15 p.m. How many hours did Jenifer work after noon? -
## algebra

The week before the big concert, five friends Alan, Ben, Cameron, Derryck, and Garrett, stood in line to buy tickets. There were other people there, but the five friends were in the line in the order listed above. The line was really long, and they were -
## algebra

The week before the big concert, five friends Alan, Ben, Cameron, Derryck, and Garrett, stood in line to buy tickets. There were other people there, but the five friends were in the line in the order listed above. The line was really long, and they were -
## Math

what is scale -
## english

Cookies and doughnuts were displayed in the bakery window. What is the compuund subject and verb in this sentence? -
## Math

Round 5,024 to the nearest thousands -
## Algebra 2

What is the vertex of the graph of y = |x + 3|? -
## Computer

What general term describes the physical equipment of a computer system, suchn as its video screen,keyboard, and storage devices? -
## software

Software programs that allow you to legally copy files and give them away are called what? -
## Algebra

what is the greatest common monomial factor of 6x^2y^3z^4-4x^3y^3z^3+10xy^3z^4 -
## Physics

a superhero flies 272m from the top of a tall building at an angle of 32 below the horizontal. what is the vertical component of the superhero's displacment? -
## Algebra 1

What is the Advantage of Buying a Magnetic Bullein Board -
## Foreign Languages

Can someone tell me what Melodifestivalen is? -
## Foreign Languages

How do you say "I love you,my love,when I hear the voice I love you,my life is never without you I live my life for you,It's the universe for me I love you,my love,when I her the voice" in French -
## 6th grade

I'm a special ed kid and I need help to unscramble these science words ,itvbarnoeso, lncsuoicno and ecrfenine -
## math

i cant figure out the distributive property of 2a+4b I -
## quadratic

what is -x^2+4=(3x-1)^2 in the form ax^2+bx+c=0 -
## kinematics

these are two similar kinematics maths question which i don't know. Please help! 1)A particle moves in a straight line so that its distance, s metres, from a fixed point O is given by s = 2t^3 - 3t^2 - 12t + 6, where t is the time in seconds after passing -
## social studies

what was william penn's four promises for others to come to philadephia -
## algebra

of ten boxes, five contain pencils, four contain pens, and two contain both pencils and pens. How many boxes are empty?? -
## Chemistry

Calculate the molar mass of a compound that raises the boiling point of water to 100.15oC when 40.5 g of the compound is dissovled in 500 g of water. and A mass of 41 g of an unknown nonelectrolyte is dissolved in 429 g naphthalene. The nonelectrolyte -
## Chemistry

In an experiment 0.5300 g of ferric oxide is reacted with 0.3701 g of carbon monoxide gas according to the equation: Fe2O3 + CO ==> Fe + CO2. A. What is the limiting reactant? B. What mass of the other reactant is in exess? C. What mass of iron is