i cant figure it out!!!!! help
2007-02-22 23:55:09 · 10 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
1. leg = 12, leg = 5, hypotenuse =
2. leg = 9, hypotenuse = 14, leg =
2007-02-22 23:56:32 · update #1
1. leg = 12, leg = 5, hypotenuse =
2. leg = 9, hypotenuse = 14, leg =
2007-02-22 23:56:36 · update #2
Find the unknown length in each given right triangle
2007-02-23 00:32:32 · update #3
all you do is
-1.3z-9.4 = -0.4z+8.6
add the z's first so add .4z because your moving it and you have to change the sign so it would be -.9z -9.4= 8.6
Then you would add 9.4 ti 8.6 and it would equal 18
-.9z = 18 then you would get ride of the number next to the z and then the answer would be -20 i think
2007-02-23 00:08:32 · answer #1 · answered by Marissa 2 · 2⤊ 0⤋
Z = 10
2007-02-23 07:59:07 · answer #2 · answered by David R 2 · 0⤊ 3⤋
* combine all 'z'
-1.3z + 0.4z = 8.6 + 9.4
(( when you transpose you'll change the sign ))
*then do the operations
-0.9z = 18
*you must isolate 'z' by dividing it by its coefficent and dont forget the right side
-0.9z/-0.9 = 18/- 0.9
* then you'll get the answer
z = -20
(( you can check it by substituting the get value of 'z' ))
2007-02-23 09:23:00 · answer #3 · answered by ? 2 · 0⤊ 0⤋
simple.
Soln;
-1.3z - 9.4 = -0.4z + 8.6
1) Collect the like terms
-1.3z + 0.4z = 9.4 + 8.6
-0.9z = 18
2) Divide boyh sides by -0.9
-0.9z/-0.9 = 18/-0.9
z = -20 Answer
2007-02-23 08:18:57 · answer #4 · answered by Tommy 2 · 2⤊ 0⤋
from the original posted problem:
-1.3z-9.4=-0.4z+8.6
-0.9z-18=0
0.9z+18=0
0.9z=-18
z=-18/0.9= -20
2007-02-23 08:03:11 · answer #5 · answered by Anonymous · 2⤊ 0⤋
z = -20
1. hypotenuse = 13
2. leg = â115 = 10.723805294763608304814159672154...
2007-02-23 08:13:06 · answer #6 · answered by math freak 3 · 2⤊ 0⤋
1)-1.3z-9.4=-0.4z+8.6
Add 0.4 from both sides:
-0.9z-9.4=8.6
Add 9.4 from both sides:
-0.9z=18
Divide -0.9 from both sides:
z=-20
Check:
-1.3(-20)-9.4=-0.4(-20)+8.6
26-9.4=8+8.6
16.6=16.6
2)The Pythagorean Theorem:
a^2+b^2=c^2
a=12
b=5
c=the hyptonuse
12^2+5^2=c^2
144+25=c^2
169=c^2
c=13
3)a^2+9^2=14^2
a^2+81=196
a^2=196-81
a^2=115
a=10.72
2007-02-23 09:06:36 · answer #7 · answered by Anonymous · 0⤊ 0⤋
-1.3z-9.4=-0.4z+8.6
-9.4-8.6=1.3z-0.4z
-18=0.9z
z= -18/0.9 =-180/9= -20
.
2007-02-23 10:00:25 · answer #8 · answered by Tuncay U 6 · 0⤊ 0⤋
- 1.3z - 9.4 = - 0.4 + 8.6
- 1.3z - 9.4 + 0.4z = - 0.4z + 8.6 + 0.4z
- 0.9z - 9.4 = 8.6
- 0.9z - 9.4 + 9.4 = 8.6 + 9.4
- 0.9z = 18
- 0.9z / - 0.9 = 18 / - 0.9
z = 18 / - 0.9
z = - 20
- - - - - - - - -s-
2007-02-23 08:44:17 · answer #9 · answered by SAMUEL D 7 · 1⤊ 0⤋
is this ur homework?
Coz if i answer this.. you won't learn..
2007-02-23 08:08:45 · answer #10 · answered by Here I am 2 · 0⤊ 3⤋