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3 years ago

Is negative twelve a whole number,integer,or rational number?

Mathematics

2 answers:

mrs_skeptik [129]3 years ago

8 0

Its an Integer. Integers include negative numbers, zero and positive numbers :)

NARA [144]3 years ago

5 0

Negative 12 is an integer & so is positive 12 negatives & positives numbers are intergers

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Math Problem w Quadratics

oee [108]

Opyion B hope this help!

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3 years ago

A class of students raised $1,000 for charity Tyler raised $28

Leya [2.2K]

Answer:

44 dollars

Step-by-step explanation:

28 minus 5 is 23

67 minus 23 is 44

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3 years ago

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Write the number for six million fifty thousand.

const2013 [10]

Answer:

6,050,000

Step-by-step explanation:

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2 years ago

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Find the 4th term (x-y)^12

maria [59]

Answer:

The fourth term of the expansion is -220 * x^9 * y^3

Step-by-step explanation:

Question:

Find the fourth term in (x-y)^12

Solution:

Notation: "n choose k", or combination of k objects from n objects,

C(n,k) = n! / ( k! (n-k)! )

For example, C(12,4) = 12! / (4! 8!) = 495

Using the binomial expansion formula

(a+b)^n

= C(n,0)a^n + C(n,1)a^(n-1)b + C(n,2)a^(n-2)b^2 + C(n,3)a^(n-3)b^3 + C(n,4)a^(n-4)b^4 +....+C(n,n)b^n

For (x-y)^12, n=12, k=3, a=x, b=-y, and the fourth term is

C(n,3)a^(n-3)b^3

=C(12,3) * x^(12-3) * (-y)^(3)

= 220*x^9*(-y)^3

= -220 * x^9 * y^3

3 0

3 years ago

Find sin(a+B)

diamong [38]

Answer:

Cos A=5/13

we have

Cos² A= $1-Sin ²A$

25/169=1-Sin²A

sin²A=1-25/169

sin²A=144/169

Sin A= $\sqrt{144/169}=12/13$

again

Tan B=4/3

P/b=4/3

p=4

b=3

h= $\sqrt{3²+4²}=5$

Now

Sin B=p/h=4/5

in IV quadrant sin angle is negative so

Sin B=-4/5

CosB=b/h=3/5

Now

Sin(A+B):sinAcosB+CosAsinB

now 

substitute value

Sin(A+B):12/13*3/5+5/13*(-4/5)=36/65-4/13

=16/65 is a required answer

6 0

2 years ago