Question

What is the value of the expression below when y, equals, 5y=5 and z, equals, 4z=4?

4, y, plus, 9, z
4y+9z

Answer 1

To evaluate the expression 4y + 9z with y = 5 and z = 4, substitute the values into the expression and simplify: 4(5) + 9(4) equals 56.

Step-by-step explanation:

The student is asking to evaluate the expression 4y + 9z when y = 5 and z = 4. To find the value of the expression, we substitute the given values of y and z into the expression:

4y + 9z = 4(5) + 9(4)

Now, we perform the multiplication:

4(5) = 20 and 9(4) = 36

Then, we add the results together:

20 + 36 = 56

Therefore, the value of the expression 4y + 9z when y equals 5 and z equals 4 is 56.