Answer:
(6,8)
Step-by-step explanation:
2x + y = 20
6x - 5y = -4
Multiply the first equation by -3
-3(2x + y) = -3*20
-6x -3y = -60
Add this to the second equation
-6x-3y = -60
6x - 5y = -4
--------------------
-8y = -64
Divide each side by -8
-8y/-8 = -64/-8
y = 8
Now find x
2x+y = 20
2x +8 = 20
2x+8-8 = 20-8
2x = 12
Divide by 2
2x/2 = 12/2
x = 6
(6,8)
Answer:
8/20 or 2/5
Step-by-step explanation:
So, first, there are 20 cards total.
Out of those 20 .cards, only 8 are prime.
(1, 3, 5, 7, 11, 13, 17, 19)
So, the fraction would look like 8/20, which when simplified,
2/5.
Hope this helps!!
3y = x - 6
y = 1/3x - 2.
slope her is 1/3. A perpendicular line will have anegative reciprocal slope. To find the negative reciprocal of a number, u flip the number and change the sign. So the slope we need os -3/1 or just -3.(see how I flipped the slope and changed the sign)
y = mx + b
slope(m) = -3
(3,-5)...x = 3 and y = -5
now we sub and find b, the y int
-5 = -3(3) + b
-5 = -9 + b
-5 + 9 = b
4 = b
so ur perpendicular equation is : y = -3x + 4
the correct answer would be -5/12