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drek231 [11]
3 years ago
6

Help i tried and cant get the answer lol​

Mathematics
1 answer:
zloy xaker [14]3 years ago
8 0

Answer:

209 \frac{3}{4}  -  {3}^{2}  \times (8 {}^{2}  - 38 \frac{1}{2} ) \\  = 209 \frac{3}{4}  - 3 {}^{2}  \times 25 \frac{1}{2}  \\   = 209 \frac{3}{4} - 229 \frac{1}{2}  \\   =  - 19 \frac{3}{4}

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A line segment has endpoints (-5, 10) and (a,b) . If the midpoint of the segment is (13, -2), what is the absolute difference be
AlexFokin [52]
If the line segment point is D(-5, 10) and E(a,b) and the  midpoint of the segment is F(13, -2) that mean 
DE= 2*DF

You can directly find the distance of AC 
Xdf= Xf-Xd= 13 - (-5)= 18
Ydf= Yf - Yd= -2 - 10= -12

Then add the distance of AB( which is 2*AC) to point D
Xe= a = Xd + 2*Xdf 
a= -5 +2*18= 31

Ye= b = Yd + 2Yf
b= 10+ 2*-12= -14

<span>absolute difference between a and b:
|b-a|= </span>|-14-31|= 45
7 0
3 years ago
A stone is thrown vertically upward from a platform that is 20 feet height at a rate of 160 ft/sec. Use the quadratic function h
Nutka1998 [239]

Check the picture below.

\textit{vertex of a vertical parabola, using coefficients} \\\\ y=\stackrel{\stackrel{a}{\downarrow }}{-16}x^2\stackrel{\stackrel{b}{\downarrow }}{+160}x\stackrel{\stackrel{c}{\downarrow }}{+20} \qquad \qquad \left(-\cfrac{ b}{2 a}~~~~ ,~~~~ c-\cfrac{ b^2}{4 a}\right)

\left(-\cfrac{ 160}{2(-16)}~~~~ ,~~~~ 20-\cfrac{ (160)^2}{4(-16)}\right) \implies \left( - \cfrac{ 160 }{ -32 }~~,~~20 - \cfrac{ 25600 }{ -64 } \right) \\\\\\ \left( 5 ~~~~ ,~~~~ 20 +400 \right)\implies (\stackrel{seconds}{5}~~,~~\stackrel{feet}{420})

6 0
1 year ago
A Ferris wheel can accommodate 45 people in 25 minutes. How many people could ride the Ferris wheel in 2 hours? What was that ra
Sliva [168]

Answer:

5400

Step-by-step explanation:

60 min=1 hour

120 min=2 hr

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4 0
3 years ago
Read 2 more answers
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Dominik [7]
The combination formula is given by

C(n, r) = \frac{n!}{(n-r)!r!}

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4 years ago
A skydiver is falling at about 176 feet per second how many feet per minute is he falling
const2013 [10]
I got the answer as 10,560 per min
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3 years ago
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