The first equation, 27 - 9x = - 7y, is equivalent to => 27 + 7y = 9x
The second equation is 45 +7y = 9x
You can see that thas system has not solution.
Those expressions represent parallel lines, so they never intercept each other, which means there is not solution.
Also you can subtract the two equations and get::
27 + 7y - 45 - 7y = 9x - 9x
=> 27 - 45 = 0
=> 27 = 45 which means the system has no solutions.
Answer: the system does not have any solution.
Answer:
Step-by-step explanation:
It is assumed PQS and RQS are similar triangles.
<u>The ratio of corresponding sides is equal:</u>
<u>Substitute side lengths and solve for x:</u>
- 15/(3x - 4) = 21/(5x - 16)
- 15(5x - 16) = 21(3x - 4)
- 5(5x - 16) = 7(3x - 4)
- 25x - 80 = 21x - 28
- 25x - 21x = 80 - 28
- 4x = 52
- x = 52/4
- x = 13
Answer:
there are 2
Step-by-step explanation:
6+6=12
Answer: 124
Step-by-step explanation:
Answer: 24.8
Explanation: If Henry is halving a number, that means he's dividing it by 2, getting two halves. You would get the original number by undoing that division, or multiplying the product by 2.
2 x 12.4 = 24.8