Answer:
4 d
Step-by-step explanation:
Given D is mid-point of BC and AD⊥AC
From right angle △DAC
cosC=
a/2
b
=
a
2b
...(i)
also from cosine formulae
cosC=
2ab
a
2
+b
2
−c
2
...(ii)
From (i) and (ii) we get
a
2b
=
2ab
a
2
+b
2
−c
2
⇒4b
2
=a
2
+b
2
−c
2
⇒b
2
=
3
a
2
−c
2
∴cosAcosC=
2bc
b
2
+c
2
−a
2
.
a
2b
=
ca
[(
3
a
2
−c
2
)+c
2
−a
2
]
=
3
2
(
ca
c
2
−a
2
)
Yeah, they're equal.
8 * 3 = 24 and 8 * 4 = 32
so 24x+32 = 24x+32
Answer:
Option (B)
Step-by-step explanation:
Domain of function is defined by the set of x-values (input values) and Range of a function is a set of y-values (output values).
From the graph attached,
Domain of f(x) → Set of all real numbers
Range of f(x) → y-values > 0
Domain of
→ Set of all real numbers
Range of
→ y < 2
Therefore, domain of both the functions is a set of all real numbers.
Option (B) is the correct option.
3x^3=0
the only possible answer is x=0
factor
3(x^3)=0
x^3=0
x=0
C
Answer:
3.75
Step-by-step explanation:
1.25x3=3.75 easy. you just need to times the height by length