# samantha

Newest questions posted by samantha-
## math

6.use the remainder theorem to determine if x-2 is a factor of the polynomial f(x)=3x^5-7x^3-11x^2+2 please help... -
## calculus

1.is the function f(X)=4-7x^5 a polynomial function? if so state its degree and leading coefficient. 6.use the remainder theorem to determine if x-2 is a factor of the polynomial f(x)=3x^5-7x^3-11x^2+2 -
## Math

Fifteen numbers are written on the circle. Each number is equal to the absolute value of the difference of the next two numbers (moving clockwise). Find the greatest of the numbers, if sum of all numbers is 2. -
## history

Adams was an accomplished patriot who was instrumental in establishing the United States and its government. However, many people believed that the Adams administration was a setback, and that his presidency did more harm than good to the new nation. Was -
## grammar

which is the command (select one) 1) Whisk the egg please 2) Open that door now 3) Why are you standing there -
## Physical education

What are the branches of physical education? -
## Physical education

What are the branches of physical education? -
## Physics

A golfer on a level fairway hits a ball at an angle of 25° to the horizontal that travels 103 yd before striking the ground. He then hits another ball from the same spot with the same speed, but at a different angle. This ball also travels 103 yd. At what -
## English

How countlessly they congregate O'er our tumultuous snow, Which flows in shapes as tall as trees When wintry winds do blow!-- As if with keenness for our fate, Our faltering few steps on To white rest, and a place of rest Invisible at dawn,-- And yet with -
## Math

Sue left her home at 6 A.M. driving her car at the rate of 50 miles per hour. At 8 A.M. her brother Kevin drove after her along the same highway, traveling at the rate of 60 miles per hour, in how many hours did Kevin pass Sue? I got 10 hours but that is -
## Math

If the probability of an event occurring is 1/y, what is the probability that the event will not occur? A. y B. y-1/y C. y/y-1 D. 1-y/y Is it B? -
## Science

Which type of rock forms from magma and contains large interlocking crystals? -
## Chemistry

3.A sealed balloon contains 62mL of carbon dioxide is in a freezer at -15degrees celsius. The balloon is then removed to the interior of a car that has been sitting there this summer sun and is at 72degrees celsius. Assuming the balloon remains sealed and -
## Chemistry

2.Which gas law would you use to calculate the new pressure for a gas when the volume of the trapped gas changes well temperature remains constant? -
## Chemistry

1.What is important to remember about the temperature unit for any gas law calculation? -
## Chemistry

Can someone link me videos and sites that can teach me the formula to solve these? Or try to help me understand how to solve these? 1.You have 200g of a radioisotope . If the half-life of this radioisotope is 20 days, how many grams will remain after 40 -
## Chemistry

1.what is the type of radiation (alpha,beta, or gamma) is represented by each of the following. A)the most penetrating type of radiation is B) When this particle is emitted an atom of carbon (atomic number 6) will change to an atom of nitrogen (atomic -
## Math

Solve the system of equations using Row Operations x + y - z = 6 3x - 2y + z = -5 x + 3y - 2z = 14 -
## Algebra

How can you write the expression with a rationalized denominator? 3sqrt 2/3 sqrt 6 A) 3sqrt9/3*** B) 2+3sqrt9/6 C) 3sqrt9/6 D) 3sqrt72/3 Let f(x)=x^2+7 and g(x)=x+3/x. find (g*f)(-5) A) 35/12 B) 35/32 C) 32/35 D) 11/25*** Please correct me if I’m wrong -
## Chemistry

1.Identify the type of isomer (structural, geometric, or optical) each of the following pairs represents. A. CHBrClF and CHBrFCl B. n-butane and 2-methylpropane C. trans-2-pentene and cis-2-pentene For A I think it would be Geometric For B I think it would -
## Chemistry

1. Identify the organic compound type for each of the following (for example: ketone, ester, etc) A. Propanol B. CH3COOH C. ROR D. CH3NH2 E. Methyl methanoate My answers: A. Alcohol B. Ethanol C. Ether D. Ammonia E. Ester Please help correct what I’m -
## Chemistry

1. Identify the organic compound type for each of the following (for example: ketone, ester, etc) A. Propanol B. CH3COOH C. ROR D. CH3NH2 E. Methyl methanoate -
## Chemistry

Given the following balanced equation: 2Na + Cl2 ---> 2NaCl A.List each element on the reactant side and each element on the product side and assign the correct oxidation number to each. B.Identify which element is oxidized in the reaction and which is -
## Chemistry

4HCI(g)+O2(g)2CI2(g)+2H2O(g) How would the equilibrium shift if: A. The amount of HCI was increased? B. If water was added? C. If oxygen was removed? -
## Chemistry

I need help plugging these in. I didn’t understand what DrBoB222 meant 2.A student starts with a titration by placing 30.0mL of 0.25M NaOH into a flask with 3 drops of phenolphthalein. The student then titrated to the endpoint using 18.0mL of HCI. -
## Chemistry

(I need help with these two questions. I don’t know how to solve it.) 1. A student takes 215mL of a 5.0M HCI solution and places it into a beaker. The students then adds enough water to the beaker to make 750mL. Calculator molarity of this new solution. -
## Chemistry

(My answers) 1. A sample of gas occupies 33 mL at -101 Celsius what volume does the sample occupy at 97 Celsius? (70.578) 2. There is a balloon that contains 2125 L of gas at 55 Celsius and 99 kPa. This balloon rises to an altitude where the pressure is -
## Chemistry

I need help solving these. I don’t know what formula to use for them. There’s the (Boyle’s law, Kevin’s law, Charles law, and Gays law). Can someone help me figure out which law I’m supposed to use? -
## Algebra

Today I’m learning something new but I don’t know how to solve this. I have 2 questions about it but I feel as if, if someone explain/ show how I can complete the first one I’ll be fine with doing the second one in my own. How is a graph different -
## Algebra

Let g(x)=3x+2 and f(x)=(x-2)/3 Find the value. f(g(0)) I think I figured out part of it. g(0)=3(0)+2=2 g(2)=3(2)+2=8 f(8)=((8)-2)/3=6/3=2 If this is correct, idk where to go from here. -
## algebra

What is the result when 2x^3 -9x^2 +11x-6 is divided by x-3? I have no idea how to even start solving this. -
## algebra

Solve In 4+in(3x)=2 round to the nearest hundredth -
## math

Compare the function with the parent function. What are the vertex, axis of symmetry, and transformations of the given function? y = |10x-2| -7 -
## math

Name the property of real numbers illustrated by the equation -3(x+4)=-3x-12 -
## math

Use the quadratic formula to solve the equation -x^2 + 7x = 8 -
## math

which matrix represents the system of equations below -12x-13y+13z=15 -
## Math

The velocity time graph shows the movement of a particle alobg a straight line. The particle passes a point, A, when t=0. It maontains a constant spee, u ms -1, for T seconds and then decelerates uniformly before coming to rest at B. If the average speed -
## Chemistry

Good morning. I need help solving 2 problems for chemistry. For #1 I need someone to check my work and tell me if I did it wrong and show me how and where I went wrong. And for #2 I need someone to help me figure out how to solve it and explain. 1. With -
## Math

A machine produces 75 widgets an hr how many widgets would the machine produce in six mins -
## Chemistry

If you have 2.2x10^24 molecules of O2 at STP, how many liters of O2 do you have? Can someone show me how to solve this -
## Chemistry

Is there a chemistry teacher for jiskha? Or someone that knows what my teacher is talking about? :’( He wants me to: Calculate the number of moles of CO2 in 63.0g of CO2 -
## Algebra

1.what is a polynomial function in standard form with zeros 1,2,-2, and -3 A. X^4+2x^3+7^2-8x+12 B. X^4+2x^3-7^2-8x+12 C. X^4+2x^3-7^2+8x+12 D. X^4+2x^3+7^2+8x+12 I’m guessing B but I’m honestly not sure on what I’m doing -
## statistics

In 2000, National data suggested that 26% of all U.S. businesses were owned by women. In 2009, a consulting firm surveyed a random sample of 700 U.S. businesses and found that 28% of them were owned by women. Is this evidence of an increase in the -
## Math

When doing a calculation involving zoning laws, Tim comes across the following expression: fraction a- open vertical bar a close vertical bar over denominator a end fraction, where a is either a positive or a negative number. (A) What is the value of the -
## Math

Tim’s client wants to sell her house and needs an estimate of its value. To get an initial estimate, Tim averages the sale price of similar homes in the area. He also adjusts the value of each of these homes using a multiplier to take any differences in -
## Algebra

Simplify the expression -5+i/2i I typed this problem into mathway and they told me the answer was 1/2+5i/2 but wouldn’t show me how they got it. They said to (“multiply by the conjugate and simplify”) but I have no clue on what the conjugate is and -
## Algebra

How do I solve this For (-x)? (Do I just make -x equal 1 or 2?) I’m suppose to solve the equation by elimination. (Can someone give me steps to solving it and I’ll try to do it and you guys check my work?) 7x-9y=21 -x-18y=-3 -
## Algebra

Ok, I tried watching a video on how to solve a system by substitution. But I feel like I did it wrong, so can someone check my work and show/ tell me where I went wrong. So the system by substitution -2x-3y=-2 Y=2x+6 First I combined my 2 equations but -
## math

Four friends go to a restaurant. After adding a $6 tip they decide to split the bill evenly. If they each paid $9.26, how much was the bill -
## Algebra

1. I need help solving the system by substitution -x-y-z=-8 -4x+4y+5z=7 2x+2z=4 -
## Algebra

Can someone show me how to solve the system by elimination with? -2x+2y+3z=0 -2x-y+z=-3 2x+3y+3z=5 -
## Algebra

I need help learning to solve substitution. I have a problem that says solve the system by substitution -4.5x-2y=-12.5 3.25x-y=-0.75 -
## math

The Nuthouse offers a mixture of soy nuts and almonds. Almonds sell for $7 per pound and soy nuts sell for $5.50 per pound. The Nuthouse will make 20 pounds of the mixed nuts and sell the mixture for $5.95 per pound. The following equations represent the -
## Math

A football team lost 9 yards on each of three consecutive plays. What was the team's total change in position for the three plays? -
## Algebra

I'm really confused and I just don't understand what to do. Please help! Simplify each expression by combining like terms -8(n - 5) + 4(n + 1) = ? Please help! -
## Math

A box turtle Marcos found is 0.115 of a meter long.What is this length in expanded form? -
## Math

The width of a rectang;e is w=r-5 and the area is r^3-24-5. What is the length? Please tell me how you solved. Thank you. -
## English

1. Identify the correctly punctuated sentence. A. Monarch butterflies migrate long distances each year—other butterflies live in southern climates throughout the year. B. Monarch butterflies migrate long distances each year, other butterflies live in -
## English

1. Read the following passage from "The Swimming Contest". "Come over here, Nahida," the old lady said," and kiss the hand of the hakima who cured your grandmother. And this is her son." Nahida came hesitantly into the room and stood in front of my mother. -
## English

1. All of the following quotes from "The Swimming Contest" are intended to foreshadow the future conflict between the narrator and Abdul-Karim EXCEPT A. "But it's not true that we're driving the Arabs out. We are out for peace, not war."***** B. -
## English

1. Read the following passage from "The Swimming Contest." With a sigh my mother replies, "My husband's no longer alive, either. But his house and his father's house aren't here; everything remained over there, abroad, and I live in a rented apartment -
## English {2 Questions}

1. Identify the statement that is a verifiable fact. A. Teenagers seem to prefer texting to talking when it comes to cell phone use. B. Lifeguarding is one of the easiest and most lucrative summer jobs for teenagers. C. The number of teenagers who own and -
## Trig

Right triangle PQR with the right angle at Q has one side measuring 46 feet and the hypotenuse measuring 54 feet. Find the other side as a radical in simplified radical form and to the nearest tenth. -
## Trig

Is a triangle that has sides which measure 8, 15, and 17 a right triangle? Justify your answer, ie, -
## Trig Help Please

A smokestack is 200 ft high. A guy wire must be fastened to the stack 30.0 ft from the top. The guy wire makes an angle of 42.0° with the ground. Find the length of the guy wire. -
## Trig

A conveyor is used to lift paper to a shredder. The most efficient operating angle of elevation for the conveyor is 35.2°. The paper is to be elevated 16.0 m. What length of conveyor is needed? -
## Algebra 1

The growth of Trevor's lawn can be modeled by the equation y = .4x + 7, where the y is the height of the grass in centimeters, and x is the number of days since the lawn was last mowed. what is the meaning of the y-intercept of this equation? a) Trevor -
## Pre calc

Find all primary solutions (i.e. 0 ≤ θ < 2π ) of the equation cos(2θ ) = 4 − 3 cos(θ ). Find all primary solutions (i.e. 0 ≤ θ < 2π ) of the equation cos(2θ )cos(θ ) = sin(2θ )sin(θ ). Please can somone help and show all work Thank you -
## Pre calc

Find all primary solutions (i.e. 0 ≤ θ < 2π ) of the equation cos(2θ ) = 4 − 3 cos(θ ). Find all primary solutions (i.e. 0 ≤ θ < 2π ) of the equation cos(2θ )cos(θ ) = sin(2θ )sin(θ ). Please can somone help and show all work Thank you -
## Pre calc

An equation is given. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to three decimal places where appropriate. Find All solutions of the equation 2sin(theta/3)+ square root three =0 -
## Science

Hi! I just want to make sure my answers are correct. (Key: * means that is my answer.) A basketball momentarily changes shape as it bounces off the floor. This is due to balanced forces on the ball. True False* A ball slowing down as it rolls across the -
## Pre calc

Given that tanθ = 2 root 10 over 9 and cscθ < 0 , find the exact value of cos(θ − pie over 4) . I solved for the other side and got 11. After this idk what to do I was thinking using cos(a-b)=cos(a)cos(b)-sin(a)sin(b) but idk how to witht the pie/4 -
## Pre calc

Solve the given equation cos(θ) − sin(θ) = 1 I got the answer to be 3pie/2 and 0 but its wrong can someone help Thank you -
## pre calc

solve the given equation cos(θ) − sin(θ) = 1 -
## Pre calc

Someone please help me prove these A) cos^4x-sin^4x=cos2x B)tanx=sin^2x/1+cos^2x Please and Thank you -
## Health safety and nutrition

Describe the steps to a healthy menu for infants, toddlers, and children. -
## Pre-Cal: Limacons

Write the equations for two limacons (and if possible graph), (one sine and one cosine) with the same a and b values. (A does not have to equal b). You may choose to use cardioids or inner loop, dimpled, or convex limacons. -
## Mat222

Suppose that the functions S and T are define for all real numbers x as follow. s(x)=x-3 t(x)=3x+1 Write the expressions for (s-t)(x)and (s.t)(x) and evaluate (s+t(-2) -
## Chemistry

What ratio of molar concentrations of sodium acetate to acetic acid can buffer a solution at a pH of 4.89? -
## social studys

Compare and contrast the rise and fall of Germany and japan during the period of world war Il Please help me with this. -
## Biology

the eventual evolution of living organisms on earth is based upon the following theory: during the early stages of the earth's history the chemical characteristics of the world changed as the conditions on the planet changed. The changes established the -
## mat222

Suppose that the function h is defined, for all real numbers, as follows. =hx −4 if x2 Find h0 , h2 , and h5 . -
## Mat222

I am having a hard time finding the domain, set notation,excluded value. Rational expression 1. Y^2+11y+30/y+5 Rational expression 2. 5a-3/a^2-49 -
## social studys

what was the purpose of the war production board A. to tell factories how many planes or tanks each factory had to produce. B. to help factories shift from making consumer goods to making war materials.****** C. to ship war materials over to the allies D. -
## Math/Calculus

Use the Shell Method to calculate the volume of rotation, V, about the x-axis for the region underneath the graph of y=(x-2)^(1/3)-2 where 10 less than or equal to x which is less than or equal to 218. -
## English

So I am answering some questions regarding the motifs of Macbeth. I was wondering if the quotes I have chosen are the right choices for each motif. I'm supposed to find quotes from the closing lines of Malcolm after killing Macbeth 1. Fair is foul and foul -
## stats

a statistics professor rolls two balanced dice. Both fall to the floor and roll under his desk. A student in the first row informs the professor that he can see both dice. He reports that at least one of them shows a “five”. What is the probability -
## statistics

professor rolls two balanced dice. Both fall to the floor and roll under his desk. A student in the first row informs the professor that he can see both dice. He reports that at least one of them shows a “five”. What is the probability that the other -
## MaTHS

Prove that if two lines with gradients m1 and m2 meet at an angle of 45°, then m1xm2 = m1-m2-1 or m1xm2 = m2-m1-1 Please help!! Ty xoxoxox -
## math

Sam charges a $5 travel fee and then $3.25 per hour for labor. How many hours will he need to work to make $18? -
## social studys

why did mass culture in the form of entertainment emerge in the 1920's -
## Chemistry

Calculate the pH values and draw the titration curve for the titration of 500 mL of 0.010 M acetic acid (pKa 4.76) with 0.010 MKOH. Calculate the pH of the solution after 490 mL of the titrant have been added. -
## biochemistry

Which statements about hydrogen bonds are correct? 1) Hydrogen bonds are the interaction between a hydrogen atom bonded to an electronegative element and the lone pair of electrons on a nearby electronegative atom. 2) The atom to which the hydrogen atom is -
## biochemistry

Which of the following statements about noncovalent bonding interactions is NOT true? Which of the following statements about noncovalent bonding interactions is NOT true? All noncovalent bond interactions are inherently electrostatic in nature. Van der -
## biochemistry

Suppose the concentration of glucose inside a cell is 0.1 mM and the cell is suspended in a glucose solution of 0.01 mM. What would be the free energy change involved in transporting 10?6 mole of glucose from the medium into the cell? Assume T= 37 ?C. -
## writing

What are two butterfly similes and metaphors that rhyme? -
## writing

What is a example of a onomatopoeia for a butterfly? -
## Chemisty

In an experiment, 6.25 g of NH3 are allowed to react with 8.50 g of O2. The chemical equation for the reaction is 4NH3 + 5O2 → 4NO + 6 H2O. How many grams of water are produced? Which reactant limits the production of water? Which reactant is in excess? -
## American Government

"The judicial Power shall extend to all Cases, in Law and Equity, arising under this Constitution, the Laws of the United States, and Treaties made, or which shall be made, under their Authority..." Read the passage. How does the Constitution establish the -
## American Government

Which process came under scrutiny during the 200 presidential election of George W. Bush? (1 point) A) Due process B) Electoral College C) Declare war D) Legislative process