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andreev551 [17]
3 years ago
5

"Name the property:a + (b+12) = (a+b) + 12"

Mathematics
1 answer:
vfiekz [6]3 years ago
8 0

Answer:

This property would be the Associative property of addition.



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How do you this question? Please explain.
Nuetrik [128]

Answer:

(C) 2√15

Step-by-step explanation:

Recognize that all the triangles are right triangles, so are similar to each other. In these similar triangles, the ratio of the short side to the long side is the same for all.

... CB/CA = CT/CB

... CB² = CA·CT = 10·6 = 60 . . . . . . . . . . multiply by CA·CB; substitute values

... CB = √60 = 2√15 . . . . . . . take the square root; simplify

_____

<em>Comment on this solution</em>

The altitude to the hypotenuse of a right triangle (CB in this case) divides the hypotenuse into lengths such that the altitude is their geometric mean. That is ...

... CB = √(AC·CT) . . . . as above

This is true for any right triangle — another fact of geometry to put in your list of geometry facts.

3 0
3 years ago
If f(1) = 7 and f(n) = 5(n-1) + 2, then f(4) =
Igoryamba

Answer:

17

Step-by-step explanation:

f(n)=5(n-1)+2

f(4)=5(4-1)+2

=5×3+2

=17

hope it helps

plz. mark as brainliest

4 0
3 years ago
What type of number is - 5.41
Romashka [77]

Answer:

irrational number i believe

Step-by-step explanation:

3 0
3 years ago
What is the answer 9c-5=13?
riadik2000 [5.3K]
C is 2 because you have to move the 5 so you add 5 to 13 which is 18 then divide both sides by 9 so it's 2
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3 years ago
On a pleasant Monday, the Dow-Jones Industrial average closed at 11,315. On Wednesday, it closed down twice as many points as it
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I think it lose 1533 points
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