Simplify 3√ ̅10 + 7 √ ̅15 - 6 √ ̅10 - 4 √ ̅15

An advertising firm has an old computer that can prepare a whole mailing in 6 hours. with the of newer model the job is complete in 2 hours. how long would it take the newer model to do the job alone?

Need showing work for this problem 56.25 ×25.80

The statements below can be used to prove that the triangles are similar. ? △abc ~ △xyz by the sss similarity theorem. which mathematical statement is missing? ∠b ≅ ∠y ∠b ≅ ∠z