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3 years ago

Find the value of x and y.

Mathematics

2 answers:

mamaluj [8]3 years ago

6 0

Answer:

Step-by-step explanation:

Nina [5.8K]3 years ago

5 0

Answer: A.

Step-by-step explanation: Your marked answer is correct but unless you want full details, here it is:

1. From the smaller triangle's hypotnuse 5 => 10 is 5(2) = 10. So take the other sides and double it up and you will get x=6 and y=8.

2. But if you are still not sure, follows the steps to find the hypotnuse:

x (squared) + y (squared) = the prefect square of the sum.

So that means : 6 ( squared ) = 36 | 8 ( squared ) = 64 | 64+36 = 100 | And perfect square of 100 is 10.

So that's why A. is the correct answer

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Decide if the following scenario involves a permutation or combination. Then find the number of possibilities. The student body

Troyanec [42]

Answer:

735,130.

Step-by-step explanation:

The order of election of the 3 representatives does not matter so it is a combination.

The number of possible combinations

= 165! / 162! 3!

= (165 * 164 * 163) / (3*2*1)

= 735,130.

6 0

3 years ago

You have 100 feet of fencing and decide to make a rectangular garden. What is the largest area enclosed

k0ka [10]

Answer:

625 ft^2

Step-by-step explanation:

Given

$P = 100$ --- perimeter

Required

The largest area

The perimeter is calculated as:

$P = 2 * ( L + W)$

So, we have:

$2 * ( L + W) = 100$

Divide both sides by 2

$L + W = 50$

Make L the subject

$L = 50 - W$

The area is calculated as:

$A= L * W$

Substitute $L = 50 - W$

$A= (50 - W) * W$

Open bracket

$A = 50W - W^2$

Differentiate with respect to W

$A' = 50 -2W$

Set to 0; to get the maximum value of W

$50 - 2W = 0$

Collect like terms

$-2W = -50$

Divide by -2

$W = 25$

So, the maximum area is:

$A = 50W - W^2$

$A = 50 * 25 - 25^2$

$A = 1250 - 625$

$A = 625$

3 0

2 years ago

Find the surface area of a cylinder with diameter of 10 and height of 4

castortr0y [4]

Answer:

282.74

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

Plz help me get the answer ASAP

AnnyKZ [126]

Answer:

Step-by-step explanation:

$-\dfrac{1}{3}c7\qquad\text{multiply both sides by 3}\\\\c>21$

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2 years ago

What is the value of the letter n?

sleet_krkn [62]

Answer:

The value of n depends on the questin. N would be a variable in an equation.

Step-by-step explanation:

For example. 2*n=6

n is the variable in the equation. Therefore, the value of n is 3. Because 2*3=6.

8 0

3 years ago