Answer:
(x,y) = (-2, -1)
Step-by-step explanation:
We start off by substituting the value of "x".
5x+7y=-17
x=-![\frac{5}{4} + \frac{3}{4}y](https://tex.z-dn.net/?f=%5Cfrac%7B5%7D%7B4%7D%20%2B%20%5Cfrac%7B3%7D%7B4%7Dy)
We then solve 5![5(-\frac{5}{4}+\frac{3}{4}y ) +7y= -17](https://tex.z-dn.net/?f=5%28-%5Cfrac%7B5%7D%7B4%7D%2B%5Cfrac%7B3%7D%7B4%7Dy%20%29%20%2B7y%3D%20-17)
y=-1 *Substitute the value of "y"
x= -![-\frac{5}{4}+\frac{3}{4}x(-1)](https://tex.z-dn.net/?f=-%5Cfrac%7B5%7D%7B4%7D%2B%5Cfrac%7B3%7D%7B4%7Dx%28-1%29)
x=-2
This works.
Answer:
k = 3
Step-by-step explanation:
-12 = 3 - 2k - 3k
-12 = 3 - 5k
5k = 15
k = 3
$6.93 is the answer for your question
Answer:
11 and 22
Step-by-step explanation:
We can say that BC=2AC.
Since AB=33, AC=11 and BC=22.
Answer:
2,3 &13
Step-by-step explanation:
78=2times39=3times13
therefore the prime factors of 78=2,3,13