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A new potential heart medicine, code-named X-281, is being tested by a pharmaceutical company, Pharma-pill. As a research technician at Pharma-pill, you are told that X-281 is a monoprotic weak acid, but because of security concerns, the actual chemical f...

16 years ago

Ok, i did this maths trigo question, that says sinx-cos=2/3. I squared it on both sides to get sin2x=5/9 and did the sum. In the end i got two solutions, 16.9 and 73.1. However, when i substituted the answers back into the equation, only one of the 2 answ...

16 years ago

Ok, i've tried this sum a million times and i cant get an answer. Somebody please check my workings and tell me what i did wrong! Thanks! Given 4≤y≤6, find the value of y for which 2cos((2y)/3) + √3 = 0 Here's my workings: 2.666≤(2y/3)≤4 2cos(2y/3)=-√3 co...

16 years ago

Ok, i've tried this question, and it brings me to no answers. Please help! Prove the following: secY(1+tanY)=6cosecY my workings: LeftHandSide: secY + tanY/cosY = 1/cosY + sinY/cos^2Y =(cosY+sinY)/cos^2Y = ??? How should i attempt this question?? Am i eve...

16 years ago

I did this maths question and got the answer -ln0.1, but the correct answer is ln10. I checked the numericals using a calculator, to find that -ln0.1 is the same as ln10. How do i convert -ln0.1 to ln10?

16 years ago

Hey, i'd like to know what this means: Tropical monsoon forests are located "between 10° and 25°N and S of the equator". What does this mean? I know that the 25°N and S of equator means that region near the equator, but what is that "10°"?

16 years ago

Describe similarities between ice wedging and weathering caused by plant roots?

16 years ago

The first time you are caught plagiarizing, will the College let you away with it as long as you don't do it again?

15 years ago

The actual expenses for the most recent fiscal quarter were 121% of budgeted expenses. If the budgeted expenses were $76,570 then what were the actual expenses? (round to the nearest cent).

15 years ago

Agnessa receives an annual salary of $47,962.20 based on a 39-hour workweek. a) What is Agnessa's hourly rate of pay in a year with 26 biweekly paydays? Answer is $23.65 b) Using your hourly rate computed in part a), what would Agnessa's gross earnings be...

15 years ago

Write a short analysis of the use of researching in your future industry ¡V how do they gather or use research ie: types of projects, proposals, etc¡K „³There are no souls who never do research, because without research they can¡¦t gain knowledge. Researc...

15 years ago

A rope is used to pull a 3.57 kg block at constant speed 5.10 m along a horizontal floor. The force on the block from the rope is 6.82 N and is directed 15° above the horizontal. (a)What is the work done by the rope's force? (b) What is the increase in th...

15 years ago

Suppose that high-speed stroboscopic photographs show that the 200-g head of a golf club travels at 51 m/s just before it strikes a 50-g golf ball initially at rest on a tee. If the club head slows to at 36 m/s (in the same direction) after the collision,...

14 years ago

what is the average rate of change for the function g(x)=3x^2-4 over the interval (-1,3)?

14 years ago

calculate the number of grams of alcohol present in 1.70 L OF 75-Proof gin. The density of ethanol is 0.798 g/ml. Proof--> twice the % by volume of ethanol(C2H5OH) present.

14 years ago

a watch glass and filter paper weighing 41.060g was used to collect the CuSCN precipitate in this experiment. After drying, the precipitate, watch glass and filter paper weighed 42.525g. If the sample of alloy used for the analysis weighed 1.380g, what wa...

14 years ago

Two 8 cm long thin glass rods uniformly charged to +10 nC are placed side by side, 4.0 cm apart. What are the electric field strengths E1 to E3 at distances 1.0 cm, 2.0 cm, and 3.0 cm to the right of the rod on the left along the line connecting the midpo...

13 years ago

A 70 g ball moves 45m/s. If its speed is measured to an accuracy of 0.10% what is the minimum uncertainty in its position?

13 years ago

change the exponential expression to an equivalent expression involving a logarithm. 8.8=7^x please show work

13 years ago

What net torque is required to give a uniform 12-kg solid ball with a radius of 0.22m an angular acceleration of 12rad/s2 ?

11 years ago

Let f(x) = 2x and g(x) = √(x − 7). Find and simplify completely a.) f(3+h)−f(3)/ 8h b.) g ◦ f)(5)/ (f ◦ f)(3) for part 8 i have, 2^(3+h) - 2^3/8h = 8*2^h -8 / 8h. I'm having a brain fart but am i able to subtract 8 from 8 or is the 8*2^h seen as one value...

9 years ago

4^log16 (7) the base of the log is 16. 4 is being raised to the entire log16 (7). show all steps please!

9 years ago

Find the exact value of each expression, if it exists: the -1 are representing the inverse functions! (a) sin -1 (-√2/2) (b) cos−1 (−1) (c) sin( 􏰀sin−1 (π)􏰁) (d) cos−1􏰀(cos􏰀(−4π􏰁􏰁/ 3)) (e) tan−1 (tan(0.6)) (f) cos−1( 􏰀cos􏰀13π􏰁􏰁/12)) (g) tan( 􏰀sin−1 􏰀 (8 􏰁...

9 years ago

p(x)=x^3 -6x^2 +13x -10. find all the solutions to the equation p(x)=0. i am not allowed to use -b/2A

9 years ago

find all the real and complex zeros of the polynomial P(x)=x^4 -2x^3 -2x^2-2x-3

9 years ago

tan(θ + ϕ); cos(θ) = − 1/3 θ in Quadrant III, sin(ϕ) = 1/4 ϕ in Quadrant II evaluate the expression

9 years ago

solve the equation cos(x) + sin(x) = 1

9 years ago

solve the equation 1. cos(θ) − sin(θ) = 1 2.2 cos(θ) tan(θ) + tan(θ) = 1 + 2 cos(θ) 3. sin(θ) cos(3θ) + cos(θ) sin(3θ) = 0 4. sin(2θ) cos(θ) − cos(2θ) sin(θ) = 1/2 5. cos(2θ) + cos(θ) = 2 6. cos(2θ) + sin2(θ) = 0

9 years ago

What is the equation (in slope-intercept form) of the line that passes through (-3, -1) and has a slope of 3/5? A) y = 3/5x + 4/5 B) y = 3/5x - 4/5 C) y = -3/5x - 4/5

8 years ago

Find the domain and ranges of the following: f(x)=(2/3)x-3 f(x)=-3x+7 Thank you in advance, this helps me a lot because I really suck at finding domain/range and it's super late rn.

8 years ago

At the intersection of Texas Avenue and University Drive, a blue, subcompact car with mass 820 kg traveling east on University collides with a maroon pickup truck with mass 2000 kg that is traveling north on Texas and ran a red light. The two vehicles sti...

7 years ago

A wheel has an angular speed of 85 rev/s when it experiences a constant angular acceleration of 100 rev/s2 which causes it to spin FASTER. During this time the wheel completes 26 rev. Determine how long the wheel was experiencing this angular acceleration...

7 years ago

Water flows at 0.58 m/s through a pipe 11 cm in diameter when the pressure is 450,000 Pa. Determine the water velocity & the pressure in the pipe if it shrinks down to 5 cm in diameter. You can assume that the pipe is horizontal & ρwater = 1000 kg/m3.

7 years ago

A new potential heart medicine, code-named X-281, is being tested by a pharmaceutical company, Pharma-pill. As a research technician at Pharma-pill, you are told that X-281 is a monoprotic weak acid, but because of security concerns, the actual chemical f...

16 years ago

sorry, i found my mistake already.

16 years ago

i got it!!! but im not sure if its right. plz correct if wrong!!!thnx. a) 47,962.20/26=1844.70/2(39)=$23.65/hrs b) 23.65*39+1.5*23.65*10=$1,277.10

15 years ago

$63,280.99

15 years ago

Please guys we really need the correct answers

10 years ago

D is the answer

9 years ago

for part a i messed up. my final result i got is 1/8(2^(3+h) -8)h

9 years ago