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bagirrra123 [75]
2 years ago
6

Amy work 5 hours less than Samantha worked. together they worked 19 hours how many hours did they each work? Help and show work

plssss
Mathematics
1 answer:
ss7ja [257]2 years ago
7 0

Answer:

Samantha worked 12 hours and Amy worked 7 hours.

Step-by-step explanation:

Samantha worked 12 hours, so Amy is 5 less, so Amy would be 7 hours. 12+7 = 19.

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M+(7-9)/n when m =2.5 and n =5 i need the answer fast plz<br> ✨
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2 years ago
Solve the following system of equations by using the substitution method.
vampirchik [111]
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3 years ago
PLEASE HELP WITH ANSWER ITS DUE TOMORROW
OleMash [197]

Answer:

A: 46 meters at 3 seconds

B: 0 meters at 6.033 seconds

C. It depends where the tree is

D. 6.033 seconds

Step-by-step explanation:

A. To find max height, we need to find the vertex.

We can do this by using vertex from y=a(x-h)+k for y=a^2+b^2+c^2

h(t) = -5t^2+30t+1

h(t)+45 = - 5x^2+30x+45+1

h(t)+45= -5(x^2-6x-9)+1

h(t)+45 = -5(x-3)^2+1

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Hence, the max height is 46 at 3 seconds

B. The minimum height is 0 meters because of the problem

C. It depends because the parabola intersects x=10 in 2 places meaning that you need the tree to be in either of these two places to intercept the horseshoe

D. -5x^2+30x+1=0

     5x^2-30x-1=0

     x=  (30+-sqrt(30^2-4*5*-1))/2*5

     x=(30+-sqrt920)/10

     x=3+-2sqrt230/10

     x=3+-sqrt230/5

      This means that x =  -0.033  or 6.033. Negative value doesn't make sense so it's 6.033 seconds  

   

6 0
3 years ago
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