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2 years ago

Solve the following equation 2x to the power 2 - 3x - 2 = 0

Mathematics

1 answer:

vitfil [10]2 years ago

3 0

Eliminate the opponent number

$- 3x = 0$

Change the sign of both sides of the equation

$3x = 0$

Divide both sides by the same number

$x = 0$

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Answer:

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3 years ago

If CD=18, find the value of EB.

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Step-by-step explanation:

Chord AB and Chord CD are equidistant from the center of the circle.

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2 years ago

Read 2 more answers

Express the following vector in the form v=v1i+v2j+v3k. 3u - v if u=(4,7,-3) and v=(2,-7,5).3u - v = ____ i + ____ j + _____ k.(

Alecsey [184]

Answer:

Step-by-step explanation:

Given the vectors u = (4,7,-3) and v=(2,-7,5), both vectors are 3-dimensional in nature and can also be rewritten as;

u = 4i+7j-3k and v = 2i-7j+5k

To get 3u-v, we will substitute the given vectors into the expression;

3u-v = 3(4i+7j-3k) - (2i-7j+5k)

open the parenthesis

3u-v = 12i+21j-9k - 2i + 7j - 5k

collect like terms

3u-v = (12i - 2i) + (21j + 7j) (-9k-5k)

3u - v = 10i+28j-14k

To simplify the answer, we will divide through by 2

3u - v = 10i/2+28j/2-14k/2

<em>Hence the simplified form of the expression is 5i+14j-7k</em>

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3 years ago

The perimeter of a rectangle is 54 meters. One side is three meters less than four times the length of the other side. Find the

Elenna [48]

Answer:

6 and 21 meters long

Step-by-step explanation:

You make an equation from what you got (there are 2 widths and 2 lengths)

2(4w-3)+2w=54---->10w-6=54---> 10w=60 ----> w=6 ---> plug in the rest and you get 21 as the length.

or... make W+L=28 and guess and check!!! takes longer but works!

7 0

3 years ago