Answer:
A
Step-by-step explanation:
You would first subtract 6x from both sides which will give you something like:
-4= 2x - 9
then you would add 9 on both sides which would give you
5 = 2x
which now you would divide 2 by both sides with would give you
5/2 = x
simplify it one more time
2.5 = x
Answer:
20 feet long
Step-by-step explanation:
To solve this you need to use the Pythagorean theorum, 
, where c is the length of rope needed and A and B are the side lengths. Think of it like a right triangle.
So, the equation is
Which is then
And the possible values of c are 20 and -20.
From here we know the answer cannot be -20 because you cannot have a negatively long length of rope, so the answer must be 20 feet.
Answer:
8x - 3y = 12 _______( 1 )
5x = 2y + 7 _______( 2 )
On further solving ( 2 ), we get
5x - 2y = 7 _______( 3 )
Multiply ( 1 ) by 2
16x - 6y = 24 _______( 4 )
Multiply ( 3 ) by 3
15x - 6y = 21 _________( 5 )
Subtract ( 4 ) and ( 5 )
( 16x - 6y ) - ( 15x - 6y ) = 24 - 21
16x - 6y - 15x + 6y = 3
Put this in ( 2 )
5 ( 3 ) = 2y + 7
15 = 2y + 7
2y = 15 - 7
2y = 8
y = 8 / 2
Step-by-step explanation:
Answer:
obtuse angled triangle
Step-by-step explanation:
one angle is more than 90
Answer:
B=43 C=137 D=48
Step-by-step explanation:
b=43 because any small triangle you subtract each angle from 180 . 180-89-48= 43
c=137 because angle b and c make a supplementary angle so you subtract b from 180 to get c. 180-43= 137
d=48 because <edc is congruent to <eyx so they are the same size
