02/15/21

Question is in the description. it was too long to put in the title.
Using a double-angle or half-angle formula to simplify the given expressions.(a) If cos2(23∘)−sin2(23∘)=cos(A∘) then A=    degrees(b) If 2sin(7x)cos(7x)=sin(B∘) thenB=    .
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02/15/21

Precalculus question(?)
If sin(x)=7/9 and x is in quadrant I, find the exact value of sin(2x), cos(2x), and tan(2x) algebraically without solving for x.I dont even know where to start for this one.
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02/14/21

geometry question below
Line AB is rotated 120° clockwise about B. Then Line AB is rotated 45° counterclockwise about A. What is the image of A as a composition of transformations?choose one:A.... more
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02/14/21

If g(h(x)))= cube root of (5x^2+1), please find non-identity functions g and h.

A simplified answer that's easy for a thirteen-year-old to understand, if you can please. :)
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02/14/21

how do I write a Inverse variation equation with for Example Y=1 and x=2
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02/14/21

how do i write an direct variation equation using coordinates like (5,1) for example

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02/14/21

Find two points on the graph of the parabola other than the vertex and x-intercepts.
Find two points on the graph of the parabola other than the vertex and x-intercepts.p(x)=−x^2+8x−12
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02/13/21

Trignometric functions
solve for x
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02/12/21

Find the speed of the plane.
Mattie Evans drove 140 miles in the same amount of time that it took a turbopropeller plane to travel 440 miles. The speed of the plane was 150 mph faster than the speed of the car.
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02/12/21

The area of a rectangle is 72 square units one side of a rectangle is 9 units long what is them in the missing Dimension how do you get your answer
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02/12/21

Uncle Ralph offers you a challenge. He says that if you can tell him how many coins of each type are in his pocket, then you can have the money.

He says that if you can tell him how many coins of each type are in his pocket, then you can have the money.-He has 17 coins in his pocket- He has only dimes and quarters- The coins are worth... more
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02/12/21

The sum of the angle measures of a polygon with n sides is 3960 . Find n
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02/12/21

math precalculus 12
The half-life of a radio active substance is 5 weeks. Originally there is 175g of this substance. How long before only 30g remains?
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02/12/21

let (-2,6) Fairpoint on the terminal side of an angle θ in standard position. find the exact values of the trigonometric functions of θ
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02/12/21

PRE CALC AB - A new app was downloaded 175 times in its first week. Since then, the number of downloads increased by 16.5% each week.
A new app was downloaded 175 times in its first week. Since then, the number of downloads increased by 16.5% each week. a) Write a continuous exponential growth model to approximate the number of... more
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02/12/21

Trigonometry question

If csc ( x ) = 2 , for (90°< x < 180°), then sin ( x/2)= ? cos ( x/2 ) = ? tan ( x 2 ) = ?
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02/12/21

cos(θ) − sin(θ) write the given sum as a product. You may need to use an Even/Odd or Cofunction Identity.
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02/12/21

Trigonometry question

Find sin(u/2) of sin u=0.787 and u is in quad 1(assume that 0<u<2pie) sin(u/2)=?
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02/12/21

Let f(x) = 4x^5/4 + 2x^3/2 + 9x. Find the following.

f '(16)Please help me solve it
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02/12/21

Write an equation for a polynomial function in factored form, with real coefficients, that has a double root at x = 3 and roots at x = 1 + 4i and x = −1 and passes through (0, 17).
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02/11/21

How does an earthquake of magnitude 7.6 compare in intensity with an earthquake of magnitude of 3.5 on the Richter​ scale?
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02/11/21

Math elementary

Of the trees in a farm , 3/4 are apple trees of the apple trees 2/3 produce red apple trees what is the fraction of the trees produce red apples?
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02/11/21

can you give me the answer?
Aunt Trudy is pricing cakes for a baby shower she is throwing. She wants one large cake shaped like a duckling and also some cupcakes in pastel colors. Newberg Bakery charges $1 for each cupcake,... more
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02/11/21

(cotx)/(cosx)=cscx Verify
Is an Identity, but verify
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02/11/21

Lee earned $240 in the first week of mowing laws; $350 in the second week; $460 in the third week. How much money was earned over the first 5 weeks? *
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