Answer:
{x = -1 + √13 , x = -1 - √13}
Step-by-step explanation:
<u><em>Completing the square</em></u>:
f(x) = x² + 2x - 12
= x² + 2x + 1 - 1 - 12
= (x² + 2x + 1) - 1 - 12
= (x + 1)² - 13
<u><em>Solving</em></u>:
f(x) = 0
⇔ (x + 1)² - 13 = 0
⇔ (x + 1)² = 13
⇔ x + 1 = √13 or x + 1 = -√13
⇔ x = -1 + √13 or x = -1 - √13
She spent $9.
$16+$6 is $22, so the total $31 minus $22 leaves us with the $9 she spent for the taxi.
Answer:
reducing 9.35 to 19.44 is rounded to 19.4
Step-by-step explanation:
9.35 to 19.44 is rounded to 19.4
19.35 = 19.4
19.36 = 19.4
19.37 = 19.4
19.38 = 19.4
19.39 = 19.4
19.40 = 19.4
19.41 = 19.4
19.42 = 19.4
19.43 = 19.4
19.44 = 19.4
Hence Lower bound of of the rectangle = 19.35 mm
Answer:
2.5
Step-by-step explanation:
Its too simple to explain soz
You take $18.80 divide by 2 =$9.40 then $18.80+$9.40=$28.20
$28.20 x's 5.5=$$155.10
$18.80 x's 40=$752.00
<span>then add 752.00+155.10=$907.10</span>
