Answer:
Yes, she got a better deal.
Step-by-step explanation:
.85 x 99 = 84.15
$89 is greater than $84.15.
Answer:
63
Step-by-step explanation:
Sum of all the angles of a triangle is 180
so 70+47+X=180
X= 180-117
X=63
Answer:
I think it is d
Step-by-step explanation:
Answer:
Step-by-step explanation:
Step 1 . Let take X1 = 1 Y1 = 5 , X2 = 3 and Y2 = 2
Step 2. Slop of the line is (Y2-Y1)/(X2-X1)
Step 3. Point value (2–5)/(3–1)
Answer is —3/2 = —1.5
Answer:
Step-by-step explanation:
Numerator
sin
x
cos
y
+
cos
x
sin
y
−
[
sin
x
cos
y
−
cos
x
sin
y
)
=
sin
x
cos
y
+
cos
x
sin
y
−
sin
x
cos
y
+
cos
x
sin
y
=
2
cos
x
sin
y
Denominator
cos
x
cos
y
−
sin
x
sin
y
+
cos
x
cos
y
+
sin
x
sin
y
=
cos
x
cos
y
−
sin
x
sin
y
+
cos
x
cos
y
+
sin
x
sin
y
=
2
cos
x
cos
y
---------------------------------------------------------------
left side can now be expressed as
2
cos
x
sin
y
2
cos
x
cos
y
=
2
cos
x
sin
y
2
cos
x
cos
y
=
sin
y
cos
y
and
sin
y
cos
y
=
tan
y
=
right side hence proved