Answer:
I think the surface area is 382.
<span>Now we need to find the percentage of scores that are below -1.75. To do this, we need to look -1.75 up in the normal distribution table (your teacher should have given you one or there should be one in your textbook). If we do this, we find that approximately 4% of scores are below -1.75.
z = (X - M)/S, where X is a score, M is the mean and S is the standard deviation. In your case, we have z = (1 - 2.4)/.8. This gives us a z-score of -1.75.</span>
Hello!
To find the y-intercept of any given equation, we will need to substitute zero into any x-value.
y = 7/6x - 8/3 (substitute x = 0)
y = 7/6(0) - 8/3 (multiply)
y = -8/3
Since x was substituted as zero, the ordered pair should look like (0, y), where y is the y-intercept.
Therefore, the y-intercept of the given equation is (0, -8/3).
Answer:
Part A) The triangles ABC and EDC are similar by AAA, because the three internal angles are equal in both triangles
Part B) The width of the river is about ![39\ ft](https://tex.z-dn.net/?f=39%5C%20ft)
Step-by-step explanation:
we know that
If two triangles are similar, then the ratio of its corresponding sides is equal and its corresponding angles are congruent
Part A) we know that
In this problem , triangles ABC and CDE are similar by AAA, because its corresponding angles are congruent
so
-----> by vertical angles
-----> is a right angle
-----> the sum of the internal angles must be equal to 180 degrees
Part B) we know that
The triangles ABC and EDC are similar -------> see Part A
therefore
![\frac{BC}{DC}=\frac{AB}{DE}](https://tex.z-dn.net/?f=%5Cfrac%7BBC%7D%7BDC%7D%3D%5Cfrac%7BAB%7D%7BDE%7D)
substitute the values and solve for AB
![\frac{65}{25}=\frac{AB}{15}](https://tex.z-dn.net/?f=%5Cfrac%7B65%7D%7B25%7D%3D%5Cfrac%7BAB%7D%7B15%7D)
![AB=15*(\frac{65}{25})=39\ ft](https://tex.z-dn.net/?f=AB%3D15%2A%28%5Cfrac%7B65%7D%7B25%7D%29%3D39%5C%20ft)
Ok but what question is that