# Posts by Sam

Total # Posts: 5,194

**Chem**

We will calculate the amount of acid to use in each titration. Assume that you are using 0.0512 M NaOH(aq). A good volume of NaOH(aq) to use per titration is 15 mL. From this molarity and volume, the moles of NaOH can be calculated. Since the unknown acid is monoprotic, this ...

**mATH**

YOU DEPOSIT $520.00 IN AN ACCOUNT WITH 4% INTEREST COMPOUNDED MONTHLY WHAT IS THE BALANCE IN THE ACCOUNT AFTER 5 YEARS 520 X 1 + 0.04/12^60 IS THIS RIGHT WAY TO DO THIS

**Math**

Does the function represent exponential growth or exponential decay. Identify the growth or decay factor. y=9 x (1/2) I'm not sure how to make the chart to show the decay.

**Math**

the speed of sound is approximately 1.2 x 10^3km/h how long does it take for sound to travel 7.2 x 10^2km. answer in minutes

**Biochemistry**

Describe the preparation of 2.00 L of 0.100 M glycine buffer, pH 9.0, from glycine and 1.00 M NaOH. a) What mass of glycine is required? The appropriate pKa of glycine is 9.6. b) What volume of 1.00 M NaOH is required? The appropriate pKa of glycine is 9.6.

**Math**

I have worked and reworked this problem, but I cannot seem to figure it out. Can anyone help? Jeffries & Sons is borrowing $95,000 for four years at an APR of 7.05 percent. The principal is to be repaid in equal annual payments over the life of the loan with interest paid ...

**Finance**

Solved! :)

**science**

A stone is dropped from a balloon going up with a uniform velocity of 5.0 m/s. If the balloon was 50 m high when the stone was dropped, find its height (in meters) when the stone hits the ground. Take g = 10 m/s2 (A) 50 (B) 58 (C) 68 (D) 78.5

**Maths**

A quadrilateral is called cyclic if its corners lie on the circumference of a circle. An example is shown below left: the circle has radius 5 The area A of the quadrilateral for different x values is plotted on the right. It can be calculated that this curve has derivative: dA...

**algebra**

A vat contains 8080 gallons of a fruit juice mixture that is 30%30% orange juice. How many gallons of the mixture should be drained and replaced with pure orange juice to make the mixture 80%80% orange juice? Round your answer to two decimal places, if necessary.

**English**

Gerbner is an author who wrote the book : "society storyteller"

**English**

identify one of Gerbner's main arguments,and then come up with a TV show that could serve as an example for that point

**English**

what is Gerbner's thesis statement?

**psych**

Identify each of the following consequences either positive reinforcement (PR), negative reinforcement (NR), negative punishment (NP) or positive punishment (PUN). NP 1. A teacher meeting with a parent makes that parent feel less powerful by having her sit on small, ...

**psych**

identify if it is Fixed Ratio (FR), Variable Ratio (VR) Fixed Interval (FI) Variable Interval (VI) VR 1. Getting paid for every widget you put on a machine in a factory VI 2. Pop (surprise) quizzes VR 3. Slot machines at Foxwoods casino FI 4. Getting to play computer games ...

**Maths**

A FARMER SPENDS $1000 AND BUYS 100 ANIMALS. THE PIGS COSTS $100 EACH, THE GOATS $30 AND THE CHICKS $5. THE FARMER BUYS AT LEAST ONE OF EACH ANIMAL, WHAT DOES HE BUY?

**Precalculus**

The roots of \[z^7 = -\frac{1}{\sqrt{2}} - \frac{i}{\sqrt{2}}\]are $\text{cis } \theta_1$, $\text{cis } \theta_2$, $\dots$, $\text{cis } \theta_7$, where $0^\circ \le \theta_k < 360^\circ$ for all $1 \le k \le 7$. Find $\theta_1 + \theta_2 + \dots + \theta_7$. Give your ...

**Precalculus**

The roots of \[z^7 = -\frac{1}{\sqrt{2}} - \frac{i}{\sqrt{2}}\]are $\text{cis } \theta_1$, $\text{cis } \theta_2$, $\dots$, $\text{cis } \theta_7$, where $0^\circ \le \theta_k < 360^\circ$ for all $1 \le k \le 7$. Find $\theta_1 + \theta_2 + \dots + \theta_7$. Give your ...

**Precalculus**

What is the smallest positive integer $n$ such that all the roots of $z^4 + z^2 + 1 = 0$ are $n^{\text{th}}$ roots of unity?

**Math**

The Statue of Liberty is 305 feet tall. What scale would be used to make a model 20 inches high?

**Math**

Thanks so much

**Math**

If 4.5 inches on a map convers 270 miles, what is the scale of inches to miles?

**Math**

chris cuts boards that are 2/3 feet long. He has a 7/9 foot long board of wood. How many yards can he cut?

**Physics**

Two point charges each have a value of 3 ?C and are 10 cm apart. What is the electric field at the midpoint between the two charges?

**Precalculus**

Yeah, that is the real solution. I also need to find the complex solution as well.

**Precalculus**

The question latex was messed up, it is: Find all $x$ such that \[x^6 = (x+1)^6.\]

**Precalculus**

Find all xx such that [x6x6 = (x+1)6(x+1)6]. So far, I have found the real solution x= -1212, and the complex solution x = -?1????3?13. Are there more, and if so what/how would be the most efficient find all the solutions to this problem? I am struggling to find the rest of ...

**Math**

What is the value of x if 36x=4 ?

**Math**

36x=4

**Precalculus**

What are all the complex and real solutions for x? Where: (x+1)^6 = x^6 and x is complex? The real solution is -1/2 and, the only other solution I could find was x = -(-1)^(1/3)

**Physical Science**

A step-up transformer has primary coil with 15 turns. How many turns would be required in the secondary coil to increase the voltage from 60 v to 160 v? 15 x=160/80 x=80/15 x=?

**Math**

Convert $e^{-\pi i}$ to rectangular form. Not sure how to start this problem, should I use Euler's formula? Can anyone help provide the steps please? Thanks

**IPC**

The value of acceleration due to gravity (g) on a point 10,000 kilometers above sea level is about 1.49 meters/second2. How much will an object, which weighs 98 newtons on the surface of Earth, weigh on this point? The value of acceleration due to gravity on Earth is 9.8 ...

**Math**

Suppose that 32 feet of fencing is available to enclose a rectangular garden., one side of which will be against the side of a house. What dimensions of the garden will guarantee a maximum area?

**Math**

A shop owner blends three types of coffee,A,B,C.in the ratio 3:5:7 a) calculate the weight of each type of coffee in 45kg of three blended mixture. b) given that type A coffee cost $7 per kg, type B coffee costs $10 kg and type C coffee costs $13 per kg, calculate the cost per...

**micro economics I**

show the MRS for Cobb Douglass preference is ax2/bx1

**maths**

The line segment connecting A(-18,8) and B(-10,-8) is divided in the ratio 1:3 by point C. The coordinates of C are... Please show your working and thx for taking your time to answer this question.

**Algebra 1**

A square painting is surrounded by a frame. the outside edges of the frame are x inches in length, and the frame is 3 inches thick. What is the total area of the frame? A)-12x+36 B)12x-36 C)x^2+12x+36 D)x^2-12x-36 Is it C or D?

**Algebra**

Wait, nevermind my previous answer...is it B?

**Algebra**

What type of polynomial is this? 2 - 5x^3 + 6x A)not a polynomial B)cubic trinomial C)quadric trinomial D)fourth-degree trinomial Since the degree is 4, I think the answer is D. Is this correct?

**Algebra 1**

GCF*

**Algebra 1**

Find the GFC of the terms of the polynomial. 14z^5-70z^4+10z^3 Is the answer 14? I'm not really sure. Can someone please help?

**Management**

can you tell me the reason

**Management**

planning about the companys goal

**Management**

Is pressure of work barrier for planning

**Management**

Is pressure of work a barrier for planning?

**algerbra**

an object is projected upward at a rate of 96 feet per second. find the time when it is 144 feet above the ground

**algebra**

1/b(2b-10)=17 1/b*2b=2 1/b*10=10/b 2-10/b=17 -10/b=15 The answer is -2/3

**pre-calculus**

A rectangular box has a perimeter of 50 inches. Find the length and width of the box that would give the maximum area. Find the maximum possible area of the box.

**pre-calculus**

A rectangular box has a perimeter of 36 inches. Find the length and width of the box that would give the maximum area. e. l = 9, w = 9 f. l = 81, w = 9 g. l = 27, w = 9 h. l = 18, w = 18

**pre-calculus**

A rectangular box has a perimeter of 36 inches. Which of the following equations represents the area of the rectangular box in terms of its width, w? a. A = 36w - w2 b. A = 18w - w2 c. A = 36 - w2 d. A = 18 - w2

**Chemistry**

Thank you!

**Chemistry**

What is the concentration of Pb in mg/L , if you have 25 mg Pb in 5kg of seawater? (note: density of seawater is 1.025 kg/L)

**Chemistry**

Using the fact that fresh water has a density of 1000 kg/m3 , show that 5ppm Pb = 5 mg/L Pb .

**precalculus**

convert r sin? = 2 to rectangular form

**pre calculus**

what is the distance between the pole and the directrix of r = 4/-2-6sintheta

**precalculus**

Find the eccentricity of the function r = 4/-2-6sintheta

**LA**

How is Barrio Boy characteristic of nonfiction and "A Day's Wait" characteristic of fiction? Ernesto in Barrio Boy is a believable character, while the boy in "A Day's Wait" ...

**LA Help!**

we need help coming up with an idea.

**Language Arts**

Your answers are correct!

**English**

How do the themes like the will to live, the importance of storytelling, and the nature of religious belief help drive the plot forward? I don't really know how to answer this.

**Math**

Elena has 15 more dimes than nickels. If she has $2.55, how many nickels does she have?

**math**

(x+4)(x-3) x=-4 x=3

**Spanish**

Ok, thank you. (=

**Spanish**

Thanks! Can you answer another question? What is the difference between a plaza in a Spanish speaking country and one in Los Estados Unidos? A)in Los Estados Unidos, a plaza does not serve a social purpose*** B)in Los Estados Unidos, only small towns have plazas C)in Los ...

**Spanish**

**Image of girls at a cafe.** Donde estan las chicas? A)en el cafe*** B)a la cafe C)en la cafe D)en al cafe Am I correct?

**math**

Water is being pumped at a rate of 100L/H. How long will it take to pump 550L

**Spanish**

Which of the following best describes what a movie theater in a small Honduras town might be like? a) it would host an international festival b) it would show one movie per week c) it would be on the outskirts of town d) it would only open on weekends*** Pls, help!

**Spanish**

Please help, I would really appreciate it!

**Spanish**

Which word best completes the following sentence? The standard variety of Spanish is considered _______. a. natural b. colorful c. easy*** d. neutral I'm not really sure about this one, someone pls help!?

**Social Studies**

Come on Janelle, you could have googled it

**ALGEBRA**

A baseball team has 13 players; how many possible batting orders can the coach make if there are 9 players in the batting lineup?Hello can you help with this problem i try different ways to solve it but it is not match with my answers A. 235,368 B. 1,235,520 C. 879,523 D. 514,...

**math**

can somebody check this problem thank you.

**algebra**

4b/2 + 3 = 11 + b i know the answer is b=8 but i want to know how

**Spanish**

Writeacher?

**Spanish**

Ok. #1 ser and #2 is estar?

**Spanish**

So it would be ser?

**Spanish**

Sorry, just saw your reply, ok. The verb is "is", therefore in Spanish that would be estar or ser?

**Spanish**

Also, Which verb would you use to explain that the movie is being shown in the theater? A)deber B)estar C)ser*** D)hacer Am I correct on this one?

**Spanish**

Which Spanish verb would you use to ask the following question? "What is your name?" A)estar B)ser C)hacer D)tener Is it D? I'm not sure, can someone pls help?

**physics**

thank you

**physics**

What is the direction and magnitude of the net force acting on the hot air balloon? It has an arrow up with 6300, an arrow down with 3200, an arrow to the right of 1350 and an arrow left with 745. Is this how to do it and if so, how do I convert the sin of theta into degrees. ...

**physics**

vf2-vi2 /2deltaX (0-48)2( (103 m/km)2 (1 h/3600 s)2/2(14.9m) -4.8x103m/s2 is what I had so far. It didn't save when I posted.

**physics**

During a crash, a race car driver decelerates from 48.0 m/s to 0 m/s in a distance of 14.9 m. If the drivers mass is 70.0 kg, what is the average force acting on the driver during the crash? This is what I have so far. Am I starting right?

**Georgia State History**

Thank you. That's very helpful...(=

**Georgia State History**

I have to write an essay about MLK Jr. and I need to have a speech he made in Georgia. Can someone please help me and give me any suggestion of speeches made by MLK Jr. in Georgia.

**Maths**

A length of timber is to be cut into 7 pieces using a hand saw. How many cuts will need to be made

**phisics**

a car starts from rest and is accelerated uniformly and the rest of 2m/s2 for 6seconds it then maintaining a constant speed for half a minutes.The brake are then applied and then vehicles unifomly restarted to rest in 5seconds.find maxmum speed in km/h and the total distance ...

**math**

Ellie and Sara see 8 birds in the tree. Ellie see 2 fewer birds than Sara .sara sees 5 birds how many birds does Ellie see

**Science**

Ok, thanks. (=

**Science**

A metal from group 1 and a nonmetal from group 17 are? A. Not likely to bond. B. Likely to form a covalent bond. C. Likely to form an ionic bond.*** D. Likely to form a metalloid. Is this correct?

**Language Arts**

Please help!!!

**Language Arts**

Can someone please help me? I would really appreciate it.

**Language Arts**

Which of the following excerpts from the selection use the active voice in the first sentence and the passive voice in the second? A)There is little, if any, "storm" in the new movie Storm Fever. Aren't actors supposed to act, and aren't directors suppose to ...

**Spanish**

Am I correct?

**Spanish**

What is the correct way to say "I prefer milk" in Spanish? A. Yo prefero leche B. Yo prefiero leche*** C. Yo preferir leche D. Yo priefero leche

**Calculus**

A particle is moving with acceleration a(t) = 24 t + 4. Its position at time t =0 is s(0) = 15 and its velocity at time t =0 is v(0) = 11. What is its position at time t = 9?

**Teas 6**

I'm taking teas 6 soon can semeone help plz

**piedad elementary school**

Which of the given fractions is NOT equal to 1/3? a.) 100/300 b.) 10/30 c.) 3/10 d.) 2/6?

**Algebra**

here's the table: Number of | Perimeter | Ordered | Pentagons | (y) | Pair | (x) | | (x,y) | 1 | 15 | (1, 15) | 2 | 24 | (2, 24) | 3 | 33 | (3, 33) |