Evan has $0.45 worth of pennies and nickels. He has a total of 21 pennies And Nickels All together. Determine the number of pennies in the number of nickels that Evan has.

first of all you to multiple the decimal number by 100 to get a normal number.

o.45 . 100 = 45

x = number of pennies

y =number of nickels

x+y= 21

1x + 5y = 45

x+ y= 21

y = -x+ 21

1x+ 5( -x+21)=1x-5x+105= -4x+105

105 % -4= the number of x

to find the number of y you have to minus the number of x from 21.

Step-by-step explanation:

step-by-step explanation:

we are given a graph for system of inequalities.

in order to write the system of inequalities for the given graph, we need to find the inequality for each of the line separately.

let us find the slope of dotted line first.

taking two coordinates on the graph.

let us say (0,0) and (3,1).

let us find the slope of the line now.

slope of the dotted line would be =.

y-intercept of dotted line is y=0 only.

plugging slope m= and b=0 in slope-intercept form y=mx+b, we get

.

the line is shaded up of that dotted line.

therefore, for shading up we would take greater than inequality symbol > .

and because it's a dotted line we would take only > symbol in place of = sign in above equation of line.

therefore, inequality for dotted line would be

let us take two points (3,1) and (0,4) on the solid line.

slope of the solid line would be =.

for the solid line we have y-intercept b= 4.

plugging slope m= -1 and b=4 in slope-intercept form y=mx+b, we get

y = -1x + 4.

the line is shaded down of that solid line.

therefore, for shading down we would take less than inequality symbol < .

and because it's a solid line we would take ≤ symbol in place of = sign in above equation of line.

therefore, inequality for solid line would be

the k side

step-by-step explanation:

plese mark mde brainliest!