3 years ago

Solve x2 - 16x +64=-8 as

Mathematics

1 answer:

White raven [17]3 years ago

6 0

Answer:

Hello!

_______________________

$x = 8 + 2i\sqrt{2,8} - 2i\sqrt{2}$

Step-by-step explanation:

Solve the equation for x by finding x a, b, and c of the quadratic then applying the quadratic formula.

Hope this helped you!

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In drafting class, Manual is drawing blueprints for a house. The scale is 1/4 inch equals 1 foot. If a bedroom is to be 14 Feet

frozen [14]

Answer:

3.5 inches

Step-by-step explanation:

we know that

The scale drawing is

$\frac{1}{4}\ in:1\ ft$

That means

1/4 inch in the drawing represent 1 foot in the actual

using proportion

Find out the dimension in the drawing corresponding to a 14 feet wide in the actual

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3 years ago

A point on the terminal side of an acute angle in standard position is (1, 2 √2). Find the cosine value of this angle.

kozerog [31]

Answer:

$cos\theta=1/3$

Step-by-step explanation:

The point at the terminal side of an acute angle is given by $(1, 2\sqrt{2} )$ .

That is,

$x = 1$ and $y= 2\sqrt{2}$ .

Let r be the length of line segment drawn from the origin to the point and is given by the formula:

$r = \sqrt{x^{2} + y^{2}}$

Substituting the values of x and y into r,

$r = \sqrt{1^{2} + (2\sqrt{2} )^{2}}$

$r = \sqrt{1 + 8}$

$r = \sqrt{9}$

Thus, $r=3$

Also, $cos\theta$ is given by:

$cos\theta = x/r\\$

Substituting values of x and r,

$cos\theta = 1/3\\$

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3 years ago

If you know the ratio of inches to centimeters is 1 to 2.54, how can you find the number of centimeters equivalent to 9 inches?

Evgen [1.6K]

Centimeters = inches * 2.54

9 inches is equivalent to 9*2.54 = 22.86 centimeters

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3 years ago

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eduard

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Step-by-step explanation:

1.B

2.C

3.D

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3 years ago

Which ratio is equal to 27 : 81?

Elena-2011 [213]

Answer:

3:9 u can reduce it again to 1:3

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