Nisha did the work below to solve an equation.

step 1 7 b + 3.2 b minus 5 = 18.92
step 2 10.2 b minus 5 = 18.92
step 3 5.2 b = 18.92
step 4 b = 3.64

in which step did nisha make her first error?
step 1
step 2
step 3
step 4

Step 2

Step-by-step explanation:

10.2 and 5 do not have like terms so they cant be subtracted from each other.

(Also I did the test :D)

according to egenuity the answer is

step-by-step explanation:

d. 344.22

the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

the root or roots of a polynomial are the values of the variable that makes the polynomial equal to 0. we can find the roots of a polynomial making the expression equal to 0 and then, isolating the variable (it it has just one variable).

for example, given the following polynomial:

the root or zero of the polynomial, can be found by making the expression equal to 0, and then, isolating the variable, so, finding the root we have:

therefore, we have that the root of the polynomial is equal to 2.

we must remember that the number of roots that a polynomial can have, will depend on the degree of the polynomial, a first degree polynomial have will have one single root, a second degree polynomial (quadratic expression) may have two roots and so.

hence the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

have a nice day!