when you multiply a number by 5 and then by 2, it is the same as multiplying by 10. Multiplying by by 10 means you add a zero to the end of the number so the digit in the ones column will always be zero
Take 1/2 of 1 and square it and add to both sides
1/2 squared=1/4, add to both sides
x^2+x+1/4=19/4+1/4
factor perfect square
(x+1/2)^2=20/4
(x+1/2)^2=5
square root both sides
x+1/2=+/-√5
minus 1/2 both sides
x=-1/2+/-√5
x=-1/2+√5 or
x=-1/2-√5
B is answer
52 words, you subtract 5.00 then divide 20.80 by 0.04 and get 52
3 hours is the correct answer
Y equals 3/2x plus 10 (4,12)
4 is x and 12 is y
y=3/2x+10
12=3/2(4)+10
12=3/8+10
12=0.375+10
12=10.375
10 is not equivalent/equal to 10.375
