Using the image I gave you, you don't need to solve for x.
So tan is opposite/adjacent
sin: opposite/hypotenuse
cos: adjacent/hypotenuse
Take theta and do: adjacent/hypotenuse which is cosine
cos theta = adjacent/hypotenuse
cos theta = 1.5/9
inverse cos = 1.5/9 and the answer is: 80.4 degrees
PR : RC = PQ : AC
so,
PQ = 2.8 inches
Hope this helps
Answer:
It must be a perfect square. You can try factoring each equation to see if you have a perfect square, or you can evaluate the discriminant of each one. If the discriminant is zero, there is one real root to the equation. Try this approach.
f(x) = ax2 + bx + c
D = b2 - 4ac
If D = 0, then there is exactly one root, and it is real.
Answer:
c. ax+b=ax+b
Step-by-step explanation:
To know what equation has infinite solutions, you first try to simplify the equations:
a.
In this case you have that a must be different of b, but there is no restriction to the value of c, then c can be equal to a or b.
b.
Here you obtain that b = c. But the statement of the question says that a, b and c are three different numbers.
c.
In this case you have that whichever values of a, b and are available solutions of the equation. Furthermore, when you obtain 0=0, there are infinite solutions to the equation.
Then, the answer is:
c. ax+b=ax+b
Answer:
Volume is 21
Explanation
Base length is 4.5
Widgth is 3.5
and height is 4 (I can't tell if its 2 because picture is blurry)
V=lwh/3=4.5·3.5·4= 21