This is josh's solution for the equation: x^2-6x-7=0
x^2-6x-7=0
x^2-6x=7
x^2-6x+9=7+9
(x-3)^2=16
x-3=16
x=19
x-3=-16
x=-13
is josh's solution correct? explain.

josh's solution is incorrect.

correct solution is stated below and   x = 7 and -1

step-by-step explanation:

given: josh's solution for the equation

we have to check the solution of josh

no , the solution of josh is not correct.

in third step

where he has obtained

he simplify by taking square roots both side,

then he forgot to take which is ± 4.

so the correct solution is as follows,

thus, and

solving , we get,

and

thus, we obtained x = 7 and -1

total amount to be paid = $19.5

step-by-step explanation:

given ,

original price = $25.99

discount = 25%

discount amount = 25% of original price

discount amount = 25/100   * 25.99

discount amount = $6.49

hence , the total amount to be paid = original price - discount amount

                                                            = $25.99 - $6.49

                                                            =$19.5

total amount to be paid = $19.5

step-by-step explanation:

there are 36 inches in a yard

25 : 36 = 0.69 yards (you can round to 0.70)