Jillian said StartRoot 25 EndRoot is irrational because it is a square root. Why is she incorrect? Jillian is incorrect because the square root of StartRoot 25 EndRoot = 5.5. Jillian is incorrect because a square root is always rational. Jillian is incorrect because square roots of perfect squares are rational. Jillian is incorrect because the decimal expansion of StartRoot 25 EndRoot is a repeating decimal.

Jillian is incorrect because square roots of perfect squares are rational.

Step-by-step explanation:

√25 = √(5²) = 5 - rational

25 is perfect square.

C

Step-by-step explanation:

Square root of perfect square are rational.

A rational number is one that has a finite point meaning it can be changed to a proper fraction.

For example;

√6 =2.44948 and it continues.

It has not finite point hence this is irrational.

While

√25 = 5

It has a finite point.

(0,-3) see attached graph

step-by-step explanation:

a. to solve the system, graph the two equations.

x = y+3 becomes y=x-3 has m=1/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move up 1 unit and 1 unit to the right. plot a point and connect.

y=-4x+3 has m =-4/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move down four units and to the right 1 unit. plot a point and connect.

the solution is the point (x,y) where the two lines intersect. by the graph below it is (0,-3).

b. to solve by substitution, substitute y = -4x-3 into x= y+3

x= (-4x-3) +3

x=-4x

5x=0

x=0

now substitute x = 0 back in to find y.

y= -4(0)-3

y=0-3

y=-3

solution is (0,-3)

c. use elimination by adding the equations together.

x-y=3

4x+y=-3

5x=0

x=0

then substitute into one equation to find y.

y=-4(0)-3

y=-3

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step-by-step explanation: