Một mảnh đất hình chữ nhật có chu vi là 180cm. Nếu tăng chiều rộng 6cm, giảm chiều dài 6cm thì diện tích mảnh đất không thay đổi. Hỏi diện tích mảnh đất bạn đầu là bao nhiêu

What is 1/2 x (6 x 4)+3 + 2 show your work

Jonathan pays $1.90 per pound for potatoes. he buys 8.3 pounds of potatoes. he determines that he will pay $15.77, before tax, for the potatoes. which best describes the reasonableness of jonathan’s solution? jonathan’s answer is reasonable because there are two decimal places in the factors and two in the product. jonathan’s answer is unreasonable because there are three decimal places in the factors and two in the product. jonathan’s answer is reasonable because is 16, and 16 is close to 15.77. jonathan’s answer is unreasonable because is 8, and 8 is not very close to 15.77.

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items