Tuesday
September 1, 2015

Posts by Natalie


Total # Posts: 580

Math
A banquet hall has 22 tables for 4 and 15 tables for 6 ,but 3 chairs are missing from the tables .How many many chairs will there be if 134 are seated
August 31, 2015

math
If you have to find f(t)g(t) where f(x) = 2/x and g(x) = 4x+2 I got 2/t times 4t+2 and then from that I got 8t+4/t. How do I simplify that further?
August 31, 2015

math
Just kidding! I got it!
August 31, 2015

math
Find f(g(x)) where f(x) = 2/x and g(x) = 4x+2 I got till 2/(4x+2) but am not sure where to go from there. Please help!
August 31, 2015

math
For the data I gave above, we need to find a formula for the exponential function. I got b to be 605. That part is right at least, right? Because of how 605 = b times a^0 which means b equals 605. (0 because the 605 matches up with sea level in the data--I posted it weirdly) ...
August 30, 2015

math
How did you get the 0.0000917? I plugged log(1.096) divided by 1000 and got 3.98 times 10 to the -5.
August 30, 2015

math
For example, when I try to solve an equation like 1.096 = a^1000, what should I do? I'm trying to find a formula for this set of data and that's how I got the above equation: d=??? Elevation (ft) Sea level labeled h 1000 2000 3000 4000 Takeoff roll (ft) labeled d 605 ...
August 30, 2015

math
Thank you! I forgot that you could divide the two!
August 30, 2015

math
Given an exponential graph that are concave up and the points (1,4) and (-1, 16), give a possible formula of the function. I plugged the variables into the f(x)=b times a^x and got: 4= b times a^1 and 16=b times a^-1 I am not sure where to go from here.
August 30, 2015

math
Thank you so much for all of your help!
August 28, 2015

math
A town has a population of 2000 people at time t = 0. In each of the following cases, write a formula for the population, P, of the town as a function of year t. (a) The population increases by 60 people per year. I thought it would be P= 2000 (1.03)^t (b) The population ...
August 28, 2015

Math
Wow, you're a genius! Thank you so much, that worked! I didn't even think about involving the quadratic equation! Thank you again!
August 27, 2015

Math
For better clarification, the first part to this problem had (0,2) instead of (0,b) and the answer came out to be (-2,4). I kind of guess and checked for that question.
August 27, 2015

Math
Consider the functions in the figure below. Find the coordinates of C in terms of b. So there are two functions. There is the y=x^2 u-shape and then a line in the middle of it with points (0,b) and (1,1) in that order from left to right. Farther to the left of point (0,b) is ...
August 27, 2015

math
Thank you so much! That worked!
August 27, 2015

math
I posted this question yesterday and I was told I was correct but for some reason the online hw website will not take it.
August 27, 2015

math
For tax purposes, you may have to report the value of your assets, such as cars or refrigerators. The value you report drops with time. "Straight-line depreciation" assumes that the value is a linear function of time. If a $1020 refrigerator depreciates completely in...
August 27, 2015

math
Thank you so much! That really helps. I totally forgot that the range would have to be over 9 due to the plus 9 in the equation.
August 27, 2015

math
Find the domain and range for y=x^2+9. Is the answer all real numbers? How would you enter that in interval notation? From Googling the definition of real numbers, I now understand that the infinity sign would not be included. For a continuous function you use closed brackets...
August 27, 2015

Math (functions)
Thank you!
August 26, 2015

Math (functions)
For tax purposes, you may have to report the value of your assets, such as cars or refrigerators. The value you report drops with time. "Straight-line depreciation" assumes that the value is a linear function of time. If a $1020 refrigerator depreciates completely in...
August 26, 2015

chemistry
Arrange the following aqueous solutions in order of decreasing freezing points (lowest to highest temperature): 0.10 m Na3PO4, 0.35 m NaCl, 0.20 m MgCl, 0.15 m C6H12O6 and 0.15 m CH3COOH.
July 20, 2015

Physics
M1 = 45.0 kg is a spherical mass at the origin. M2 = 16.6 kg is also a spherical mass, and is located on the x-axis at x = 78.0 m. At what value of x would a third mass M3 = 15.5 kg experience no net gravitational force due to M1 and M2?
July 11, 2015

PHYSICS
Can you please make a solution for this problem so i could understand it better...
June 20, 2015

PHYSICS
A and B run around a circular track whose cicumference is 150m. when they run is opposite directions they meet every 5 seconds, but when they run in the same direction from the some point they are together every 25 seconds. what are their rates? ans. 18m/s and 12m/s can you ...
June 20, 2015

science
how physical/mechanical and chemical weathering different?
May 18, 2015

science
how are they different?
May 18, 2015

science
can someone help me?
May 18, 2015

science
how are physical/mechanical and chemical weathering alike?
May 18, 2015

PLEASE HELP ME!!
someone please help me figure out this problem, and btw i am not asking for answers as others say... i am asking how to figure it out or for hints. :)
May 17, 2015

PLEASE HELP ME!!
UGH THIS PROBLEM IS KILLING ME!!!!!!!!!
May 17, 2015

PLEASE HELP ME!!
Last year, the Widget Corporation had $650,000 in sales. This year, sales are down 4%. How much did the Widget Corporation sell this year?
May 17, 2015

math
thank you so much!
May 17, 2015

math
is it 1.0335 and then round up?
May 17, 2015

math
would you do 7.95*0.13?
May 17, 2015

math
ok but i dont know how to do this...
May 17, 2015

math
70
May 17, 2015

math
would it be 65.95?
May 17, 2015

math
what do you mean though?
May 17, 2015

math
so can i round to 95 dollars .30????
May 17, 2015

math
wait, so would you do 100-30=70 and then round up????
May 17, 2015

math
do you do 0.30*94.95????
May 17, 2015

math
. A jacket costs $94.95. It is on sale for 30% off. Estimate the sale price.
May 17, 2015

math
do 0.06*12.95=0.777
May 17, 2015

math
. Estimate the sales tax and final cost of a book that costs $12.95 with a sales tax of 6%.
May 17, 2015

math
this problem is esay and simple, all you do is that you kinda just round up to the nearest decimal, so 0.09*112,000=10,080
May 17, 2015

math
A real estate agent receives a 9% commission for every house sold. Suppose she sold a house for $112,000. Estimate her commission.
May 17, 2015

Stats
From previous records a shipping company knows that the cost to deliver a small package within 24 hours is $15.50. The company charges $17.95 for shipping, but guarantees to refund the full charge if the delivery is not made within 24 hours. If the company fails to deliver ...
May 5, 2015

Physics
a 0.30-m radius automobile tire rotates how many rad after starting from rest and accelerating at a constant 2.0 rad/s^2 over a 3.54-s interval
April 20, 2015

Calculus I
Hello, The pressure P and volume V of an expanding gas are related by the formula PVb=C, where b and C are constants (this holds in adiabatic expansion, without heat gain or loss). Find dPdt if b=1.6, P=12kPa, V=80cm2, and dVdt=20cm3/min. Thus far, I got d(PV)/dt= p(dv/dt) + V...
April 10, 2015

Physics
a 12 kg physics book flies through the air with a momentum of 20kg m/s. what is its speed?
April 6, 2015

Physics
Yes the original mass was 20.0kg my mistake. According to my calculations the answer will be -6m/s.
April 6, 2015

Physics
A 2.0kg object initially at rest explodes breaking into two pieces of mass 5.0kg and 15.0kg. If the 15.0kg piece moves with a speed 2m/s what is the speed of the 5.0kg piece? A. -6 m/s B. 15 m/s C. -5 m/s D. 20 m/s
April 6, 2015

BOB
A sphere of radius 20 cm and mass 1.80 kg starts from rest and rolls without slipping down a 30.0 degree incline...
March 10, 2015

science
1.40g each of CO, H2O, and H2 are sealed in a 1.41−L vessel and brought to equilibrium at 600 K. CO(g)+H2O(g)⇌CO2(g)+H2(g)KC=23.2 How many grams of CO2 will be present in the equilibrium mixture?
March 10, 2015

Chemistry
how much heat is absorbed when 63.7 grams of water at 100 degrees Celsius is converted to steam at 100 degrees Celsius? -I need help figuring out how to do this.
March 4, 2015

Physics
Two blocks are connected by a string on a pulley. One block is on an incline, and the other is hanging. The smooth inclined surface makes an angle of 35 ∘ with the horizontal, and the block on the incline has a mass of 5.7 kg. The mass of the hanging block is m = 4.0kg...
February 25, 2015

PHYSICS
A hypothetical planet has a mass 1.55 times that of Earth, but the same radius. What is g near its surface?
February 20, 2015

math
Emma os using connecting cubes to make a rectangular model with a height of one connecting cube. With her cubes she can make the model in exactly 3 different ways. If Emma has more than 12 but fewer than 17 cubes how many cubes does she have
February 19, 2015

math
Hey someone use 192 beads to make a necklace and bracelet it takes 5 times as many beads to make the necklace that the bracelet how much beads it take to make the necklace
February 12, 2015

physics
A rifle bullet is fired at an angle of 28.3° below the horizontal with an initial velocity of 177 m/s from the top of a cliff 52.2 m high. How far from the base of the cliff does it strike the level ground below?
January 6, 2015

math
At a local high school,560 out of 1060 students voted to support a community fund drive. What percent of the students did not support the fund drive? 47% is this the correct answer?
December 19, 2014

physics
A 590 kg racing car completes one lap in 14.3 seconds around a circular track with a radios of 45.0 meters. The car moves at constant speed. (A) what is the acceleration of the car? (B) what force must the track exert on the tires to produse this acceleration?
December 11, 2014

math
A ball is thrown vertically upward with an initial velocity of 5 ft/sec from a height of 20 feet. Which function models its motion? i literally am lost and have no idea how to this problem. if i could have help with the steps on how to do the problem and to get the correct ...
November 21, 2014

algebra
When Charlotte planted her tomato plant, it grew 3 inches in one week. After 5 weeks, the tomato plant was 23 inches tall. Assume the relationship is linear. Find and interpret the rate of change and the initial value.
November 17, 2014

physics
Tony Hawk skates down a ramp. If he is moving at 5.4 m/s at the bottom of the ramp and has a mass of 82 kg, how tall was the ramp?
November 4, 2014

physics
How fast will a roller coaster, with a mass of 1200 kg, be moving at the bottom of an 18 meter tall hill?
November 4, 2014

physics
Bobo jumps out of a plane 2,000 m in the air. If Bobo has a mass of 100 kg, how much kinetic energy will he have after falling for 200 m? Assume no air resistance.
November 4, 2014

physics
A team of sled rides has a mass of 180 kg. If they have 8,000 J of kinetic energy at the bottom of the hill, how tall was the hill they just tackled?
November 4, 2014

physics
Find the height of a cliff if the 87.6 kg cliff diver hits the water at 15.5 m/s.
November 4, 2014

Fractions
Fiona and camila took a load of peaches to the farmers market. During the first hour , they sold 1/2 of the peaches plus 1/2 of a peach. In the second hour, they sold 1/3 of the remaining peaches plus 1/3 of a peach. In the third hour , they sold 1/4 of what was left and 3/4 ...
October 26, 2014

please check my english
Here's all the answers for CA students D,B,D,C,A,D Thanks me later!!!! 100%
October 13, 2014

english
why is sasha in trouble in the story "a problem"
October 10, 2014

physics
A home run is hit such a way that the baseball just clears a wall 26 m high located 118 m from home plate. The ball is hit at an angle of 37 ◦ to the horizontal, and air resistance is negligible. Assume the ball is hit at a height of 1 m above the ground. What is the ...
October 6, 2014

German
Hello, I require help with my German Next week I'll be starting taking additional lessons to help me with my coursework, but for now, I would be immensly grateful for your help. I've managed to do most of my tasks by myself, however there are some that are just too ...
September 29, 2014

physics
A motorcycle has a constant speed of 21.6 m/s as it passes over the top of a hill whose radius of curvature is 100 m. The mass of the motorcycle and driver is 392 kg. Find the magnitude of (a) the centripetal force and (b) the normal force that acts on the cycle.
September 28, 2014

physic
A ball is launched horizontally at 5 m/s from the top of a 45 m tall building. A man stands at rest 6 m from the base of the building. If there is a 0.3 s reaction time for the man to start moving once he sees the ball launched, find the magnitude of the man's acceleration...
September 28, 2014

Physics
Suppose that the swimmer in the figure below has a swimming speed relative to the water of 0.45 m/s, while the speed of the current is 2.0 m/s. If it takes the swimmer 160 s to cross the river, how wide is the river?
September 24, 2014

spanish
un ____ es una escuela secundaria
September 4, 2014

physics
hill that has a 37.7 % grade is one that rises 37.7 m vertically for every 100.0 m of distance in the horizontal direction. At what angle is such a hill inclined above the horizontal?
August 21, 2014

physics
A highway is to be built between two towns, one of which lies 47.0 km south and 69.0 km west of the other. (a) What is the shortest length of highway that can be built between the two towns, and (b) at what angle would this highway be directed, as a positive angle with respect...
August 21, 2014

algebra
There were a total of 2000 tickets sold at a recent sporting event on Saturday. The cost of an adult ticket was $4.00 and a child's ticket was $2.00. The total amount of money collected was $6400.00. How many adult and child tickets were sold at the game?
August 18, 2014

English
Hi, I need help with MLA citing. This is just an example paragraph but please tell me if Im citing correctly : Tom was sad. Howard states," Tom leaned over the table with disappointment" (Howard 23).
July 29, 2014

Math
How do I graph a slope of 2/3 passing through the point of (-3,-4). Please help. I was given this answer, but I am unsure if it is correct **Since the slope is 2/3, go right up 3 and up 2 and plot another point.
July 28, 2014

Physics -- check answer please
correct
July 28, 2014

Math
How do I write an equation for (-3,-8) that has a slope of -2? So far this is what I came up with. y=mx+b m=-2 y=-2x+b -8=-2x-3
July 28, 2014

Math
Find the slope of 8x+4y=7 in parallel and perpendicular lines. Please help me figure this out? Still need help
July 28, 2014

Math
Find the slope of 8x+4y=7 in parallel and perpendicular lines. Please help me figure this out?
July 28, 2014

Math
How do I find the slope of the line in simple form? 4x+5y=3
July 28, 2014

Math
I wanted to see if I was solving this problem correctly. A line passes through the point (-3,-8)and has a slope of -2.Write an equation for this line. y=mx+b m=-2 y=-2x+b -8=-2(-3)+b
July 28, 2014

Math
How do I graph a slope of 2/3 passing through the point of (-3,-4). Please help
July 28, 2014

Math
How do I find the points, so that O can graph it. y=1/4x+4
July 27, 2014

Calculus
For f(x)=2(x+5)^3 +7 Find and classify the extreme values, determine where the function is increasing and decreasing, where it is concave up and concave down, and any points of inflection. I understand this is using the first and second derivative tests, but I can't find ...
July 22, 2014

calculus
Find a point c satisfying the conclusion of the Mean Value Theorem for the function f(x)= x^1/3 on the interval [1,8] I got f'(c)= 1/7 but am not sure where to go from there.
July 22, 2014

Calc
A cup of coffee at 90 degrees celsius is put into a 30 degree celsius room when t =0 . The coffee's temperature, f (t ) , is changing at a rate given by f '(t )=-8(0 .8) t degrees celsius per minute, where t is in minutes. Estimate the coffee's temperature when t =...
July 21, 2014

Calc
Nevermind! Solved it. Sorry guys. :)
July 21, 2014

Calc
t 0 5 10 r(t)0 90 0 A shop is open 9 AM - 7 PM. The function r(t), gives the rate at which customers arrive (in people/hour) at time t, where t measures time in hours since 9 AM. Suppose that the salespeople can serve customers at a rate of 75 people per hour. At 4 hrs after ...
July 21, 2014

Calc
q 0 125 250 375 500 625 750 C'(q) 27 35 41 45 43 46 51 Give fixed cost = 8800 and cost of producing 250 units is 17425, how much would the total cost increase if production were increased one unit, to 251 units?
July 21, 2014

History
Why should Uncle Toms Cabin be a part of the US History curriculum? Please explain!
July 19, 2014

History
Can you please tell me what chapters you found that information from so I can state it?
July 19, 2014

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