Tyrone wrote an equivalent expression for 28 + x - 2n + 7 - n - 5x + 4. his equivalent expression was -3n - 5x + 39 + x. what error did tyrone make?

a. tyrone neglected to combine the x terms.

b. tyrone added the constants instead of subtracting them.

c. tyrone neglected to add the coefficients of the n terms.

d. tyrone made an error when he added the constants.

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.

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling