Answer:
u = x²
Step-by-step explanation:
4x⁴ − 21x² + 20 = 0
Substitute u = x² to turn the equation into a quadratic.
4u² − 21u + 20 = 0
You can solve by factoring.
(4u − 5) (u − 4) = 0
u = 5/4 or 4
x² = 5/4 or 4
x = ±½√5 or ±2
Hello there, hope you are having a nice day.
We are given the slope of the line and a point on the line, so we can write the equation in point-slope form:
y-7=-3(x-(-1)
y-7=-3(x+1)
y-7=-3x-3
Now, we move -7 to the right side, using the opposite operation:
y=-3x-3+7
y=-3x+4
This is the equation of our line. Hope it helps.
Ask me if you have any queries.
~An emotional teen who helps others with joy
Good luck.
Answer:
1:1
Step-by-step explanation:
Im pretty sure its 1:1 because its an isosceles triangle. think of a 45-45-90 triangle as a square cut in half diagonally--the sides of a square are all equal so the ratio of one leg to the other is 1:1
there are two legs and one hypotenuse in a right triangle--the hypotenuse is the longer side, opposite the right angle
Call the unknown integer x translate 40% of that integer as 0.4x the rest is very straight forward: 0.4x > 9.6 divid both sides of the inequality by 0.4 to find that x > 24 The question specifically says greater (not greater than or equal to) so the correct answer is 25 witch is D