1 year ago

Find the value of x in isosceles trapezoid ABCD Given AC=3x-16 and BD=10x-86

Mathematics

1 answer:

Nastasia [14]1 year ago

7 0

X = 10
(WORK SHOWN BELOW)

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Use the distributive property to solve the equation.<br> 2 (x – 9) = 10

scoundrel [369]

Answer:

x = 14

Step-by-step explanation:

Hi,

To begin, distribute the 2 to the x and -9.

So...

2 ( x - 9 ) = 10

2x - 18 = 10

2x = 28

x = 14

I hope this helps :)

5 0

3 years ago

How would you write this equation in terms of sin and cos as well as simplify it from there?

ziro4ka [17]

Try this option:
$(1+ \frac{cosx}{sinx})(1- \frac{cosx}{sinx})- \frac{1}{sin^2x}= \frac{sin^2x-cos^2x}{sin^2x}- \frac{1}{sin^2x}=$
$= \frac{sin^2x-cos^2x-sin^2x-cos^2x}{sin^2x}=- \frac{2cos^2x}{sin^2x}.$
or -2ctg²x

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3 years ago

Is every terminating decimal an integer?? Yes or no

sweet [91]

Integers do not have decimals...so ur answer is no. terminating decimals are not integers

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2 years ago

−3x + y = 4,<br><br> −9x + 5y = −1<br> find x and y

katrin [286]

Answer:

9x - 3y = -12

-9x +5y = -1

2y = -13

y = -13/2

-3x - 13/2 = 8/2

-3x = 21/2

-6x = 21

x = -21/6 = -7/2

(-7/2, -13/2)

3 0

3 years ago

What is the angle of rotation of this regular octagon? what is the measure of an interior angle?

MrRissso [65]

Second question:
sum of all the interior angle 180*(8-2)=1080 degree
sum of one interior angle 1080/8=135 degree

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3 years ago