# Posts by emily

Total # Posts: 3,100

Math
Susie has eight pieces of string. Three pieces are 7.8 inches long, and five pieces are 9.2 inches long. How many inches of strength does Susie have altogether?

Math
Susie has eight pieces of string. Each string measures 6.5 inches long. How many inches of string does Susie have altogether

Calculus
A solid is formed by adjoining two hemispheres to the ends of a right circular cylinder. An industrial tank of this shape must have a volume of 1600 cubic feet. The hemispherical ends cost twice as much per square foot of surface area as the sides. Find the dimensions that ...

Calculus
A solid is formed by adjoining two hemispheres to the ends of a right circular cylinder. An industrial tank of this shape must have a volume of 1600 cubic feet. The hemispherical ends cost twice as much per square foot of surface area as the sides. Find the dimensions that ...

Calc
Find the length and width of a rectangle that has the given area and a minimum perimeter. Area: 50 square feet

Calculus
Find the particular solution that satisfies the differential equation and the initial conditions. f''(x) = x^2 f'(0) = 8, f(o)=4 f'(t) 10t - 12t^3, f(3) =2

Calc
A baseball is thrown upwards from a height of 2 meters with an initial velocity of 10 meters per second. Use the fact that -9.8 meters per second squared is constant acceleration due to gravity to answer the following: The maximum height of the ball The time it takes for the ...

Math
10, \$1.50 wrenches 10, 2.50 wrenches 5, \$4.00 wrenches 6, 3.00 wrenches

Health and Physical Education
weight to height

Maths
Work out the area of an equilateral triangle, with side lengths a, in sure form.

physics
A uniform vertical glass tube open at the lower end and sealed at the lower end is lowered into sea water thus trappung the air int he tube . It is observed that when the tube is submerged to a depth 10 meters the sea water has entered the lower half of the tube . To what ...

Calc
Find the particular solution that satisfies the differential equation and the initial condition. f '(s) = 10s − 4s3, f(3) = 7 & f ''(x) = 6, f '(2) = 14, f(2) = 19

Math
How many times greater is the 8 in the hundreds place then the 8 in the ones place explain your answer

geometry
well if you're going to be rude... you might as well get off this site.

Math
Evaluate 2n up3 -3b, if n=3 and b=1. 1.8 2.9 3.15 4.21 5.33

Math
If 9 apples cost \$8.1 how much would 5 apples cost

Economics
Consider the following simplified economy described by a Cobb-Douglas production function with three factors of production: “K” is physical capital (the number of machines), “L” is labor (the number of workers), and “H” is human capital (the ...

Spanish
which word fits the sentance best A horse is called a ______________. A frog is called a ______________. A school is called a _____________. A kangaroo is called a _____________.

Math
Ramon planted 3 rows of seeds. He put 8 seeds in each row. Each row of seeds were 42 inches long. How far apart did Ramon plant the seeds

Pre-Calc
I know its supposed to be 1000 feet, but I just don't know how to get there. Any help would be great! Thanks so much:)

Pre-Calc
After release at ground level, a balloon rises 100 feet in 30 seconds. During each succeeding 30 seconds, it rises 9/10 as far as it did in the preceding 30 seconds. What is its maximum altitude above ground level?

math
look im not trying to be rude but the only reason everybody come on this site is to get answers so if you don't mind could you just give me the answers plz

math
Choose the symbol that completes the statement. 3/4_-5/6 a.< b.> c.= -1 3/4_3/4 a.< b.> c.= 2 3/4_2 4/6 a.< b.> c.= please help me can you give me the answers plz

Pre calc
A local salesman receives a base salary of \$575 monthly. If his total sales receipts for the month exceed \$1800, he also receives a commission of 11% on the portion of sales over \$1800. How much would he have to sell in a month if he wants to have a monthly income of \$2200?

Chemistry
What would be the wavelength of a 50-gram golf ball traveling at 40 meters/second? Is this large enough to be observable?

Science
What conflicts between humans and robots might occur in the future? Plzz Help!

Astronomy
Suppose we detect red photons at 674 nanometers emitted by electrons dropping from the n = 3 to n = 2 orbital in hydrogen. The hydrogen is in an interstellar cloud at 5,000 K. If the cloud were heated to 10,000 K, what would be the wavelength of the photons emitted by the ...

Math
thxs for not giving me such a hard time

Math
you give everbody else the answer the answer why cant u now please just give me the answer

Math
can u just do the other ones

Math
okay look I don't understand it can u just give me the answer plz and then ill work them out about how I got them

Math
I understand it I just need help please help me im a connexus studentso just please help me plz if u can

Math
1.which symbol completes the statement 3\8 - 1\4 a.> b.< c.= 2.which symbol completes the statement 5\8 - 11\16 a.> b.< c.= 3.which symbol completes the statement 4\6 - 6\9 a.> b.< c.= 4.order the following fractions from least to greatest 3\8,3\4,5\16,1\2. ...

Algebra
Two cars are traveling at 40 and 50 miles per hour, respectively. If the second car starts out 5 miles behind the first car. How long will it take the second car to overtake the first car?

math
A comparision Den

Math
The diameter of my trundle wheel is 50cm. I use it to measure the length of the school park. It rotates 87 times. What is the length of the car park, to the nearest metre?

science
How do I make an acrostic poem for reactants?

american government
4 is c, wtf is wrong with yall? who cares if leslie tries or not. leave her alone, you're all dumb pieces of sh*t. especially ms sue

Calculus
Find the set of points that the following function is continuous at them . f(x)= { (2x+1)/(x+3) if x<0 (√(x+4)-2)/2x^2-3xx if x>0 -1/3 if x=0

Calculus
Find all the values of a and b in such a way that f is continuous function on its domain. f(x)= { (√x+a)+1 if -a ≤x ≤ 0 2x^2+3 if 0 ≤ x ≤ 1 (x+b)^2+1 if x>1

was not in class bio/ math
Preparing a Solution: A. Calculate the amount of methylene blue chloride (MW = 319.8 g/mol) needed to make 50 ml of a 10 mM stock solution. (Show calculations below) B. If you wanted to then dilute the solution from Part A to a final concentration of 0.1mM (in 50 ml total ...

math
translate the following sentence into an equation: The product of 9 and four less than n is 27 is is 9(n-4)=27 or 9n-4 = 27

Chemistry
Do you think the copper and zinc underwent a physical change or a chemical change?

Algebra 1
you have \$50 in your bank account and you deposit \$20 per week. Write an equation for the total amount of money you have in your account after x weeks.

Math
CLIMATOLOGIST Each year a tree is alive,it adds a layer of growth,called a tree ring,between its core and its bark. A climatologist measures the width of tree rings of a particular tree for different years: YEAR: 1900:1910:1920:1930:1940 Width of ring:14/25:29/50:53/100:13/20:...

Texas History
Both answers is wrong it's C if you want to be correct just pick it it will be right becauseI chose D and it said it was wrong as well with A and B.

English
Revise the following sentence so that ACTIONS name KEY VERBS. 1. Our discussion was lively and fun

Health
Which of the answer is correct

Social studies (Ms.Sue are these correct?)
How did French respond when the colonies defeated the British in Saratoga in the revolutionary war Is it they formed an alliance with Germany or they were encourag d to support the patriot effort?

chemistry
A major component of gasoline is octane C8H18. When octane is burned in air, it chemically reacts with oxygen gas O2 to produce carbon dioxide CO2 and water H2O. What mass of octane is consumed by the reaction of 8.8g of oxygen gas? Round your answer to 2 significant digits.

Math
composite number: positive integer that isn't a prime number Less than 10 + greater than 6 + even: 8 - Factors: 1,2,4,8 -- composite Answer:8

calc
a parallelogram has an area of 150 cm^2. the side lengths are 80 cm and 40 cm what are the measures of the angles

calculus
A door is opened by pushing inward explain in terms of torque why this is most easily accomplished when pushing at right angles to the door as far as possible from the hinge side of the door?

calc
a wrench is rotated with torque of magnitude 175 N (M). the force is applied 45 cm from the pivot point at an angle of 48 degrees. what is the magnitude of the force, to one decimal place?

calc
Would k(a-b) x (a x c) -a +( b x c) be a scaler, vector or meaningless? (these are all vectors besides k)?

Math
Thank yoU!

Math
Mr.Adams had a coin collection including only nickels, dimes, and quarters He had twice as many dimes as nickels and half as many quarters as he had nickels. If the total face value of his collection was \$300.00, how many quarters did the collection contain? A) 75 B) 100 C) ...

Calc.
Determine the value and value for each of the following: a) 2(3,y )-5(x,2)= (6,-4 )

Calc.
Find the angle between the vectors ⃗⃗u (-1,4,2 ) and ⃗v (-2,5,1 )

Sciencr
Why is a cool basement damp, in terms of humidity? I know that when you increase temperature and relative humidity decreases but I don't get how this fits? It's a closed environment so maybe there is condensation?

algebra
Yes it can be whatever you want between that given range. For example, if the slope was -0.2, (or -1/5) then, your line would go down from left to right (because it's negative) and move down 1 every time you move 5 to the right (m= rise/run) Hope that helps!

Math
Marie traveled to work (7km) in 25 minutes. What was her speed? I got 16.8km/h but my teacher said it's 28km/h and I have no idea how he got that. Also, how do you calculate average speed when there's more than one speed? (this is just for the next question)

math
First, I would put all the times to one unit. (I'm going to use minutes because I don't like working with decimals.) 1 hour: 60 minutes 1 day: 60 minutes times 24 (hours in a day) = 1440 minutes Now set up proportions: 150 people/1 minute = x people/60 minutes cross ...

language arts
His answer are right now what about 10 11 and 12?

algebra
a math exam is marked out of 120. draw a conversion graph to change the following marks to percentages. a_80 b_110 c_54 d_72

algebra
long-distance calls from New York to Harare are priced at 85 cents/min off peak and \$1.20/min at peak times. a_ draw, on the same exes, conversion graphs for the two different rates. b_ from your graph estimate the cost of an 8 minute call made off peak. c_ estimate the cost ...

algebra
long-distance calls from new york to harare are priced at 85 cents/min off peak and \$1.20/min at peak times. a_ draw, on the same axes conversion graphs for the two different rates. b_ from your graph estimate the cost of an 8 minute call made off peak. c_ estimate the cost of...

Math
I got 3B on the last scale

Calculus
I should probably specify that I got the area by integrating y^(-1/2) - (-y^(-1/2)) with my calculator on the interval [1,3] Sorry!

Calculus
Find the area of the region bounded by the curves y = x^(-1/2), y = x^(–2), y = 1, and y = 3. a) (1/2)(3)^1/2 + (4/3) b) 2*(3)^1/2 - (8/3) c) (1/2)(3)^1/2 - (32/3) d) 2*(3)^1/2 - (32/3) e) (8/3) - 2*(3)^1/2 So one thing that is throwing me off on this question is that I ...

trigonometry
Verify that sec(θ)/csc(θ)-cot(θ) - sec(θ)/csc(θ)-cot(θ) = 2csc(θ) is an identity. can some help me through this? thank you!

trigonometry
25. simplify: sin^2 ø/1- cos ø please help? thank you!

Math
The answer is D, don't worry this is right. I wouldn't trick you.

Math(Reiny Please Help)
My question is very similar to this one, except they say that Lacy needs the area of the kennel to be 150ft^2. So what I did was take the known information above, where she can fence 40 feet. The I figured out what times what would equal 150 and add to get 40, (15*10) So since...

math
i don't have any work to show you... i don't get it

math
You want to cover a trapezoidal box with paper. You have a sheet of paper that is 1m by 500cm. What is the size box that can be made with minimal wastage? plz plz plz help me with this.. i don't understand how to do this

Algebra
You want to cover a trapezoidal box with paper. You have a sheet of paper that is 1m by 500cm. What is the size box that can be made with minimal wastage?

Maths
the total answer will be 437 +248 6 8 5

Maths
437 +248 do the math...

Maths
okay, and does the 4 at the bottom go under 3 and the 8 go under 7?

Maths
Does the 2 go under 4 or 3?

math
9. solve |4x + 3| = 9 + 2x and check for extraneous solutions. the first answer I got was: |4x +3| = 9 + 2x |4x| = 6 + 2x 2x = 6 x = 3 can someone help me find the other answer? thank you!

math
8. The half-life of a certain radioactive material is 71 hours. An initial amount of the material has a mass of 722 kg. Write an exponential function that models the decay of this material. Find how much radioactive material remains after 17 hours. Round your answer to the ...

math
6. The half-life of a certain radioactive material is 32 days. An initial amount of the material has a mass of 361 kg. Write an exponential function that models the decay of this material. Find how much radioactive material remains after 5 days. Round your answer to the ...

Math
A tank measures 30 can by 60cm by 50cm. What is the height of water in the tank when 60000 ml of water are poured into it?

math
O MY GOODNESS I UNDERSTAND NOW THANK YOU SO MUCH

math
14. Let f(x) = -­2x ­- 7 and g(x) = ­-4x + 3. Find (f o g)(-­5) A)23 B)-53 C)-9 D)3 please help!!

math
17. Let f(x) = x2 + 6 and g(x) = x+8/x . Find ( g o f)(­ -7) A)384/7 B)295/49 C)-57/7 D)63/55 could someone please help?

math
18. For the function f(x) = x2 ­ -12, find (f o f­-1)(4). A)4 B)10 C)6 D)0 help please?

Math
Yesterday kate and her cousin robert went out for a movie there they spent \$50 in total robert spent \$10 more than kate how much did kate spend?

Chemistry
how many grams of AlCl3 is produced if 15.5 grams of Al are reacted with excess Cl2 gas? 2Al + 3Cl2 > 2AlCl3

math
sorry, I meant A or B, because I am "sure" that there is a remainder from looking at the equation. I just needed someone to help go through the equation.

math
Divide -3x^3 - 2x^2 - x - 2 by x – 2. A. -3x2 - 8x - 17, R –36 B. -3x2 + 4x + 15, R 32 C. -3x2 + 4x + 15 D. -3x2 - 8x - 17 I'm sure it's either B or C, can someone help?

math
Is the relation a function? 4 -> 8 7 -> 11 10 -> 14 12 -> 10 A. yes B. no

Geometric Sequence
The colour of some clothing fades overtime when washed. Suppose a pair of jeansfades by 5% with each washing. To the nearest wash, how many washes would it take so that only 25% of the original colour remains in the jeans? 1. first term = 2. r = 3. tn = 4. n = I know that tn ...

math
The distance between town A and town B was 210 km. At 9:20 pm, a bus set off from town A to town B and a car from town B to town A. The average speed of the bus was 60 km/h, and the average speed of the car was 80 km/h. a) Calculate the time at which the car passed the bus. b...

math
Ava made 100 paper cranes, and Brittany made 3/4 of paper cranes Ava made. Ava gave 9/20 of her paper cranes to Brittany. Then, Brittany gave 1/4 of her paper cranes to Ava. How many more cranes did Brittany have than Ava in the end?

Physics
a cube slides down a frictionless incline as shown and inelastically strikes a cube at the battom of the incline that's 1/2 (one-half) it's mass. The coeff. of restitution between the two masses is 0.7. If incline is 30 cm high and table is 90cm off floor, at what ...

physics
a cube slides down a frictionless incline as shown and inelastically strikes a cube at the battom of the incline that's 1/2 (one-half) it's mass. The coeff. of restitution between the two masses is 0.7. If incline is 30 cm high and table is 90cm off floor, at what ...

Math
A person plans to invest a total of \$9000 in an account that pays 3% annual interest and another account which pays 8% annual interest. How much should be invested in each account so that the total interest for one year will be \$580.