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kirill115 [55]
1 year ago
11

Put in least to greatest 3.1 , -3 , -3.75 , 3 1/2 , -3 1/5

Mathematics
2 answers:
Luda [366]1 year ago
6 0

Answer:

<u>-3.75, -3 1/5, -3, 3.1, 3 1/2</u>

Step-by-step explanation:

Converting all to decimals :

⇒ 3.1

⇒ -3

⇒ -3.75

⇒ 3 1/2 → 3.5

⇒ -3 1/5 → -3.2

So, on ordering from least to greatest :

<u>-3.75, -3 1/5, -3, 3.1, 3 1/2</u>

SpyIntel [72]1 year ago
6 0
-3.75,-3 1/5,-3,3.1,3 1/2
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An explosion causes debris to rise vertically with an initial speed of 120 feet per second. The formula h equals negative 16 t s
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Answer:

The debris will be at a height of 56 ft when time is <u>0.5 s and 7 s.</u>

Step-by-step explanation:

Given:

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As per question, h(t)=56\ ft. Therefore,

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Rewriting the above equation into a standard quadratic equation and solving for 't', we get:

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t=\frac{-b\pm \sqrt{b^2-4ac}}{2a}\\\\t=\frac{-(-15)\pm \sqrt{(-15)^2-4(2)(7)}}{2(2)}\\\\t=\frac{15\pm \sqrt{225-56}}{4}\\\\t=\frac{15\pm\sqrt{169}}{4}\\\\t=\frac{15\pm 13}{4}\\\\t=\frac{15-13}{4}\ or\ t=\frac{15+13}{4}\\\\t=\frac{2}{4}\ or\ t=\frac{28}{4}\\\\t=0.5\ s\ or\ t=7\ s

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Again after reaching maximum height, the debris falls back and at t=7\ s, the height is 56 ft.

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3 years ago
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do that with pithagoras:

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