Questions in mathematics

Questions in mathematics

[Terjawab] How many mg of a metal containing 45% nickel must be combined with 6 mg of pure nickel to form an alloy containing 78% nickel?

[Terjawab] What is the price of a triple pack of CDs if Rachel bought one double pack of CDs for $20, which is $4 less than \(\frac{3}{4}\) the cost of a triple pack of CDs?

[Terjawab] Is \(\frac{2}{5}\) greater than 0.5?

[Terjawab] Solve for \( w \). \[ 1 = –(–w + 6) \] A. \( w = 3 \) B. \( w = –7 \) C. \( w = –3 \) D. \( w = 7 \)

[Terjawab] Solve each system algebraically: 1. \(3x + 6y = -6\) 2. \(5x - 2y = 14\)

[Terjawab] The Global Positioning System (GPS) satellite travels \(\frac{23}{30}\) kilometers in \(\frac{1}{5}\) second. How far does the satellite travel in 12 seconds?

[Terjawab] What is the cube root of 3000?

[Terjawab] Kevin can carry a basket 5 feet. Rachel can carry it 3 feet farther than Kevin. Daniel can carry the basket half as far as Rachel. Is it reasonable to say that they can carry it 15 feet with each person taking only one turn?

[Terjawab] Samuel wants to use his earnings from Monday and Tuesday to buy some batteries that cost $5.60 each. On Monday, he sold 16.2 pounds of cans. On Tuesday, he sold 11.8 pounds of cans. They were selling the cans to the recycling center for $0.40 per pound. How many batteries can he buy? Show your work.

[Terjawab] Help find the perimeter of a square that measures 78.4 inches. What is the length of each side, and how do you solve the problem?