A, since the graph is not in a "U" shape aka parabola the degree cant be 2 so C is wrong and B and D are negative fuctions while the graph is showing one that is positive.
Answer:
18) Area= 5*5/2=25/2=12.5 unit ^2
19) Area=AB^2V3/4=8a^2*V3/4=2V3a^2
Step-by-step explanation:
18. A(-3,0)
B(1,-3)
C(4,1)
AB=V(-3-1)^2+(0+3)^2=V16+9=V25=5
AC=V(-3-4)^2+(0-1)^2=V49+1=V50=5V2
BC=V(1-4)^2+(-3-1)^2=V9+16=V25=5
so AB=BC=5
and AC^2=AB^2+BC^2
so trg ABC is an isosceles right angle triangle (<B=90)
Area= 5*5/2=25/2=12.5 unit ^2
19. A(a,a)
B(-a,-a)
C(-V3a, V3a)
AB=V(a+a)^2+(a+a)^2=V4a^2+4a^2=V8a^2
AC=V(a+V3a)^2+(a-V3)^2=Va^2+2a^2V3+3a^2+a^2-2a^2V3+3a^2=V8a^2
BC=V(-a+V3a)^2+(-a-V3a)^2=V8a^2
so AB=AC=BC
Area=AB^2V3/4=8a^2*V3/4=2V3a^2
I would get $19 back if I gave the clerk $40
An equation is an expression used to show the relationship between two or more variables and numbers.
Total money spent on book and CD = $12 + $9 = $21
The money gotten back = $40 - $21 = $19
I would get $19 back if I gave the clerk $40
Find out more on equation at: brainly.com/question/2972832
Answer:
a(2) = -9
Step-by-step explanation:
It looks like you want the 2nd term in the arithmetic sequence defined by the recursive formula ...
- a(1) = -13
- a(n) = a(n -1) +4
Using the formula with n=2, we have ...
a(2) = a(1) +4
a(2) = -13 +4 . . . . substitute the value of a(1)
a(2) = -9
Answer:
<u>6x^3 -2x^2-11x + 4</u>
Step-by-step explanation:
(3x - 4)(2x^2 + 2x - 1)
(3x - 4)(2x^2 + 2x - 1)
[(3x)(2x^2 + 2x - 1)] + [-4(2x^2 + 2x - 1)]
6x^3 + 6x^2 - 3x -8x^2 - 8x + 4
6x^3 + [6x^2-8x^2] [- 3x- 8x] + 4
<u>6x^3 -2x^2-11x + 4</u>
