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Kay [80]
3 years ago
10

1/2(3/5x-8)+(7/4)(2/5x+4

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

Answer:

x+3

Step-by-step explanation:

I dont know if you want me to simplify but if so here is the work

(3x-40) + 7 • (x+10)     10x + 30

————————————————————  =  ————————

         10                 10  

Pulling out like terms :

11.1     Pull out like factors :

  10x + 30  =   10 • (x + 3)

Final result :

 x + 3

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ok so the t value of the vertex of a function in the form
f(x)=at^2+bt+c is
-b/2a

find t value
h(x)=-16t^2+50t+6
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b=50
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round
1.6 seconds
max height
input 1.6 for t and evaluate (for more precice, input 1.5625 for t)

max height is 45 feet



seems to be
b=initial velocity
c=intial height

a=-16
eqation is
h(t)=-16t^2+70t+5
vertex is -70/(2*-16)=2.1875
input for t to get max height
82 feet



answers are

1.6 seconds
45 feet
82 feet
4 0
3 years ago
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