Answer:
She can buy 6
Step-by-step explanation:
4=36
1=9
54/9=6
Hello!
x² - 4x + 6 = 9 <=>
<=> x² - 4x + 6 - 9 = 0 <=>
<=> x² - 4x - 3 = 0 <=>
<=> x = -(-4)±√(-4)²-4×1×(-3)/2×1 <=>
<=> x = 4±√16+12/2 <=>
<=> x = 4±√28/2 <=>
<=> x = 4±2√7/2 =>
=> x = 4+2√7/2 and x = 4-2√7/2 =>
=> x = 2+√7 and x = 2-√7
The equation has two solutions.
Good luck! :)
Answer:
See explanation
Step-by-step explanation:
(4)
Using the sine ratio in the right triangle
sinΘ = = , thus
Θ = () ≈ 51.1°
(5)
Using the tangent ratio in the right triangle
tanΘ = = , thus
Θ = () ≈ 38.7°
Answer:
3/500
Step-by-step explanation:
42/7000 simplified is 3/500 or in decimal form it's 0.006