So for this you will be doing proportions, and in this case the equation will be 
Firstly, you will cross multiply. Your equation should look like this: 
After that, just divide 24 on each side and your answer will be 
In short, she can wrap 72 presents in 15 hours.
Answer:
10.69
Step-by-step explanation:
We must first know that the angle of refraction is given by the following equation:
n_water * sin (A_water) = n_air * sin (A_air)
where n is the refractive index, for water it is 1.33 and for air it is 1.
The angle (A) in the air is 22.8 °, and that of the water is unknown.
Replacing these values we have to:
1.33 * sin (A_water) = 1 * 0.387
sin (A_water) = 1 * 0.387 / 1.33
A_water = arc sin (0.2907) = 16.9 °
now for the tank depth:
h = D / tan (A_water)
D = 3.25
Replacing
h = 3.25 / tan 16.9 °
h = 10.69
Therefore the depth is 10.69 meters.
Answer: -2
hope this helps <3
Answer:
9 10/11 km
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Step-by-step explanation:
<u>Step 1: Define</u>
<em>Identify</em>
7 2/11 km to school
Another 2 8/11 km to the park
<u>Step 2: Find Total</u>
- Add: 9 10/11 km
Answer:
She spent 4/6 of her free time.
Step-by-step explanation:
1/6 + 3/6 = 4/6
