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erik [133]
3 years ago
14

A Rectangular has area 12a^2 and perimeter 14a what are the dimensions of this Rectangular?​

Mathematics
1 answer:
Nataliya [291]3 years ago
5 0

9514 1404 393

Answer:

  3a by 4a

Step-by-step explanation:

For dimensions L and W, the area and perimeter are ...

  A = LW = 12a^2

  P = 2(L+W) = 14a

Using the second equation, we can find L:

  L +W = 7a . . . . . divide by 2

  L = 7a -W

Substituting into the area formula gives the quadratic ...

  (7a -W)(W) = 12a^2

  W^2 -7aW +12a^2 = 0 . . . . arrange in standard form

  (W -3a)(W -4a) = 0 . . . . . . . factor (find factors of 12 that total 7)

Then we have the two solutions ...

  W = 3a, L = 4a

  W = 4a, L = 3a

The rectangle dimensions are 3a by 4a.

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Answer:

Step-by-step explanation:

1\frac{1}{2}=1×\frac{2}{2}, +\frac{1}{2}

(-\frac{3}{2})÷\frac{3}{4}×(-\frac{2}{3})

\frac{3}{2}×\frac{4}{3}×\frac{2}{3}

\frac{1}{2}×4×\frac{1}{3}

4×\frac{1}{3}=\frac{1}{3}+\frac{1}{3}+\frac{1}{3}+\frac{1}{3}

=\frac{4}{3}

8 0
1 year ago
Turn 32/64 into a percent?
alexandr402 [8]


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So, for this question, divide 32 by 64 which is 0.50. Multiply this decimal by 100 and you get 50.

So 50% is the percent for 32/64.

Hope it helps :)

5 0
3 years ago
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Please help will give Brianliest!!!
marshall27 [118]

Answer: y=2(x-3)-5

I hope this is good enough:

8 0
3 years ago
After the translation, where is A located?
vovikov84 [41]

Answer:

(-3, 13)

Step-by-step explanation:

The transformation that moves a point 4 left and 8 up is ...

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The transformation that reflects a point across the y-axis is ...

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Applied after the translation, the transformation of ∆ABC becomes ...

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in Arabic numeral form: ٦٤
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