# Sandra

Newest questions posted by Sandra-
## Science

Are there instances when the scientific method is used without the possibility of conducting experiments? -
## Chemistry lab

A solution contains 2.65g of anhydrous Na2O3 in 200cm³ of the solution. Calculate the concentration of the solution in g/dm³ given that (Na2CO3 = 106) -
## Chemistry lab

List 10 equipment use in the chemistry lab and their uses -
## Math

Design a simulation to determine the probability of having exactly 2 boys and a family of five children -
## Math

Two out of every 7 7th grade students are in the chorus. Estimate the probability of randomly selecting 3 7th grade students and having at least one student be in the chorus. Which of the following tools could be used to simulate this situation? A bag of -
## Math

Using algebraic expression no arithmetic symbols. Twice the quotient of a number divided by 5. -
## Alegebra

To help raise funding for homeless’ Thanksgiving Dinner, Christina and her friends sell chocolate bars during lunch time. They sold 2/5 of the total on day one, and sold 1/2 of the leftover on day two. On day three, they sold 1/3 less than sales on day -
## physics

A bullet of mass 6.00 g is fired horizontally into a wooden block of mass 1.21 kg resting on a horizontal surface. The coefficient of kinetic friction between block and surface is 0.210. The bullet remains embedded in the block, which is observed to slide -
## Math

Dave takes out a 24-year mortgage of 290000 dollars for his new house. Dave gets an interest rate of 14.4 percent compounded monthly. He agrees to make equal monthly payments, the first coming in one month. After making the 68th payment, Dave wants to buy -
## english 4

what's the difference between beowulf and the narrator -
## Algebra

One-third a number (x)added to one-half the number equals twelve less than the number -
## math

A chemist wants to mix two kinds of glycerins for the manufacture of a soap. The glycerin from supplier A cost $1 million per ton and the glycerin from supplier B costs $1.5 million per ton. The chemist is obligated to buy no more than twice as much -
## science

where father seat in seesaw.tomake balance -
## math

17. Lavina wants to buy a rocking chair for $160. She'll pay 10% down and pay the rest in six monthly installments. What will be the amount of each monthly payment? A. $27 B. $24 C. $26 D. $16 -
## Social studies

A small, but wealthy and powerful,church community is seeking to buy the only television station in a 200 mile radius. Based on the point of view presented,what is the best argument against this sale? 1) tax money should not be used to support the church -
## M240 Help please

Solve the following system of equations using matrices. Use Gaussian elimination with back substitution or Gauss-Jordan elimination. a. 3x1 + 5x2 - 8x3 + 5x4 = -8 b. x1 + 2x2 - 3x3 + x4 = -7 c. 2x1 + 3x2 - 7x3 + 3x4 = -11 d. 4x1 + 8x2 - 10x3+ 7x4 = -10 my -
## MA240 Please help

An artifact originally had 16 grams of carbon-14 present. The decay model A = 16e -0.000121t describes the amount of carbon-14 present after t years. How many grams of carbon-14 will be present in 5715 years? A. Approximately 7 grams B. Approximately 8 -
## m240

Determine the degree and the leading coefficient of the polynomial function f(x) = -2x3 (x - 1)(x + 5). A. 5; -2 B. 7; -4 C. 2; -5 D. 1; -9 My answer is A is this correct. -
## m240

All rational functions can be expressed as f(x) = p(x)/q(x), where p and q are __________ functions and q(x) ≠ 0. A. horizontal asymptotes B. polynomial C. vertical asymptotes D. slant asymptotes My answer is B is this correct. -
## Writing

While conducting these difficult tests, the state driving inspectors often seemed stern and unyielding. Which of the following is the best way to write this sentence? 1) tests, the state driving inspectors 2) tests the state driving inspectors 3) tests. -
## Writing

With time and public support, they should be successful. What correction should be made to this sentence? 1) change the spelling of support to suport 2) replace they with one 3) change should be to should have been 4) change the spelling of successful to -
## writing

We also prepared for the test by studying the driver's booklet, memorizing rules, and to learn road signs. What correction should be made to this sentence? 1) change prepared to prepare 2) change studying to study 3) change driver's to driver 4) remove the -
## Writing

With time and public support, they should be successful. What correction should be made to this sentence? 1) change the spelling of support to suport 2) replace they with one 3) change should be to should have been 4) change the spelling of successful to -
## writing

In the past, the United Stated Public Health Service and state and local health departments dominate the fields. What correction should be made to this sentence? 1) insert comma after Service 2) change state and local to State and Local 3) insert comma -
## writing

What else can they do when repaired walls separate from beams or restoring sockets carry no electricity What correction should be made to this sentence? 1) Insert a comma after walls 2) change the spelling of separate to seperate 3) Change restoring to -
## Writiing Skills

As a result, although the swimming or boating may be great, you will have to get up at daybreak to beat the crowds. If rewrote the sentence As a result, although the swimming or boating may be great, the next word should be a) since b) but c) and d) if e) -
## math

if one sixth of a number is added to one eighth of the same number, the result is 35. find the number? -
## Math

Brandy has a card collection with 64 basketball cards 32 football cards and 20 for baseball cards he wants to arrange the cards and equal piles with only one type of card in each pile how many cards can he put in each pile? -
## Math

Simplify the follow)ing to the simplest form (tan(x) +cot(x))/ (tan(x)*cot(x)) -
## Math

(1+tan(x))* (1+cot(-x)) -
## Math

Solve the Identity cot (x)/ (csc(x)-1)= (csc(x)+1)/cot (x) -
## maths

If an event A.implies obtaining prime number of an event B.implies obtaining an odd number in a single throw of a dice. Find the probability of event A or B. -
## math

if 13 times a number x is added to twice its square.the result is 84.find x -
## Math help please??!

Which answer describes the transformation of g(x)=log4(x−2)+4 from the parent function f(x)=log4x? It is the graph of f(x) shifted 2 units right and 4 units up. It is the graph of f(x) shifted 2 units left and 4 units down. It is the graph of f(x) -
## Politics

Two examples of how accountability is ensured in U.S. Bureaucratic Agencies. What does it mean by accountability -
## american government

true or false: the most important source of political values in the united states is probably the family -
## Math

The women's world record for the fastest half marathon is one hour six minutes and 25 seconds how much faster is this then the women's world record for the fastest marathon from exercise 4 -
## algebra 1

Which type of function is represented by the table of values below? x y 1 4 2 16 3 64 4 256 5 1,024 -
## Physical science

A piece of metal has a mass 85 cg and a volume of 450L. What is the density g/cm cubed? What would be the mass of 300 cm cubed of this metal? What would be the volume of 200 ounces of this metal? -
## math

a small kite starts at 7 meters off the ground and rises at 2.5 meters per second. a large kite starts at 12 meters off the ground and rises at 1.5 meters per second. when are the kites at the same height? -
## Language Arts Help

The aunt SUPPRESSED a gasp of admiration. What is the principal part of SUPPRESSED? -present -present participle -past ** -past participle -
## physics

A remote controlled car. My 11 year old grandson, Danny, got a remote controlled car for his birthday. His older brother, Jay, has a set of physics tools, including a sonic ranger. Jay is a computer jockey and has figured out how to make the sonic ranger -
## finance management

You are going to open a business making custom cabinets. You can sell each cabinet for $80. It takes a cabinetmaker approximately 45 minutes to make one cabinet. Each cabinetmaker works an 8-hour day earning $18 per hour. Each cabinet uses $25 in raw -
## finance management

Wanda wants to open a health-food store. Her monthly expenses are rent $3,500, utilities of $1,000, insurance of $500, and payroll of $4,250. She estimates that her cost of goods is approximately 65 percent of sales. Wanda would like to make $4,000 a month -
## Calculus AB

If csc x = -2.5, what is the value of x? -
## Math Makes Sense Grade 3

Colour the spinner red and blue. Make it so that when the pointer is spun, the probability of landing on blue is 1 in 4. What is the probability of landing on red? -
## Math Makes Sense Grade 3

Make a spinner with 3 colours. I chose green, red and blue. Colour it so that when the pointer is spun, the probability of landing on the green is 2 in 4. What is the probability of landing on either of the other 2 colours. -
## Financial Math

6 character computer password is made up of 4 numbers followed by 2 letters. How many different passwords are possible? -
## physics

Find the number of moles in 2.00 L of gas at 35.0°C and under 7.41×107 N/m2 of pressure. Select one: a. 0.051 moles b. 51 ×105 moles c. 58 moles d. 5.8 moles -
## Calculus

A searchlight revolving once each minute is located at a distance of 1/4 mile from a straight beach. How fast is the light moving along the beach when the beam makes an angle of 60° with the shore line? -
## Calculus

A building is to be braced by means of a beam which must pass over a wall. If the wall is 3 3/8 feet high and stands 8 feet from the building, find the shortest beam that can be used. -
## Math

7 boys share 5 chocolate bars equally how much do the get? -
## Calculus

Find the area of the largest rectangle cut from the first quadrant by a line tangent to the curve y=e^(-x^2) -
## st josephs

for the next 4 years you will get the following cash flow. $420 $520 $750 $540. Assume that the interest is 5.5% how much money will you have in 4 years -
## Calculus

A light hangs 15 ft. directly above a straight walk on which a man 6 ft. tall is walking. How fast is the end of the man's shadow travelling when he is walking away from the light at a rate of 3 miles per hour? -
## Calculus

One ship is sailing south at a rate of 5 knots, and another is sailing east at a rate of 10 knots. At 2 P.M. the second ship was at the place occupied by the first ship one hour before. At what time does the distance between the ships not changing? -
## Calculus

Find the area of the largest rectangle having one side on the x-axis and inscribed in a triangle formed by the lines y=x, y=0 and 3x+y=20. -
## Calculus

Find the dimensions of the largest right circular cylinder that can be inscribed in a sphere of radius 6 inches. -
## math

If a short quiz consist of 10 True False questions, then how many different ways are there to answer the 10 questions? Assume each question is randomly answered. -
## Algebra 2

Parabolas - you are my last resort: Find a quadratic function in standard form for each set of points. (0, –4), (1, 0), (2, 2) Can't print answer choices -
## physics

A charged capacitor (AB) carries on its plate A a charge Q=-1.2mC a) What is the charge carried by plate B. b) Is the voltage U (AB)=V (A)-V (B) positive or negative. c) The plates A and B are connected to the terminals of a resistance R: the capacitor -
## physics

A charged capacitor AB carries on its plate A a charge Q=-1.2mC What is the charge carried by plate B. Is the voltage U(AB)=V(A)-V(B) positive or negative, The plates A and B are connected to the terminals of a resistance R: the capacitor gets discharged. -
## physics

A capacitor is formed of two identical coaxial disks of diameter 28cm. The distance d between the disks is adjustable . Calculate the capacitance of this capacitor at d=5mm. What becomes the value of this capacitance if a glass sheet 5mm thick is inserted -
## USA TEST PREP

I pull out all the stops and start my thorough speculation. In line 8, which literary device does the author use to create a musical quality? a) allusion B) free verse C) alliteration D) onomatopoeia -
## Algebra 2

What is the equation of the function y = (3/x) translated 4 units to the right and 5 units down? -
## Business law

State the issue, the law, an analysis and conclusion for the following case:- Mr Mehra was the managing director of Oakprime Ltd, the beneficiary under a letter of credit which had been issued by Trinidad National Bank (TNB) and confirmed by Standard -
## Algebra 2

Simplify the sum. (w2 + 2w – 24 + ) / (w2 + w – 30) (All the other help I can find they add +8w and -5w) please help. -
## math

Susie wants to make some hot cereal for breakfast.The directions say to use 3 cups of water with 1 cup of cereal to make 4 servings.Susie only wants 1 serving.How much cereal should she use? -
## Algebra 2

Designer Dolls, Inc. found that the number N of dolls sold varies directly with their advertising budget A and inversely with the price P of each doll. The company sold 1,800 dolls when $34,000.00 was spent on advertising, and the price of a doll was set -
## Algebra 2

How do I express a number like 27 ^2/3 as a rational number in its simplest form? 31 25.6 123 16 I keep getting 83/3 and that = 27.66 -
## accounting

Harris Fabrics computes its predetermined overhead rate annually on the basis of direct labor-hours. At the beginning of the year, it estimated that 20,000 direct labor-hours would be required for the period? estimated level of production. The company also -
## Alg 2 function operations

Let f(x) = -5x -4 and g(x) = 6x -7. Find f (x) + g(x) –11x + 3 x + 3 –11x – 11 x – 11 -
## Health, safety, and nutrition

All of the following help teachers to create an environment that enhances and supports the natural rhythms of eating EXCEPT: -
## Algebra 2

What is the solution of the equation? Sqrt x + 10^-9 = -7 –6 4 14 –8 You are my last hope to getting this. -
## english

I don't understand what the question is asking. Can someone help me understand. What can you take greater responsibility for as a student, and if you were to do so, what outcome(s) might you create? -
## nutrition,health,and safety for young children

what should early childhood teachers do when children are interested in exploring frightening topics -
## Algebra 2

How is the expression log 32 - log 8 written as a single logarithm? log 4 log 8 log 24 log 40 -
## English

Which of the following sentences is written in the passive voice? -Charlie ran down the street. -The delicious bread is baked by Mr. Jillin.<<<<<? -The plane will fly at five o’clock. -Kristin played with her dolls. -
## nutrition,health, and safety for young children

Eighty-nine percent of illnesses among children in child care settings are attributed to which of the following -
## Nutrition,Health,and Safety for Young children

Which of the following statements is true about modes of transmission for infectious agents -
## Algebra 2

Which of the following binomials is a factor of x^3+4x^2+x-6 x-2 x+2 x-4 x+4 -
## Algebra 2

Solve the system by substitution 2x + y = -11, 3x – 4y = 11 (3, 5) (–5, –3) (–3, –5) (5, 3) -
## Health, Safety, and Nutrition

Which of the following statement is true about modes of transmission for infectious agents? -
## Reading/Writing

I really need help asap with my subjective letter for my NJHS Application. Please answer fast- it is due tomorrow!! --- To the National Juniors Honor Society: I express my gratitude for selecting me, Sandra Garcia, as a possible member of the National -
## mathematics

If an amount of money A results in investing a sum P at a simple interest rate of 7% for 10 years, then A = 1.7P. Graph this equation for ordered pairs (P,A). -
## Math

The angles of elevation of the highest point of a building from two points S and T are 60 degree and 30 degree respectively,T is vertically above S and ST=10m.Calculate the height of the building above the level of S -
## math

My thousandths digit is twice the tenths digit. My tenths digit is one less than the hundredths digit. If my hundredths digit is 5, what's my number? January 5, 2016 by Sandra -
## math

six more than the product of three and five -
## MATH-Algebra 3

The Hernandez family left for a vacation at 8 a.m. By noon they were 208 miles away from home and the family stopped to get lunch. Calculate the average rate of change. I don't know what the rate of change is... I mean, I got that they were traveling at -
## Algebra 2

Use synthetic division to find P(3) for P(x) = x4 – 6x3 – 4x2 – 6x – 2 3 –137 299 –47 -
## Chemistry

34.09 ml of 0.251 M KOH is required to tritate a 10.2951 g sample of acetic acid solution. The density of the solution had been previously found to be 1.007g/ml. what is the molarity of the aetic acid solution?. -
## Algebra 2

What are the zeroes of y = x2 + 2x – 8? –4, 2 4, –2 –4, –2 4, 2 -
## Algebra 2

Simplify the expression. -6 + i / -5 + i -
## Finite Math

If the apartment is hot and the air conditioner is worker, then the temperature is 90% -
## Algebra 2

Simplify the number using the imaginary unit i. (sqrt)of -28 •2(sqrt)-7 •-2 (sqrt)-7 •i (sqrt)28 •2i (sqrt)7 -
## Algebra 2

Jack is selling wristbands and headbands to earn money for camp. He earns $2 for each wristband and $3 for each headband. He wants to earn at least $50. He needs to sell at least 5 wristbands. Which system of inequalities is shown in the graph of the -
## Astronomy

Why is the greenhouse effect on Earth not as drastic as on Venus? -There is no carbon dioxide in Earth’s atmosphere. -The oceans dissolved much of the carbon dioxide. -Earth is smaller than Venus so it can’t hold the gases in the atmosphere. -There is -
## Astronomy

Why is the greenhouse effect on Earth not as drastic as on Venus? There is no carbon dioxide in Earth’s atmosphere. The oceans dissolved much of the carbon dioxide. Earth is smaller than Venus so it can’t hold the gases in the atmosphere. There is more -
## Algebra

I am not getting any of the posted answers: Solve the system using elimination. 2x + 6y = -12 and 5x – 5y =10 (2, 1) (0, –2) (–2, 0) (1, 2) -
## Algebra 2

Solve the system by substitution. 2x + y = -11 3x - 4y = 11 (3, 5) (–5, –3) (–3, –5) (5, 3) How?