Answer:
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Step-by-step explanation:
Answer:
3,-3
Step-by-step explanation:
g(3)= (3)³+6(3)²-9(3)-54
= 27+54-27-54
=81-81
= 0
g(-3) = (-3)³+6(-3)²-9(-3)-54
= -27+54+27-54
= 27-27
= 0
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9514 1404 393
Answer:
- surface area: 456 cm²
- volume: 408 cm³
Step-by-step explanation:
The surface area of the figure is the total of the areas of the two triangular bases and the three rectangular faces.
SA = 2(1/2)(8 cm)(6 cm) + (17 cm)(6 cm + 8 cm + 10 cm)
= 48 cm² + 408 cm²
SA = 456 cm²
__
The volume is the product of the area of the triangular base and the length of the prism.
V = (1/2)(8 cm)(6 cm)×(17 cm) = (24 cm²)(17 cm)
V = 408 cm³
nswer:
B
C
=
24
Explanation:
The triangle is isosceles, because (from the diagram) ∠
A
B
C
=
∠
A
C
B - note how the angle there is marked on both of these. If these angles are equal, this means that the sides
A
C
=
A
B
let A
C
=
A
B
x
+8=2x-1
8
=
x
−
1
x
=
9
We want to find the length of
B
C
, which is (
3
x
−
3
)
. We know that x
=
9
B
C
=3
x
−
3
B
C
=
3
(
9
)
−3
B
C
=
27
−
3
B
C
=
24
