5x + 2y = 7
-5x + 4y = 5
You can immediately eliminate the x-terms and subtract:
2y = 7
4y = 5
-_____
-2y = 2
y = -1
Substitute back to find x:
-5x + 4y = 5
5x + 4(-1) = 5
5x - 4 = 5
5x = 9
x = 1.8
Finally, substitute back to check your work:
5x + 2y = 7 => 5(1.8) + 2(-1) = 7 => 9 - 2 = 7 <--True
-5x + 4y = 5 => -5(1.8) + 4(-1) = 5 => -9 - 4 = 5 <--False
Answer:
There is no solution.
Answer:
Step-by-step explanation:
it is an arithmetic sequence.
c=6-3=3
\[a_{n}=3+(n-1)*3\]
\a_{n}=3n
a_{8}=3*8=24
Answer:
The length of the side adjacent to that angle is 26 units
Step-by-step explanation:
We are given
In a right triangle, the side opposite a 33 degree angle is 17 units
Firstly, we will draw diagram
we can use trig
now, we can solve for x
So,
The length of the side adjacent to that angle is 26 units
Answer:
e=1
Step-by-step explanation:
(e+1)×3=6
3e+3=6
3e=6-3
3e=3
e=3/3
e=1
:)
It is 48 cm together because mutiply it
