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3 years ago

Is 2xy = -8 a function

2 answers:

4 0

2xy=-8

You can find a value of x and a value for y that would make that true, so YES it is a function.
Example:
2(2)(-2) = -8

rodikova [14]3 years ago

3 0

No, because it <em>is not a straight line when graphed.</em>

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Each exterior angle of a regular polygon is 10°. How many sides does it have?

jeka94

Answer:

if exterior angle is 10 degrees, then interior angle is 180 -10 = 170 deg.

Each trinaglke inside the polygon will be isosceles with two angles of 170/2 - 85 degrees each.

So, angle at centre = 180 -170 = 10 deg.

Ttal angle at centre = 360 deg.

No of sides = 360 /10 = 36 sided polygon.

b) Sum of interior angles is given by (2N-4) Right angles

So: 9900 = (2N-4)x90 = 180N - 360

180N = 9900 +360 = 10260

N = number of sides = 10260 / 180 = 57 sides

5 0

3 years ago

Table for y=-2/5x-3???????

mrs_skeptik [129]

Answer : Y=-15/7

Explanation:

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3 years ago

Given g(x) = 2x + 1, solve for a when g(x) = 7.

Over [174]

You would evaluate by plugging in the given number of 7 to get your answer.

7 0

2 years ago

Sec(x)-tan(x)=1/sec(x)+tan(x)

Rama09 [41]

Answer:

Step-by-step explanation:

I assume that you mean

sec(x)-tan(x) = 1 / ( sec(x) + tan(x) ) , right ?

then this is equivalent to

[ sec(x) - tan(x) ] x [ sec(x) + tan(x) ] = 1

let s evaluate it, we got

sec2(x) - sec(x)tan(x) + - sec(x)tan(x) - tan2(x) = sec2(x) - tan2(x)

= (1 - sin2(x) ) / cos2(x) = cos2(x) / cos2(x) = 1

as cos2(x) + sin2(x) = 1

3 0

3 years ago

1-(1.00375) exponent-12(30)

victus00 [196]

Answer:

360

Step-by-step explanation:

7 0

3 years ago