2,578 Answered Questions for the topic Maths

08/24/21

Homework graph quadratic functions in standard form

Graph the fuction by hand. Find the vertex round approximate coordinates to the second decimal place.y=-3x^2+12x-7
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08/18/21

Fundamentals of Mathematical Logic
You meet three inhabitants of Davison's Island and have the following talk. Can you tell which inhabitants (if any) are lying?A says, “Exactly one of us is telling the truth.”B says, “We are all... more
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08/18/21

Prove that, if x*y = z^2 and x < z then y > z, for any positive numbers x, y and z.
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Maths Math Geometry

08/10/21

calculate the dimensions of each rectangle if
A square is cut into 3 different rectangles . dimensions of square are 9x9. if all rectangles have same area find the dimensions of each rectangle
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08/07/21

A die is tossed twice. Given that the sum is greater than 7, what is the chance of getting a pair?
A die is tossed twice. Given that the sum is greater than 7, what is the chance of getting a pair?
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Maths Algebra

08/06/21

The product of 3 consecutive positive even integers is 84 times their sum. Find the 3 numbers.
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Maths Algebra

08/01/21

finding the area of a picture frame
14) A picture frame has a total length and breadth of 20cm and 10cm. The frame has a width of x cm.a) find the rule for the area (A cm^2) of the picture inside. 14, a has already been... more
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Maths Algebra

07/31/21

The sum of two numbers is 64. Show that their product has a maximum of 1024.
please show detailed working out I have trouble understanding this even though it looks easy.
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07/27/21

Weight mixture math help.
Fresh grapes contain 80 % water while dry grapes contain 10% water. if the weight of dry grapes is 250 kg what was its total weight when it was fresh??
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Maths Equation

07/23/21

a wallet contains 43 notes, all of which are either $10 or $20 notes, if it amounts to $700, how many $10 notes are there
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Maths

07/22/21

The average of two numbers is 5x. If one of the numbers is 2x+3, find the other number
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Maths

07/22/21

Without adding find the sum of 1+3+5+7+9+11+13+15+17+19+21+23+25+27
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07/20/21

Suppose T: R² → R² is a linear operator with T ([1,2]) = [1, 1] and T ([2,0]) = [2, −4].
Give a formula T([x, y]) for any[x, y] ∈ R² . Also find a basis for ker(T), a basis for range(T) and verify the dimension theorem
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07/20/21

For the subspace W = {[x, y, z] ∈ R³ ∶ 2x − 2y + z = 0} of R³,
find a basis for the orthogonal complement W‘ and verify that dim(W) + dim(𝑊') = dim(R³ ) Decompose v = [1, 2, 3] into w1 + w2, where 𝑤1 ∈ W and 𝑤2∈ 𝑊'
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07/20/21

Find the minimum distance between the given point P and the given subspace W of R³, P = (4, −1, 2), W = span({[−2, 3, −3]}) in R³
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07/19/21

HELP MATH PROBLEM
This year, a small business had a total revenue of $42,900 . If this is 35% less than their total revenue the previous year, what was their total revenue the previous year?
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07/19/21

Today only, a desk is being sold at a 33% discount. The sale price is $268. What was the price yesterday?
Today only, a desk is being sold at a 33% discount. The sale price is $268. What was the price yesterday?
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Maths

07/17/21

2 1/5 divide 1 1/5
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07/16/21

Please help me on this Trigonometry Right Triangle question.

Question:Two walls of a canyon form the walls of a steady flowing river. From a point on the shorter wall, the angle of elevation to the top of the opposing wall is 20° and the angle of depression... more
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07/16/21

differential equation
Let y≠0 for the differential equation 2ydy ⁄dx = 5 + 2x − 2y2(a) Find the implied general solution.(b) Find the particular solution that passes through the point (0,√5) and the maximum range... more
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07/12/21

Find x (image included)
https://i.imgur.com/Kq6BvIy.png(A) 42 6/7(B) 43 1/3(C) 36 2/3(D) 46 2/3(E) none of these
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07/12/21

Complete the square:
y = x2 - 6x - 16(A) y = (x - 4)2(B) y = (x - 3)2 - 16(C) y = (x - 8) (x + 2)(D) y = (x - 3)2 - 25(E) none of these
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07/12/21

Simplify the problem:
Please help me. Both square root symbols extend from the x to the 4 respectively.(5√x3y4) (4√x5y4)
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07/12/21

Factor: 2x^2...
Factor: 2x2+11x+12 The two factors are in the general form: (d x + e)(x + f). What is d x + e?(A) 2x + 3(B) 2x + 6(C) 2x + 12(D) 2x + 4(E) none of these
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07/12/21

Factor: 2x^2...
Factor: 2x2+11x+12 The two factors are in the general form: (d x + e)(x + f). What is d x + e?(A) 2x + 3(B) 2x + 6(C) 2x + 12(D) 2x + 4(E) none of these
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