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3 years ago

Just need help solving this problem.

Mathematics

1 answer:

Sav [38]3 years ago

6 0

<h3>Answer:</h3>

19 sq. m

<h3>Step-by-step explanation:</h3>

The easiest way is to split the shape into two rectangles and solve from there.

The first rectangle to spilt is the 5x3 and then solve:

A = lw = 3 x 5 = 15

The second rectangle is 4x1 because we must take out the section (3) used by the other rectangle:

A = lw = 1 x 4 = 4

Then add the areas together:

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Cuanto me da como resultado

Likurg_2 [28]

Step-by-step explanation:

1) $(-4)^2{\cdot}(-4)$

We know that, $a^x{\cdot}a^y=a^{x+y}$

$(-4)^2{\cdot}(-4)=(-4)^{2+1}\\\\=(-4)^3\\\\=64$

2) $(-2)^5{\cdot} (-2)^3$

Again using above property,

$(-2)^5{\cdot} (-2)^3=(-2)^8\\\\=256$

3) $5^{-3}$

We know that,

$a^{-x}=\dfrac{1}{a^x}$

So,

$5^{-3}=\dfrac{1}{5^3}\\\\=\dfrac{1}{125}$

4) $2.5^2=2.5\times 2.5\\\\=6.25$

Hence, this is the required solution.

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