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Did I differentiate these two functions correctly?
y=2cos(2x)cos(14x) y'=-14 sin(14x)2 cos(2x)-4 sin(2x)cos(14x)
2 answers
asked by
Jennifer
463 views
A man is 6times as old as his son.in six years time he will be 42years old.how old is his son now?pls solve
2 answers
asked by
Glory
593 views
URGENTLY ANSWER RATIO MATHS !!!
Please EXPLAIN the steps fully CLEARLY, I have already got answer so no need to worry. This is
13 answers
asked by
HilarySweet
623 views
y = -14sin(8x)2cos(5x) - 4sin(5x)cos(8x)
u = -14sin(8x) u' = -112cos(8x) v = 2cos(5x) v' = -10sin(5x) u2 = -4sin(5x) u'2 =
2 answers
asked by
Jennifer
631 views
Lt (((1+×)^(1÷×))÷e)^1÷×
x->0
3 answers
asked by
Edward
262 views
Students were timed as they attempted to perform a simple test of dexterity. The incomplete data of results is shown below. Find
2 answers
asked by
Stoof
510 views
a street map has a scale of 1: 25000
Two streets 7cm apart on the map
2 answers
asked by
Umerah Rizwan
522 views
Find the equation of a circle passing through the origin and the points where the line 3x + 4y=12 meets the axes of the
3 answers
asked by
Lleyton
443 views
1a) for an organic dairy cow, shortly after calving, assume that the amount of milk produced follows a normal distribution with
2 answers
asked by
Anonymous
512 views
2a) assume that adult males have footless which are normally distributed with mean 24.6 cm and standard deviation 1.05 cm.
2 answers
asked by
Anonymous
599 views
Metal components for a machine have lengths which are normally distributed with mean 8 cm and standard deviation 4 cm.
A) the
3 answers
asked by
Anonymous
456 views
Charlie's age is equal to 3 times her age in 3 years time minus 3 times her age 3 years ago. How old is Charlie?
3 answers
asked by
Zara
457 views
if the radius of a sphere is increased by 10%, prove that its volume will be increased by33.1%.
4 answers
asked by
Manish
615 views
A flay pole is placed at the top of a tower.the angle of elevation of the bottom and top of the flay pole from a point on the
3 answers
asked by
Patrick
608 views
How can you recognise the beat frequency from a graph?
Why is the beat frequency the difference between the two frequencies of
1 answer
asked by
Hally
382 views
An antenna stands on a pole on the top of a house.If a woman is 70m from the house observes that the angles of elevation of the
2 answers
asked by
Stephen Ocheje
535 views
In an AP T7:T3=13:5 find APeace
1 answer
asked by
Shabista
238 views
y = 3cos(3x)cos(10x)
This function represents the displacement-time of a guitar string as it vibrates, the period of it is the
1 answer
asked by
Jen
395 views
Assuming the earth to be a sphere of radius 6370 km.If seventy five percent of the earth's surface is covered by water, then
4 answers
asked by
Ruby
952 views
A square sheet of metal 25metres side.How many circular disc of 3metres can be cut off from the metal sheet?
2 answers
asked by
Shweta panjwani
477 views
kim spent 1/2 of her money on a cake and 1/3 on sodas She had $40 left . How much did she spend and how much was her total
1 answer
asked by
Elisha
323 views
From a group of 10 people, 5 men and 5 women, six are to be chosen to serve on a committee.
a) In how many ways can the committee
4 answers
asked by
Luke
981 views
Find the volume of a cuboid whose base area is 10metercube and height is 6meter
1 answer
asked by
Rahul
365 views
A port has two radar stations at P and Q which are 20 km apart.The radar at P is set to a range of 20 km,whilst the radar at Q
2 answers
asked by
Prisha
663 views
A drawer contains 8 brown socks and 4 black socks. A sock is taken a random from the drawer, its colour noted and replaced. This
4 answers
asked by
Chris
1,103 views
Distance between two points A and B is 100km. Two cars starts from A and B at the same time and in same direction. They meet
3 answers
asked by
soha
648 views
a survey showed that 50 students were surveyed. 42 liked football, 15 liked tennis, 12 liked both football and tennis. How many
2 answers
asked by
jenny
693 views
How to convert 13million to scientific notation?
1 answer
asked by
Lavanya
349 views
20 pupils,8 males, 3 males wear glasses whats the probability that the first student is mals and wears glasses?
1 answer
asked by
Sinead
367 views
The probability that a student is not swimmer is 1/5.find the probability that out of 5 students (1) at least 4 are swimmers and
5 answers
asked by
Kavya
1,165 views
Julie is j years old. Her father is four times as old as Julie and her mother is seven years younger than her father. How old is
1 answer
asked by
Allison
427 views
Rafael is counting countertops with tiles. Tha tiles are four inches by two inches.
1 answer
asked by
Tvisha
290 views
Tom has more money than Bob. If Tom gave Bob R20 , they would have the same amount. While if Bob gave Tom R22 , Tome would then
2 answers
asked by
Hope
573 views
The rain water from a roof top of 44m*20m drain into a cylindrical tank having diameter of base 4m and height 3.5m if the tank
2 answers
asked by
Lidiya
752 views
“A solid consists of a right circular cylinder surmounted by a cone of the same diameter. If the height of the cone is 'h' and
6 answers
asked by
Megha
2,399 views
Create (invent/makeup) a data set of n=10 observations with the following properties, sample mean (x with - on top) =4, s=8, g>0
1 answer
asked by
Celine
422 views
Solve the following equations for 0《X《360
A) tan^2x + 3 tax -4 = 0 B) 2sin^2x - sinx-1 = 0 Please help Thankyou
1 answer
asked by
Anonymous
401 views
Solve the following equations for -180《 x《 180
A) 4+4cosx=sin^2x B) 2sin=5cosx Thankyou
1 answer
asked by
Anonymous
402 views
Alhaji Amed is to invest 100,000 naira in a bank in a period of four years at a simple interest rate of 10%. What is the
1 answer
asked by
Onwunali
363 views
In a group of 70 elderly people , 45 drink tea , 18 drink coffee and 35 drink both tea and coffee. How many people drink tea
1 answer
asked by
lililil
467 views
the product of two consecutive even numbers is 12 more than the square of the smallest number.Find the numbers
4 answers
asked by
molf
1,302 views
Find the equation of a straight line whuch passes through the points (2,3) and (-1,4)
5 answers
asked by
Bright ulubi
542 views
Find domain and range
a)f(x)= uderthe radical 1-3x b)f(x)=1/2x-6
1 answer
asked by
Yaekob
317 views
A positive two digit number is divided by the sum of its digits. What is the smallest and largest the result can be?
2 answers
asked by
Sam
717 views
A fair coin is tossed 5 times. If X is the discrete variable the # of tails obtained,
a) Draw the probability distribution . b)
1 answer
asked by
Zack
636 views
Mr A filled his car with fuel every fourteenth day. Mr B fills his car every eighth day. They both filled their car today. How
1 answer
asked by
Priscilla
349 views
Swarna gave 1/4 of her pocket money to her brother. Out of the remaining money she spent 1/3 for buying a book and 1/6 for
3 answers
asked by
Udaya
2,152 views
2Sin tita+2Cos tita=1.5.find tita
1 answer
asked by
Bright ulubi
356 views
If 2Sinz+2Cosx=1.5.find Sinx+Cosx
1 answer
asked by
Bright ulubi
415 views
If logx^3=0.5,find the value of x.
1 answer
asked by
Bright ulubi
356 views
If 52n-24n=25n. Calculate the value of n.
4 answers
asked by
Bright ulubi
487 views
In a test for every 6 answers carlene got correct, she got 2 wrong. She got 54 correct answers.
1 how many questions did the test
2 answers
asked by
Ren
974 views
The ratio of girls to bus in Year 8 at a particular school is 2:5. How many total students are there in Year 8 if there are 26
4 answers
asked by
Kylie
336 views
A large school in the UK offers its pupils the opportunity to learn several
non-English languages. It turns out that: • 55% of
2 answers
asked by
Jay
543 views
Two nomads leave camp at the same time.one walks at 5km/h on a bearing 039 degree.the other walks at 7.5km/h on a bearing 265
1 answer
asked by
Bright ulubi
931 views
A large school in the UK offers its pupils the opportunity to learn several
non-English languages. It turns out that: • 55% of
2 answers
asked by
Ugent Please help
546 views
Prove that: (sinx-2sin2x+sin3x)/(sinx+2sin2x+sin3x)= -tan^2 x/2.
4 answers
asked by
Mahlatse
677 views
Use each number once to make 135
Numbers to use are=100, 75, 50, 25 and 6
1 answer
asked by
Hazel
354 views
Two persons are on opposite sides of a tower. They measure that the angle of elevation of the top of the tower are 30°and
1 answer
asked by
Simran
418 views
How many silver coins, 2cm in diameter and of thickness 2 mm, must be melted to form a showpiece in the form of a frustum of a
5 answers
asked by
Simran
1,528 views
I am in a queue with n fewer people behind me than in front of me.there are three times as many people in the queue as there are
1 answer
asked by
Panda
391 views
2x^3 - 12x^2 - 32x
1 answer
asked by
John
314 views
a hosepipe feeds water into a tank of height 2m and an internal diameter of 1.6m. Calculate the volume of water in the tank when
4 answers
asked by
Stoof
420 views
State the period in radians for each of the following functions
A) y=cosx B) y=sin2x C) y=tan3x D) y=cos(x/2) Please help
1 answer
asked by
Anonymous
452 views
Solve the following equations for 0 < x < 2pi
A) sin^2x=2sinxcosx B) 3tanx=cosx Please help Thankyou
3 answers
asked by
Anonymous
558 views
There are five sand which fillings - ham, cheese, tomato, lettuce and totally plain. How many combinations? I make 11.
Ham, h &
2 answers
asked by
will
523 views
In a class of 60 students,20 play cricket and 44 play football. Find the least no. of students playing either cricket or
2 answers
asked by
Ankita
633 views
In my family the age of the three kids are 6,10 and 16. The mean age of the whole family is 24. The range is 41. How old is my
1 answer
asked by
Adeyinka
344 views
Proof that :- cot²A/(cosec A + 1)=1-sin A/1+sin A.
1 answer
asked by
atri
328 views
cot² A/cosec A + 1)²=1-sin A/1+sin A.
2 answers
asked by
atri
1,035 views
Cub leader Akela purchases supplies for 15 cubs for a 12 day camping trip, with the understanding that each boy get equal shares
2 answers
asked by
Anonymous
491 views
A bucket holds 6 litres of water. A paddling pool is in the shape of a cuboid with dimensions 700mm x 1800mm x 3000mm. How many
2 answers
asked by
Anonymous123
486 views
If 1 revolution = 360 degree ,then 5 revolution is equal to? Solution since 1 rev = 360 degree ,then 5 rev = X cross multiply X=
1 answer
asked by
Gift10613
398 views
The product of two natural numbers is 18. If one is added to four times the smaller number this is equal to the larger number.
3 answers
asked by
Shelly
569 views
280
1 answer
asked by
Derese Dewiso
327 views
Is the sine, cosine and tangent using in right-angled triangles only?
1 answer
asked by
Lisa
362 views
A pool holds 12000 L of water. to empty the pool ,water is pumped out at the rate of 150 L/min. how long does it take to empty
3 answers
asked by
rik
470 views
Solve
z^5 =-1 with the solutions in polar form. I've solved the equation z^5 =1, which I have Letz=r(cosθ+isinθ).
1 answer
asked by
Emma
408 views
Conditional statement and illustrate with a venn diagram
3 answers
asked by
Damilola
1,809 views
Say I'm at an unknown distance from a mountain, called point P, and I estimate the angle of elevation to the top of the mountain
3 answers
asked by
Ahona
581 views
A box is made of wood 5cm thick, its internal dimension are 10cm by 8cm by 11cm, what is the volume of the wood in the box
3 answers
asked by
Victor
876 views
Tom reads that each seedling he is planting needs an area of 150 square centimetres of garden. Tom has 80 seedlings to plant.
2 answers
asked by
Bobby
468 views
A charge +4 micro colombs is transferred in a uniform electric field of 200N/C between two points separated by a distance of
1 answer
asked by
Zeeshan
410 views
Find the coefficient of x^7y^4 in the binomial expansion of (1/4*x -16y)^11
so far i have 11Ck(1/4 x)^11-k
1 answer
asked by
Emma
446 views
ABC is an isosceles triangle in which the equal sides are AB and A.If AD is an altitude and |BC|=1/2|AB|.Prove that
3 answers
asked by
Pamela
686 views
A rectangular room 8m long by 5m wide contains 129m square of air. Calculate the height of the room.
I assume that the above
7 answers
asked by
Lucas
1,925 views
Calculate the perimeter of the sector of a circle in centimeters. Use pie = 22/7, radius =14cm and angle =45 degrees.
2 answers
asked by
Rolz
497 views
Use the binomial series to find the Taylor series about 0 for the function
f(x) = (1 + x)−3/5, giving all terms up to the one
1 answer
asked by
s17
494 views
How many terms are in 4x to the power2 minus 5x plus7
1 answer
asked by
Courage
265 views
in a game you have to guess what a number is through some clues the clues you are given are the hundreds digit is twice as large
1 answer
asked by
Lucy
472 views
The sum of the first and second terms of an geometry series is 9.the sum to infinit is 12.calculate the possible values of r.
1 answer
asked by
Andile
393 views
A population has a mean (q) and a standard deviation equal to 2.3
What is the smallest sample size that would give a 95%
1 answer
asked by
Anonymous
296 views
Can someone please help me with this please please 😯
An even function is symmetrical about the origin(true or false )
1 answer
asked by
Ezabel
309 views
Give the equation of the tangent line to the curve at given point x(t)=2 cos(t) y=2 sin(t) at t=pi/6?
3 answers
asked by
ChrismB
806 views
Give a parametrization of the ellipse x^2/25 +y^2/9 = 1 that travels once counter-clockwise in an
interval t ∈ [0, 2π]. t
1 answer
asked by
ChrismB
356 views
Bob has 15 more cards than Alan. Colun gives Bib 25 cards. Bob now has 3 times as many as Alan. How nany has Alan got?
1 answer
asked by
Danielle
426 views
Several years after Jane bought a watch at auction she sold it for £1218 and noticed it had increased in value by 16% from when
2 answers
asked by
Hasnan
476 views
a map with a scale of 1cm to 5km has an area of 405cmsquare. what is the actual area of this map on the ground?
4 answers
asked by
Richard
1,845 views
If 1 pipe can fill a tank in 12 hours what fraction of the tank will be filled 4 pipes in 2hpurs
1 answer
asked by
Uby
371 views
The population of a colony of frogs under ideal condition double every 10 days. Solve the the equation 2 raised to the power of
1 answer
asked by
Tom
388 views
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