# Posts by Nicole

Total # Posts: 1,876

**Statistics **

Local food distributor claims that 18% of all food sold are vegetables. If 112 food items are sold are randomly selected, what is the probability that the proportion of vegetables sold differs from the population proportion by more than 2%? I am trying to plug in the formula ...

**chemistry**

How many grams of Al2(SO4)3 can be produced from 10.0g of CuSO4?

**Math**

2*14.8=29.6 36.4-29.6=6.8

**Math**

Mrs. Delvin owns a triangular plot of ground with two congruent sides each measuring 14.8m. If there are 36.4m of fencing around the plot, what is the length of the third side?

**Math**

The shoe box has a base with an area of 147.2 cm2. What equation can be used to find the volume of the shoe box? The length is 18.4 cm, the height is 11 cm and the width is 8 cm.

**Chemistry**

Based on the following equation: 2AgNO3 + CaCl2 > 2AgCl + Ca(NO3) When 50 g AgNO3 are combined with 1.45M CaCl2 solution, what volume of the 1.45M CaCl2 solution would be needed to precipitate all of the silver as AgCl?

**Chemistry**

How would I balance Al2 + I2>ALI3

**chemistry**

How do you rationalize an infrared spectrum of salicylic acid and aspirin? How do you know which is which?

**chemistry**

How do you rationalize an infrared spectrum of salicylic acid and aspirin? How do you know which is which?

**Pre-calculus**

An expedition walks 4 kilometers from camp on a bearing of 30 degrees, then turns and walks 10 km on a bearing of 160 degrees. Find the magnitude of the new location relative to the beginning location using vectors. -> if you can, can you possibly show how the triangle ...

**Physics**

A transverse wave is formed on a long skipping rope. The equation of the transverse wave is y=5.50 sin(0.031? x+5.52? t) where x and y are in centimeters, t is in seconds, and ? is pi (3.14..). Find the amplitude of the wave? what is the wavelength of the transverse wave? Find...

**Physics **

An ideal spring hangs vertically from the ceiling. When 1.0 kg mass hangs from the spring it is extended 5.0 cm from its relaxed length. A downward external force is now applied to the mass to extend the spring an additional 10 cm. While the spring is being extended by the ...

**Physics **

The horizontal surface on which the block slides is frictionless. The speed of the block before it touch the spring is 6.0 m/s. How fast is the block moving at the instant the spring has been compressed 0.15 m? The spring constant, k = 2000 N/m

**biology lab**

26.2g of sodium chloride(NaCL) are dissolved in enough water to make 100mL of solution. What is the molarity of this solution?

**biology lab **

how many grams of mercury II Nitrate will you need to prepare 500mL of a .60 M solution ?

**Algebra**

Thanks for your help

**Algebra**

Not sure how to do this problem need a little help at least to start. If h(x) = 1/(x+3)^3 then determine f(x) and g(x) such that h(x) = (f of g)(x).

**Algebra **

A gigabyte memory is ___ or ___ times larger than a kilobyte. I know that a gig (G) is 10^(9) & kilo (k) is 10^(3)

**Scienc**

2. A 2,500 kg car moves at 15 m/s2; 15 m/s2 is the _________ of the car A. Acceleration B. Force C. Velocity D. Speed** 3. Two people are pushing a couch from opposite sides. One person is pushing to the right with a force of 3 N. The other person is pushing to the left with a...

**science**

water evaporating into the air and turning cold, also known as Condensation

**Chemistry**

Express the absolute value of the partial charges as a decimal fraction of the elementary charge for CH. The bond length, is 131.1 pm, and the Dipole Moment, D is 1.46

**Chemistry**

I forgot to mention that OH - Bond length, pm is 98.0 and Dipole Moment, D is 1.66

**Chemistry**

Express the absolute value of the partial charges as a decimal fraction of the elementary charge for OH.

**Chemistry**

When heated, KClO3 decomposes into KCl and O2. If this reaction produced 79.9 g of KCl, how much O2 was produced (in grams)?

**Biology**

how many grams of sucrose would I need to make 350mL of an 18% solution?

** College calculus **

Find the dy/dx A. y = u sqrt u + 1; u = 2x^2 - 2/3 B. x = u/ (1 + u^3); y = u^2 /(1 + u^3) Can someone help me

**math**

What is the loop that forms after many iterations when the initial value of g is 1.7? What is the loop that forms after many iterations when the initial value of g is 1.72?

**Chemistry**

DrBob222 thank you so much! you don't know how much I was struggling. The information is enough for me :)

**Chemistry**

Sorry... I don't know what information to provide you... I thought the problem was just asking "what must one need to do in order to carry out the titration although the endpoint reaches a volume more than the 10-mL graduated cylinder can hold." I have data with ...

**Chemistry**

Describe the procedure you would follow to determine the concentration of vitamin c in a sample if the volume of dcpip required to reach the end point were more than the 10-mL graduated cylinder could hold. The titration must still be carried out in the 10-mL graduated ...

**Statistics Math**

Let A and B be two exclusive events with P(A)=.2 and P(B) =.3. Find P(A|B)

**Geargia State History (Social Studies)**

ouch... I thought you were supposed to help not hurt. I've read my text alo0t and I can't find the answers, but whatever ill just fail. doesn't bother me.

**Geargia State History (Social Studies)**

my answers IDK if their right but here they are: 2. A 5. False 7. B 9. C

**Geargia State History (Social Studies)**

2. Officials whose jobs are not provided for in the constitution but are required by law are known as __________. A. Constitutional Officers B Secretaries Of State C. Deputies D. Statutory Officials 5. True False: The state supreme court is an appellate court. A. True B. False...

**Math**

the answer is 20/100 or 1/5

**math**

translate this sentence 44is the difference of Rita's age and 12 in an equation .

**science**

if there was a source of pollution in Smithtown bay, what role could a physical oceanographer play in understanding the impacts to other parts of long island sound?

**Math general**

If you have to cut 102 ft of rope into 18 inches, how many pieces would you have?

**Vet tech**

. Academic Index is:

**Math**

Evaluate 3a^2-2ab+10 A=-2 B=3

**Chemistry**

I need to find the pH of a 500 mL solution of pure water after adding 33.0 mg of H2SO4 and 18.0 mg of HCl. Please help! So far I have tried to find the moles of 33.0mg of H2SO4 and got 3.24. Then I calculated pH by multiplying the subscript of H (2) by the moles (3.24) and ...

**Chemistry**

?????????

**Chemistry**

the solubility of aspartic acid in water is .500 g in 100 mL at 25 degrees C. If .251 g of aspartic acid is dissolved in 50. mL of water at 50 degrees C and let solution cool to 25 degrees C. is the solution supersaturated, saturated, or unsaturated. the solution was not ...

**Math**

I need help with proofs in geometry.

**Chemistry**

The equation is N2 + O2 reacts 2NO Given 12.5 mg of oxygen reacts with 21.4 mg of Nitrogen what mass of product is formed

**Math**

-.1091

**Math**

No, Ms. Sue, but thank you!

**Math**

A car was valued at 30k in 1994, it depreciated to 15k by 2000. What was the annual rate of change between 94 and 2000?

**accounting**

please

**accounting**

$16,550

**accounting**

Determine the ending balance of the Merchandise Inventory account given the following transactions: TooDaLoo had a beginning balance of $8,500 in its Merchandise Inventory account. They purchased $45,000 worth of inventory on account from WeeParcel under the credit terms 2/10...

**Math**

A TV that usually sells for $172.36 is on sale for 25% off. If sales tax on the TV is 9%, what is the price of the TV, including tax?

**Math**

Thx!

**Math**

If the legs of a right triangle have lengths of 6 inches and 8 inches, what is the length of the hypotenuse in inches? A.11 B.13 C.10 D.16 Is the answer C?

**Language Arts**

1. Which of the following sentences uses the past perfect verb tense. A) By June, I will have owned the camera shop for a decade. B) After it was sold, I had owned the camera shop for 12 year as C) I cannot recall a time when I have not owned some kind of shop. D) I owned that...

**ipc**

A 95.00 kg man on ice skates catches a ball moving at 18 m/s. The man is initially at rest. The man and the ball move together after the collision. The ball's mass is 0.14 kg. What is the final velocity

**Physics**

A girl jumps off a platform with a horizontal velocity of 2.06 m/s and lands in the water 1.3 s later. Gravity is 9.8m/s^2. How high is the platform.

**Algebra**

josh receives a weekly paycheck from his job. at the end of the week he has $52 remaining. throughout the week he spent a third of his paycheck at the mall and $8 for a new calculator. what the amount of his paycheck?

**math**

find the next three terms in 18,27,36,45

**Physics**

Initially (at time t = 0) a particle is moving vertically at 7.2 m/s and horizontally at 0 m/s. Its horizontal acceleration is 1.3 m/s 2 . At what time will the particle be traveling at 59◦ with respect to the horizontal? The acceleration due to gravity is 9.8 m/s 2 . ...

**Math**

Farmer has a field 1 square mile wide and 1 square mile wide. He divides it into fields 1/3 mile wide and 1/3 mile long how many fields will he have

**Algebra II**

y varies directly as x. if y=-5/8 when x=3/2, find x when y=2/5

**Math**

X=2

**Chemistry**

What am I missing ? Should there be another step?

**Chemistry**

yes 0.2512 M stock so, 0.1410m x 0.01677L= 2.36457^-03 mole used. mols HCL = mols NaOH 0.2512M=2.36457^3

**Chemistry**

A 0.2512 stock sample of HCl is tirade to equivalence . If 16.77ml of 0.1410 M NaOH is required to reach the equivalence point, what volume of stock HCl was used for the tritation?

**Chemistry**

How many potassium ions are present in the following: 1) 3 moles of potassium chloride.

**Math**

The number of eggs Meg collected over the week were: Monday=8 eggs, Tuesday =5 eggs, Wednesday=6 eggs , Thursday=7 eggs, Friday=6 eggs, Saturday=5 eggs. By Sunday the weeks average was 6 eggs per day. How many eggs were collected on Sunday?

**Calculus rate of change**

Can you please check my answers and fix the ones if any that are wrong. Along with help on part d Consider the following fun f(x)=(3/4)x^3- x^3-3x^2+6x A.find relative extrema and identify max and min. I got x=1 max ,±√2 min B.determine the interval(s) where f(x) ...

**Calculus rate of change**

A machine starts dumping sand at the rate of 20 m3/min, forming a pile in the shape of a cone. The height of the pile is always twice the length of the base diameter. After 5 minutes, how fast is the base area of the base increasing? I honestly have no idea how to start this ...

**math**

please help me solve this problem quickly! John and Melanie are designing a science experiment for the school science fair. Their experiment requires a large amount of copper wire. They need 22 spools of copper wire that each contains 31 meters of wire. How many kilometer of ...

**math**

PLS... help me Give the least number that can be rounded to the nearest ten thousands

**Grammar**

THE 2ND ONE

**History**

Which best describes the role of Zionism in ongoing Middle East tensions? It led to disagreements between Arabs and Jews over control of Holy Land. <my choice It created and Independent Palestinian state opposed to Jewish people. It launched a war between moderate Arab ...

**Math**

Find the solution to each equation. 2^x=17 4log4^(x)=7

**Science**

The answer is A.

**Global Communication**

Great, thank you!

**Global Communication**

Is local culture an enabler or a hindrance in planning and executing a strategic communication campaign?

**Global Communication**

Thanks!

**math**

-6t+3(t-2)+5t=8

**Math**

Name things that are false about prime numbers

**Chemistry**

For the reaction 2 NO (g) + Cl2 (g) → 2 NOCl (g) If the concentration of NO is tripled, the rate of the reaction increases by a factor of nine. If the concentration of Cl2 is cut in half, the rate of the reaction is decreased to half the original rate. Find the order of ...

**algebra**

The size of the coyote population at a national park increases at the rate of 4.6% per year. If the size of the current population is 130, find how many coyotes there should be in 6 years. Use the function f(x)=130e^0.046t

**Math**

The Christmas Day parade in Manhattan, New York started on 145th St. The people walked north on this road for 4 miles. Then they turned on 34th street and walked for three more miles. 34th street has a bearing of N46°E. How far is the parade from their starting point on ...

**Math**

A jet took of at a rate of 310 ft per second and climbed in a straight path for 2.4 minutes. What was the angle of elevation of its path of its final altitude was 13,000 ft? Don't know what to convert 2.4 mins to. I got sin of the angle of elevation = 13,000/ ?

**Math**

An airplane flying at 390 mph has a bearing of N 28°W. After flying 3 hours, how far north and how far west has the plane traveled from its point of departure?

**Math**

A plane flies 430 miles at a bearing of S27°E, then turns and flies N63°E for 135 miles. Find the distance and the bearing from the starting?

**Math**

Jake is on the Appalachian Trial hiking. He hikes 8 miles due north and then turns and hikes an additional 10 miles at a bearing of N 67°W at which point he has reached a vista, eats lunch, and decides to bushwhack directly back to the trailhead. How far is he now from the...

**Math**

Jake is on the Appalachian Trial hiking. He hikes 8 miles due north and then turns and hikes an additional 10 miles at a bearing of N 67°W at which point he has reached a vista, eats lunch, and decides to bushwhack directly back to the trailhead. How far is he now from the...

**Math**

A plane flies 430 miles at a bearing of N27°E, then turns and flies N63°E for 135 miles. Find the distance and the bearing from the starting point to the ending point ? I found distance to be 450.69 mi by using A^2+B^2=C^2 because it is a right triangle. I am confused ...

**Chemistry**

Potassium oxide reacts with water to produce of potassium hydroxide. Please provide a balanced equation, and determine how much potassium oxide is needed to produce 80.5g of potassium hydroxide?

**Math**

A bucket holds 0.25 gallons of water. The water is poured into 20 equal-sized containers and there are 12 ounces left. How much does each of the smaller containers hold? (There are 128 ounces in a gallon.)

**math**

Determine the range of 𝑦 = −5cos(𝑥 + 𝜋 6)−3

**math**

Solve for x: 𝑦 = 2sin−1(𝑥 −5)

**math**

Write an equation for a cosecant function with a period of 3𝜋 and a range of (−‡,−2]¾[2,‡)

**Calculus**

960

**Math**

You can put the numbers 1 to 10 on flashcards and show her like for the number 6 put 6 things she likes then do the rest of the numbers. And maybe she knows them give her a litte surprise like a reward her favorite thinGS, candy, toys, and etc

**math**

Two circles of radii 9cm and 13cm have their centres 15cm apart. Find the angle between the radii joining the centres to the points of intersection of the circles. Hence find the overlapping area between the two circles. - (Been struggling with this question, any help would be...

**Statistics**

Suppose a baseball pitcher throws fastballs 80 % of the time and curveballs 20 % of the time. Suppose a batter hits a home run on 8 % of all fastball pitches, and on 5 % of all curveball pitches. What is the probability that this batter will hit a home run on this pitcher'...

**english**

Which sentence contains the correct form of the possessive pronoun?