Answer:

Step-by-step explanation:
we have

Remember that

and

substitute

Answer: x=8 x=0
Step-by-step explanation:
Answer:
0
Step-by-step explanation:
The determinant of this matrix is zero (0).
Answer:
20 ft²
Step-by-step explanation:
the area (A) of a triangle is calculated using the formula
A =
bh ( b is the base and h the height )
here b = 5 and h = 8
A =
× 5 × 8 = 20 ft²
Answer:
In ∆ABC AND ∆DEF
ABC=DEF...........each 90°
SIDE AB =SIDE ED...........given
SIDE BC =SIDE EF............B-F-C and E-C-F
∆ABC =∆DEF....................by SAS test