Answer:
The valid value of x is x=-2
Step-by-step explanation:
we know that
The sum of the interior angles of any quadrilateral must be equal to 360 degrees
so

solve for x
Combine like terms


Divide by 10 both sides

The formula to solve a quadratic equation of the form
is equal to

in this problem we have

so

substitute in the formula





Remember that
The measure of the interior angle cannot be a negative number
For x=9
we have that the measure of one interior angle of quadrilateral is

substitute the value of x

therefore
The value of x=9 cannot be a solution
For x=-2
The measure of the interior angles are

therefore
The valid value of x is x=-2
Answer:
31
Step-by-step explanation:
Depth Changes:
1. down 25 feet
2. down 10 feet
3. up 7 feet
4. down 3 feet
Answer:
It’s the third one, the one that u r clicking on
Step-by-step explanation:
Answer:
first one: B and C
Second one: x=12, y=10 so the answer is B.
Step-by-step explanation:
First one: Irrational numbers are any numbers that go on forever in the decimal without ever repeating. Any square roots of numbers that aren't perfectly square, such as 4 and 9, are irrational. And anything with pi, or
, is always irrational.
Second one: 144 and 100 are perfect squares, meaning it can be created by multiplying the same number by itself, in this case 12 and 10. Subtract those and you get 2.
Answer:
UHHHHHHH....…
Step-by-step explanation: