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Studentka2010 [4]
3 years ago
10

Given that fx=2x2-4x+1, then f(-1)is.​

Mathematics
1 answer:
oksian1 [2.3K]3 years ago
5 0

Answer:

f(-1)=7

Step-by-step explanation:

I am going to assume your question meant the equation

f(x)=2x^{2} -4x+1

So f(-1) can be found by substituting all the x terms in the equation with -1

f(-1)=2(-1)^{2} -4(-1)+1

And simplifying for our answer

f(-1)=2(1)+4+1

f(-1) = 2+4+1

f(-1)=7

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Silicone rubber is used.

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A measurement template with a historcal value of 25.500 is measured 27 times and a mean value of 25.301 is recorded. What is the
QveST [7]

Complete Question

A measurement template with a historical value of 25.500 mm is measured 27 times and a mean value of 25.301 mm is recorded. What is the percent bias when the tolerance is +/- 0.3?

Answer:

The percent bias is  B = 33.167 \%  

Step-by-step explanation:

From the question we are told that

   The historical value  is  S = 25.00 \ mm

   The number of times it is measured is  n  =  7  

    The mean value is  \= x = \frac{\sum x_i }{n} = 25.301 \ mm

    The tolerance is  t =\pm 0.3 = 0.3 - (-0.3) = 0.6

Generally the percent bias is mathematically represented as

      B = 100 * \frac{\= x - \tau }{ t}

=>  B = 100 * \frac{25.301 - 25.5000 }{0.6}

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3 years ago
I don't understand how to solve this. Can someone help me?
Marat540 [252]

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Find the sum. Write your answer in simplest form. 3/7 + 2/3​
Delicious77 [7]

Answer:

1 2/21

Step-by-step explanation:

We start out with:

3/7 + 2/3

In order to add them together, they must have an equal denominator. An easy way to find an equal denominator is the cross method. We divide 7 by 3 and 3 by 7, giving us a denominator of 21:

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But what about the numerators? You do the same thing as before (multiplying by the other's denominator).  Now we have:

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≧◡≦

Mocha here! If this answer helped you, please consider giving it brainliest because I would appreciate it greatly. Have a wonderful day!

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disa [49]

Answer:

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This is what we call a mapping;

Functions do not give multiple output values for a given input value;

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