Answer:
s = 10
Step-by-step explanation:
since the triangles are similar then the ratios of corresponding sides are in proportion , that is
=
( substitute values )
=
( cross- multiply )
4s = 40 ( divide both sides by 4 )
s = 10
Answer:
2.75
Step-by-step explanation:
(y-5)6+15–5y=5
(y-5+5)6-6+15-15–5y=5-6-15+5
y-5y=-11
-4y/-4=-11/-4
y=2.75
7,614 ,7,361,
Hope this helped.
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)

Formula for z : 
For X = 70, we have

Hence, the z-score for Ishaan's exam grade = 1.2