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2 years ago

9

you have learned about the associative (grouping ) property of addition. it says that you can group add ends in any way and sum

will be the same. how do you use the associative property when you break apart addends? Give a example

1 answer:

sasho [114]2 years ago

3 0

Go to khanacademy.com and search up associative property of addition

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Help:<br> <img src="https://tex.z-dn.net/?f=1.%5C%20%26x%5E4-61x%5E2%2B900%3D0%20%5C%5C%202.%20%5C%20%26%20x%5E4-25x%5E2%2B144%3

yawa3891 [41]

$\bf{1) \ x^4-61x^2+900=0 }$

Applying the factorization method, for example:

$\bf{ 0=(x^2)^2-61(x^2)+900=(x^2-36)(x^2-25)}$

$\bf{\\ &=(x+6)(x-6)(x+5)(x-5); }$

$\bf{ x_1=6 \quad x_2=-6 \quad \ \ \ x_3=5 \quad x_4=5 }$

$\bf{2) \ x^4-25x^2+144=0 }$

Applying the factorization method:

$\bf{0&=(x^2)^2-25(x^2)+144=(x^2-16)(x^2-9) }$

$\bf{ =(x-4)(x+4)(x-3)(x+3); }$

$\bf{ x_1=4 \quad x_2=-4 \quad x_3=3 \quad x_4=-3 }$

7 0

1 year ago

What is the equation of this line?

Juli2301 [7.4K]

Answer:

Not sure but i think its C. y=-2x-3

8 0

2 years ago

Read 2 more answers

Choose Yes or No to tell if each statement is true.

aivan3 [116]

Answer:

false,true,false,true

Step-by-step explanation:

not 100% sure

hope it helped

:)

4 0

2 years ago

Read 2 more answers

Eduardwww [97]

Answer:

A choice

Step-by-step explanation:

sec is defined as 1/cos.

cos is again defined as adjacent to hypotenuse.

We know that adjacent is x and hypotenuse is r.

Therefore:- cos is x/r

Now sec is 1/cos = 1/(x/r)

1 ÷ x/r is 1•r/x

Thus:-

sec is r/x

3 0

2 years ago

PLZ HELP I DONT UNDERSTAND A password for a security system must consist of a eater followed by two digits. How many possible pa

Talja [164]

Answer:

7020

Step-by-step explanation:

The letter could be any 1 of the 26 and it could be placed in any 1 of 3 places so this makes 26*3 = 78 possibilities.

For each of these there is any one of permutations of 2 digits from 10

= 10P2 = 10! / 8! = 10*9 = 90.

So the answer is 78 * 90 = 7020.

Note I am assuming that the 2 digits picked are different - no duplicates.

please mark me brainliest!

4 0

2 years ago