# Posts by Zack

Total # Posts: 315

**Math**

The population, in millions, of a city t years after 2000 is given by the function P(t) = 2.9 - 0.008t. Which statement is true? A. The population is increasing by 8,000 people per year. B. The population is decreasing by 8,000 people per year. C. They were 8,000 people living...

**Math**

A. -7 B. -5 C. 5 D. 7

**Math**

If f(x) = -3x + 8, find f(5)

**Math**

X Y 1 -6 2 -5 3 -4 4 5 -2

**Math**

Jake is walking up hill in the sand. Every step Jake takes he climbs 2 feet up, but slides down 6 inches. How far has Jake traveled if he has taken 8 steps?

**Math**

A. -2 B. -1 C. 0 D. 1

**Math**

Given the function f(x) = 3x +4 Determine the value of f(x) for the point (-1, f(x))

**Math**

An automobile dealership uses CODE = 1 for new automobiles, CODE = 2 for used automobiles, and CODE = 3 for separate accessories. A salesman’s commissions are as follows: on new automobile, 3% of the selling price but a maximum of $300; on used automobile, 5% of the ...

**math**

A bag is filled with green and blue marbles. There are 101 marbles in the bag. If there are 25 more green marbles than blue marbles, find the number of green marbles and the number of blue marbles in the bag.

**Precal**

Thank u so much!!

**Precal**

Thank you! But Can you please explain to me how you got it or show ur work?

**Precal**

If sin (theta) = sqrt5 / 3 and cos (theta) = 2 / 3 which of the following is tan (theta)?

**Sequences Math**

Find the function rule. X = -2, -1, 0, 1, 2. Y = 9, 4, -1, -6 -11. Help please this is too hard

**Science**

metamorphic rock

**Science**

Heat and pressure deep beneath the Earths surface can change any rock into A) chemical rock B) gemstone C) metamorphic rock D) sedimentary rock

**Social Studies**

well i dont think it would be D or a now that i think about it maybe b then c

**Social Studies**

d and d i think....

**English**

what are two symptoms the author experiences when exposed to perfume?

**chemistry**

Ba(OH)2(aq) + HCl(aq) BaCl2(aq) + H2O (g) Consider the unbalanced equation above. What is the concentration of the original hydrochloric acid solution if 18.0 mL of the acid reacts with 45.5 mL of 0.280 M barium hydroxide?

**social studies**

1. How important is cooperation to the success or failure of the canning cooperative?

**math**

jessica depoists 3000 in the bank. her money doubles in 12 years. how much was her intrest rate per year(assume annual compounding)

**Algebra 1**

A firework is launched from a cliff overlooking the ocean. The elevation of the firework shell, in feet above sea level, t seconds after launch is given by the expression -16t^2+157t+63. How high is the top of the cliff, in feet above sea level. We just started and my teacher ...

**Maths**

A fair coin is tossed 5 times. If X is the discrete variable the # of tails obtained, a) Draw the probability distribution . b) Find P (X<5)

**Genetics!!**

What is the function of a eukaryotic promoter sequence?

**Genetics, HELP!!!**

Planet X, a recently discovered planet, contains life forms that have double-stranded DNA as the genetic material. The DNA on Planet X is transcribed into RNA which is translated into protein. Planet X DNA contains only two bases: guanine (G) and cytosine (C), in a 20A wide ...

**Math**

For a specific type of machine part being produced, the diameter is normally distributed, with a mean of 15.000 cm and a standard deviation of 0.030 cm. Machine parts with a diameter more than 2 standard deviations away from the mean are rejected. If 15,000 machine parts are ...

**Geometry**

X is a point 7cm from the center of circle O with radius 9 cm. AXB is a chord of the circle such that AX= 2 XB. Find the length of AB.

**Math**

What is 29x47 in expanded algorithm

**Art**

I got 100 with d c d a

**physics**

A 550.27 N force is moving a 396.46 kg block at a constant velocity across a wooden plank. What is the kinetic friction force?

**physics**

A 19.62 kg block is sliding down a 34.52 degree incline at a constant velocity. What is the mu k of kinetic friction between the incline and the block?

**apex geometry**

i like butthole

**Physics**

A solid ball is released from rest and slides down a ramp that makes an angle of 50 degrees with respect to the horizontal. a) What is the minimum coefficient of static friction between the ramp and the ball for no slipping to occur? b) Would this coefficient of static ...

**Spanish**

what was the correct anwser?

**French**

Élise et toi / explorer / ville

**english**

they are right

**Math**

A chemist wants to create a solution that is 24% acid. How many liters of a 40% acid solution must be added to 50 liters of an 18% acid solution to obtain this 24% acid mixture?

**PreCalc**

Find the slope of the radius of the unit circle that corresponds to the given angle. 7π/6 radians

**PreCalc**

Find the equation of the line in the xy-plane that goes through the origin and makes an angle of 1.2 radians with the positive x-axis.

**Alaniz**

An airplane is flying at an altitude of 4000 feet and descends at a rate of 200 ft./m determine whether the altitude is proportional to the number of minutes. Explain your reasoning?

**algebra 1**

Thx for helping me 😁

**algebra 1**

ccan someone helop me i need helo

**algebra 1**

If you place one staple on an electrionc, the balance still reads 0.0 grams.However ,if you place 210 staples on the blance ,it reads 6.80 grams .What is the mass of one staple ? - i don't understand this can u explan it

**Physics**

what is the schwarzschild radius of a black hole with a mass of 1.68x10^43kg

**math**

4.5 minutes

**chemistry**

If 765000 J of energy are added to 7.90 L of water at 291 K, what will the final temperature of the water be? Answer in units of K.

**math**

The 1st,5th,13th term of an arithmetic sequence are the first 3 terms of geometric sequence with a common ratio of 2. If the 21st term of the arithmetic sequence is 72, calculate the sum of the first 10 terms of the geometric sequence.

**Math 115**

A manufacture has been selling 1400 television sets a week at $480 each. A market survey indicates that for each $24 rebate offered to a buyer, the number of sets sold will increase by 240 per week. a) Find the price p(x) of each television as a function of x, where x is the ...

**Math 115**

The manager of a large apartment complex knows from experience that 90 units will be occupied if the rent is 444 dollars per month. A market survey suggests that, on the average, one additional unit will remain vacant for each 6 dollar increase in rent. Similarly, one ...

**Math 115**

A fence is to be built to enclose a rectangular area of 320 square feet. The fence along three sides is to be made of material that costs 6 dollars per foot, and the material for the fourth side costs 14 dollars per foot. Find the dimensions of the enclosure that is most ...

**Math 115**

The revenue from selling q items is R(q)=475q−q2, and the total cost is C(q)=175+6q. Write a function that gives the total profit earned, and find the quantity which maximizes the profit.

**math**

The height of a baseball (h) in meters (t) seconds after it has been tossed out a window is given by the equation h= -5t^2 + 20t + 15. A boy shoots at the baseball with a trajectory of h= 3t +3. Will the paintball hit the baseball? If so at what height and time?

**Science**

Why is photosynthesis an example of a chemical reaction, and why is it classified as endothermic?

**physics**

A 1-m-tall barrel is closed on top except for a thin pipe extending 5.2m up from the top. When the barrel is filled with water up to the base of the pipe (1 m deep) the water pressure on the bottom of the barrel is 10 kPa. What is the pressure on the bottom when water is added...

**chemistry**

formic acid is a weak acid with a ka value of 1.8x10^-4 at 25 celsius a solution with a concentration of .424M formic acid is prepared in a laboratory. 1) Write the ionization equation for an aqeous solution of formic acid 2)determine the ph of the solution prepared above. i ...

**Social Studies Please Check Answer**

the answer is they live in cities

**ART HAVING HARD TIME**

Anime Johnson these answers for connexus is correct your wrong if other people want to give the answers then they can but its really up to the one that is asking for the homework help to just use it or take it and make sure its right before they use it.

**ART HAVING HARD TIME**

Anime Johnson these answers for connexus is correct your wrong if other people want to give the answers then they can but its really up to the one that is asking for the homework help to just use it or take it and make sure its right before they use it.

**Science**

Thanks Anon i got 100%

**Math**

My divisor is 9, I am greater than 7 times 9, I am less than 8 times 9,my remainder is 7,what dividend am I ?

**Math**

Jeffrey biked to the store at 12 miles an hour but took his time on the way home going 8 miles an hour. If it took him 20 minutes to get to the store, how many minutes did it take him to get back?

**Math**

Elizabeth took 13 minutes less than twice as long as Heather to solve the puzzle if their total time together was 23 minutes who took less time to solve the puzzle? How much less?

**Math**

The 80 8th graders took a trip. The boys numbered 16 fewer than twice the number of girls. How many of the eighth graders are girls?

**english**

I need help with finding some poetry devices in the poem: Wordsmith by Susan young. I already have some, but would love a second opinion.

**social studies**

the answers are dcda 100% i took it ur welocme

**geography**

The environment of New York City includes water,land and air.It consists of high rise building or skyscraper.It is very busy and have lots of lights,it is the city that never sleep.

**geography**

How would you describe the environment of New York City?

**Spanish--check my answers please?**

anony is right

**Science**

Me 2 thank u soooo much

**Math**

0.9

**Math**

Hannah made 0.7 of her free throw in a basketball game,abra made 9/10 of her free throws,dena made 3/4 of her free throws,who was the best shooter and explain why you say so

**Math**

Amita decides that she wants the molds to have a square base.How many of the possible molds can she use?

**science**

2.27 m/s to the north

**Calculus**

A ball is thrown vertically upward with an initial velocity of 135 feet per second, the ball’s height after t second is s(t) = 135t – 22t How to calculate average velocity from 1 to 3 seconds?

**Math**

A kaleidoscope is a tube-shaped instrument that contains mirror and colored glass. When a viewer looks in one end, (s)he sees vibrant, changing patterns. Tami sees a kaleidoscope in the shape of triangular prism. It has a height of 4 inches, a base of 5 inches and a depth of 8...

**Math**

Thank you but it would have been better if you told me how to answer it not the answers

**Math**

1 Catriona is deciding how large of a cake to order for a party. She can choose from a 1-layer cake that serves 10 people, a 2-layer cake that serves 20 people, a 3-layer cake that serves 40 people, or a 4-layer cake that serves 65 people. The cost of the cake increases with ...

**math**

what is she made a 8 out of 22

**math**

lenzy has a 77 a c. as a grade. if she fails a test worth 26% 0/22 what will her grade be

**language arts(CHECK ANSWERS)**

please check these answers there really quick. 11.the zoo has recently acquired pandas,giraffes and lions. were does a comma belong? A. After and B. After zoo C. After giraffes(I PICK THIS) D. After acquired 12.Hector would you please relax? where does a comma belong? A. After...

**Economy (vehicles)**

What is a bi-wheel vehicle?

**Physics**

The road runner drops a boulder from a 53 meter high building. When the block is 14 meters above the ground, the 2 meter tall Wiley Coyote looks up and sees the boulder. How much time does he have to get out of the way?

**physics**

Larry stands on a bathroom scale while riding up in an elevator. His mass is 75 kg. At the current time the scale reads 100 lb. assuming the upward direction is regarded as positive, what is Larry’s acceleration in m/s2? What is happening to the elevator at this instant (...

**Biomechanics**

Larry stands on a bathroom scale while riding up in an elevator. His mass is 75 kg. At the current time the scale reads 100 lb. assuming the upward direction is regarded as positive, what is Larry’s acceleration in m/s2? What is happening to the elevator at this instant (...

**English**

I think this is C if not Which analogy would best go with this one? branch:tree:: A. flower:garden B. teo:three C. tentacle:octopus D. near:far

**English**

Would this be D if not Which analogy would best go with this one? A:Z:: A. girl:mother B. weight:pounds C. truth:lie D. prologue: epilogue

**English**

Whish analogy would best go with this one? A:Z:: A. girl:mother B. weight:pounds C. truth:lie D. prologue: epilogue

**english**

Create an accurate summary of “The Cold Equations” that details the important events of the story. Provide your answer in three to five sentences. Can someone help me with this please?

**Algebra**

One side of a triangle is 3 inches shorter than twice the length of the shortest side. The third side is 5 inches longer than the shortest side. If the perimeter is 110 inches, find the lengths of all three sides. So what are all the three sides?

**Math**

(2x2)-(3x2x-3)-(2x-3x2) 4 - 18 - -12 -14 - -12 -2

**Algebra**

When setting the price of admission tickets for the amusement park, Tabitha wants the price for a two child, two- adult family to be $100. She also wants the adult tickets to cost $8 more than twice the cost of a child's ticket. How much should a child"s ticket cost?

**geometry**

Assume that lines that appear to be tangent are tangent. O is the center of the circle. Find the value of x. Figures are not drawn to scale. m<P=14

**Advanced Functions/Trig**

Prove the identity: cos^4 x + sin^4 x = 1 - (1/2)sin^2 (2x)

**Algebra**

How many hands of 5 cards can be made from a standard deck of cards such that each hand contains exactly 1 red card and 4 black cards?

**Chemistry 12**

Determine the molar solubility of lead(II) iodide, PbI2, in 0.050 mol/L NaI. Ksp of PbI2 = 9.8 x 10^(-9)

**Math**

180

**Advanced Functions/Trig**

Prove the following: sin(x+y)sin(x-y) = cos^2 (y) - cos^2 (x)

**Physics**

The electric field lines surrounding three charges are shown in the figure below. The center charge is q2 = -15.9 µC.

**Math**

80=20 divide 5

**Math**

What is the mathematical expression for 80 is 20 times as many as 5?