Answer:
B and D
Step-by-step explanation:
7z -1 = 27 46 - 8z = 14
+1 +1 -46 -46
7z = 28 -8z = -32
/7 /7 /-8 /-8
z = 4 z = 4
I don’t know if the answer is rite but imma guess 5
For two linear equations to have exactly one solution, their gradient/slope must be different. That's the only requirement. For example y=x intersects with -1/3x - 8 at (-6, -6). So one that has only one solution could be y=x+5.
For two linear equations to have no solutions they must have the same gradient/slope but not be the same equation. Hence, y = -1/3x + 8 would never intersect with y = -1/3x - 8.
For two linear equations to have infinite solutions, they must be the same line or simplify to give the same line. I.e. 3y = -x - 8 would have infinitely many solutions with the above graph.
-6(3 - x) = 5
<em><u>Distributive property.</u></em>
-18 + 6x = 6
<em><u>Add 18 to both sides.</u></em>
6x = 24
<em><u>Divide both sides by 6.</u></em>
x = 4 (This is your answer.)
Put the number in the formula and do the arithmetic.
C = (5/9)(329 - 32)
C = (5/9)(297)
C = 165
The temperature in °C is 165.