Can someone me solve this . i forgot how to so if you could explain . x^2 + 10x - 2 = 0

So for this, I will be using the quadratic formula, which is , with a = x^2 coefficient, b = x coefficient, and c = constant. Using our equation, plug the numbers in their appropriate spots:

Next, solve the exponent and the multiplications:

Next, solve the addition:

Next, apply the product rule of radicals here and simplify the radical:

Next, divide:

*The above is your exact solution. Approximates (rounded to the hundreths) are below:

Next, solve the equation twice, once with the + symbol and once with the - symbol:

i leave the calculator work to you.

7. diameter 4 miles, circumference 4π miles

8. radius 0.2 miles, circumference 0.4π miles

[this is a bad problem because the actual radius of a car on the track is less than 0.2 miles so the answer is less than 0.4π miles]

9. radius 6 feet, circumference 12π feet

10. diameter 14 cm, circumference 14π cm

11. diameter 4.8 feet, circumference 4.8π feet

a reflection across the x-axis , followed by the by a reflection across the y-axis , and then a scale dilation of 0.5 .