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Mathematics

1 answer:

Ipatiy [6.2K]3 years ago

5 0

Draw a vertical line at the number 4 on your x axis positive side which is x=4

Then anything on the left of this line you just created at x=4 will be less than 4. But since your inequality is x less than/equal to 4 it includes 4 as well.

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Please add explanation as well.

Marianna [84]

It is the first one. Three times a number means 3x. The sum of 3x and 7 is 3x + 7 because sum means additions. And 3x + 7 is greater than four times the number which is 4x and greater than is this symbol >. So 3x + 7 > 4x

3 0

3 years ago

Sinx + cosx= 1 then find the value of x

Kobotan [32]

$1√2sinx+1√2cosx=1√2.

This can be written as

cos(x−π4)=cos(π4)

The general solution of this equation ls

x−.π4=2nπ±π4,n=0,±1,±2,...,

So, x=2nπandx=(4n+1)π2,n=0,±1,±2,±3....

 ANSWER: x=2nπandx=(4n+1)π2,n=0,±1,±2,±3....$

4 0

3 years ago

Need help solving please

zzz [600]

Answer:

Step-by-step explanation:

because u have to single out the 3 x by subtracting 2 on both sides

8 0

3 years ago

How do you work out this problem? 3x+15=66

vivado [14]

3x + 15 = 66