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Nonamiya [84]
3 years ago
5

Given the function f(x)=-8x2+8x+9,state whether the vertex represents a maximum or minimum point for the function.

Mathematics
1 answer:
Lelechka [254]3 years ago
5 0
8x2+8x+9
=16x+8x+9
=24x+9
Are that right
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Calculate the sum of the infinite series
andriy [413]
ANSWER

S_ \infty = \frac{40}{3}

EXPLANATION

The given series is

20-10+5-...


The first term of the series is,

a_1=20

The common ratio of this series is,

r = \frac{ - 10}{20}

This simplifies to,

r = - \frac{1}{2}

The sum to infinity of this sequence is given by the formula,

S_ \infty = \frac{a_1}{1-r}

We substitute the above values into the formula to obtain,

S_ \infty = \frac{20}{1- - \frac{1}{2} }

This simplifies to,

S_ \infty = \frac{20}{1 + \frac{1}{2} }

We simplify the denominator to get,

S_ \infty = \frac{20}{ \frac{3}{2} }

This will finally give us,

S_ \infty =20 \times \frac{2}{3}

S_ \infty = \frac{40}{3}

The correct answer is A.
5 0
3 years ago
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A map shows a scale of 5cm = 40 miles. The distance from Los Angeles, CA to San Francisco, CA is 400 miles. How far apart will t
nadezda [96]

Answer:

C. 50cm

Step-by-step explanation:

40 * 10 = 400miles

5 * 10 = 50cm

8 0
2 years ago
Help me please help me help me please
NeTakaya
P = 2(l+w)
120 = 2(35+w)
120/2 = 35+w
60 = 35 + w
60 -35 = w
25 = w

so width = 25

answer is b. 25 meters
7 0
3 years ago
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Daija graphed the relationship modeled by the equation y = 4x.
GenaCL600 [577]
The y intercept is (0,0) and the slope is 4
3 0
3 years ago
At a pet store the ratio of cats to dogs sold was 5 : 3. If there were 40 cats that were sold, how many dogs were sold?
Anna [14]

Answer:24 dogs

Step-by-step explanation:8x3

3 0
3 years ago
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