(8.05 hc) the work of a student to solve a set of equations is shown: equation a: y = 15 − 2z equation b: 3y = 3 − 4z step 1: −3(y) = −3(15 − 2z) [equation a is multiplied by −3.] 3y = 3 − 4z [equation b] step 2: −3y = 15 − 2z [equation a in step 1 is simplified.] 3y = 3 − 4z [equation b] step 3: 0 = 18 − 6z [equations in step 2 are added.] step 4: 6z = 18 step 5: z = 3 in which step did the student first make an error? step 4 step 3 step 2 step 1

answer: city needs 2.4 inches of rainfall more to match the record of 40 inches.

step-by-step explanation:

since we have given that

total annual rainfall a city record = 40 inches

this year, total rainfall recorded = 37.6 inches

number of inches of rainfall   is needed to match the record of 40 inches is given by

hence, city needs 2.4 inches of rainfall more to match the record of 40 inches.

step-by-step explanation:

the true statements are:

r = set of real numbers

n = set of natural numbers, 1,2,

w = n u{0} = {0,1,}