Ayudenme porfavorr, es un problema de razonamiento matematico

Mathematics

1 answer:

Evgesh-ka [11]2 years ago

5 0

Answer:

Step-by-step explanation:

count them all together and the right triangles add an additional number of triangles so there are 16 altogether

plus I don't know how you would get the other answers because that is the only one that makes sense if you are including overlapping and stuff because there are technically only 3 triangles actually shown here without taking out any other lines or ignoring them but for your purposes there are 16

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Simplify (3x+2)(x-7)

vovangra [49]

The answer is
$3 {x}^{2} - 19x - 14$
first you must multiply or use the FOIL method (First, Outer, Inner, Last)
First you multiply the first terms
$(3x)(x)$
this gives you 3x^2, then you multiple the outer terms
$( - 7)(3x)$
this gives you -21x, then you multiply the inner terms
$(2)(x)$
that gives you 2x, finally you multiply the last terms
$(2)( - 7)$
that gives you 14, now you combine like terms
$- 21x + 2x = - 19x$
now you put all the terms together and end up with your solution
$3 {x}^{2} - 19x - 14$

8 0

3 years ago

Read 2 more answers

Peter plans to build a tree house in his back yard. He needs to know how many square feet of lumber he should buy for the floor.

11Alexandr11 [23.1K]

Answer:

20n

Step-by-step explanation:

Multiply square feet per person times the number of persons to find square feet.

The units analysis looks like this:

$\dfrac{\text{ft}^2}{\text{person}}\times \text{persons}=\text{ft}^2\\\\20\dfrac{\text{ft}^2}{\text{person}}\times n\,\text{persons}=20n\,\text{ft}^2$