The similarities are they are all quadrilaterals. the differences are a rectangle has two different sets of equal side, a square sides are all right angles all the same size, and a rhombus has opposite equal acute angles.
Answer:B 660.88
Step-by-step explanation:
First, 785.63-57=728.63
Then 728.63 - 125=603.63
Last add 603.63 to 125.00
To give 660.88
Radius = Diameter ÷ 2 = 10 ÷ 2 = 5mm
<u>
Find Volume: </u>
Volume= πr²h
Volume = π (5)² (6) = 471.24mm³ (Nearest hundredth)
<u>Find Surface Area:</u>
Surface area = 2πr² + 2πrh
Surface area = 2π(5)² + 2π(5)(6) = 345.58 mm²
Answer: Volume = 471.24mm³ , Surface area = 345.58 mm²
The first one is 13 points and the 2nd one is 8. I'm pretty sure, hope this helps! :)
Answer:
The trestle meets ground level at 0.9 units and 9.1 units
Step-by-step explanation:
∵ -x² + 10x - 8 = 0 ⇒ × (-1)
∴ x² - 10x + 8 = 0
∵ 10x/2 = 5x ⇒ (x) × (5) ⇒ square x is x² and square 5 is 25
By using completing square form
∴ (x² - 10x + 25) - 25 + 8 = 0
∴ (x - 5)² - 17 = 0
∴ (x - 5)² = 17 ⇒ take square root for both sides
∴ x - 5 = -√17 ⇒ x = -√17 + 5 = 0.9
∴ x - 5 = √17 ⇒ x = √17 + 5 = 9.1
∴ The trestle meets ground level at x = 0.9 and x = 9.1
