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3 years ago

5 cm 7 cm 15 cm What is the surface area of the figure? by square centimeters

Mathematics

1 answer:

kow [346]3 years ago

6 0

Is this a right triangle or triangle is solving for?

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There are 9 people that have a conversation with each other exactly one time.

Sedbober [7]

The question is an illustration of arithmetic sequence.

The number of conversation for 19 people is 171

(a) 9 people

$Total = \frac{9 \times 8}{2}$

9 represents the number of people

8 represents the number of conversation each person had

2 represents the number of people having a conversation at once (i.e 2 people at once)

(b) 19 people

We have:

$n = 19$

The number of conversation is:

$Total = \frac{n \times (n -1)}{2}$

So, we have:

$Total = \frac{19 \times (19 -1)}{2}$

$Total = \frac{19 \times 18}{2}$

$Total = 19 \times 9$

$Total = 171$

Hence, the number of conversation for 19 people is 171

Read more about arithmetic sequence at:

brainly.com/question/18109692

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2 years ago

Find the midpoint of pq

Alina [70]

Answer:

where is the graph

Step-by-step explanation:

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2 years ago

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((x-h)^2)+((y-k)^2)

Schach [20]

Answer:

Step-by-step explanation:

= (x^2 + h^2 - 2xh) + (y^2 + k^2 - 2yk) As, (a-b)^2 = a^2 + b^2 - 2ab

= x^2 + h^2 - 2xh + y^2 + k^2 - 2yk

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3 years ago

10x^3 y^-5 z^-2 if x=3 y=2 and z=5 express your answer as a reduced fraction

sineoko [7]

Answer:

$\large\boxed{\dfrac{27}{80}}$

Step-by-step explanation:

Put x = 3, y = 2 and z = 5 to the given expression $10x^3y^{-5}z^{-2}$ :

$10(3^3)(2^{-5})(5^{-2})\qquad\text{use}\ a^{-n}=\dfrac{1}{a^n}\\\\=\dfrac{10(27)}{(2^5)(5^2)}=\dfrac{270}{(32)(25)}=\dfrac{270}{800}=\dfrac{27}{80}$

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2 years ago

Neeed Helppp plzzz ! True or False ?!!

Mamont248 [21]

Answer:

The answer to this is false.

Step-by-step explanation:

Xy is Xy and Yx is Yx.

So there you go.

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2 years ago

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5 cm 7 cm 15 cm What is the surface area of the figure? by square centimeters ​

5 cm 7 cm 15 cm What is the surface area of the figure? by square centimeters