Two triangles are similar if and only if all corresponding angles are equal (congruence), even if the corresponding sides are equal or not, therefore the answer is true because ΔJKL and ΔRST are similar and the statement above demands that "it must be", namely, this is a sufficient condition.
Answer: 1.2
Step-by-step explanation:
Let X denotes the grades on a language midterm at Oak Academy.
As per given ,
X follows normal distribution ( because it has symmetric graph)
![\mu=67,\ \ \ \ \sigma= 2.5](https://tex.z-dn.net/?f=%5Cmu%3D67%2C%5C%20%5C%20%5C%20%5C%20%5Csigma%3D%202.5)
Formula for z : ![z=\dfrac{X-\mu}{\sigma}](https://tex.z-dn.net/?f=z%3D%5Cdfrac%7BX-%5Cmu%7D%7B%5Csigma%7D)
For X = 70, we have
![z=\dfrac{70-67}{2.5}=\dfrac{3}{2.5}=1.2](https://tex.z-dn.net/?f=z%3D%5Cdfrac%7B70-67%7D%7B2.5%7D%3D%5Cdfrac%7B3%7D%7B2.5%7D%3D1.2)
Hence, the z-score for Ishaan's exam grade = 1.2
The slope is -1/2x in this case because it is always next to a variable y=mx+b.