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4 years ago

2+2 and 5+3 and 2+5 and 2+6

Mathematics

2 answers:

ANTONII [103]4 years ago

8 0

Answer:

2+2 = 4 5+3 = 8 2+5 = 7 2+6 = 8

Step-by-step explanation:

Usimov [2.4K]4 years ago

7 0

Answer:

4, 8, 6, and 8

Step-by-step explanation:

Count the numbers fingers like this:

2 fingers plus 2 fingers equals 4

Bam

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3 years ago

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A rectangle with a length of L and a width of W has a diagonal of 10 inches. Express the perimeter P of the rectangle as a funct

KatRina [158]

<h2>Answer:</h2>

The expression which represents the perimeter P of the rectangle as a function of L is:

$Perimeter=2(L+\sqrt{100-L^2})$

<h2>Step-by-step explanation:</h2>

The length and width of a rectangle are denoted by L and W respectively.

Also the diagonal of a rectangle is: 10 inches.

We know that the diagonal of a rectangle in terms of L and W are given by:

$10=\sqrt{L^2+W^2}$

( Since, the diagonal of a rectangle act as a hypotenuse of the right angled triangle and we use the Pythagorean Theorem )

Hence, we have:

$10^2=L^2+W^2\\\\i.e.\\\\W^2=100-L^2\\\\W=\pm \sqrt{100-L^2}$

But we know that width can't be negative. It has to be greater than 0.

Hence, we have:

$W=\sqrt{100-L^2}$

Now, we know that the Perimeter of a rectangle is given by:

$Perimeter=2(L+W)$

Here we have:

$Perimeter=2(L+\sqrt{100-L^2})$

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4 years ago