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4 years ago

What’s the value of x

Mathematics

2 answers:

lubasha [3.4K]4 years ago

6 0

The answer is 3radical 2

jenyasd209 [6]4 years ago

4 0

Answer:

The correct answer is last option 3√2 units

Step-by-step explanation:

From the figure we can see that two small right angled triangle.

These two triangle combined to form a large right angled triangle.

<u>To find the value of x</u>

Consider the small triangle with hypotenuse x and one side 3 units.

The angles of this triangle be 45°, 45° and 90°, then the sides are in the ratio 1 : 1 : √2

Therefore we can write,

3 : 3 : x = 1 : 1 : √2

x = 3√2

The correct answer is last option 3√2 units

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3 years ago

The midpoint of AB is M(1, -4). If the coordinates of A are (-3,-6), what are the coordinates of B?

kramer

Answer:

The coordinates of B is (5,-2)

Step-by-step explanation:

In order to find the coordinates of B, you have to use midpoint formula. Then substitute the following values into the formula :

$m = ( \frac{x1 + x2}{2} , \frac{y1 + y2}{2} )$

Let (x1,y1) be A (-3,-6),

Let (x2,y2) be B,

Let midpoint be M (1,-4),

$(1, - 4) = (\frac{ - 3 + x2}{2} , \frac{ - 6 + y2}{2} )$

$by \: comparison, \:$

$\frac{ - 3 + x2}{2} = 1$

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3 years ago

Write down the equation of a line whose slope is -7 and crosses the y-axis at 7. Express in slope-intercept form.

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Answer:

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Step-by-step explanation:

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