# Posts by PAULA

Total # Posts: 328

**bearing**

A ship is due east of a harbour. Another ship is also 3km from the harbour but on a bearing 042 degrees from it a. Find the distance between the two ships b. Find the bearing of the second ship from the first ship

**Math**

A man has three times as many quarters as half-dollars, four times as many dimes as quarters, and two more nickels than dimes. If he has $9.25, how many of each coin has he?

**Maths**

C=60 A=80 B=130 Total of A+B+C 270cm Length of B = 130

**Math**

Directions are "Order these integer decimals from least to greatest: +.125, -.1428, -0.025 (with a repeating 5), 0.2. I'm thinking that ordering from least to greatest would be: -.1428, -0.025, .125, 0.20

**Math**

The first question is show how to make one addend the next tens numbers. Complete the new addition sentence: 15 + 37= I need a break down to how to to figure this out. Please.. I have no clue what to do.

**Math**

is the final answer $7,213.96?

**Math**

Belinda borrowed $20,500 at simple interest rate of 4.30% p.a. from her parents to start a business. At the end of 3 months, she paid them $7,100 and $6,900 at the end of 8 months. How much would she have to pay them at the end of 18 months to clear the balance?

**Equivalent Payments**

Belinda borrowed $20,500 at simple interest rate of 4.30% p.a. from her parents to start a business. At the end of 3 months, she paid them $7,100 and $6,900 at the end of 8 months. How much would she have to pay them at the end of 18 months to clear the balance?

**COM425**

Abdoulaye tells his teammate Rick that he prefers to be called “Abdoulaye”; yet Rick continues to call him “Abdou.” This is a violation of __________ rules. 1) communication 2) relational 3) interpersonal 4) corporate (I think its relational, not sure though)

**Com 425**

I think it is "Let's agree to not discuss old issues today." Metacommunication is the process of communicating about the manner in which group members communicate.

**Com 425**

Which of the following statements is an example of metacommunication? 1) "Lets introduce ourselves one at a time." 2) Don't call me names!" 3) I think we should take this vote to the Board." 4) Let's agree to not discuss old issues today."

**Math**

the answer is 1/2,600

**math**

Write ( 1 9 ) 3 as a product of the same factor. Then find the value

**Physics**

A steel ball of mass 8.0 kg and traveling at 3.0 m/s [E] has a head-on elastic collision with a brass ball which is at rest. After the collision, the velocity of the brass ball is 4.0 m/s [E]. Find: a)the velocity of the steel ball after the collision b) the mass of the brass ...

**Geography**

A bolt of cloth containing 25yd 6in. Was cut into 6 pieces. How long was each piece?

**finance**

Given an interest rate of 7.2 percent per year, what is the value at Year 9 of a perpetual stream of $3,950 payments that begin at Year 19

**Chemistry**

Hey Dilcia!!! turns out im in the same online chemistry class as you and I think i figured out this problem. So we know our equation is: CS2 + 3Cl2 ==> CCl4 + S2Cl2 We set up the problem 16 kg CCl4 | 1 mol CCl4 | 1 mol CS2 | 0.076 kg CS2 | | 0.15 kg CCI4 | 1 mol CCl4 | 1 ...

**Integral calculus**

The length of each leg of an isosceles right triangle is increase at the rate of 2 mm/s. How fast is the hypotenuse increasing at the moment when each leg is 10 mm?

**chemistry**

a thermometer containing 9.5g of mercury has broken. If Mercury has a density of 13.6g/ml what volume spilled

**science**

A dog does 12'500 I of work when he pulls a wagon that weighs 250 N. How far did the dog pull the wagon

**chemistry help**

What mass of ammonium chloride must be added to a 0.500 L solution of 0.250 M ammonia to make a buffer with a pH of 9.26? Kb (NH3) = 1.8 × 10–5?

**chemistry**

What is the total change in entropy when 10.0 g of ice melts at 25.0°C? DHfus = 6.01 kJ/mol The answer is 1.03 J/K but idk how to find it.

**chemistry**

Hydroxyapatite is the main mineral component of bone. How many grams of hydroxyapatite will dissolve in 1.00 L of H2O? Ksp = 2.34 × 10–59; Molar mass = 502.3 g/mol? I keep getting 5.83x10^-18 g but the answer is supposed to be 4.35x10^-5 g. I don't understand why

**Chemistry**

You would use m1v1=m2v2 so (25 mL)(0.1 M) = ( x mL)(0.025 M). You would solve for x mL

**chemistry**

Would I use the Henderson-hasselbalch equation? And what would I do after that?

**chemistry**

What mass of ammonium chloride must be added to a 0.500 L solution of 0.250 M ammonia to make a buffer with a pH of 9.26? Kb (NH3) = 1.8 × 10–5?

**chemistry**

What is the total change in entropy when 10.0 g of ice melts at 25.0°C? DHfus = 6.01 kJ/mol The answer is 1.03 J/K but idk how to find it.

**chemistry**

Calculate the pH of a buffer which contains 0.0500 M pyruvic acid and 0.0450 M sodium pyruvate. (The Ka of pyruvic acid is 4.1 × 10–3)

**Medical billing and Coding**

What is defined as improper behavior or billing practices that result in financial gain? I have looked all through the text and cannot find the answer.

**calculus**

Find the intervals on the x-axis on which the function f(x) is increasing and those which it is decreasing, where f(x) = (x)/(x^2+1) I differentiated and got f'(x)=(x^2+1) -(x)(2x) all over (x^2+1)^2 But I don't know what to do now...

**chemistry help**

0.0025?

**chemistry help**

If the standard calcium carbonate solution is 100 ppm and 25 mL of solution is used for the standardization, calculate the approximate volume of 2mM EDTA solution needed to reach the end point of the titration. I know to use M1V1=M2V2 but need help converting units of ...

**chemistry**

If a solution of lead iodide has [I-] = 1.1x10-4 M, what is the lead(II)ion concentration at equilibrium?

**calculus**

differentiate y = 2^3x^2 read as two to the 3x squared power

**chemistry**

Suppose that the reaction of Fe3+ and SCN- produces Fe(SCN)2 (+). 5.00mL of 2.0mM Fe3+ is mixed with 5.00 mL of 2.0mM SCN-. The student finds the equilibrium concentrations of Fe(SCN)2(+) to be 0.3mM. 1.) What is the initial number of moles of each species present? 2.) What is...

**Math 110**

(a) g(x)=cos(x/(￼￼x^2 +9)) (b) f(x)=x^(5/3) −x^(2/3)

**Math 110**

Find intervals of increase/decrease and classify all critical points of (a)g(x)=cos(x/(￼￼x2 +9)) (b) f(x)=x5/3 −x2/3

**Math**

Let f(x) = 2x + 1 − sin(x), how many roots does f(x) have in the interval [−π, π]? Use the next steps to prove that it has only one root. a) Use the Intermediate Value Theorem to show that f(x) has at least one root. (b) Explain why f(x) is increasing on ...

**calculus**

Find the value of the limit. lim ã(x+4) - 2 divided by x x->0 The 2 is outside of the square root. The answer is supposed to be 1/4 but I keep getting 0/0 no matter how many times I redo the algebra.

**physics**

A skier of mass 74.6 kg is pulled up a slope by a motor-driven cable. How much work is required to pull the skier 63.3 m up a 39.0◦ slope (assumed to be frictionless) at a constant speed of 2.0 m/s? The acceleration of gravity is 9.81 m/s 2 . Answer in units of J

**chemistry help**

What are the differences in measuring the molar mass using freezing point depression between studying ionic solids and molecular solids?

**chemistry**

A sample of 10.00g of a solid unknown was dissolved in 25.00g of water. Assuming that pure water freezes at 0.0°C and the solution freezes at -5.58°C, what is the molal concentration of the solution? What is the molar mass of the solid? Show your calculation. I got ...

**Spanish 3 Homework**

Oh, I'm sorry! I forgot to mention that in my previous posts; we're learning "single object pronouns".

**Spanish 3 Homework**

Also, would it be okay if you checked these 4 I got today to practice? It's dealing with the same thing as before. 1.) (you all) Don’t cook the food! My answer: No cocine la comida! 2.) (friend) Don’t cook the food for me! My answer: No cocine la comida para m&...

**@SraJMcGin Spanish 3 Homework**

Hi! Okay so I got a little confused for #4 and #5. So for #4 it would be "Vamos a estudiemos!" or just "Estudiemos"? And then for #5 is it "Vamos a estudiárselo"?

**Spanish 3 Homework**

Hi! Can someone check these for me to see if I'm doing them right? Thank you! Directions Re-write the commands in Spanish using object pronouns. Also, the words in parentheses are saying who you are talking to. 1.) (sister) Wash the dishes for me! My answer: Lavaba los ...

**Chemistry**

A sample of oxygen gas occupies a volume of 3.84 L at 269. K. What volume will the sample occupy at 486. K?

**Chemistry**

Calculate Delta H for the following equation: Zn(s) + 2H+(aq) = Zn2+(aq) + H2(g)

**Math**

One box holds 16 crayons.Another box holds 24 crayons.Write a sentence using words that compares the crayons in the two boxes.

**Science**

Susie decides to pull on a 1.5kg toy (horizontally) with a force of 25N. Friction acts against the toy with a force of 6n. What is the acceleration of the toy?

**Calculus**

A rocket is fired vertically into the air at the rate of 6 miles/min. An observer on the ground is located 4 miles from the launching pad. When the rocket is 3 miles high, how fast is the angle of elevation between the rocket and the observer changing? Specify units.

**Networks**

12.00, (2) 25.00

**algebra 1**

princess leia is a very good math student. Her average math grade was a 95 on her 15 tests. If Darth Mangham decides to drop her lowest grade, write an expression to determine her new test average.

**public speaking**

When preparing an outline for a speech which of the below is NOT a part of the speech outline

**public speaking**

Medium that carries message signals from senders to receivers of communication is

**Chemistry**

What mass of ammonium nitrate is require to produce 145L of N2O at 2850 torr and 42 degree celcius

**Algebra**

Solve 9 - c <2 or -3c > 15 My answer is 7 or -5

**Algebra**

Solve 5<x-2<11 My answer is 7<x<13

**Algebra**

Choose them compound inequality that represents all real numbers that are less then -3 or greater than or equal to 5.

**Algebra**

U = 1,2,3,4,5,6,7,8,9,10 Q=3,6,9 What is Q prime? My answer is 1,2,4,5,7,8,10

**Algebra**

Thank you

**Algebra**

Sis the set of prime numbers that are less than 15. My answer is 2,3,5,7,11, and 13

**Algebra**

What inequality represents the verbal expression all real numbers less then 69? My answer is x<69

**physics**

Scientists want to place a 3300 kg satellite in orbit around Mars. They plan to have the satellite orbit a distance equal to 2.2 times the radius of Mars above the surface of the planet. Here is some information that will help solve this problem: mmars = 6.4191 x 1023 kg rmars...

**Algebra**

Thank you

**Algebra**

solve and show steps 6=x+2/3

**Algebra**

3(x-7)-x= 2x-21 Does this equation have infinitely many solutions My answer is yes.

**Algebra**

4y+8=6y+3 Is the expression true,false,or open? My answer is true = 5/2

**Music**

What is the vertical line at the end of a measure called?

**Math**

44

**Music**

if you add up the durations from left to right on any level of a note tree you end up with a what?

**Math**

I don no andedte

**Math**

In above triangular prism,ab=3cm,ac=4cm,bc=5cm and cd12 cm,show that triangle ABC is a right-angled triangle

**3D Modling**

What are the preset views in Blender Software?

**Physics**

David, who is 65 kg, is driving his car at a speed of 25 m/s. He sees a dog crossing the road and so he steps on the brake to avoid hitting it. His seatbelt brings his body to a stop in 0.4 s. What magnitude of force does the seatbelt exert on him?

**Physics**

02. Comic-strip hero Superman meets an asteroid in outer space and hurls it at 800 m/s, as fast as a bullet. The asteroid is a thousand times more massive than Superman, yet in the comic strip, he remains stationary after releasing the asteroid. Say, his mass is 107 kg, what ...

**math**

compare write >or< for 2,854,376 to 2,845,763

**finance**

A quaint but well established cafe shoppe in the new hot cafe wants to build a new cafe for increased capicity it expect sales are $800,000.00 for the first 5 years, direct cost including labor and material 50% for new cafe will be totaled at $750,000.00 which will depreciate ...

**SAT math**

A family of 2 parents and 4 children is eating lunch at a rectangular table with 2 chairs on each side and one chair on each end. In how many ways can they be arranged if the two parents sit in the two end chairs? a. 12 b. 30 c. 36 d. 48 e. 720

**Algebra**

first set up a regular proportion: 5a/x = 20 ohms/ 25 ohms Because the problem says the current varies inversely you would flip only one side of the proportion: 5A/xA = 25 ohms/ 20 ohms cross multiply: 100 = 25x ohms Divide by 25: x = 4A

**math**

208 square root to nearest hundredth.

**math**

255 square root to the nearest hundredth.

**math**

130 square root to the nearest hundredth.

**Math**

X^ -3 = 216 How do you find x?

**information technology**

How does the organizational strategy drive the IT strategy?

**SAT math**

The slope of the line passing through p and q is -3/5. What is the value of x? P(1,4) Q(x,1)

**Math**

The slope of the line passing through p and q is -3/5. What is the value of x? P(1,4) Q(x,1) I got 6 but Im not sure

**SAT MATH**

if x^2 - y^2 = 77 and x + y=11 what is the value of x?

**Math**

if 5x + 7y = 18 and 2x - 4y = 6, what is the value of 7x + 3y? a. 7 b. 12 c. 19 d. 24 e. 31

**math**

if the sum of 7 integers is even, at most how many of these integers could be odd? a. 3 b. 4 c. 5 d. 6 e. 7

**Earth Science**

thanks!

**Earth Science**

A contour (topographic) map indicates that a stream is flowing across a landscape. If the stream has a constant volume, where on the map would the stream most likely have the highest velocity? a. As the stream moves across several closely spaced contour lines b. as the stream ...

**Math**

if the line containing the points (a,3) and (b,2) has a slope of 1/7, then a-b=

**science**

2 students were testing the amount of fertilizer that would best promote the growth of strawberries in a garden. What is an unavoidable error they can make during this process?

**Biology**

. 2 students were testing the amount of fertilizer that would best promote the growth of strawberries in a garden.List an unavoidable source of experimental error

**biology**

identify and describe how organism could respond to an external stimulus

**Trig**

Given that csc θ = -4 and tan θ > 0, find the exact value of a. x b. sin θ c. cos θ d. r e. sec θ f. cot θ

**Trig**

Given that tan θ = - (√3/8) and θ is in QII, find the exact value of a. r = b. csc θ c. cos θ d. cot θ

**Trig**

Given that cos θ = 5/13 and θ is in QIV, find the exact value of a. y b. sin θ c. sec θ d. tan θ

**Math**

thanks