El Superyate Tetraedro diseñado por Jonathan Shwinge
es un tetraedro regular con aristas de 20 m de longitud.
La distancia r de una esquina al centro de la base (se
muestra en la imagen de abajo) es 11,5 m.
¿Cuál es la altura vertical, h, del tetraedro?
Redondea tu respuesta a la décima de metro más
cercana.

Step-by-step explanation:

13. A school is planning an excursion for all of their students to see the

penguins on Phillip Island. They find a company who can provide

two different types of coaches for the trip: one that holds 34

passengers and one that holds 51 passengers. The coach company

has 8 of the smaller coaches and 4 larger coaches available.

The hire cost $500 for a smaller coach and $700 for a larger coach.

If there are 374 students and teachers going on the trip,

determine the minimum total cost for the coach hire.

( ͡° ͜ʖ ͡° ) copy and   paste it

step-by-step explanation:

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!