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Semmy [17]
3 years ago
13

4x-8y=16what is the domain?

Mathematics
1 answer:
olga_2 [115]3 years ago
8 0

Answer:

The answer is 4x

Step-by-step explanation: This is because all of the domains are usually in the dominant variable which in most cases is x

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Principal, $2000; Annual interest rate, 5.3%; time, 2 years<br> After 2 years?
dangina [55]

Answer:

212 and I= 2000+212

              =2212

Step-by-step explanation:

3 0
3 years ago
Show that cos(3x) = cos3(x) − 3 sin2(x)cos(x). (Hint: Use cos(2x) = cos2(x) − sin2(x) and the cosine sum
otez555 [7]

<u>Step-by-step explanation:</u>

To prove:

\cos 3x=\cos^3x-3\sin^2 x\cos x

Identities used:

\cos(A+B)=\cos A\cos B+\sin A\sin B      ......(1)

\sin 2A=2\sin A\cos A        ........(2)

\cos 2A=\cos^2A-\sin^2 A     .......(3)

Taking the LHS:

\Rightarrow \cos 3x=\cos (x+2x)

Using identity 1:

\Rightarrow \cos (x+2x)=\cos x\cos 2x-\sin x\sin 2x

Using identities 2 and 3:

\Rightarrow \cos x(\cos ^2x-\sin^2 x)-\sin x(2\sin x\cos x)\\\\\Rightarrow \cos^3x-\sin^2x\cos x-2\sin^2 x\cos x\\\\\Rightarrow \cos^3x-3\sin^2x\cos x

As, LHS = RHS

Hence proved

4 0
3 years ago
What is as 8 hundred is 8 thousand
Irina-Kira [14]
Not quite understand the question. We assume that the issue of ratios of numbers of 800 and 8000.
 Then 800 is one-tenth of the 8,000 800 other words is 10% of 8000.
Conversely, 8000 it ten times at 800 and 1000% of 800.
5 0
3 years ago
10. How many cubic inches of material do you need to make a solid rubber ball with a diameter of 3 in.? Round your answer to two
ale4655 [162]
What is asked in the problem is simply the volume of the solid rubber ball. The volume of sphere given the diameter may be calculated by,
  
                               V = πd^3 / 6

Substituting the given value of diameter, 
 
                               V = (π x 3³) / 6 = 9π/2 or 14.14

Thus, one needs approximately 14.14 in³ of material. 

3 0
3 years ago
Read 2 more answers
HELP ASAP PLEASE HELP QUICK!!!!
masha68 [24]

Answer:

4:5 that's last answer i got

6 0
3 years ago
Read 2 more answers
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