# Posts by JORDAN

Total # Posts: 1,037

**Math**

Thirty six members of the middle school choir or 30% participated in the regional contest as shown in the model below

**Math1**

trinomials 7d^2 + 50d + 7

**Math1**

trinomials 2n^2 + 15n + 7

**College Algebra**

A goldsmith has two gold alloys. The first alloy is 30% gold; the second alloy is 80% gold. How many grams of each should be mixed to produce 50 grams of an alloy that is 68% gold? amount of 30% gold ______grams amount of 80% gold ______grams

**Math1**

C = 2~r solve for r

**Algebra 2 **

On a cold winter night, Anna makes a cup of hot cocoa. When she takes the first sip, she realizes that the cocoa is too hot to drink. She drops a thermometer into the cup and discovers that the cocoa is 170° F. After 20 minutes, she tries again and the cocoa is still too ...

**Math1**

Y = 5.25

**Math1 **

You buy a new computer for $2100. The computer is decreases by 5% annually. When will the computer have a value of $600? Y = a(1+r/n)^n(t)

**Math1**

furmula for 24*2 48

**Math1 **

Bacteria can multiply at alarming rate when each bacteria splits into two new cells , thus doubling. If we start with only one bacteria which can double every hour , how many bacteria will have by the end of one day?

**Math1**

y=285(498.75)^x

**Math1**

In 1985, there were 285 cell phone subscribers in the same small town of Centerville. The number of subscribers increased by 75% per year after 1985. How many cell phone subscribers were in 1994?

**Math1**

P=6438 P=4%

**Math1**

The population of Winnemucca, Nevada , can be modeled by P=6191(1.040^t where t is the number of years since 1990. What was the population in 1990? By what percent did the population increase by each year?

**Math1**

was is the formula

**Math1**

y=100(1+.04)^x y=16777216

**Math1**

Find a bank account balance if the account starts with $100 , has an annual rate of 4% , and the money left in the account for 12Yrs. This is a Exponential growth word problem.

**Math help! Check my answers ASAP!**

wouldn't num 7 be 4,960? at the end of 3 years is earned $960 I know for a FACT that num 3 is C and that num 6 is plan B 1,040.00.

**Social studies**

My Name Isn't Important is 100% correct

**math**

a backpack is discounted 10% on sale for $37.80

**Statistics**

A physical fitness association is including the mile run in its secondary-school fitness test for boys. The time for this event for boys in secondary school is normally distributed with a mean of 450 seconds and a standard deviation of 40 seconds. If the association wants to ...

**math**

thank you so much for your guidance

**math**

my question is Identify the percent of change as increase or a decrease. Then find the percent of change. Round to the nearest tenth of a percent, if necessary. 1/3 to 2/3. How do I figure it out? I put 33% decrease

**Technical writing**

You are correct. it is A they need subjects and verbs and has to express a complete thought for it to be a sentence.

**Science**

hi ano pong section mo?

**Math, Data Management**

A President and Vice- President for a school council are chosen from a hat with the names of all 12 members in the hat. Determine the probability that Nisha and Anne are chosen as President and Vice- President respectively. Answer Provided: 1/132.

**Social Studies Please help**

I need the answers to Unit 4 lesson 8 Constituition for the United states. It is a pretest not a test and it is for connections academey.

**physics**

A hoop is at rest at the top of a 3.0 m long ramp with an angle of evelation of 24°. If the hoop rolls down the ramp, what is the final velocity of the hoop at the bottom of the ramp

**math, please help**

home work help al's garden is 18 feet long and 30 feet wide , he wants to put fence posts the same distance apart along all sides of the garden , what is the greatest distance apart he can place the fence posts

**Physics**

A 775 kg roller coaster car is at the top of a roller coaster car is at the top of a roller coaster as shown below. The height of the car at point A is the minimum height that is necessary for the car to stay on the loop. The radius of the loop is 30 m. What is the height of ...

**math**

10*2 = 20 ft (Length of boards that he has) 20/3.5 = 8.57 (Number of 3 1/2 feet pieces that he can make) So he does have enough wood.

**Math**

Number of pizzas = 4 Servings = 3/5 Servings that can be made = 4/(3/5) = 6.66666666 As 0.6 is recurring, this is equal to 1*0.666666666666, so as a fraction, this is 2/3. Therefore she has 6 2/3 servings, so Jamilla is correct.

**Math**

Since a 0 has been added to the number being divided by 562, this means that the answer given by the original equation will have an extra 0, so this will be 170.

**Math**

a) 3.4*200 = 680cm = 6.8m b) 3.4*25000 = 85000cm = 850m c) 3.4*10000 = 34000cm = 340m d) 3.4*500000 = 1700000cm = 17000m

**Math**

a) 3.4*200 = 680 b) 3.4*25000 = 85000 c) 3.4*10000 = 34000 d) 3.4*500000 = 1700000

**math**

9+(2/10)+(6/100) = 9.26*10^0

**math**

9+(2/10)+(6/100) = 9.26*10^1

**Pre Algebra**

Thanks you very much for your help. Now I can understand and grasp the concept more. That would be a good thing because our class is having a chapter test on Tuesday.

**Pre Algebra**

Allie needs 4 2/3 yards to finish sewing the edges of a blanket. She only has 3/4 of that amount. how much lace does Allie have?

**math**

5/6

**science**

g = 9.81

**chemistry**

The number of unpaired electrons and the element for [Xe]6s24f145d7: I know the element is Iridium but I cannot figure out the unpaired electrons!

**Chem**

Phenol is a weak acid. We take 3.7 grams of phenol and dissolve it in 65 ml of water. To that water we add 40 ml of a 0.52 M solution of NaOH. You will need to look up the Ka value for Phenol a. What is the pH when the phenol is dissolved in the 65 ml of water ? b. Once the ...

**Physics**

A pair of objects with masses 3m and m are connected by a hook and have a massless compressed spring between them. Initially the objects are at rest. Then the hook unlatches, the spring expands to its released length and the larger mass is then found moving left with speed v. ...

**chemistry**

A sample of 45.1 g of methane gas (CH4(g)) has a volume of 6.20 L at a pressure of 2.90 atm. Calculate the temperature. Another one that I'm stumped on, last question for my practice exam, can you explain how to solve?

**chemistry**

When the following solutions are mixed together, what precipitate (if any) will forms? Write the reaction equation for all the cases and write the net ionic equation for only those reactions that react: potassium nitrate solution and barium acetate I am seriously lost on this...

**chemistry**

Which neutral atoms have the following electron configurations in either a ground state or excited state? Enter the name or symbol. [Ar]4s23d3 - I know that this is Vanadium [Xe]6s24f1 - I thought that this was Lu but it counts it wrong each time! Help please!

**chemistry**

Quantum numbers arise naturally from the mathematics used to describe the possible states of an electron in an atom. The four quantum numbers, the principal quantum number (n), the angular momentum quantum number (?), the magnetic quantum number (m?), and the spin quantum ...

**Maths please help**

(a) Find the points which divide the line joining A(1,3) and B(-4,-1) internally in the ratios: (i) 1:2 (ii) 1:1 (iii) 3:1 (b) On the same x-y axes plot the point A(1,3) and B(-4,-1) and draw the line joining them. Add the three points which you calculated in part (a).

**college chemistry**

using cu+2AgNo3= Cu(No3)2 + 2Ag if you start with 100 grams of copper how many grams of silver can be obtained

**Physics**

3.7 m/s

**Math**

If the volume of a cube is 125m cubed, what is the expression for lenght of each side? I got the answer 5m cubed

**math**

The area of a circle is 25π square inches. What is the length of the radius of the circle in inches? (Area of circle = πr^2). I don't understand it please explain it to me

**Literature**

Please, can anyone help?

**Literature**

What are some differences between “The Finish of Patsy Barnes” by Paul Laurence Dunbar, and “Raymond’s Run” by Toni Cade Bambara, “The Story-Teller” by Saki, and “The Drummer Boy of Shiloh” by Ray Bradbury? I am writing an essay and...

**Physics**

A uniform rod of weight 5N and length 1m is pivoted at the 20cm mark from one end. A weight is hung from the other end so that the rod balances horizontally. What is the value of the weight?

**Language Arts**

YOUR BEST FRIEND is 100% correct I got 100%

**structural grammar**

Identify: May I go to the library?

**Math**

There are two rectangles that are similar. One rectangle has an area of 24 and the other has an area of 15 how do you find the ratio of the area of the first rectangle to the area of the second rectangle?

**Algebra**

If f(x)=x^2-13 and g(x)=11-x, find (f-g)(3) (f-g)(3)=

**Geometry**

thanks!

**Geometry**

Down two where?

**Geometry**

The question is as follows: Two sides of an isosceles triangle with perimeter 112 cm are in the ratio 3:2. Find ALL possible lengths for the base. Please help. Thanks!

**Math**

5*6-15+9 should equal 24

**science**

Water can evaporate faster at higher temperatures.

**Geometry again**

This is exactly what the problem says: Two sides of an isosceles triangle with perimeter 112 cm are in the ratio 3:2. Find ALL possible lengths for the base.

**geometry**

That is what the problem says...

**geometry**

Two sides of an isosceles triangle with perimeter 112 cm are in the ratio 3:2. Find ALL possible lengths for the base.

**math**

A minute is equal to 60 seconds and 6second*10=60seconds so 170meters*10=...

**Math**

A 75% alcohol concentration mixture of water and alcohol and was made by mixing 30 ml of pure alcohol with 150 ml of original mixture

**Calculus**

An electric circuit switches instantaneously from a 5 volt battery to a 18 volt battery 3 seconds after being turned on. Sketch on a sheet of paper a graph the battery voltage against time. Then fill in the formulas below for the function represented by your graph. for t < ...

**American government**

Is the answer c?

**Algebra 1**

You buy a used car for $20,000. It depreciates at the rate of 21% per year. Find the value of the car for the given years (5 and 8) I'm using the equation v=c(1-r), and i end up getting 6154.11 ; im not sure if i subtract that from 20,000 or if that is my answer

**Physics**

A bat strikes a 0.145-kg baseball. Just before impact, the ball is traveling horizontally to the right at 47.0 m/s ; when it leaves the bat, the ball is traveling to the left at an angle of 31.0 ∘ above horizontal with a speed of 58.0 m/s . The ball and bat are in ...

**Math**

If the population of a town grew 11% up to 5,173, what was the population last year.

**math**

A farm has a total of 30 goats and pigs. The number of goats is half the number of pigs. How many pigs are there?

**Math**

$18.00x18=$144.00

**CHEMISTRY**

Interesting. Thank you.

**CHEMISTRY**

Why is I- a stronger reducing agent than F-?

**English**

Look at the abandoned dogs makes more sense because it states that the dogs are ownerless. "Deserted" indicates more of an empty setting like "the town is deserted" meaning there is no one there. So 1 is better than 2. 3 would work. It strongly suggests you...

**Math**

A small theater had 6 rows of 25 chairs each. Workers just removed 9 of these chairs. How many chairs are left?

**Chemistry**

At 25 °C, an aqueous solution has an equilibrium concentration of 0.00147 M for a generic cation, A (aq), and 0.000735 M for a generic anion, B2–(aq). What is the equilibrium constant, Ksp, of the generic salt A2B(s)?

**Chemistry**

What is the equilibrium constant in the following reaction [C][O2]/[CO2] [CO2]/[C][O2] [C]^2[O2]^2/[CO2]^2 [CO2]^2/[C]^2[O2]^2

**Chemistry**

In an endothermic reaction at equilibrium, what is the effect of raising the temperature? The reaction makes more products the reaction makes more reactants*** the reaction is unchanged the answer cannot be determined

**Chemistry**

Consider the reaction N2(g)+3H2<-->2NH3(g). What is the effect of decreasing the volume on the contained gases The reaction shifts toward the product gas The system reacts by increasing the number of gas molecules*** the pressure on the gases decreases momentarily ...

**Chemistry**

If sulfur dioxide and oxygen can be made into sulfur troxide, what is the reverse reaction? 2SO3-->2SO2+O2*** SO3+O2-->SO5 2SO2+O2-->2SO3 SO3+2SO3-->3S+4O2

**Chemistry**

At equilibrium, what is the rate of production of reactants compared with the rate of the production of products? much higher higher*** the same lower

**English**

What makes a verb irregular? does not form it's past and present by adding -ed or -d to the past participle does not form it's past and past participle by adding -ed or -d to the present*** does not act as a verb in context functions as a verb but appears as an adjective

**Chemistry**

Will 1 L of 1 M NaCl contain more chloride ions than .5L of 1M MgCl2? Explain.

**Physics**

An electron traveling at 7.00 x 10^6 m/s enters and passes through a parallel plate capacitor. determine the electric field generated by the capacitor. note that the electron just clears the corner of the positive plate. The distance of the parallel plate capacitor is 2.0 cm ...

**Algebra, functions**

Determine the exact value of k so that the quadratic function f(x) = x2 - kx + 5 has only one zero.

**Science**

Which of the following can be accurately said about climax communities? A. Climax communities are always stable. (B. Restoration of the original climax community is always achieved at the same rate.) C. Climax communities are always uniform. D. Restoration of the original ...

**Math**

Write a real- world problem that can be solved by writing and solving the equation 3 + 10 = X +3.

**Art**

I just took the quick check and the real answers are A C B I promise you that will give you 100 percent

**Physics**

A 17 g bullet strikes and becomes embedded in a 1.20 kg block of wood placed on a horizontal surface just in front of the gun. If the coefficient of kinetic friction between the block and the surface is 0.23, and the impact drives the block a distance of 8.6 m before it comes ...

**Art**

Seriously?!? What's the answer to all 5 art questions? Especially on this lesson.

**Language PLZZ HELP ME!!!!!**

1.A 2.D 3.D 4.D 5.B I got 5/5 100 percent

**Math**

The Problem: You win the grand prize on a game show. You have the following choices: Option 1: $1-million dollars paid as a $25 000 annuity every year over 40 years. Option 2: The present value of option 1 if the current interest rate is 4%, compounded annually. You ...

**sinusoidal functions**

State an equation of a sinusoidal graph with the following properties. The central axis is at y = 5 Two consecutive minimums are found at (3, −1) and (13, −1 find values for a,b,c and d

**grade 12 math**

In 2011, the estimated population of Canada was 34 699 000. If the government wants to use an alphabetic string using letters of the alphabet for every person in Canada. How long should the string of letters (repetition allowed) be so that every person in Canada can have a ...