3 years ago

Can someone help me find surface area

Mathematics

1 answer:

stealth61 [152]3 years ago

7 0

Answer: the surface area is 7,800

Step-by-step explanation:

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A TV screen is 41 cm long and 31 cm high. The length of the diagonal is closest to: A) 49 cm Eliminate B) 51 cm C) 54 cm D) 48 c

GuDViN [60]

Answer:

The length of the diagonal is closest to 51 cm.

Step-by-step explanation:

Given:

TV screen is 41 cm long and 31 cm high.

Now, to find the length of the diagonal.

By using pythagorean theorem:

leg 1 = 41 cm, leg 2 = 31 cm.

Let the hypotenuse be $x$ .

(leg 1)² + (leg 2)² = hypotenuse²

$41^{2} +31^{2}=x^{2}$

⇒ $1681+961=x^{2}$

⇒ $2642=x^{2}$

Using square root on both sides we get:

⇒ $51.40=x$

So, the length of the diagonal = 51.40 cm.

By rounding off of 51.40cm it becomes 51 cm.

Therefore, the length of the diagonal is closest to 51 cm.

7 0

3 years ago

Three friends go for coffee together every week. They have a tradition that one of them pays for all, based on the following gam

Mandarinka [93]

Answer:

3 times

Step-by-step explanation:

The total number of flips for each round is;

First flip + Second flip + Third flip = 3 flips

Average = [ext]Number of flips/Round[/ext]

Average = 3/1

Average = 3 times.

Check:

Suppose they all match at First and Second rounds,

Average = [ext]3 * 3 / 3[/ext]

Therefore, average = 9/3

Average = 3 times

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3 years ago

Simplify (-2x - 9)(-4). 8x - 36 -8x + 36 8x + 36 -8x - 36

AlekseyPX

(-2x-9)(-4) = 8x+36

I hope that helps!

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What is 1/2 + 4/3 + 3/2 + 4/3 + 10/6 = ?? (they are fractions)

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6 and 1/3 or 19/3 or if you need the decimal 6.3 repeating

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