Factorize using the difference of squares identity.
Then
the old time train museum is raising the price of tickets for train rides. tickets used to cost $4.80 each. the new tickets pric
2 answers:
Answer: $6
Step-by-step explanation:
Given: The old time price of ticket raised by the museum = $4.80
Now, since the new tickets price will be 1.25 times the old ticket price.
Therefore, the new price of the ticket raised by the museum=
⇒ The new price of the ticket raised by the museum=$6
Thus, the new price of the ticket raised by the museum= $6
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Given:
The variance of a distribution = 195.
To find:
The standard deviation, rounded to the nearest thousandth.
Solution:
Standard deviation of a distribution is the square root of the variance of the distribution.
Here, the standard deviation of the distribution is
Therefore, the standard deviation is 13.964.
If the sides are in the ratio of 11:16:24, it means that they are all multiples of a same number x, according to these factors.
So, the shorter side is 11x feet long, the middle one is 16x feet long, and the longest side is 24x feet long.
This means that the perimeter is
feet long. But we know that this is 510 feet, so we have
.
So, the three sides are 110, 160 and 240 feet long.
To find the area of a triangle knowing its three sides, you can use Heron's formula, which states that, if is half the perimeter of the triangle whose sides are
, the area
is given by
In our case, so the formula becomes