04/20/18

Express sin (750°) as a function of an angle in Quadrant I
A. sin(30°)   B. -sin (30°)   C. sin(15°)   D. -sin (15°)
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04/20/18

How Tall Is The Tallest Building In The United States
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04/20/18

T(x)=ax^2+bx+c,T(0)=-4,T(1)=-2,T(2)=6
How do I find a, b and c?
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04/19/18

Math: Half-Life
The Lualailua Hills Quadrangle of the East Maui volcano on the island of Maui in Hawaii is no loner active. To find out the date of the last eruption scientists conducted a chemical analysis of... more
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04/19/18

Logxlog18 (√2+√8)=1/3. Find the value of 1000x
X and 18 are bases
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04/18/18

It can be shown that the polar curve r=asin(θ)+bcos(θ), where ab≠0, is a circle. Find the center (in Cartesian coordinates) and radius
It can be shown that the polar curve r=asin(θ)+bcos(θ), where ab≠0, is a circle. Find the center (in Cartesian coordinates) and radius of this circle in terms of a and b.x-coordinate of center:... more
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04/17/18

Find all real numbers for which the rational expression is undefined.
6x − 15 _______ x^2 − 49
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04/17/18

What is the formula for finding the area of a sector?
I can’t remember the formula and I can’t find it in my notes   
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04/17/18

Solving in terms of a
If tantheta is an acute and tantheta = a, express costheta, sintheta in terms of a   My solution was:   sintheta/costheta = tantheta therefore, sintheta/costheta = a   hence, sintheta =... more
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04/16/18

Why r = θ cos θ is called the Garfield curve?
Why? Is that because of the shape? May I know more explanation why  r = θ cos θ is called the Garfield curve?
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04/16/18

R varies directly as x2 and inversely as t when when and Find R when and
Please i need help now
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04/16/18

Cos(3theta/5, plus 11°) = sin(7theta/10, plus 40°) find solution
..................................
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Dog

04/16/18

Y varies directly as x, and y=4 when x=8. Find y when x=10
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04/16/18

write sin 72 degrees in terms of cosine
how to you turn it into cosine  
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04/15/18

Solve for all angles between 0 and 360: 2cos^2(x)+cos(X)=1
Solve for all angles between 0 and 360: 2cos^2(x)+cos(X)=1
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04/15/18

Help me Find an equation of a plane
With respect to the origin O, the lines l and m have vector equations r = 2i + k + λ(i − j + 2k) and r = 2j + 6k + µ(i + 2j − 2k) respectively. Find the equation of the plane which is parallel to l... more
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04/14/18

Limits, Which of the following are true statements about this function?
Let f(x) = 3x^2 - 5, x≤ 1  AND 6x+2, x>1 Which of the following are true statements about this function? Which are false? I. lim x→1 f(x) exists II. lim x→1 f'(x) exists III. f'(1) exists
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04/14/18

Reimann Sum approximation
The expression 1/30 (sin 1/30 + sin 2/30 + sin 3/30.....+ sin 30/30) is a Reimann sum approximation for...   a) ∫sin (x/30) dx from 0 to 1 b) ∫sin x dx from 0 to 1 c) 1/30 ∫sin (x/30) dx from 0... more
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04/14/18

tangent line Calc AB
At what point on the graph of y=(1/2)x^2 - (3/2) is the tangent line parallel to the line 4x-8y=5?
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04/13/18

How much of a 9 gram sample of gold -194 would remain after 4 days? If the half life of a gram of gold -194 is approximately 1.6 days
This is a college level question, and I need some help. I don't want the answer, just the best way to try and get the correct answer. 
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04/12/18

optomization
A manufacture has been selling 1350 television sets a week at $510 each. A market survey indicates that for each $10 rebate offered to a buyer, the number of sets sold will increase by 100 per... more
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04/11/18

Quadratic functions
A farmer wants to build a pen against a side of mountain. He has 200 feet of fencing. what is the maximum area he can enclose? What are the dimensions of his own of maximum area?
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04/11/18

Not getting the correct answer
y = 0.343t2+ 11.74t+5.17 where t = Time of day (hour) and y = Temperature (in degrees)The times are the hours since midnight. For instance, 7 means 7 am, and 13 means 1 pm. (a)Using algebraic... more
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04/10/18

How long would it take in years, for $5500 to grow to $9000 at 7.5% annual interest compounded monthly
How long in years
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04/10/18

Is this sine, cosine, or tangent?
There’s this right triangle that has a 90 degree angle. I don’t know what the opposite is because it’s opposite is the hypothenuse and there is no hypothenuse on the problem.
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