geno3141

If it's only magnified 1 time, then it isn't magified at all.

So, you need to take the size when magnified and reduce it by a factor of 1/800.

5.76mm x (1/800)  =  your answer

If you need further help, please post back. 

Replace x with -4, wherever there is an x:

     f(-4)  = 4·(-4)² + 5(-4) - 2

and simplify the right side.

One way is to create a table of values:

  x  |   y                                       Find the corresponding y-values for these x-values and then

 ______                                       plot the ordered pairs.

 -4  |

 -3  |

 -2 |

 -1 |

  0 |

  1 |

  2 |

  3 |

  4 |

8u  =  3u + 35                          

Since you have variable on both sides, get rid of the variables from one of the sides. I suggest that you get all the u's to one side and all the pure numbers to the other. Since the only pure number is on the right side, get all the u's to the left side. You do this by getting rid of the u's from the right side by subtracting 3u from both sides.

8u - 3u  =  3u - 3u + 35

       5u  =  35                              Now, get rid of the 5 by dividing both sides by 5.

  5u / 5  =  35 / 5

         u  =                      <--- How much is 35 divided by 5? That is your answer.

You can do this by plotting points:

  x  |   y                                 Complete this table; some of the values for x will have no values for y.

_______                                Also, because you need to find square roots, many of these will have

-9  |                                      two answer, one + and one -.

-4  |

-1  |

 0  |

 1  |

 4  |

 9  |

Starting with the formula:  C = (5/9)(F - 32), replace F with 62:   C = (5/9)(62 - 32)

Can you finish this? If not, post back.

Since there are 60 minutes in one hour.

6 minutes is only 1/10 of 60 minutes. 

If you assume that whatever is done in 6 minutes can continue to be done at the same rate for a whole hour,

then ten times as much can be done in an hour.

The answer will be ten times what was done in 6 minutes.

Now, you will need to calculate this ...

Write 4 1/2 as a common fraction:  9/2

Now:  9/2 x 9 = 9/2 x 9/1  =

Can you finish this?

Generally speaking, if you have fractions in an equation, the equation will be easier to solve if you get rid of all the fractions by multiplying each term by a common denominator.

With denominators of 8 and 4, use 8 as the common denominator:

8(c + 1/8)  =  8(c/4)           On the left side, use the distributive property:

8(c) + 8(1/8)  =  8(c/4)

8c + 1 = 2c                         Get all the c's to one side by subtracting 8c from both sides:

       1 = -6c

Can you finish it from here?

In general, the slope of a graph is the increase or decrease in the graph as you are going from the left to the right. If the graph is moving upward, it has a positive slope; if it is flat, its slope is zero; and, if it is falling, its slope is negative.