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2 years ago

Enter an equation for the word sentence. Use the variable n.

Mathematics

1 answer:

Usimov [2.4K]2 years ago

6 0

Answer:

$n + 4.4 = 8.1$

Step-by-step explanation:

We know we have to write an algebraic equation for the sentence - so "translate" the phrases of the sentence step-by-step. Let the unknown number be represented by the variable n, as the question states.

Start with the phrase "the sum of a number and 4.4." A sum comes as a result of adding numbers together - therefore the first part of the equation must be $n + 4.4$ .

Next, the sentence says "is 8.1." The "is" indicates that the expression we just wrote equals something, so that number must be 8.1. Therefore, the whole equation must be $n + 4.4 = 8.1$ .

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wlad13 [49]

Answer:

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Step-by-step explanation:

From the graph, we can see that y = -1 when x = 0.

So to check whether which of the given options is the equation of the given graph, we will set our calculator to the radian mode and then plug the value of x as 0.

1. y = cos(x + pi/2) = cos(0 + pi/2) = 0

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3 years ago

An article claims that 12% of trees are infested by a bark beetle. A random sample of 1,000 trees were tested for traces of the

inna [77]

Answer: 0.6812

Step-by-step explanation:

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As per given: p= 12%= 0.12

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So, $z=\dfrac{0.127-0.12}{\sqrt{\dfrac{0.12\times 0.88}{1000}}}$

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Hence, the value of the z-test statistic = 0.6812 .

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3 years ago

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Deffense [45]

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2 years ago

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lilavasa [31]

Answer:

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