Questions in mathematics

Questions in mathematics

[Done] Abbie spent \(\frac{5}{8}\) of her money and saved the rest. If she spent $45, how much money did she have at first?

[Done] Write a word problem for the expression 1.75 ÷ 0.5.

[Done] The volumes of two similar cones are \(36\pi \, \text{cm}^3\) and \(288\pi \, \text{cm}^3\). The base radius of the smaller cone is 3 cm. Calculate the base radius of the larger cone.

[Done] The expression \((3x^2)^4 / 9x^3\) is equivalent to which other expression?

[Done] What is the time that is 7 hours and 20 minutes before 2:10 p.m.?

[Done] Select the pair of equations whose graphs are perpendicular. A. \(2y = -3x + 5\) and \(2x + 3y = 4\) B. \(5x - 8y = 9\) and \(12x - 5y = 7\) C. \(y = 2x - 7\) and \(x + 2y = 3\) D. \(x + 6y = 8\) and \(y = 2x - 8\)

[Done] Combine like terms to simplify the expression: \[7x + 3y - 2 + 6x - 1 - y^2\] A. \(-2y^3 + 13x - 3\) B. \(-y^2 + 3y + 13x - 3\) C. \(-y^2 + 3y + 42x^2 - 3\) D. \(-3y^3 + 13x^2 - 3\)

[Done] Evaluate the expression when a = –1.4 and b = –2.7. |a| + b A.–1.3 B.–4.1 C.4.1 D.1.3 Solve for x. A.x = 35 B. 9 2/7 C.x = 63 D. 31 1/2 Graph the solution of the inequality. 14 < 2t + 18 ≤ 20

[Done] Use long division to find the quotient of: [tex]\frac{12x^3 + 3x^2 - 108}{3x - 6}[/tex]

[Done] Subtract and simplify: \[ \frac{10}{w} - \frac{1}{3} \]