6. 2x+(-4)y (if x = -4 and y=-2) Evaluate each expression using the variable replacement
2 answers:
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I assume you are asking one of three things, so I will answer all of them.
if you are asking what is 1/2 of 312, then multiply 312 by 1/2. 312 is really just 312/1, so
we multiply fractions by multiplying straight across
if you were asking what part of 3 1/2 is 1/2 then we have to recognize what 3 1/2 is as an improper fraction. to do this, we convert 3 into halves. how many halves of pizza are there in 3 whole pizzas? 6. so we have 6 halves and one half, which is a total of 7 halves.
now, we do the same thing as the first problem
if you were asking what is half of 3.12, then we convert 1/2 to a decimal and multiply
if you are asking what is 1/2 of 312, then multiply 312 by 1/2. 312 is really just 312/1, so
we multiply fractions by multiplying straight across
if you were asking what part of 3 1/2 is 1/2 then we have to recognize what 3 1/2 is as an improper fraction. to do this, we convert 3 into halves. how many halves of pizza are there in 3 whole pizzas? 6. so we have 6 halves and one half, which is a total of 7 halves.
now, we do the same thing as the first problem
if you were asking what is half of 3.12, then we convert 1/2 to a decimal and multiply
Answer:
x = 225.16 feet
Step-by-step explanation:
Given that,
The angle between the piling and the pier is 60°.
A surveyor has set up his transit on one side of the lake 130 feet from a piling that is directly across from a pier on the other side of the lake.
We need to find the distance between the piling and the pier. Let the distance be d. Using the trigonometry to find it as follows :
So, the required distance is 225.16 feet.