# Jessica

Newest questions posted by Jessica-
## chemistry

Calculate the energy of a photon of red light with a wavelength of 6.45 x 10-5 cm. h = 6.626 x 10^-34 Js c = 2.998 x 10^8m/s Thank you! -
## Math

For two parallel lines slopes, could one of them be a reduced version of the other. for example would y=1/2x+6 be parallel to y=2/4x+12 don't pay any mind to the y-intercepts, I just randomly pulled them out of my head. I just want to know if lines can be -
## Socials

S.S 10 Why would a prime minister call an early election? What are 5 functions or tasks of party volunteers Please help I am struggling with these two questions -
## math

Using only algebra, find a cubic function with the given zeros. -2, 3, -7 the polynomial function is: f(x)=x^3+ (BLANK) x^2-13x-42 i can't figure out what BLANK is Thank you! -
## Chemistry/math

Convert 2.4 atm to kPa. Does this represent standard pressure? Show all of the work please Thank you!! -
## Chemistry

How could you separate a mixture of water, rock salt, sawdust, and iron filings? Would this require physical means, chemical means, or both? -
## math

Confirm that f and g are inverses by showing the Composition of Inverses Rule for both f(g(x)) and g(f(x)) algebraically: f(x)=9x+3 g(x)= (x-3)/9 thank you! -
## math

Find the algebraic relationship between x and y: x = 5 – 4t^2 and y = 2t - 2 Thank you!! -
## Economics

Give and example in which one person has an absolute advantage in doing something but another person has a comparative advantage. -
## math

Describe how the graph of y = ((2x + 12)^2) + 3 can be obtained from the graph of y = x^2 Thank you! -
## math

How much 10% solution and how much 65% solution should be mixed together to make 100 gal of 35% solution? Thank you!! -
## math

A graph G is obtained from a graph of y by the following sequence of transformations. Write an equation whose graph is G. y=|x|: a shift left 9 units, then a vertical stretch by a factor of 7, and finally a shift down 6 units Thank you so much!!! -
## Math

The smallest figurine in a gift shop is 2 inches tall. The height of each figurine is twice the height of the previous figurine. Write a power to represent the height of the tallest figurine. Then find the height. -
## math

Find f(g(x)) and g(f(x)). State the domain and formula for each. f(x)=7x+8; g(x)=x-3 Thank you!! -
## math

Identify the function that fits the description given below. The six functions that are bounded below. A. y=(x-1)^2 B.y=int(x+1) C. y= -sqrt(x) D. y=x^3+1 E. y=2- (4/(1+e^-x)) F. y=-x G. y = -sin x H. y= |x|-2 I. y= cos x+1 J. y=(x+2)^3 K. y= -1/x L. y= -
## mathematics

A school has enough food to last 90 pupils for 7 days .If 10 more pupils come ,how long would the food last? -
## Math

Mr. Brown owned a house which he rented for $60 a month. The house was assessed at $9000. In 1975 the rate of taxation was increased from $25 to $28 per $1000 assessed valuation. By what amount should the monthly rent have been raised to absorb the -
## Pharmacy calculations

Based on the formula below, what quantities of each are needed to make 180 ml of this lotion? Benzyl Benzoate 250 ml Triethanolamine 5 ml Oleic Acid 20 ml Purified water to make 1000 ml -
## math

Division question John pays 45 dollars months (30 days) for a membership. what is the cost in one day? I don't know if you 45/30 or 30/45 can someone explain it to me -
## English

I have a few questions about grammar 1, Does a sentence that starts of with "if" an independent sentence or a dependant? 2, Does a sentence that starts of with "in order to" an independent sentence or a dependant? 2, is there a comma before “instead -
## Math

A conveyor belt carries supplies from the first floor to the second floor which is 30ft higher. The belt makes a 60 degree angle with the ground. How far do the supplies travel from one end of the conveyor belt to the other to the nearest foot? If the belt -
## science/math

Jane runs a track race at 7.0m/s for 40 seconds using a force of 140N. How much work has she done? (remember s=d/t) -
## Socials

To what extent does nationalism bring people together or drive them apart? What factors influence nationalism and national identity? -
## math

Find the volume of the oblique cylinder. Round to the nearest tenth. Radius-13.8in Height - 20.5in Thank you!! -
## science

An element's atomic number is 52. How many electrons would an atom of this element have? -
## science

Electromagnetic and mechanical waves have different characteristics that make them advantageous for certain applications. Select the reasons that mechanical waves, such as ultrasound, are used for soft tissue imaging and to identify fractures in metals. I) -
## Math/Algebra

The graph of f(x)=sin(x) is transformed into a new function, g(x) , by compressing it vertically by a factor of 1/2 and shifting it 3 units down. What is the equation of the new function g(x) ? -
## Math/Algebra

Let p(x)=90/9+50e ^ −x . What is p(5) ? -
## Math/Algebra

On Dolphin Beach, the high tide is 2.2 meters and only occurs at 12 a.m. and 12 p.m. The low tide is 1 meter and only occurs at 6 a.m. and 6 p.m. Which function models the height of the tide t hours after 12 a.m.? a. h(t)=0.6cos(πt/6)+1.6* b. -
## Math/Algebra

The equation yˆ=−6.2x2+41.5x−5.6 approximates the average number of cars that pass through an intersection x hours after 3:00 p.m. What is the best estimate for the average number of cars that pass through the intersection at 5:30 p.m.? a. 35 -
## Chemistry

What is the net ionic equation for the neutralization of CHOOH with NaOH? -
## math

1)what is the smallest integer greater than 1 that leaves a remainder of 1 when divided by any of the integers 8,9, and 10? 2) The square root of the difference of (B^2 /16) and (b^2/25) 3) Mr. Baker is 30 years old when his son is 4 years old. In how many -
## math

1) the average of four positive numbers is 15. The second number is 2 times the first number. The third number is twice the second. The last number is the last square of the first number. what is the largest number? 2) suppose that 4x^2 + 8xy +4xy^2=576. -
## Geometry

Please help! I can’t figure this out, I’ve got the equation but that’s about as far as I can get. I have to find C sin24/77=sinC/162 -
## law

'Administrative law involves decision making within the bases of a government organisation and deals with powers and functions of the administrative authorities, and the manner in which they form legislations to enforce legal obligations upon individuals.' -
## Law

Can someone please explain to me what is administrative law. (country: Australia) -
## Math

Which is an irrational number? A:0.12*** B:0.1257486 C:0.12121212 D: 0.11111 Please help ;-; Also it would be appreciated if someone gave all the answers to the quiz -
## math

In triangle XYZ, the length of side XY is 29 mm and the length of side YZ is 43 mm. Which of the following could be the length of side XZ? -
## math

Simplify logx(x/4)+3logx(2/5)-log21(2/25) -
## Math

List 12pt 3gal and 16c from least to greatest -
## math

The table below shows the average diameter of a pupil in a person's eye as he or she gets older. age (years). Average Pupil Diameter (mm) 20 4.7 30 4.3 40 3.9 50 3.5 60 3.1 70 2.7 80 2.3 What is the average rate of change, in millimeters per year, of a -
## Math

A parking garage charges a base rate of 3.50 for up to 2 hours, and an hourly rate for each additional hours. The sign below gives the prices for up to 5 hours of parking. Parking rates: 2hrs. $3.50 3hrs. $9.00 4hrs. $14.50 5hrs. $20 Which linear equations -
## General Chemistry II

At a pressure of 1ATM, _____ KJ of heat is needed to vaporize a 32.3 g sample of liquid ethanol at its normal boiling point of 78.4 C. Boiling point (78.4 C), specific heat (2.46 J/g C), and Hvap(78.4 C)=38.6 KJ/mol are provided. Please include how to -
## Math

Evaluate 2/3 x for x=3/4 Hi, I don't know what they are asking me, can anyone help? -
## math

Evaluate (2.1 x 10^4) + (5.68 x 10^-2)Express the result in standard form. Can you explain your steps? I don't understand how to solve this with the negative 2 -
## Math

1) Maria is 6 times as old as Tina. In twenty years, Maria will be only twice as old as Tina. How old is Maria now? Please explain how you got your answer. Thanks! 2) Rating. Relative speed of flow 10W. Half as fast as 5W 15W. Half as fast as 10W 20W. Half -
## Math

Savings-5% Others-25% Food- 10% Housing- 25% All taxes- 35% The pie chart above shows the Carson family's expenses for 1994. The Carsons had an income of $40,000 in 1994. In 1995 the Carsons income was $10,000 greater than in 1994. The family spent the -
## Algebra2A

I am confused with this question: Find teh value of y for a given value of x, if y varies directly with x. If y = 6 when x = 2, what is y when x = 5? -
## Algebra2A

This is one of the questions on the semester exam, which is: Which algebraic expression represents the following phrase? 'The square of the sum of t and 6.' A. t^2 + 6 B. t + 6^2 C. (t + 6)^2 D. 2(t + 6) I do believe it is C, but I am not sure. -
## Math

The number of bonds an atom can form is represented by A pair of dots*** Unpaired dots Total number of dots One dot -
## Science

Which element is most stable? Chlorine Helium*** Silver Oxygen -
## spanish

change the verbs from the present tense to the present progressive Nosotros salimos de la escuela Answer: estamos saliendo -
## Math

A certain college had 5,000 applicants and 3/8 of thes applicants were female. The college admitted 40 percent of all applicants and an equal number of male and female applicants. What is the percentage of female applicants admitted to the college? What is -
## Math

(k + 1/k) ^2 =36 what is k^2 + (1/k)^2 34? -
## Math

There is a picture of a square - BCAD, and then there is a triangle EAD. B. E C A. D FIGURE NOT DRAWN TO SCALE In the figure above, the perimeter of the equilateral triangle AED IS 6. What is the area of the rectangle ABCD? A) 6 B) 4 C) 4 radical 3 D) 3 -
## Math

If x^2 - x - 6 = 0 and x^2 + 5x+6=0, what is the value of x? A) -3 B) -2 C) 2 D) 3 E) it can't be determined from the information given. I got B. By plugging in the answers. Is there an another way to solve this? -
## Math

Which ordered pair could be removed to make a function? {(1,3) (2,4) (3,4) (3,6) (5,10) (6,3)} A) (2,4) B) (3,4) C (1,3) D) (6,3) -
## Math

The planet Mercury is approximately 6 x 10^7 miles from the Sun. The distance between the Sun and Mars is approximately 2 x 10^8 miles. ABOUT how many times farther from the Sun is Mars than Mercury? 2 3 20 30 I got B? Can you please check? Thank you!! -
## Math

Due to the plate tectonics, the summit of Mount Everest moves about 4.5 X 10 ^-3 meter northeastwar in one year. About how many meters does the summit of Mount Everest move in 11 years? 4.09 x 10 ^-3 4.95 x 10 ^-3 4.09 x 10 ^-2 4.95 x 10 ^-2 Can you please -
## Math

A camper attaches a rope from the top of her tent, 4 feet above the ground, to give it more support. If the rope is 8 feet long, about how far will the stake need to be from the middle of her tent? -
## Geometry

8. The lateral area of a cone is 555πcm^2. The radius is 15.1 cm. What is the slant height to the nearest tenth of a centimeter? A. 36.8 cm B. 11.7 cm C. 83.8 cm*** D. 25.5 cm 10. What is the volume of the given prism? Round the answer to the nearest -
## Geometry

I have a few questions I am confused on. #4. Use formulas to find the lateral area and surface area of the given prism. Round your answer to the nearest whole number. The figure is not drawn to scale. A. 795 m^2; 809 m^2 B. 758 m^2; 849 m^2 C. 795 m^2; -
## Precal

solve for x 7^x/2=5^1-x what i have so far is: (x/2)ln7=(1-x)ln5 im not sure where to go from there -
## Algebra2

I am doing the Factoring Quadratic Expressions Quiz, has anyone done it? I am really stuck on it. -
## History

1.Which event took place soon before The United States annexed Texas. A Sam Houston became president B Texas became a u.s. territory C James Polk became president D Texas wrote a new constitution 2.Which of the following images would be the best symbol of -
## Chemistry

How many copper atoms are in a pure copper statue with a mass of 200 kg ? -
## biochemistry

) If the loss of each electron represents the liberation of 1.875 x 10-19 J, calculate the number of kJ and Cal (kcal), of fructose and oleate in a 1.00 g sample. (Significant digits count.) Fructose kJ = _____________ Cal = _____________ oleate kJ = -
## biochemistry

Calculate the total number of electrons that are lost in 1.00 g samples of fructose and oleate. (Note: the number of electrons lost per carbon atom is equivalent to its increase in oxidation state.) No. e- lost in 1.00 g fructose = _______________ No. e- -
## Math/calculus

Prove Sin 8theta -sin 10theta= cot 9theta (cos 10theta - cos 8 theta) -
## Math/calculus

Tan 165° Use appropriate identity and evaluate -
## Math/calculus

Cos^2x-sin^2x/sin^4x-cos^4x Simplify -
## Math helppp

Graph f (x) = 3cos (4pix -pi/2) -2 -
## Math/calculus

Graph f (x) = 3cos (4pix -pi/2) -2 -
## Math/calculus

Earth orbits the sun at an average distance of about 150 million kilometres every 365.2564 mean solar days, or one sidereal year. What is the linear velocity of th3 Earth in kilometres per hour? -
## Math/calculus

A small plane leaves Victoria airport and flies at a compass heading of 330°. If the plane cruises at 125km/he for 90mins, how far north and how far west will the plane gave flown -
## Math

2a+b=11 and 4a^2 +b^2=101, what is the value of ab? A 4 B5 C12 D6 E20 -
## Math

Erica has 8 squares of felt, each with area 16. For a certain craft project she cuts the largest circle possible from each square felt. What is the combined area of the excess felt left over after cutting out all the circles? A) 4(4-pi) B) 8(4-pi) C) -
## Math

The average of four possible numbers is 15. The second number is 2 times the first number. The third number is twice the second. What is the largest number? Would these be consecutive integers? And then you find the median?? -
## Math

While driving on a 500-mile trip, Mr. Smith averages 60 miles per hour for the first t hours. In terms of t, where t -
## Math

By 7:00P.M., 1/3 or the junior class has arrived at a school dance. By 8:09PM., 30 more juniors had arrived, raised attendance to 1/2 of the juniors class. How many people are in the juniors class? I don’t understand.. can someone help? A 30 B90 C120 -
## Math

Hi! I’m practicing for the SHSAT, and I am doing some math problems. I don’t want to take advantage of this website, so I decided to ask you guys first. Am I allowed to ask lots of math questions? But I will answer them(at least the ones I know) could -
## math

Write a 2-column proof for each of the following. Given: QR|| TU , S is the midpoint of QT Prove: /\QSR =~ /\TSU /\ Is the triangle sign -
## math

Given: measured angle D =~ measured angle F; GE bisects DEF prove: DG =~ FG -
## math

Write a 2-column proof for each of the following. Given: QR|| TU , S is the midpoint of QT Prove: /\QSR =~ /\TSU /\ Is the triangle sign -
## math

Write a 2-column proof for each of the following Given:RS=~ TS , V is the midpoint of RT Prove: /\RSV=~/\TSV /\ is the sign that looks like a triangle. -
## math

Name the congruent angles and sides for the pair of congruent triangles. ΔGKP=~ ΔLMN that is the "congruent" sign -
## Science

Which of the following distinguishes living things from nonliving things? A) Living things are made up of cells;nonliving things are not B) Living things are made up of atoms;nonliving things are not. C) Living things are made up of elements;nonliving -
## Science (PLEASE ANSWER SOON)

Most bacteria are: A) Unicellular eukaryotes B) Unicellular proaryotes C) Multicellular eukaryotes D) Multicellular proaryotes -
## Chemistry

Calculate the solubility of LaF3 in grams per liter in the following solutions. The Ksp of LaF3 is 2.01 e-19. 0.013 M KF Solution -
## Math

12,000 is compounded semiannually at a rate of % for 20 yrs -
## Math help

How does rationalizing the denominator use the form of 1? -
## Math helppp

The area of a playground is 64 square yards. The length of the playground is 4 times longer than its width. How can I solve this? -
## Advanced Algebra

The regular price of a chair is $895. If you purchase the chair at a 25% discount and then pay 6% sales tax, what is the final cost of the chair? I don't get how to set up this problem -
## Algebra

Jessie needs to rent a truck for two days to move her belongings to college. She can rent a U- Haul for $35 a day plus 25 cents per mile or she can rent a Budget Rental Truck for $25 per day plus 32 cents per mile. Write an equation and solve to find out -
## physics

Starting from the constant-acceleration kinematic equations, write a formula that gives xf in terms of t, xi, vf, and a. xf -
## math

how do I solve problems like this? 64x1 7/24 -
## chemistry

If Cl − is the only anion in the solution, what is the Cl − concentration in milliequivalents per liter? -
## Science

Describe the process of decomposition -
## Health

15. Strong social bonds and a good support system can block the negative effects of stress in your life. Which factor can be a poor choice for blocking the negative influences? (1 point) A.associating with peers who are drug free B.having friends who are -
## Physics

The left face of a biconvex lens has a radius of curvature of magnitude 12.8 cm, and the right face has a radius of curvature of magnitude 17.9 cm. The index of refraction of the glass is 1.45 a) Calculate the focal length of the lens for light incident