2x^2 + 3xy - 4y^2 when x = 2 and y = -4
= 2(2)^2 + 3(2)(-4) - 4(-4)^2 = 2(4) + (-24) - 4(16) = 8 - 24 - 64 = -80
Hello :
sin(−θ) = - sin(θ)
cot(−θ) = - cot(θ)
cot(θ) = cos(θ)/sin(θ)
sin(−θ) cot(-θ) = (- sin(θ))×(-cos(θ)/sin(θ)) = cos(<span>θ)</span>
Answer:
16.8
Step-by-step explanation:
Plug the equation (700+(-196))/((30+(3.5-(1/2))))+(-3)) into a calculator
Answer:
w=9/8
Step-by-step explanation:
i searched it up XD
Answer:
a = 1.5
VW = 9 ft
Step-by-step explanation:
Since the tangent lines connect both circles, we know that the line VU and VX are congruent (equal). Thus, we can set them equal to each other and solve for a:
a + 4 = a² + 0.25 Set equal
a² - a = 3.75 Isolate a values
a² - a + 0.25 = 3.75 + 0.25 Complete the square
(a + 0.5)² = 4 Factor
a + 0.5 = 2 Simplify
a = 1.5
Now we need to calculate VW, but thats easy because its equal to TV, and since we know a, we can just plug it in:
((1.5) + 7.5) ft
9 ft
