Questions in mathematics

Questions in mathematics

📝 Answered - Multiply. $(2 x-y)(3 x+y)$

📝 Answered - Select the correct answer from each drop-down menu. Last year, sales at a bookstore increased from $5,000 to $10,000. This year, sales decreased to $5,000 from $10,000. What percentage did sales increase last year? What percentage did sales decrease this year? Sales increased last year, from $5,000 to $10,000. When sales dropped from $10,000 to $5,000 this year, sales decreased

📝 Answered - Simplify, using the rule for order of operations if necessary: [tex]5-(5-4)-9=[/tex]

📝 Answered - A coordinate grid has a line labeled -3x + (1/2)y = -3 passing through the points (1, 0) and (0, -6). What value of b will cause the system to have an infinite number of solutions? Given the system: y = 6x - b -3x + (1/2)y = -3 Options for b: 2, 4, 6, 8

📝 Answered - Find the value of \( \lambda \) so that the vector \( \vec{A} = 2\hat{i} + \lambda\hat{j} - \hat{k} \) and \( \vec{B} = 4\hat{i} - 2\hat{j} - 2\hat{k} \) are orthogonal to each other.

📝 Answered - Q3) Find the least common multiple (LCM) and highest common factor (HCF) by prime factorization method: (i) 60, 76, 106

📝 Answered - Find the mean of the following ungrouped data: 1, 2, 5, 7, 9, 10 = 35r - 4

📝 Answered - 3) $5[a-3(4 a-5 b)]+4[3(2 a-b)-2(b-2 a)]+15 a=$ 4) $2 a-(-3 x+2\{-a+3 x-2[-a+b-(2+a)]\})+3 x+8-4 b=$ 5) $-4\{m-2 n-[3 n+2(2 n-m)+5(4 n-3 m)]\}+5(m-n)+67 m=$ 6) $a-(a+b)-3\{-2 a+[-2 a+b+2(b-1)-a-b+1]\}-3+7 b=$

📝 Answered - Which graph represents the function $y-3=\frac{3}{2}(x-4)$?

📝 Answered - What is the solution to the equation $\frac{1}{x}=\frac{x+3}{2 x^2}$? A. $x=-3$ B. $x=-3$ and $x=0$ C. $x=0$ and $x=3$ D. $x=3$