D. Pyramid volume is calculated 1/3×base area×height
Answer:
Step-by-step explanation:
Well, the ratio of yellow beads to blue beads is 4:5. The best way I think is to guess and check multiplying the ratio by integers. You need between 15 and 20.
4 : 5 ( = 9 too little )
8 : 10 ( = 18 just right)
12 : 15 ( = 27 too much)
So per necklace, 8 yellow beads and 10 blue beads would be needed.
I hope this helps :-)
Answer:
26
Step-by-step explanation:
We know that the entire angle measures 66 degrees.
Therefore, angle y plus 40 degrees must equal 66.
In an equation:

To solve for y, subtract 40 from both sides:

So, the measure of angle y is 26 degrees.
And we're done!
1. we know that product (x) so divide it by 2 and then minus some from 1 side and add on to the other side