Answer: 
Step-by-step explanation:
When answering a problem like this, you first isolate the absolute value. TO do this, first subtract 8 from both sides, to get –2|4–5y|=-4. Then divide both sides of the equation to get |4–5y|=2. The next thing you do is split the equation into 4-5y=2 and 4-5y=-2, because the contents of the absolute value could be negative or positive, and simplifying both into y = 2/5, and y = 6/5y.
Hope it helps <3
Answer: To compute the density of a spherical object, you must weigh it. Then you divide its mass by its volume to get its density. Keep in mind that an object's density has nothing to do with its size.
Step-by-step explanation:
1. σ is the density of the sphere.
2. M is the mass of the sphere.
3. r is the radius of the sphere.
Answer:
The numerical expression is simplified into 8.
Step-by-step explanation:
You have to use the P.E.M.D.A.S. formula.
16-8[(3+6)÷9]
Solve the brackets(parenthesis) first.
Inside the brackets, you have to use the P.E.M.D.A.S. formula once again, as if it was a different equation.
16-8[(9)÷9]
Once you've found the solution to the equation 3+6 inside the parenthesis, you divide it by 9.
16-8[1]
Then, since there are no exponents, you multiply.
16-8
Then you subtract.
8
17 + 2 = 19 km is 1/2 of the total length, that is,
19 = (1/2)h
(1/2)h = 19 multiply both sides by 2
h = 2*19
h = 38 km
The total length in kilometers is 38 km
