Determina cuáles de las siguientes expresiones son ecuaciones y cuales no Justifica, tu respuesta.

a. 40 + x = 15

b. 27 + 40 + 16 = 83

C. P -89 = 46

d. {[3 + 2 + (9-7) 4 (3+ 4)}}

e. m + 25 + 32 91

f. 32 +251 - 361-55

g. y - 3 = -7

Problem situation: caren is making rice and beans. she can spend no more than $10 on ingredients. she buys one bag of rice for $4.99. beans cost $0.74 per pound. how many pounds of beans, x, can she buy? inequality that represents this situation: 10≥4.99+0.74x drag each number to show if it is a solution to both the inequality and the problem situation, to the inequality only, or if it is not a solution.

The given diagram shows the parts of a right triangle with an altitude to the hypotenuse. using the two given  measures, find the other four.

The line plot below represents the number of letters written to overseas pen pals by the students at the waverly middle school. each x represents 10 students. how many students wrote more than 6 and fewer than 20 letters. a.250 b.240 c.230 d.220