The answer is B, because it all goes in order so no need for parentheses
Answer:
yes 2=138 degrees
Step-by-step explanation:
Not hundo perecent sure, sorry if it's wrong, if you want me to show my work then please ask
In each case, you can use the second equation to create an expression for y that will substitute into the first equation. Then you can write the result in standard form and use any of several means to find the number of solutions.
System A
x² + (-x/2)² = 17
x² = 17/(5/4) = 13.6
x = ±√13.6 . . . . 2 real solutions
System B
-6x +5 = x² -7x +10
x² -x +5 = 0
The discriminant is ...
D = (-1)²-4(1)(5) = -20 . . . . 0 real solutions
System C
y = 8x +17 = -2x² +9
2x² +8x +8 = 0
2(x+2)² = 0
x = -2 . . . . 1 real solution
Answer:
Hi! The correct answer is x = -1 y = -1 and the ordered pair is (-1,-1)
Step-by-step explanation:
<em><u>~Solve the first variable in one of the equations, then substitute the result into the other equation~</u></em>
Answer:
it would be A
Step-by-step explanation:
Because Coaster A is TWICE as large as coaster B 15+15 is 30
