Answers created by Dean R.

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• The question is below?
  
• The question is below?
  
• A triangle has area #Delta# ... ?
  
• We study about trig.ratios of sum and diff. Of two angles but an obtuse angle can never have right triangle so how can we fix the ratios?
  
• When using the law of sines, why can the SSA case result in zero, one, or two triangles?
  
• CosecA -2cot2AcosA=?
  
• In an equilateral triangle, 3 coins of radii 1 unit are kept so that they touch each other and also the sides of the triangle. Then what is the area of the triangle?
  
• Find the number of non-negative integral solutions. [x/19]=[x/21] , here [] denotes greatest integer function. How do we solve this ?
  
• A triangle has corners at #(4 ,7 )#, #(3 ,4 )#, and #(8 ,9 )#. What is the area of the triangle's circumscribed circle?
  
• A triangle has sides with lengths: 16, 14, and 19. How do you find the area of the triangle using Heron's formula?
  
• A ship leaves a port on a bearing of 073° and sails 63km. The ship then changes course and sails a further 60km on a bearing of 110° where it anchors. When it anchors it is 95km from the port. Calculate the bearing of the ship from the port at this point?
  
• I roll a 6sided dice twice. What the propability to get the same number twice?
  
• How do you find domain and range of a quadratic function?
  
• Please Explain ?
  
• A ship leaves a port on a bearing of 073° and sails 63km. The ship then changes course and sails a further 60km on a bearing of 110° where it anchors. When it anchors it is 95km from the port. Calculate the bearing of the ship from the port at this point?
  
• How do you find the cube root of #-125/2(1+sqrt3i)#?
  
• Write standrd equation of the circle with the given properties? c(2,3)and radius is 4 units
  
• Determine the equation of the parabola that cuts x axis in points A(-7,0) and B(1/2,0)?
  
• Please solve Q 27 - 31. Q27. #a_n=na_{n-1}, a_1=1, a_3=?# Q28. Convergence region of #y = 1+x/2 + x^2/4 + ...# Q29. #sum_{r=1}^20( 3r+1)# Q30. Which is a field? #N, Z, Q, M_{2 times 2}# Q31, Inverse of #omega# in #{ 1, omega, omega^2 }#
  
• A circle has a center that falls on the line #y = 5/4x +4 # and passes through # ( 4 ,7 )# and #(2 ,5 )#. What is the equation of the circle?
  
• The world’s population is about #f(t)=6.91e^{0.011t}# where #t=0# is year 2010. Find #f(0),f'(0),f(14),f'(14)#?
  
• What is the relative rate of change?
  
• Cameron drew a pentagon with vertices at (1,1), (3,1), (4,3), (0,3), and (2,4). he wants to draw another pentagon that is similar, but not congruent, to the original. which method could he use to determine the vertices of the new pentagon?
  
• Which statement correctly identifies the negation and truth table of the statement? If two polygons are congruent, then they are similar.
  
• Radio signals travel at a rate of #3 × 10^8# meters per second. How many seconds will it take for a radio signal to travel from a satellite to the surface of the Earth if the satellite is orbiting at a height of #7.5 × 10^6# meters?
  
• Which definition can be used to help prove the theorem below? If a line is tangent to a circle, then it is perpendicular to the radius drawn to the point of tangency.
  
• The parametric equations of a curve are x=#t^2# and y=#3/t#. Points P and Q with parameters p and q respectively lie on the curve. (pls see below). ?
  
• How do you expand #(x^2+3)^6#?
  
• Volume of a sphere is given by V=4/3πr³ , where r is its radius . If radius changes by 1.2% , then find the change in the volume ?
  
• I need some help with some of my paragraph proofs.... can you help me??
  
• F(x) = 1/x ,f(f(f(f(f(f(x))))))=??
  
• What is the circle with center (5, -6) tangent to the y axis?
  
• Suppose the population of a certain bacteria in a laboratory sample is 100.if it doubles in the population every 5hrs,what is the qrow rate?how many bacteria will there be in 3 days?
  
• How do you solve #(c + 1) ^ { 2} - 4( c + 1) + 3= 0#?
  
• A curve is given by the parametric equations x=t,y=#1/t#. (pls see details below). ?
  
• Find the distance between the points (¼ , ½) and (5, 6) ???
  
• Can someone please tell me where each title goes? Please be specific. :)
  
• If energy is conserved why are we worried aout energy crisis?
  
• Why is it unwise to leave a water filled glass bottle in forest?
  
• Which of the following graphs represents the number of farmers' markets in the USA over time?
  
• The dashed triangle is the image of the solid triangle. The center of dilation is (6,6)(6,6). What is the scale factor used to create the dilation?
  
• How do you solve cos 2x − 2 sin2 x = 0 interval (−5, 5]?
  
• How many atoms of carbon has a young man has given to his bride to be if the engagement ring contains 0.5 carat diamond? There are 200mg in a cara.
  
• Find the equation of the lines tangent to the circle at point where x=3 x²+y²-14x+4y+33=0?
  
• I like these beautiful flowers. What is the noun in the sentence?
  
• How do you determine whether the function #p(x)=-4# has an inverse and if it does, how do you find the inverse function?
  
• How do you determine the two coterminal angle (one positive one negative) for the angle #-420^circ#?
  
• If the following lines are perpendicular to each other then λ equals : x-5/7=y-1/-5=z+2/1, x+2/λ=y+3/2=z+10/3 ?
  
• Trig identity help?
  
• Find the coordinates of the focus and the equation of the directrix for 2x²+5y=0?
  
• Supose that you need 2 Joules to expand a spring from its natural length of 30 cm to 42 cm: A)How much work its required to expand it from 35 to 40 cm? B)How long will expand from its natural length if a force of 30N is aplied to it?
  
• The owner of Snack Shack mixes cashews worth $5.75 a pound with peanuts worth $2.30 a pound to get a half-pound, mixed-nut bag worth $1.90, How much of each kind of nut is included in the mixed bag?
  
• Please explain the sine rule for a triangle? (Its derivation and explanation in short)
  
• How to Prove the identity?
  
• How do you find the area of a parallelogram?
  
• Suppose f(x) has zeros at x=-2,x=4, x=7 and a y-intercept of 1 In addition, f(x) has the following long-run behavior: as x--> ∞, y--> ∞. Find the formula for the polynomial f(x) which has the minimum possible degree?
  
• Give a possible formula of minimum degree for the polynomial h(x) in the graph below?
  
• Maggie earns $62,000 per year and has a net worth of $20,000. Samantha earns $96,000 and has a net worth of $15,000. Who is wealthier?
  
• Let x > 0, prove x^2 + 1 > lnx?
  
• Which is the correct answer?
  
• 50 men can compete a work in 28 days. They started the work together, but at the end of each 10 day, 10 men left the job. The work was completed in how many days?
  
• How would you translate "twenty five is one more than two times a number" into an equation?
  
• How I resolve this limit?
  
• How to write this equation in vertex form: #y=4x^2+7x#?
  
• Which is the correct answer?
  
• What happens if two straight lines intersect at the origin?
  
• If tan x = -3/4 and pi/2<x<pi find values of cos x and sin x?
  
• There are 35 athletes in a grade 10 gym class. 27 students play hockey and 10 play golf. what is the probability that a student chosen at random will play golf only?
  
• Prove that the two lines x+1/3=y+3/5=z+5/7 and x-2/1=y-4/4=z-6/7 are coplanar?
  
• Given #y={2x^2-a}/{x^2-4}# Find: i) the domain ii) the range iii) x and y intercepts iv) the asymptotes v) point of inflexion?
  
• Find the value of 2sin inverse(1/sqrt3) ?
  
• How to show that #2^h=4/5#?
  
• Given that angleAXB is complementary to both angleCYD and angleFZE, and mangleAXB = 5°, what is mangleCYD + mangleFZE?
  
• Diagram 2 shows the function #p# maps #x# to #y# and the function #q# maps #y# to #z#. Given #p:x->x-2# and #q:y->-8+3y#. Find the value of #k#.?
  
• I am not sure I am posting this in the right section, but I need to determine the amount of carbon will be in 5670 years. See picture. Thanks?!!
  
• What is the end behavior of #y = 3x^4 + 6x^3 - x^2 + 12#?
  
• A line segment is bisected by a line with the equation # 9 y - 2 x = 5 #. If one end of the line segment is at #( 7 , 3 )#, where is the other end?
  
• How do you evaluate #sin(arcsin(1/2) + arccos (0)) #?
  
• Under what type of transformation are the sign of both the x and y coordinates change in order to produce the coordinates of the image?
  
• What is the surface area of the triangular prism?
  
• How to find the point of intersection between 3 planes?
  
• If #h(x)=f(g(x))# how do you determine f(x) and g(x) given #h(x)=2x^2-1#?
  
• What is the complex number plane?
  
• Find the rule of arithmetic sequence whose first few terms are: 3, 7, 11? a1= 3, d=4 thanks
  
• Hi. Please, could somebody explain how to do question iv)? I am fine with the prior parts of the question, just not sure about iv). I will attach the mark scheme. Thanks in advance!
  
• How do you find the x and y intercepts and slope if they exist and graph the line -2x + 7y = 14?
  
• How do you write an equation of a line given (-20,-10) and (5,15)?
  
• How is similar triangle different from congruent triangle?
  
• Why can #cos^4 θ# be written as #(cos^2 θ)^2# ?
  
• The width of a rectangle is 7 feet less than its length. If the area of the rectangle is 170 square feet, then find the length and width. What is the proper way set up this equation?
  
• An isosceles triangle has sides #a, b# and #c# with sides #b# and #c# being equal in length. If side #a# goes from #(2 ,9 )# to #(8 ,5 )# and the triangle's area is #64 #, what are the possible coordinates of the triangle's third corner?
  
• Please solve q 99?
  
• Can anyone help me to solve these 2 questions ??!
  
• How do you find the area of a triangle from the co-ordinates of its vertices, without having to calculate the length of the triangles sides?
  
• How do you find a standard form equation for the line with (-2,-1) and (2,-6)?
  
• What is the trigonometric form of # (-3+15i) #?
  
• How do you evaluate #arctan sqrt3#?
  
• How do you use special right triangles to find the missing side lengths?
  
• Normal probability Distribution question from a small sample?
  
• A line passes through #(6 ,2 )# and #(5 ,3 )#. A second line passes through #(7 ,7 )#. What is one other point that the second line may pass through if it is parallel to the first line?
  
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