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Nesterboy [21]
3 years ago
6

60 is 45% of what number?

Mathematics
2 answers:
MAXImum [283]3 years ago
7 0
<span><span>We have, 45% × x = 60, 
</span><span>
or, 45/100 × x = 60
</span><span>
Multiplying both sides by 100 and dividing both sides by 45,
we have x = 60 × 100/45</span><span>x = 133.33
If you are using a calculator, simply enter 60×100÷45, which will give you the answer, which is 133.333</span></span>
pshichka [43]3 years ago
5 0
60 is 45 percent of about 133.
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b

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Which correctly describes how the graph of the inequality 6y − 3x &gt; 9 is shaded? A. Above the solid line B. Below the solid l
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Criminal investigators use biometric matching for fingerprint recognition, facial recognition, and iris recognition. When matchi
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Type I error.

Step-by-step explanation:

Let's remember the definition of Type I error and Type II error:

A type I error is the rejection of a true null hypothesis, this means that we would get a "false positive" with this error.

A type II error is the non rejection of a not true null hypothesis, this error would give us a "false negative".

In this problem, we are told that the mean match score to identify a suspect is 80. However, the test shows that the mean match score is more than 80 when the person doesn't have a fingerprint match (and therefore the person would not be a suspect). Therefore, this person would appear as a suspect when he/she really isn't one. This means that the test is giving a "false positive". Thus, this is a type I error.

6 0
3 years ago
Solve x2 + 1/2x +1/16=4/9
kolezko [41]

<u>Answer:</u>

x = 0.417 or x = -0.917

<u>Step-by-step explanation:</u>

We are given the following expression and we are to solve it for the variable x:

x ^2 + \frac { 1 } { 2 } x + \frac { 1 } { 1 6 } = \frac { 4 } { 9 }

We will find the least common multiple of 2. 6 and 9:

x^2 \times 144 +\frac{1}{2}x \times 144 +\frac{1}{16} \times 144 = \frac{4}{9} \times 144

Simplifying it to get:

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144x^2+72x+9-64=0

144x^2+72x-55=0

Using the quadratic formula to solve for x:

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x=\frac{-72 \pm\sqrt{72^2-4(144)(-55)} }{2a}

x=\frac{5}{12} or 0.417

x=-\frac{11}{12} or -0.917

3 0
4 years ago
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