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a particle moves along a line so that at time t where 0<=t<=pi, its position is given by s(t)=-4sint-t/2+10. What is the
1. 3 answers
2. 177 views
what is the minimum value of f(x)=3xe^x
1. 1 answer
2. 133 views
Given that f(-0.5)=2 and f'(-0.5)=4, using tangent line approximation you would estimate f(0) to be:A.4 B.-3 C.0 D.1 E.-2
1. 1 answer
2. 126 views
Let P and Q be n × n permutation matrices and v ∈ R^n a vector. Under whatconditions does the equation P v = Qv imply that P
1. 0 answers
2. 114 views
In each case, find a quadratic function whose graph passes through the given points. (If there is no solution, enter no
1. 1 answer
2. 528 views
Steve and Elsie are camping in the desert, but have decided to part ways. Steve heads north, at 6 AM, and walks steadily at 3
1. 3 answers
2. 833 views
Suppose two cars depart from a four-way intersection at the same time, one heading north and the other heading west. The car
1. 1 answer
2. 752 views
Two planes flying opposite directions (north and south) pass each other 80 miles apart at the same altitude. The northbound
1. 4 answers
2. 707 views
Two planes flying opposite directions (north and south) pass each other 80 miles apart at the same altitude. The northbound
1. 1 answer
2. 378 views
Ann and Bob start moving from the same location. Bob starts moving 3 seconds after Ann. Ann moves East at a speed of 6 feet/sec.
1. 1 answer
2. 429 views
Two planes flying opposite directions (north and south) pass each other 80 miles apart at the same altitude. The northbound
1. 1 answer
2. 443 views
Two planes flying opposite directions (north and south) pass each other 80 miles apart at the same altitude. The northbound
1. 1 answer
2. 766 views
Two planes flying opposite directions (north and south) pass each other 80 miles apart at the same altitude. The northbound
1. 1 answer
2. 834 views
The density of lead is 11.34 g/cm3 and the density of aluminum is 2.69 g/cm3. Find the radius of lead and aluminum spheres each
1. 1 answer
2. 622 views
Sarah can bicycle a loop around the north part of Lake Washington in 2 hours and 50 minutes. If she could increase her average
1. 2 answers
2. 406 views
Why were Central American civilizations more developed than North or South America?
1. 1 answer
2. 476 views
What is [Al(H2 O)5(OH)2+] in a 0.15-M solution of Al(NO3)3 that contains enough of the strong acid HNO3 to bring [H3O+] to 0.10
1. 1 answer
2. 3,122 views
1. 2(y + 1) for y = 2 (1 point)6 5 7 8 2. start fraction lower d plus lower g over lower h end fraction for d = 29, g = 16, and
1. 28 answers
2. 5,002 views
I need to get which property of multi-plication this person did. the problem is 2(3.45+5.7)=.402 but I got 18.3. HOW?!??!?! I
1. 1 answer
2. 459 views
A drug is administered every 6 hours. The kidneys eliminate 55% of the drug over that period. The initial dose is 210 mg.
1. 0 answers
2. 499 views
Farmer Brown planted corn and wheat on his 450 acres of land. The cost of planting and harvesting corn is $280.00 per acre. The
1. 1 answer
2. 642 views
Using the equation, y=-2/3x-2, find the equation of the line that is parallel and has the ordered pair (3,3). Write the answer
1. 1 answer
2. 510 views
I am trying to work a problem to find flowrate, and a time to reach equilibrium. It sets up like this: I have a tank with a
1. 0 answers
2. 575 views
The science club sold 24 T-shirts last week and 18 T-shirts this week. What is the percentage of decrease in the number of
1. 5 answers
2. 2,052 views
You have 4L feet of fence to make a rectangular vegetable garden alongside the wall of your house, where L is a positive
1. 3 answers
2. 3,140 views
A family wants to fence a rectangular play area alongside the wall of their house. The wall of their house bounds one side of
1. 1 answer
2. 1,775 views
A student mixes 5 mL of 2.00 x 10^-3 M Fe(NO3)3 with 5 mL 2.00 x 10 ^-3 M KSCN. They find that in the equilibrium mixture
1. 1 answer
2. 1,419 views
Solve for x:(385)^2 - x^2 = (760.35)^2 - (637.4 - x)^2
1. 1 answer
2. 368 views
A truck carries cartons packed with boxes. The boxes were 22 inches long on each edge. If 4 boxes completely fill the carton,
1. 1 answer
2. 615 views
There are 5 numbers in a set of data. There are no repeated numbers. Which measure of data must represent a number in the set
1. 5 answers
2. 1,545 views
A circle has the circumference 28.26cm. What is the area of the circle? use PI as 3.14.i am confused in how to even solve with
1. 2 answers
2. 819 views
If sec x = -3, 0 < x < pi, find cot x.
1. 1 answer
2. 832 views
A sprinter must average 24.0 mi/h to win a 100-m dash in 9.30 s. What is his wavelength at this speed if his mass is 84.5 kg?
1. 2 answers
2. 4,007 views
Traumatic brain injury such as concussion results when the head undergoes a very large acceleration. Generally, an acceleration
1. 2 answers
2. 903 views
A 54.0-g Super Ball traveling at 29.0 m/s bounces off a brick wall and rebounds at 18.0 m/s. A high-speed camera records this
1. 1 answer
2. 1,282 views
A board is 84 cm long. How many meters long is this board?
1. 1 answer
2. 513 views
The displacement, force, velocity, and acceleration vectors’ components are given. Calculate the magnitude and direction of
1. 1 answer
2. 573 views
Chloroform CHCl is an important solvent. It is produced by a reaction between methane and chlorine. How many g CH4 are needed to
1. 1 answer
2. 998 views
2 SO2 (g) + O2 (g) → 2 SO3↑Assuming STP, how many grams of oxygen are needed to produce 19.8 liters of SO3?
1. 2 answers
2. 3,366 views
Eureka is 16 years younger than Renton. In 3 years Renton will be twice as old as Eureka. How old are they now?Eureka's Age:
1. 2 answers
2. 987 views
Evaluate the integral of ∫(2x^2 −3)^2 dx
1. 1 answer
2. 424 views
For the function f(x) = 3x2 − 5x − 7.Find the rate of change of f(x) at x = 3
1. 1 answer
2. 549 views
The marginal cost for a product is given by dC/dq = 1000/sqrt3q+20, in hundreds of dollars, where q is given in thousands of
1. 0 answers
2. 764 views
Fuel is flowing into a storage tank which can be filled to a depth of 6 metres.When the fuel started flowing the tank was
1. 1 answer
2. 610 views
Fuel is flowing into a storage tank which can be filled to a depth of 6 metres.When the fuel started flowing the tank was
1. 0 answers
2. 1,043 views
The marginal cost for a product is given by dC/dq = 1000/sqrt3q+20, in hundreds of dollars, where q is given in thousands of
1. 0 answers
2. 496 views
The acceleration due to gravity near the surface of Mars is 3.72ms^-2 . Arock is thrown straight up from the surface with an
1. 2 answers
2. 2,132 views
Given f(x)=1+2cos x , find the area under the curve y=f(x) betweenx = pi/2 and 2pi/3.
1. 1 answer
2. 397 views
A cone is inscribed in a sphere of radius a, centred at the origin. Theheight of the cone is x and the radius of the base of the
1. 0 answers
2. 1,268 views
A function is implicitly definedby x^2 - 4y^2 = 9 Find the equation of the tangent to the function at x = 1
1. 1 answer
2. 571 views
Given the function f (x) = 3cos x for the interval 0 < x < 2 sketch the graph of the function
1. 1 answer
2. 709 views
Given the function f (x) = 3cos x for the interval 0 < x < 2pi, determine the concavity of the function, between the critical
1. 1 answer
2. 632 views
Use Newton’s method to approximate the root of x^2 + 4x + 2 = 0 between x = -4and x = -3 .
1. 2 answers
2. 499 views
A ladder 10 m long rests on horizontal ground and leans against avertical wall. The foot of the ladder is pulled away from the
1. 2 answers
2. 6,172 views
Please help! this is my worst subject!How did land-owning companies take advantage of the Homestead Act?
1. 1 answer
2. 1,093 views
How do you calculate the slope and intercept of a regression?
1. 1 answer
2. 406 views
What is the scientific notation for 15 x 10 to the 5th?
1. 1 answer
2. 407 views
A farmer with 700 ft of fencing wants to enclose a rectangular area and then divide it into four pens with fencing parallel to
1. 4 answers
2. 2,465 views
what nutrient works as a muscle builder and body repair worker
1. 0 answers
2. 382 views
What role does DNA play in helicase?
1. 0 answers
2. 402 views
Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis.y=0, y=x(3-x)
1. 1 answer
2. 688 views
if 5g of CH3COOH reacts how many moles of CO2 will be produced?
1. 1 answer
2. 413 views
What volume (in mL)of 0.0550 M calcium hydroxide is required to neutralize 38.00 mL of 0.0700 M nitric acid?
1. 1 answer
2. 650 views
What volume (in mL) of the base will react completely with 30.00 mL of 0.550 M HCl?0.0500 M Ba(OH)2
1. 1 answer
2. 500 views
Case Eastern Junior College awarded 26 varsity letters increw, 15 in swimming, and 16 in soccer. If awards went to 46 students
1. 1 answer
2. 521 views
A force of 23.0 N is required to start a 3.1 kg box moving across a horizontal concrete floor.(a) What is the coefficient of
1. 2 answers
2. 844 views
What is phmpoc?
1. 2 answers
2. 453 views
Kirsten is in her lab, and reacts two unknown gases (A(g) and B(g)) to get nitrogen dioxide (NO2). Using her data, she is able
1. 1 answer
2. 569 views
I'm not doing so well in ap chemistry. i think i'm not studying the right way. can anyone suggest how i can raise my grade? i do
1. 2 answers
2. 741 views
If your house is heated by a furnace that blows hot air into the rooms, you are depending on the process of ______ to stay warm.
1. 3 answers
2. 657 views
Hi everyone,I've got a career-related question. A few weeks ago, our class took a "Career Cruising" quiz, which is meant to help
1. 0 answers
2. 825 views
Each element has a different set of energy levels. Use this fact to "explain" whay the colour of the light emitted by an element
1. 0 answers
2. 669 views
A drop of oil (volume 0.05cm3) is released from a medicine dropper on to the calm surface of a pond where it spreads out to
1. 0 answers
2. 651 views
In the formula how do you know to divide by six?
1. 0 answers
2. 385 views

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