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SCORPION-xisa [38]
3 years ago
9

¿Cuantos triángulos hay?

Mathematics
2 answers:
artcher [175]3 years ago
8 0

Answer:

18

Step-by-step explanation:

Fórmula:

\frac{a(a + 1)(b)}{2}  =  \frac{3(3 + 1)(3)}{2}  =  \frac{3(4)(3)}{2}  =  \frac{36}{2}  = 18

nalin [4]3 years ago
5 0

Answer:

Yo veo 16. tal vez sea mas...

Step-by-step explanation:

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12!/3!13! What does this mean?
AfilCa [17]
12! = 12x11x10x9x8x7x6x5x4x3x2x1 =479,001,600

3! = 3x2x1 =6
13! = 6,227,020,800

6,227,020,800 x 6 = 37,362,124,800

479,001,600/37,362,124,800=0.0128
3 0
3 years ago
Write <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%28x%2B1%29%5E2%28x-5%29%7D%7Bx%28x%2B2%29%28x-5%29%5E3%7D%20" id="TexForm
Marizza181 [45]

\bf \cfrac{x(x+1)^2(x-5)}{x(x+2)(x-5)^3}\implies \cfrac{(x+1)^2}{(x+2)(x-5)^2}


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5 0
3 years ago
The perimeter of a pool table is 30 feet. The table is twice as long as it is wide. What is the length of the pool table?
olga55 [171]

So, 30 is the perimeter. We are told the table is twice as long as it is wide.

So, we have think of 2 numbers, one being twice as big than the other. So, it is a rectangle The two number represents the length and the width. To find the perimeter we add all the lengths and the widths. Since the pool table is a rectangle we have two lengths and two widths.

So,

the tow numbers be 10 and 5. 5 is half of 10 and, when multiplied by 2 it is 10. So just to make sure the numbers 5 and 10 work out lets do a calculation.

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10+5+10+5 = 30feet. This proves that the sides are these two numbers.  

8 0
3 years ago
4. Ethan types 1/5 of a page in 1/4 minute. How much time does it take him to type a full page?
Allisa [31]

Answer:

4/5 minute or 12 seconds

Step-by-step explanation:

1/4 page= 12 seconds

1 page = 48 seconds

48/60

24/30

8/10

4/5

3 0
3 years ago
Use x for your variable.<br> The product of four more than a number and nine is fifteen.
nikitadnepr [17]

Answer:2

Step-by-step explanation:

Because 15= x+4+9

7 0
3 years ago
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