Calculate the length of ab. round to the nearest hundredth. if possible, explain your answer ( very much appreciated but not needed ) because i don’t understand this subject and i’m just trying to learn.

the length of AB nearest to hundredth is 8.48 cm

Step-by-step explanation:

Pythagoras theorem states that the square of the hypotenuse side is equal to the sum of the other two sides.

Labelled the diagram as shown below.

In a right triangle BDC.

DC = 9 cm , BD = x units and BC = 12 units

then,

by Pythagoras theorem in triangle BDC

Substitute the given values we have;

Simplify:

Subtract 81 from both sides we get;

cm

Now, in triangle BDA:

AD = 3 cm and BD = x cm

Using Pythagoras theorem, to solve for AB

Substitute the given values we have;

         .....[1]

Substitute the value of in [1] we get;

or

Simplify:

cm

Therefore, the length of AB nearest to hundredth is 8.48 cm

the entire expression should be subtracted from 30. to subtract the quantity, distribute the negative sign, which changes the signs on the terms. so, the –2 changes to positive and gets added to 30 instead of subtracted from it.

hope this ! ^w^

the thermometer is precise but not accurate

step-by-step explanation: