3 years ago

How to rotate 90 degree counterclockwise

Mathematics

1 answer:

Stella [2.4K]3 years ago

3 0

Rotate once to the left side

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Brilliant_brown [7]

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3 years ago

Maria read 3,356 pages in july and read 2,349 pages in August how many more pages did she read in july than in August?

Marina CMI [18]

3,356 - 2,349 = 1,007

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3 years ago

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Sue drank 2/3 liter of water Monday before going jogging. She drank 3/4 liter of water after her jog. How much water did Sue dri

Sedaia [141]

Answer:

17/12

Step-by-step explanation:

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3 years ago

Select the two values of x that are roots of this equation.<br>x + 2x - 6 = 0

VLD [36.1K]

For this case we must solve the following quadratic equation:

$x ^ 2 + 2x-6 = 0$

Where:

$a = 1\\b = 2\\c = -6$

The solution is given by:

$x = \frac {-b \pm \sqrt {b ^ 2-4 (a) (c)}} {2a}$

Substituting:

$x = \frac {-2 \pm \sqrt {2 ^ 2-4 (1) (- 6)}} {2 (1)}\\x = \frac {-2 \pm \sqrt {4 + 24}} {2}\\x = \frac {-2 \pm \sqrt {28}} {2}\\x = \frac {-2 \pm \sqrt {2 ^ 2 * 7}} {2}\\x = \frac {-2 \pm2 \sqrt {7}} {2}\\x = -1 \pm \sqrt {7}$

Thus, we have two roots:

$x_ {1} = - 1+ \sqrt {7}\\x_ {2} = - 1- \sqrt {7}$

ANswer:

$x_ {1} = - 1+ \sqrt {7}\\x_ {2} = - 1- \sqrt {7}$

8 0

3 years ago