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Marianna [84]
3 years ago
13

Daca 2/6 din lungimea unui dreptunghi este 180 m si 3/5 din latime este de 90 m ,afla perimetrul unui alt dreptunghi avand lungi

mea egala cu diferenta dintre laturile primului dreptunghi,iar latimea de trei ori mai mica decat aceasta diferenta.
Mathematics
1 answer:
kvasek [131]3 years ago
7 0
We look for the dimensions of the first rectangle:
 For the length:
 (2/6) L = 180
 L = (6/2) * (180)
 L = 540
 For the width:
 (3/5) W = 90
 W = (5/3) * (90)
 W = 150
 We look for the dimensions of the new rectangle:
 For the length:
 L '= 540-150
 L '= 390
 For the width:
 W '= (1/3) * (390)
 W '= 130
 Answer:
 The dimensions of the new rectangle are:
 L '= 390
 
W '= 130
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3 years ago
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y = -0.1x^2 + 250 ft

Step-by-step explanation:

Because this quadratic equation would have the curve-down form of:

y = -ax^2 + b

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If we let the peak (250 ft) of the curve be at x = 0. Then

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b = 250

Also at the begins and ends, thats where y = 0, the 2 points are separated by 100 ft. So let the begin at -50 ft and the end at 50ft. We have

-a(\pm 50)^2 + 250 = 0

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Can somebody help me with this math problem?
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She needs 0.1 because 4x4 is 16. :)
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Ivenika [448]

Answer:

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Plug it in for our original equation:

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Therefore, the answer is y = 11x - 18. The tricks to these problems are usually in the same format, when you are given the slope and a point it passes through, just plug in the slope and the x and y, and solve for b. Hope this helps!

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3 years ago
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