Sorry if it's a bother, but what's the answer to these? I'm having a little bit of trouble.

~Let's change 9.9² to 10² since we have to estimate.~

We know that:

Solving the expression:

The estimated value of 9.9² × 1.79 is 179.

~Let's change √97.5 to √100 and 1.96 to 2 since we have to estimate.~

We know that:

Solving the expression:

The estimated value of √97.5 ÷ 1.96 is 5.

step-by-step explanation:

theres no picture: /

step-by-step explanation: