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pogonyaev
3 years ago
10

Jenna said that she took 4 milliliters of medicine when she was sick. Is this a reasonable statement? Explain.

Mathematics
1 answer:
Yuri [45]3 years ago
4 0

Answer: yes this is a resonable anser because some medicine is stronger than others.

Step-by-step explanation:

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The value 5 is an upper bound for the zeros of the function shown below.
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Answer:

The given statement that value 5 is an upper bound for the zeros of the function f(x) = x⁴ + x³ - 11x² - 9x + 18  will be true.

Step-by-step explanation:

Given

f\left(x\right)\:=\:x^2\:+\:x^3\:-\:11x^2\:-\:9x\:+\:18

We know the rational zeros theorem such as:

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then f(c) = 0.

As the f\left(x\right)\:=\:x^2\:+\:x^3\:-\:11x^2\:-\:9x\:+\:18 is a polynomial of degree 4, hence it can not have more than 4 real zeros.

Let us put certain values in the function,

f(5) = 448, f(4) = 126, f(3) = 0, f(2) = -20,

f(1) = 0, f(0) = 18, f(-1) = 16, f(-2) = 0, f(-3) = 0

From the above calculation results, we determined that 4 zeros as

x = -3, -2, 1, and 3.

Hence, we can check that

f(x) = (x+3)(x+2)(x-1)(x-3)

Observe that,

for x > 3, f(x) increases rapidly, so there will be no zeros for x>3.

Therefore, the given statement that value 5 is an upper bound for the zeros of the function f(x) = x⁴ + x³ - 11x² - 9x + 18  will be true.

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A car travels at a speed of 85 miles per hour. How far will it travel in 15 mins?
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In this question, we're trying to find how many miles a car travels in 15 minutes.

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To find this, we would divide 85 by 60.

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The car drives at a speed of about 1.42 per minute.

We need to know how far it goes in 15 minutes, so multiply 1.42 by 15.

1.42 · 15 = 21.3

The car travels at a approximately 21.3 miles in 15 minutes.

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Plzz answer I will give brainiest and 60 points
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Answer:

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Step-by-step explanation:

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