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Anna35 [415]
4 years ago
5

The graph of which function is decreasing over the interval (–4, ∞)?

Mathematics
2 answers:
snow_tiger [21]4 years ago
8 0

Answer:

b

Step-by-step explanation:

hope this helps

astraxan [27]4 years ago
4 0
Ok, logic
all of them are parabolas

1st and 3rd are opening up, so they defenitely increase, so no

decraseing
the vertex hs to be be at x=-4
y=a(x-h)^2+k
h has to be -4
y=a(x+4)^2+k
the answer is 2nd one or f(x)=-(x+4)^2+4
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Step-by-step explanation:

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Please help answer this question!! 20 points!!!!
Naily [24]

Answer:

Relative to such interrogate proposed, the answer is identified as 5520, if quantities ‘a’ and ‘b’ were to subject to define, given such conditions.

Step-by-step explanation:

Understood:

- Such quantity is a four (4) digit number, as explicitly stated.

- The value must be divisible by three (3). Thus, once the digits are summed, such quantity must be able to divide, and distribute evenly, into three (3).

- Likewise, such number is obligated to be divisible by five (5). Thus, the last digit of such quantity must end in either a ‘5’ or a ‘0’.

We were given the mathematical expression: 5a2b

5 + 2 = 7 + x = a number that is divisible by three, as stated in the problem.

X could be a list of differentiated number(s), although for a simplicity, x could be equated to as 5 to produce 12 (which is a factor of three, hence, divisible by three).

Now that ‘a’ has been substituted, ‘b’ must be substituted, similarly:

With ‘b’, we could appoint any number, so long that is either a 5 or 0 in the last digit, hence producing a value divisible my five.

For simplicity, which choosing either 5 or 0 does not make a difference, I will choose zero.

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7 0
3 years ago
Find the indicated probability.
emmainna [20.7K]

Answer:

P(A or B) = 0.9.

Step-by-step explanation:

This is a question of Venn probabilities.

We use the following relation to solve this question.

P(A \cup B) = P(A) + P(B) - P(A \cap B)

The exercise states that:

P(A) = 0.7, P(B) = 0.6, P(A \cap B) = 0.4

Then

P(A \cup B) = P(A) + P(B) - P(A \cap B) = 0.7 + 0.6 - 0.4 = 0.9

The answer is:

P(A or B) = 0.9.

5 0
3 years ago
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FinnZ [79.3K]
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6 0
4 years ago
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