To prepare for new year's parade, john practice marching and playing his tuba for 45 minutes. He took a break and then practice 15 more minutes. How many minutes did john practice in all

60, 1 hour.

Step-by-step explanation:

Do not be confused by the break. The question is only asking for how many minutes he practiced in total. All you have to do is add 45 and 15 to get 60, or 1 hour.

option a, c,d are correct.

step-by-step explanation:

from the given figure, it is given that z is equidistant from the sides of the triangle rst, then from triangle tzb and triangle szb, we have

tz=sz(given)

bz=zb(common)

therefore, by rhs rule,δtzb ≅δszb

by cpctc, sz≅tz

also, from δctz and δasz,

tz=sz(given)

∠tcz=∠saz(90°)

by rhs rule, δctz ≅ δasz, therefore by cpctc, ∠ctz≅∠asz

also,from δasz and δzsb,

zs=sz(common)

∠zbs=∠saz=90°

by rhs rule, δasz ≅δzsb, therefore, by cpctc, ∠asz≅∠zsb

hence, option a, c,d are correct.

can i see the following ?

step-by-step explanation: