If it's a regular octahedron, then you can calculate it using the formula $2\sqrt3a^2$ where $a$ is the length of the edge.
If it's not regular, you have to calculate the area of each side individually.

6 0

3 years ago

Rudy collects baseball cards, and he currently has 300 cards. Starting tomorrow, he will purchase 1 pack of 15 baseball cards ev

Delvig [45]

Answer:

To find the number of cards, you must use the equation c = 300 + 17d. Collecting your known information in an organized form will be realllly helpful now and in the future. C represents the number of cards, while D represents the number of days!

Step-by-step explanation:

Starting with the original amount, which is 300---->

Here is the answer:

15 - 1 + 3 = 17 extra cards per day

3 0

3 years ago

Which is the best estimate of<br>90/7 divided by 1 3/4

Studentka2010 [4]

Answer:

1 3/4=7/4 since 1*4+3=7, so (90/7)/(7/4)=(90/7)(4/7)=360/49, mixed number form is 7 17/49 and in decimal form is 7.35.

Step-by-step explanation:

6 0

3 years ago