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3 years ago

Over which interval is the graph of f(x) = –x2 + 3x + 8 increasing?

Mathematics

2 answers:

Juliette [100K]3 years ago

5 0

Graphing the equation, it is increasing at (–∞, 1.5)

zalisa [80]3 years ago

4 0

Hello,

Answer A: (-infini,3/2)
Vertex is (3/2,41/4) and the curve is turning its concavity down.
f'(x)=-2x+3=0==>x=3/2

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What are the zeros of f(x) = x^2-13x+40

Nesterboy [21]

Answer:

8 and 5

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.Step-by-step explanation:

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SOVA2 [1]

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Nat2105 [25]

Answer:

1. 5040

2. 20

Step-by-step explanation:

1. using the formula for permutation

nPr=n!/(n-r)!

10P4 = 10!/(10-4)!

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then we are left with

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4 0

3 years ago

The net of a square pyramid is shown

Wewaii [24]

Answer:

Option (D)

Step-by-step explanation:

Surface area of a square pyramid is determined from the formula,

Surface area = Area of the square base + 4(Area of one lateral triangular side)

Area of the base = (Side)²

= 8²

= 64 cm²

Area of one lateral triangle = $\frac{1}{2}(\text{Base})(\text{Height})$

= $\frac{1}{2}(8)(8)$

= 32 cm²

Therefore, surface area of the square pyramid = 64 + 4(32)

= 64 + 128

= 192 cm²

Therefore, Option (D) will be the correct option.

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