From the set {77, 78, 79}, use substitution to determine which value of x makes the equation true. 3x = 231

77

Step-by-step explanation:

Substitution pretty much involves replacing a value (in this case, the letter x) with another value (from the set).

To make 3x = 231 true, we have to replace x with each element in the set and see if the equation holds.

{77, 78, 79}

77

3(77) = 231 This is correct

78

3(78) = 234 This is incorrect!

79

3(79) = 237 This is incorrect!

the required function is .

step-by-step explanation:

from the given table it is noticed that the graph passing through (-3,7), (0,4), (3,1) and (8,-4).

it is a linear function because the value of y is decrease by one as the value of x increase by 1.

the slope of the function is

the slope of the function is -1 and the y-intercept is 4.

the slope intercept form is

where, m is slope and b is y-intercept.

therefore the required function is . the graph of this function is shown below.

51

step-by-step explanation:

73-22=51 the   mass number minus the amount of protons gives you the amount of neutrons