What's the question- what is x?
So for this triangle, since it's not right (No 90° angle, at least not shown), we must use special trigonometric triangles. You may have used Pythagorean Theorem, but you can't unless it's a right triangle.
Now we decide between Law of Sines vs. Law of Cosines. L. of Sines is for when we have 2 angles and one or more sides. L. of Cosines is for when we don't have that 2nd angle, but do have 2 sides... our case here.
Here's how the Law of Cosines works:
where c is the side needed, a & b are the 2 known sides, and gamma (γ) is the angle opposite the side c.
So a = 21, b = 42, γ = 39°
NOPE YOU DID IT CORRECTLY!!
You're "x" = 28.88°
<span>The answer is 'D'. Method: substitute y with x-5 in each of the equations for solving simultaneously. We get a quadratic equation of the form Ax2 +Bx+ C = 0. It has only one real solution if B2-4AC = 0. This holds true only with the last option where
after substitution of y we get x2+6x+9 = 0. B2-4AC =36-4*9=0. So the parabola y= x2 +7x +4 has one real solution with the line y = x- 5. The solution point is (-3,-8).</span>
Answer:
252 trees
Step-by-step explanation:
450 trees total
56% are infected
450 * .56 = 252 trees
Answer:
given
p=q^3
p=40
______
q=(p)^1/3
q=(40)^1/3-->q=2(5)^1/3
Now
the value of half of q , (2(5)^1/3)÷(2) ,is 5^1/3.
finally the value of p gonna be
p=q^3
p=(5^1/3) ^ 3
p=5
Answer: 7/25
Step-by-step explanation: you have 7 yellow marbles and then to get your denominator you have to add up all the marbles from container a and container b and you will get 25.
7= yellow marbles
25= all the marbles in container a and b
hope this helps.