Answer:To find out the Area of a scalene triangle whose three sides are given, first find out the half perimeter
s = (a+b+c)/2
where a, b, and c are the length of the three sides of a triangle
s = (35 + 45 + 50) / 2
= 130 / 2
= 65 cm
Area of scalene triangle is given by
A = sqrt (s (s - a) (s - b) (s - c))
= sqrt (65 * (65 - 35) ( 65 - 45) (65 - 50))
= sqrt (65 * 30 * 20 * 15)
= sqrt (585000)
= 764.853 sq cm
Step-by-step explanation:
Answer:
C and B
Step-by-step explanation:
(6)
× 
← cancel 3x - 7y on numerator and denominator
= 
× 
= 
= 
→ C
(7)
÷ 
Factorise the denominators of both fractions
x² - 9 = x² - 3² = (x - 3)(x + 3) ← difference of squares
4x - 12 ← factor out 4 from each term
= 4(x - 3)
Then rewrite as
÷ 
← cancel 8 and 4 by 4
= ÷ 
• leave first fraction, change ÷ to × , turn second fraction ' upside down'
= × 
← cancel x - 3 on numerator and denominator
= 
× 
← cancel 2 and 6 on numerator and denominator
= 
→ B
Volume of cylinder:
=area large×height
= 3.14×11×11×15
=5699.1
Hopes help!
36x - 20 = 160
+ 20 + 20
36x = 180
—— ——
36 36
ANSWER: x = 5
Answer:
1 2/9
Step-by-step explanation:
Convert any mixed numbers to fractions.
Then your initial equation becomes:
−112÷−92
Applying the fractions formula for division,
=−11×22×−9
=−22−18
Simplifying -22/-18, the answer is
=129
