Area of a triangle: A= 1/2(base)(hieght)
base=x
height= 6(base)+1= 6x+1
13= 1/2 × (x)(6x+1)
(get rid of 1/2 by multiplying each side by 2)
26= (x)(6x+1)
26= (x × 6x)= 6x² (x × (+1))= x
26= 6x² + x
0= 6x²+x-26
Are either of those the answers? If not, list the options and I will be able to tell you which one is correct. Hope this helped!
Answer:
A
Step-by-step explanation:
x = 0
y = -3
Answer:
(a)0,2 1,-1 2,-4 3,-7 (b) yes
Answer:
x must be 5
Step-by-step explanation:
Recall that the area formula for a trapezoid is
A = (average of base lengths)(width)
Here we have
17 cm + x
(average of base lengths) = 11 cm = ----------------
2
So 2(11 cm) = 17 cm + x, or
22 cm = 17 cm + x
Then x must be 5.
Answer:
2400cm²
Step-by-step explanation:
The formula for surface area of a cube is 6a² where a is the length of one side of the cube.
Given a=20 cm the surface area of the cube is ;
6*20²= 6*400=2400cm²
