evaluate the following expression if x = –4.28, and y = –4.68. Round your answer to the nearest tenth.x – 5y
x-5y
-4.28 -5(-4.68) =
-4.28 + 23.40 = +19.12
Now you round to the nearest tenth.
well 5 y = 23.4
so
x - 5 y = -4.28 - (-23.4)
minus a minus is a plus
so
x - 5 y = -4.28 + 23.4
= 19.12 which to the nearest tenth is 19.1
well 5 y = -23.4 forgot minus sign
so
x - 5 y = -4.28 - (-23.4)
minus a minus is a plus
so
x - 5 y = -4.28 + 23.4
= 19.12 which to the nearest tenth is 19.1
To evaluate the expression x - 5y when x = -4.28 and y = -4.68, you need to substitute these values into the expression and perform the corresponding operations.
Step 1: Replace x with -4.28 and y with -4.68 in the expression x - 5y:
-4.28 - 5(-4.68)
Step 2: Multiply 5 by -4.68:
-4.28 + (5 * 4.68)
Step 3: Perform the multiplication:
-4.28 + 23.4
Step 4: Add the two numbers:
-4.28 + 23.4 = 19.12
Step 5: Round the answer to the nearest tenth:
The answer, 19.12, rounded to the nearest tenth is 19.1.
Therefore, x - 5y, when x = -4.28 and y = -4.68, is equal to 19.1 when rounded to the nearest tenth.