Area=1/2 times base times height
note:bh=base times height
a=1/2bh
b=width
h=-4+2w
h=2w-4
subsitute
a=1/2w(2w-4)
a=1/2(2s^2-4w)
a=w^2-2w
a=63
63=w^2-2w
subtract 63 from both sdies
0=w^2-2w-63
factor
find what 2 numbers multiply to get -63 and add to get -2
the numbers are -9 and 7
so
0=(w-9)(w+7)
if xy=0 then x and/or y=0
so
w-9=0
w+7=0
solve each
w-9=0
add 9 to both sdies
w=9
w+7=0
subtract 7 from both sides
w=-7
width cannot be negative so this can be discarded
width=9
subsitute
l=2w-4
l=2(9)-4
l=18-4
l=14
legnth=14 in
width/base=9 in
Answer:
The end point of a ray is A
Step-by-step explanation:
Hope this Helps
-10p+9=12
-9 -9
-10p=3
—— —
-10 -10
P=3/-10 or -0.3
Answer:
its C
Step-by-step explanation:
Answer:
10
Step-by-step explanation:
Given expression is .
is a complex expression.
The value of<em> i </em>is –1.
By definition of absolute value,
Now, substitute in the above formula.
(since <em>i </em>= –1)
(since and )
(Square root of 100 is 10)
= 10
Hence, the value of the expression is 10.