Answer:
Step-by-step explanation:
2) Let 't' be the temperature
t < 7
Height be 'h'
h >= 42
Cos be represented by 'c'
c >= 125
3) Distributive property: a*(b +c) =(a*b) + (b*c)
2(5a + 3b) + 5a +2b = 2*5a + 2*3b + 5a + 2b
= 10a + 6b + 5a + 2b
= 10a + 5a + 6b + 2b {Combine like terms}
= 15a + 8b
6y + 2(3x + 5) + 2y + 3 = 6y + 2*3x + 2*5 + 2y + 3
= 6y + 6x + 10 + 2y + 3
= 6y + 2y + 10 +3 + 6x
= 8y + 13 + 6x
1. substitution....because it would be easier to just sub one y in for the other then it would be to use the elimination method
2. substitution....because in one of the equations, u already have y...so just sub 6x - 13 in for y in the other equation
3. elimination....all u have to do is add them and ur y terms are eliminated, allowing u to find x
4. substitution....sub in x + 1 for y in the other equation
2x + 4(x + 1) = 28 y = x + 1
2x + 4x + 4 = 28 y = 4 + 1
6x = 24 y = 5
x = 4
the solution for this system is : (4,5)
5. elimination..
3x - y = -1 3(-2) - y = -1
2x + y = -9 -6 - y = -1
------------------add -y = -1 + 6
5x = -10 -y = 5
x = -2 y = -5
the solution to this system is : (-2,-5)
6. substitution.....sub in one y for the other
2/3x - 1 = -x + 4 y = -x + 4
2/3x + x = 4 + 1 y = -3 + 4
5/3x = 5 y = 1
x = 5 * 3/5
x = 3
so the solution to this system is (3,1)
7. substitution...sub one y in for the other
296 - 10x = 200 + 6x y = 200 + 6(6)
296 - 200 = 6x + 10x y = 200 + 36
96 = 16x y = 236
6 = x
so the solution for this system is (6,236)
Answer: 3
Step-by-step explanation: divide 36 by 12
x = 3
Answer:
6x
Step-by-step explanation:
7x - x
X by itself is the same thing as 1x.
So, if we rewrite the equation using 1x instead of just x:
7x - 1x
Now, we can subtract like we normally would.
7x - 1x = 6x
8/15 is about 0.53
It would be closer to 1/2 or 1 over 2
