Answer:
Either B or D
Step-by-step explanation:
Answer:
48.5
Step-by-step explanation:
Let's call the distance from the beach to the playground x.
Let's call the distance from the stand to the parking lot z.
Let's call the base of the biggest triangle in the picture (from the parking lot to the left) y.
Recall the pythagorean theorem: the sum of the squares of the legs of a right triangle is equal to the square of the hypotenuse.
There are three right triangles we can work with.
Triangle with sides 48, x and z. Here z is the hypotenuse so we get the equation
Triangle with sides 27, x and y. Here y is the hypotenuse so we get
Triangle with sides z, y and (48+27). Here (48+27) is the hypotenuse so we get
. That is,
We have 3 equations and 3 unknowns (x, y and z). So let's take the last equation:
and replace
and
using expressions that contain an expression in terms of x from the first two equations we came up with.
That gives us:
which we solve for x as follows:
Now that we know x we can substitute 36 for x into the equation
and solve for z as follows:
This means that the distance from the beach to the parking lot is 36 m and the distance from the stand to the parking lot is 60 m.
T . S . A = π r l + π r 2 this is the formula
It is true that the ratio 4/7 to 8/9 has a unit rate of 9/14.
In a unit rate, the denominator becomes 1. So we divide the numerator by the denominator to make it one.
Now according to the question we have been given two ratios which are 4/7 and 8/9.
We have to find the unit rate of 4/7 to 8/9. For this we will divide 4/7 by 8/9. We will get,’
= (4/7)/(8/9)
It can be written in a simpler way as
= (4*9)/(7*8)
= 36/56
Reducing it into a simple fraction we get,
= 9/14
Thus, the ratio 4/7 to 8/9 has a unit rate of 9/14. Hence the statement is true.
Learn more about Unit rate here: brainly.com/question/19493296
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