Answer:
The value of x is 7 and value of y is 45
Step-by-step explanation:
In ΔXYZ
∠X = 50°, ∠Y=30°
To Find ∠Z we will use angle sum property of triangle (Sum of all angles of triangles is 180°)
So,∠X + ∠Y + ∠Z = 180°
So,50°+30°+ ∠Z = 180°
∠Z=180°-80°
∠Z=100°
Now we are given that ΔXYZ ≅ΔFED
So, the corresponding sides are equal and the corresponding angles are equal.
So, ∠Z= ∠D
So, 100=2y+10
100-10=2y
90=2y
45=y
Now XY = EF
So, 9 = 3x-12
21=3x
7=x
Hence The value of x is 7 and value of y is 45
Let x be the number of children
Let y be the number of adults
x + y = 4
4x + 7y = 19
Answer:
A. An equity line of credit
Step-by-step explanation:
(-2m + 5n)²
(-2m + 5n) (-2m + 5n)
-2m(-2m + 5n) + 5n(-2m + 5n)
4m² - 10mn - 10mn + 25n²
4m² - 20mn + 25n²
4m²⇒ -2m * -2m
-20mn ⇒ 2(-2m)(5n)
25n² ⇒ 5n * 5n
<span>C. 4m² − 20mn + 25n²; a perfect square trinomial</span>
