Question

lesson 11·quiz
name:
3 what is the value of the expression 13.5 - 6.48? record your answer on the grid.
then fill in the bubbles.
4 which equations can you use to find 27.13 - 19.85?
choose all the correct answers.
a 19.85 + n = 27.13
b 27.13 + n = 19.85
c n = 19.85 + 27.13
d 19.85 = 27.13 - n
e 27.13 = n - 19.85
5 sam is looking at cell phone plans. a local company offers a monthly plan
for $58.95. the company is having a sale and offering a discount of $4.75 off
the monthly plan. sam says that the new cost is $11.45.
is he correct? explain.

Explanation:

Step1: Analyze equation A

If \(19.85 + n=27.13\), then \(n = 27.13-19.85\) (by subtracting \(19.85\) from both sides of the equation).

Step2: Analyze equation B

If \(27.13 + n=19.85\), then \(n=19.85 - 27.13\), which is not the same as \(27.13-19.85\).

Step3: Analyze equation C

\(n = 19.85+27.13\) is an addition equation, not a subtraction equation for \(27.13 - 19.85\).

Step4: Analyze equation D

If \(19.85=27.13 - n\), then \(n=27.13 - 19.85\) (by rearranging the equation: \(n=27.13-19.85\)).

Step5: Analyze equation E

If \(27.13=n - 19.85\), then \(n=27.13 + 19.85\), which is not the same as \(27.13-19.85\).

Answer:

A. \(19.85 + n = 27.13\), D. \(19.85 = 27.13 - n\)