2,563 Answered Questions for the topic Maths

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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07/12/21

The carbon (C) in the compound...
The carbon (C) in the compound C3H3Cl5 weighed 66 g. How much did the hydrogen (H) weigh? (C, 12; H, 1; Cl, 35)(A) 3.4 g(B) 1.2 g(C) 66 g(D) 1.375 g(E) none of these
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07/12/21

Expand the equation:
Expand: (a1/2+b1/2)2(A) a1/4+b1/4(B) a+(ab)1/2+b(C) a+b(D) a+2a1/2b1/2+b(E) none of these
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07/12/21

Write 4.̅5̅4̅5̅ as a fraction of integers

(A) 4541/999(B) 909/200(C) 450/99(D) 4545/1000(E) none of these
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07/12/21

Solve for x, y, z: {4x – y = 4} {y – 5z = –12} {5x + z = 19} Then evaluate: x + y + z =
(A) 161/3(B) - 43(C) 15(D) 57(E) none of these
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