<span>x^2 = 5x + 2
x^2 -5x -2 = 0
a = 1
b= -5
c= -2
x = [-b +- sq root (b^2 -4 ac)] / 2a
</span>x = [--5 +- sq root (25 --8)] / 2a
<span>x = [ 5 +- sq root (33)] / 2
</span><span><span><span>
Answer is "a"
</span></span></span>
Answer:x = 2 I think
Step-by-step explanation: 12 x ? = 4 (? + 2) + 20 if you put 2 instead of ? If would be 12 x 2 = 24 is equal to 4(2 + 2) + 20
Answer:
60cm
Step-by-step explanation:
30 (8)+70 (4)+40 (2)=600mm
1mm=0. 1cm
600mm=0. 1 (600)cm
600mm=60cm
Answer:57
Step-by-step explanation:
There were 18 girls because 27 divided by 3 is 9 so then you do 2 times 9 which is 18 :)