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92

Step-by-step explanation:

Substitute 30 for c and 8 for d into the expression.

2(30) + 4(8)

Multiply.

60 + 32

Simplify by adding the two terms.

92

2c + 4d= 92

Step-by-step explanation:

In order to get this answer, you have the values for c and d. You now plug in the numbers to replace the variable. So now, for 2c you have 2x30 and for 4d you have 4x8. You multiply because when using variables, there is no sign and when there is no sign it means to multiply. After you solve for 2x30 you should get 60 and after you solve for 4x8 you should get 32. You now add up 60+32 to get 92. Hope this helps! :)

y = 2x

step-by-step explanation:

if you divide each number in the sequence, you'll see that they all have a multiple factor of 2. each number in the series, and any other numbers which may continue, will be multiplied by 2. therefore, y is the next number in the sequence, and x is the current one, so, our formula will be y = 2x.

hope it you

step-by-step explanation:

sin(7pi/6 - pi/3)  

= sin(7pi/6 - 2pi/6)  

= sin(5pi/6)  

= sin(pi - pi/6)  

= sin(pi/6)  

= 1/2  

sin 7pi/6 - sin pi/3  

= sin (pi + pi/6) - sin pi/3  

= -sin pi/6 - sin pi/3  

= -1/2 - sqrt(3)/2  

= -(1+sqrt(3))2