Posts by Kate

Total # Posts: 2,084

math
What does it mean for concavity of the original graph if there is an asymptote in the f'' graph?

correction
Actually I got the curve is concave up when x>-1.5

calculus
Find the interval on which the curve of y= the integral from 0 to x of 2/(1+3t+t^2)dt is concave up. I asked this question yesterday and I would like to see if someone could check my answer. I got the curve is concave up when x<-1.5

calculus
Ok this helps a lot, thank you!

calculus
I was confused about which derivative the question has given me. Did they give me the integral of the first derivative? Or are they telling me to integrate the original function to find the first derivative? So all I need to do is take the derivative of 2/(1+3t+t^2)?

calculus
Find the interval on which the curve of y= the integral from 0 to x of 2/(1+3t+t^2)dt is concave up. Can someone please explain? I'm so confused about how to find the answer, all I know is if the 2nd derivative is positive then it's concave up.

World History
How do the Crusades and Muslim and Christian accounts of them demonstrate how these two religions resembled each other more than either one resembles Buddhism, during the postclassical period?

Music
What musical term is indicates a chord where the notes are played one after another rather than all together?

math
If you roll a 6-sided die 90 times, what is the best prediction possible for the number of times you will roll an odd number?

Algebra
I need help with lesson 1 solving 2 step equations -- unit 7 ;; i dont understand this is also for connexus students!

Math, algebra, geometry
John Anderson knows that the pizza pipeline charges its customers a certain amount per one topping pizza, plus a fixed price for delivery. The checks that John wrote for the last two deliveries were $17 for two pizzas and $31 for four pizzas. How much would each pizza cost ...

social studies
thank you so much... that was bugging me so much today

social studies
how is life different now in the European Union (EU) than before it was formed.

Chemistry
(A) calculate the density of NO2 gas at 0.970atm and 35 Celsius. (B) calculate the molar mass of a gas if 2.50g occupies 0.875L at 685torr and 35 Celsius. Answers are 1.77g/L 80.1g/mol

Science
A volleyball is served at the speed of 8.0 m/s at an angle 35° above the horizontal. What is the speed of the ball when received by the opponent at the same height

math
D!

Math Help
Thank you so much ^^

Math Help
Plssss help mee input Output 1 9 2 12 3 15 Is the relationship linear? Why or why not?

Hard Math
Simplify f+ g/f-g when f(x)= x-2/x+5. And g(x)= x-5/x+2 Choices, A. 2x^2 -29/21 B. 21/2x^2 -29 C. - 2x^2 -29 /29 D. - 29/2x^2-29

Math.!
Thank you! I always mess up on these i had originally gotten B but i guess thats my error.

Math.!
Simplify f+ g/f-g when f(x)= x-2/x+5. And g(x)= x-5/x+2 Choices, A. 2x^2 -29/21 B. 21/2x^2 -29 C. - 2x^2 -29 /29 D. - 29/2x^2-29

@steve
Is it A then steve??

Math
What is the domain of f/g, given f(x)= x+2 and g(x)= x-7? I was told this below, all real numbers EXCEPT 7 But My choices are this, (-infinity,7) U (7,infinity) (-infinity,-7) U (-7,infinity) (-infinity,-2) U (-2,7)U (7,infinity) (-infinity,infinity)

Pre-Cal
My choices are this, (-infinity,7) U (7,infinity) (-infinity,-7) U (-7,infinity) (-infinity,-2) U (-2,7)U (7,infinity) ((-infinity,infinity)

@scott.
How did you get that, @scott

Pre-Cal
What is the domain of f/g, given f(x)= x+2 and g(x)= x-7?

Algebra
what happens when u merge two fruit companie togerher worksheet

math
Emily has a book with 200 pages , she read 150 pages , what's the percentage of books she read?

Chemistry
Some instruments differentiate individual quanta of electromagnetic radiation based on their energies. Assume such an instrument has been adjusted to detect quanta that have 3.50× 10–16 J of energy. What is the wavelength of the detected radiation? Give your answer ...

Math
i dont know. what is the answer ?

Physics
A block is given an initial velocity of 4.00 m/s up a frictionless incline of angle ? = 21.0°. How far up the incline does the block slide before coming to rest?

Physics
A boat crosses a river of width 164 m in which the current has a uniform speed of 1.3 m/s. The pilot maintains a bearing (i.e., the direction in which the boat points) perpendicular to the river and a throttle setting to give a constant speed of 2.4 m/s relative to the water. ...

Algebra 2
Describe the following functions transformation:g(x)=-f(-2x)+5

Geometry
Given: ?ABC and ?CBD are supplementary angles. m?ABC = 4x + 7, m?CBD = 2x ? 1. Prove: m?ABC = 123 How do I write this in a two column proof?

Math
Mrs. Fields bought a sapling from a tree farm nursery and observed a linear growth of the sapling over a period of 6 months. She found the height of the sapling, H centimeters, and the time, t months is related by the linear equation H=2(4+3t) a) write an equation for t in ...

Chem Help PLEASE
A pediatrician prescribes the antibiotic amoxicillin to treat a child suffering from an ear infection. The prescribed dose is to be 72.1 mg of drug per kilogram patient body mass per day. The drug is to be administered twice each day in the form of a liquid containing 126.0 mg...

Math
1. write an algebraic expression for the word phrase: the quotient of r and 12. A.r*12 B.r/12 C.r-12 D.r+12

Math
2500 cubic centimetres = 2.5 liters. Thanks Steve <3

Math
A rectangular glass tank is half filled with water. The measurements of the tank are 30cm in height, 25cm in length and 20cm in width. How many litres of water will raise the water level in the glass tank by 5cm?

English
Why does Yoni think the Arab he finds is perfect for his film? It was in Bethlehem, actually, that Yonatan found his Arab, a handsome man who used his first wish for peace. His name was Munir; he was fat with a big white mustache. Superphotogenic. It was moving, the way he ...

English
Ok. I think he's cheap, lazy, and loves money?

English
I'm not quite sure. That's why I'm asking Reed.

English
Which details help you more fully understand Yoni's character and intentions? Evaluate the line, “No prep, no plotting, natural as can be…” Lines with answer: "It was genius, Yoni was sure. And, if not, at least it was cheap. All he needed was a door to...

math
Find P if I=122; R=5 1/4% and T=9 months.

Calculus
Give an example of a function that is integrable on the interval [-1,1], but not continuous on [-1,1]. Explain.

SPANISH
El futuro con ir + a + infinitvo- How do I do this sentence in spanish? Yo no__________ hacer gimnasia. Thanks!

Chemistry
"Hi there! So I have a chemistry project due in a few hours. I need to find the molar mass of a specific antacid tablet, but all I know is that the tablet is made up of 550mg CaCO3 and 110mg Mg(OH)2 I also know that the tablet has a mass 1.35g. How do I find the molar ...

Calculus
if a penny is dropped from the top of a 320 ft. building, how fast will it be moving when it hits the ground? So we can find the speed of the penny as instantaneous rate of change of height of penny when it hits ground. Instantaneous rate of change of y with respect to x is dy...

Calculus
if a penny is dropped from the top of a 320 ft. building, how fast will it be moving when it hits the ground? v2 = u2 + 2gH, Here, u = initial velocity = 0 v = final velocity g = 32ft/s2 H= 320ft So, v2= 0 + 2 × 32 × 320 or,. v = ?(2×32×32×2×...

math
Two ship P and Q left a port R at the same time.Q sailed on a bearing of 150 while P sailed on the north side of Q.After a distance of 8km and 10km by P and Q respectively,their dirtance part was 12km.find the bearing of P from R.

Spanish
Mucha gente prefiere (lavarse) los dientes antes de desayunar. How to I conjugate the word lavarse? I thought it was se lavan but I got it wrong. Thanks for the help!

Math
The function T(h) = 144 – 0.003h represents the Temperature, T(h), at a height h on a mountain. Which of the following statements best describes the slope?

biochem
Two samples of double-stranded DNA have been prepared. Nucleotide analysis reveals that sample 1 is found to be 21% A, while sample 2 is 26% G. Knowing this, which of the following statements is true? Sample 1 has a higher AT content than Sample 2. Sample 1 is 29% T. Sample 2 ...

math
Two teams, the Exponents and the Radicals, square off in a best of 5 math hockey tournament. Once a team wins 3 games, the tournament is over. The schedule of the tournament (for home games) goes: E-R-E-R-E If the Exponents are playing at home, there is a 60% chance they'...

Math
Sally wants to build a fence around her pool. The pool is 26 feet long by 21 feet wide.The fence is to be 15 feet from the edge of the pool. a.What are the outside dimensions of the area surrounding the pool? b. how many feet of fencing will sally need? 41 ft by 36 ft; 77ft 41...

Math
Thank you sooooo much Mrs Sue! You have been a big help throughout my years of using jiska!!!

Math
Sally wants to build a fence around her pool. The pool is 26 feet long by 21 feet wide.The fence is to be 15 feet from the edge of the pool. a.What are the outside dimensions of the area surrounding the pool? b. how many feet of fencing will sally need? 41 ft by 36 ft; 77ft 41...

science
would all of the lead (ii) bromide (ksp = 6.3 x 10^-6) dissolve if 2.25 g is added to 500 mL of water

math
You invested money into two funds. Last year,the first fund paid a dividend of 8% and the second a dividend of 5%, and you received a total of $1330. This year, the first fund paid a 12% dividend and the second only 2% and you received a total of $1500. How much did you invest...

Social Studies
(Can you please check my answers)one major landform that is found in both united states and canada is A. The Kilauea Volcanos B. The Rocky Mountains (C.) The Great Basin D. Mount Logan 2 Why are the Great Lakes important to both the United States and Canada A. They form the ...

Language art 4th grade
What is the best way to combine sentences 7 and 8? (7)We got a few dog snacks from Jenny's dad. (8) we started giving snacks to the dog. Answer choices:- a. We got a few dog snacks from Jenny's dad and then we started giving snacks to the dog. b. We got a few dog ...

math
sector 2 on a spinner is a 90 digrese (sorry for spelling) sector. if the spinner is spun twice, what is the probability that it will stop in sector 2 both times?

ELA
“I want to make sure we use all our talent. Not just 25 percent. Don’t let anyone rob you of your imagination, your creativity, or your curiosity. It’s your place in the world; it’s your life. Go on and do all you can do with it, and make it the life you ...

History
Im sorry i mean B

History
I think the answer is C

History
Why was it important for licoln to wait to issue the Emancpation Proclomation? A. It could have caused revolts in the North B.It was important to have popular support beforehand**** C. It could have ended the rebellion before union victory D. it may have caused lincoln to lose...

chemistry
With reference to collision theory account for the colour change that occurred when HCl was added to K2CrO4 (Cromate)

chemistry
number of moles = mass/Molar mass N=m/Mr

Math (Business)
I haven't don't simple interest in a while so don't quote me on this but I think you're missing the T part of the equation eg. P x R x T = I. rate is 18x31/365, P is ... but where is T in your final equation? hope that was relevant.

Math-Statistics
CAN SOMEONE HELP ME WITH THIS? A recent study found that, of the 1771 participants aged 12 to 19 in the National Health and Nutrition Examination Survey, 19.5% had some hearing loss (defined as a loss of 15 decibels in at least one ear). This is a dramatic increase from a ...

physics
That gives me the wrong answer according to the website

physics
The distance between two successive crests of a certain transverse wave is 1.13 m. 20 crests pass a given point along the direction of travel every 18.6 s. Calculate the wave speed. Answer in units of m/s. So far I have gotten 1.22 for my answer by 20/18.6 x 1.13. I also tried...

History
Which of the following best describes why sit-down strikes resulted in success for workers? A Owners lost more money the longer strikers occupied the factories. B The strikes forced workers to agree to management’s terms. C The strikes allowed workers to form new company ...

Algebra II
Thanks Mr.Bob & Mr. Steve.. AGAIN. I honestly need to practice this more obviously but 4 more months till graduation and everyone on here has been helping me since the 9th grade so it's a huge thank you.

Algebra II
Find the equation of the line that passes through the points (1,4) and (2,-8). Question options: y = -3x + 9 y = 6x + 5 y = -12x + 16 y = 12x - 8 < this one is wrong.. I thought I had it right so how do I find the correct answer? i'm not getting any of the other answer ...

Algebra II (plz)
Thank you! im sorry.

Algebra II (plz)
Find the slope of the line that contains the two points (3,2) and (1,-4). m = - 3 m = - 1/3 <-- ? m = 3 m = 1/3 Find the slope of the line that contains the points (-2, 4) and (-4, 6). m = -1 m = 1 <-- m = - 1/3 m = 1/3 Find the equation of the line that passes through ...

Algebra
Find the slope of the line that contains the two points (3,2) and (1,-4). m = - 3 m = - 1/3 <-- ? m = 3 m = 1/3 Find the slope of the line that contains the points (-2, 4) and (-4, 6). m = -1 m = 1 <-- m = - 1/3 m = 1/3 Find the equation of the line that passes through ...

Algebra (check answers plz)
Thank you and yes I honestly do... it's hard for me at least but I do try.

Algebra (check answers plz)
Find the slope of the line that contains the two points (3,2) and (1,-4). m = - 3 m = - 1/3 <-- ? m = 3 m = 1/3 Find the slope of the line that contains the points (-2, 4) and (-4, 6). m = -1 m = 1 <-- m = - 1/3 m = 1/3 Find the equation of the line that passes through ...

math
John earn scores of 82%, 74%, and 78% on three mid-term tests in his Math course. To earn a B, his overall course mark needs to be at least 80% and less than 90%. The overall course mark is 1 3 (mid-term average) plus 2 3 of the final examination. In what range of values can ...

Algebra
spencer deposit 540 in a bank account that pays annual simple interest rate of 4.5%. How much interest will he earn after 3 years? a.about $73.00 b.about $7,290.00 c about $126.00 <-- im not sure d.about $200.00 How do I figure this out?

Algebra
ohhh thanks! sorry for posting this question twice.

Algebra
Thanks... can you help me with this question also? spencer deposit 540 in a bank account that pays annual simple interest rate of 4.5%. How much interest will he earn after 3 years? a.about $73.00 b.about $7,290.00 c about $126.00 <-- im not sure. d.about $200.00

Algebra
What is the value of (fog)(-5) f(x)=x-10 ; g(x)=x2-3 a. (fog)(-5)= -38 b. (fog)(-5)=12 <--- ? c. (fog)(-5)=222 d.(fog)(-5)= -228

English
I didn't get any help.. I read the poem but still can't find the central theme and also I can't find a modern version of sonnet 16 by Elizabeth.

English
Can someone help me come up with the a central theme for sonnet 15? PLEASE and also help me find a modern version of sonnet 16 by Elizabeth B.

English
Thanks Ms. Sue See I was thinking for 27 that it's when you love someone you can't stop thinking about them? Now for 15 I honestly don't know....

English
Hello can someone help me come up with the central theme for sonnet 15 and 27 by Shakespeare and lastly sonnet 27 by Elizabeth Barrett... please and thanks!

Math
Triangle LMG has side lengths of 7cm, 24 cm, and 25 cm. Which type of triangle is LMG? a.right <--- or b? b.obtuse c.acute d.equilateral Bethel Park is 28 miles directly west of Jeanette and 10.3 miles directly south of Pittsburgh. Which is the length of the road that runs ...

science
did anyone do the lab for product that conserve resources unit 4 lesson 5

electrochemistry gr 12
Using the following spontaneous reactions, classify the 3 metals involved (Cr, Sn, Al) according to increasing reductant properties. a) 2Cr + 3Sn2+ ----> 2Cr3+ + 3Sn b) Al + Cr3+ ----> Al3+ + Cr

electrochemistry gr 12
Will there be a reaction is a magnesium strip is placed in a solution containing Ca2+ ions?

science
the body system responsible for the exchange of gases between the body and the enviroment is the

Math
Ms Rowe needs to make a box to hold 729 cm^3. She needs the box to have a lid. What are the dimensions of the box that would minimise the surface area?

Math
what is the measure of the angle of an arc that is 25 cm long with a radius of 7?

art
My internet is down for my computer and I can only use data. I can't go back for my notes 1. This drawing was made using what natural resource? (1 point) A. harvesting the clay from a corn plant B. making the clay from water and pigments C. making the clay by mixing sand ...

Calculus
Evaluate ?tan(3x)dx

Calculus
Evaluate ??(x^3+1)dx

Fibonacci Sequence
The sequence < un > is defined by the recurrence Un+1 = 3Un+1\5Un+3 initial condition of u1 = 1: Need to show un in terms of Fibonacci / Lucas numbers

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