Zane is determining whether the given value of the variable is a solution of the equation. 13 + h = 21 for h = 9 What steps should Zane take? Check all that apply.

See explanation

Step-by-step explanation:

Solution:-

- There are two ways to verify whether the value of ( h ) assumed to be equal to 9 satisfies the given equation:

                           13 + h = 21

First method: Solving for ( h ) using the given equation

  1 ) Subtract ( 13 ) on both sides of the equation:

                           13 - 13 + h = 21 - 13

                            0 + h = 8

                            h = 8                

  2 ) Compare the evaluated value of ( h ) with the assumed value:

                            8 ≠ 9    

  3 ) Conclude: The given value of ( h ) is not a solution of the given equation.

 Second method: Plug and compare

   1) Plug the assumed value of h = 9 into the given equation:

                           13 + ( 9 ) = 21

                               22 = 21

   2) For the equality to be true then the both right and left hand side of the " = " must be of same numerical value:

                               22 ≠ 21

  3) Conclude: The given value of ( h ) is not a solution of the given equation.

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.