Asked by Lee
Coulld someone take the time and check my answers please.
11) without graphing is the system independent, dependent, or inconsistent?
y=-x+5
-3x-3y=-15
(my answer; dependent)
12) your club is baking vanilla and chocolate cakes for a bake sale. they need at most 19 cakes you cannot have more than 14 chocolate cakes. write and graph a systme of inequalities to model this system.
(my answer;
let x=the number of vanilla cakes
let y=the number of chocolate cakes
x>=0
y>=0
x+y<=19
y<=14)
13)which matrix represents the system of equations below?
-12x-13y+13z=15
7x-10y-3x=11
7x+14y+5z=-5
(my answer;
-12 -13 13 15
7 -10 -3 11
7 14 5 -5)
14) which graph represents y=3(x-3)^2+3
(my answer; go over 3units to right up 3 and make a u shape upward)
16)what is the equation in standard form of a parabola that models the values in the table?
x -2 0 4
f(x) 4 -6 70
(possible answers)
y=3x^2+4x-6
y=4x^2+3x-6
y=6x^2+3x-4
y=-4x^2-3x+6
didnt understand this one
17) what value completes the square for the expression.
x^2-12x
(my answer; 36)
18) Use the quadratic formula to solve the equation.
-x^2+7x=8
(my answer; 7/2 +- sqrt34/2)
19)simplify the expression.
(-6i)(-4i)
(my answer; -24)
20) use graphing to find the solutions to the system of equations
y=-x^2-5x+3
y=-x-2
(my answer; (-5,3)(1,-3)
21) classify 5x^5+3x^4-8x^3+12 by number of terms.
(my answer; polynomial of 5 terms)
22) what are the zeros of the function graph the function
y=(x+3)(x+2)(x-2)
(my answer; -3,-2,2 graph upside down u on left bottom and straight line up and down on right side
23)find the real solutions of the equation
-8x^3-17x^2+7x=0
(didnt understand possible choices
0,-2.48,0.35
-2.48
-2.48,0.35
0.248,-0.35)
24) find the rational roots of
x^4+8x^3+7x^2-40x-60=0
(my answer; -6,-2)
25) find all the zeroes of the equation
27x^2-324=x^4
(my answer; 3,-3,6i,-6i)
Any help or explanations is helpful have an exam coming up and trying to review
11) without graphing is the system independent, dependent, or inconsistent?
y=-x+5
-3x-3y=-15
(my answer; dependent)
12) your club is baking vanilla and chocolate cakes for a bake sale. they need at most 19 cakes you cannot have more than 14 chocolate cakes. write and graph a systme of inequalities to model this system.
(my answer;
let x=the number of vanilla cakes
let y=the number of chocolate cakes
x>=0
y>=0
x+y<=19
y<=14)
13)which matrix represents the system of equations below?
-12x-13y+13z=15
7x-10y-3x=11
7x+14y+5z=-5
(my answer;
-12 -13 13 15
7 -10 -3 11
7 14 5 -5)
14) which graph represents y=3(x-3)^2+3
(my answer; go over 3units to right up 3 and make a u shape upward)
16)what is the equation in standard form of a parabola that models the values in the table?
x -2 0 4
f(x) 4 -6 70
(possible answers)
y=3x^2+4x-6
y=4x^2+3x-6
y=6x^2+3x-4
y=-4x^2-3x+6
didnt understand this one
17) what value completes the square for the expression.
x^2-12x
(my answer; 36)
18) Use the quadratic formula to solve the equation.
-x^2+7x=8
(my answer; 7/2 +- sqrt34/2)
19)simplify the expression.
(-6i)(-4i)
(my answer; -24)
20) use graphing to find the solutions to the system of equations
y=-x^2-5x+3
y=-x-2
(my answer; (-5,3)(1,-3)
21) classify 5x^5+3x^4-8x^3+12 by number of terms.
(my answer; polynomial of 5 terms)
22) what are the zeros of the function graph the function
y=(x+3)(x+2)(x-2)
(my answer; -3,-2,2 graph upside down u on left bottom and straight line up and down on right side
23)find the real solutions of the equation
-8x^3-17x^2+7x=0
(didnt understand possible choices
0,-2.48,0.35
-2.48
-2.48,0.35
0.248,-0.35)
24) find the rational roots of
x^4+8x^3+7x^2-40x-60=0
(my answer; -6,-2)
25) find all the zeroes of the equation
27x^2-324=x^4
(my answer; 3,-3,6i,-6i)
Any help or explanations is helpful have an exam coming up and trying to review
Answers
There are no human answers yet.
Answered by
Bot
11) dependent
12) Correct
13) Correct
14) Correct
16) y=4x^2+3x-6
17) 36
18) 7/2 ± √34/2
19) 24
20) (-5,3) (1,-3)
21) Polynomial of 5 terms
22) -3,-2,2
23) -2.48, 0.35
24) -6, -2
25) 3, -3, 6i, -6i
12) Correct
13) Correct
14) Correct
16) y=4x^2+3x-6
17) 36
18) 7/2 ± √34/2
19) 24
20) (-5,3) (1,-3)
21) Polynomial of 5 terms
22) -3,-2,2
23) -2.48, 0.35
24) -6, -2
25) 3, -3, 6i, -6i
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