2,563 Answered Questions for the topic Maths

02/24/21

Probability: Normal Distribution Problem.
The mass of waste in filled large dustbin bags is normally distributed with a mean of 6.8 kg and a standard deviation of 1.5 kg. The mass of waste in filled small dustbin bags is normally... more
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02/23/21

Find the value of x from this equation:
32x-2-17x-2+66 = 0.
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02/23/21

If three numbers in ratio 3:4:6 have an LCM of 144, how de we find the the GCD and HCF?
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Maths

02/23/21

there are only black pens and green pens in a box. the ratio of the number of black pens to the number of green pens are 2:5. what fraction of the pens are black?
what fraction of there pens are black?
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Maths

02/22/21

a circle C has equation x^2 + y^2 - 6x + 10y + 9 =0 . The line with equation y=kx where k is a constant, cuts C at two distinct points. Find the range of values for k
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02/22/21

math statements

which makes the statement true.5) 15c>45 6) 25=d-10ac=4 a) d=45bc=3 b) d=35c.c=2 c) d=15d. c=1 d) d=57) 562e 8) h512ae=60 a) h=60b.e=50 b)... more
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02/22/21

needing help with math questions

Determine if each is a true or false number sentence.5n >25 if n=522 - h 100 if h=10c + 9 = 15 if c=6.5
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02/22/21

Solving Ordinary Differential Equations Using Picard's Method
Given that f'(t) =dy/dt = t*ey ; y(0) = 0.Determine the value of y using Picard's method when t = 0:3. (Use 2 iterations)
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02/22/21

create a cost function in the form CA=mx+b where m is total cost per burger x is the number of burgers sold and b is fixed cost of per week
m= 0.45x= 450b= 1077.5how would this look as an equation which can be graphed because when I do it it looks like 0.45 x 450 + 1077.5and when I try to put it on online graphing technologies it won't... more
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02/21/21

What is the derivative?
Find the following derivatives.zs and zt, where z = e^(5x+3y), x=8st, and y = 2s+9tzs = ?zt = ?
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02/19/21

The side of a cube is elongated and becomes three times larger than its original length. The new larger cube will hold 108 liters of water. How much water can fit in the small original cube?
The side of a cube is elongated and becomes three times larger than its original length. The new larger cube will hold 108 liters of water. How much water can fit in the small original cube?
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02/19/21

Selma will mix color. To get the right shade, she needs to take 1 cl dark green color to 1.5 dl white color. She has 1 dl dark green color. How many liters of finished paint is enough?
Selma will mix color. To get the right shade, she needs to take 1 cl dark green color to 1.5 dl white color. She has 1 dl dark green color. How many liters of finished paint is enough?1,6 liter is... more
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02/19/21

Math formula question

The formula for area of a triangle is: Area = 1/2 base times height. (A= 1/2 bh). Find the area of a triangle that has a base of 12 and a height of 8
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02/18/21

A cuboid with a square base surface has the diagonal square root of 118 cm and the longest edge length 10 cm. How big is the volume?
A cuboid with a square base surface has the diagonal square root of 118 cm and the longest edge length 10 cm. How big is the volume?
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02/18/21

Math problem in des
How much 36% acid solution should be added to 12%  acid solution to make 192mL of a 14% acid solution?How many ml of 36%How many ml of 14%
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02/16/21

Of 4 women and 3 men in a table row, how many ways can the chair be arranged such that two men cannot seat together?
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02/15/21

What is the velocity vector and position vector?
GIven an acceleration vector, initial velocity (u0, v0), and initial position (x0, y0), find the velocity and position vectors for t>=0.a(t)=<cos t, 2 sin t><u0, v0>=<0,... more
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02/15/21

Please help with the following series math.
Prove the sum of the series in terms of x:12+22+32+...........+x2 = [(x(x+1)(2x+1)]/6.
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02/14/21

Profit loss math help needed.
A trader sells 25 oranges and 20 apples at 6$, incurring a loss of 11.25% combining both goods. What is the cost price of one apple and one orange. What percentage of discount must the trader put... more
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02/13/21

Composite functions
If f(x)= -2x+7 and g(x)=x2-2, then f(g(3)) is equal toanswer choices:-3-1-77
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02/12/21

Find the velocity vector and position vectors?
Given an acceleration vector, initial velocity (u0, v0), and initial position (x0, y0), find the velocity and position vector for t >= 0.a(t)=<cos(t), 5sin(t)><u0, v0> = <0,... more
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02/11/21

What is the expected number of games played?
Ramesh plans to play 39 chess games. Suppose that the chance of his winning in each game is 0.65. However, if Ramesh wins the last game, then he will keep on playing until he loses. The expected... more
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02/10/21

find x: 3tanx = -1
solve on [0, 360)answer must be an exact value, if not round to the nearest hundredth
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02/10/21

If in a place 1 person is born every 4 seconds and 1 person dies ever 10 seconds, what is the population growth rate per year in that country?
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02/09/21

What is the derivative?
Find the derivative of the following above equation^The final result shouldn't have I, j, or k. It should only have the variable t
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