Solution:
we have been asked to find
How much more time did Maria spend doing research ?
Maria spends doing research = 30%
and using email = 15% of a day (24 hours)
Time spent on research = 30% of 24 = 
Time spent on checking email = 15% of 24 = 
so, 
Hence , Maria spends 3.6 hours more on doing research than checking email.
Answer:
13. 144 seats
Step-by-step explanation:
13. Find 1 unit:
5 units = 120
1 unit = 120 divide 5 = 24
Find filled seats using units:
6 units = 24 x 6 = 144
Answer: 144
From the given volume, we know that the ratio is:
![\text {Ratio of yellow eraser to white eraser = } \sqrt[3]{ \dfrac{16}{2} }](https://tex.z-dn.net/?f=%5Ctext%20%7BRatio%20of%20yellow%20eraser%20to%20white%20eraser%20%3D%20%7D%20%20%5Csqrt%5B3%5D%7B%20%5Cdfrac%7B16%7D%7B2%7D%20%7D%20)
From the given area, we know that the ratio is:

Equate the two ratio and solve for x:
![\sqrt[3]{ \dfrac{16}{2} } = \sqrt{ \dfrac{52}{x} }](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B%20%5Cdfrac%7B16%7D%7B2%7D%20%7D%20%20%3D%20%5Csqrt%7B%20%5Cdfrac%7B52%7D%7Bx%7D%20%7D%20)
Cube both sides:

Square both sides:

Simplify each term:

Cross multiply:

Divide both sides by 256:

Cube root both sides:
19. $30,681.82
20. Find surface area for this one
21. Use geometry
I think it’s a... I think it’s a carrot