Answer:
24. x = 8.
25. x = -9, 10.
Step-by-step explanation:
The zeros of the functions are the solutions to the equation when y=0. To find the solution, factor each equation.
24. Look for two factors that multiply to 64 and add to -16. The factors are -8 and -8. Write them in binomial forms.
(x-8)(x-8)
So x = 8.
25. Look for two factors that multiply to -90 and add to -1. The factors are 9 and -10. Write them in binomial forms.
(x+9)(x-10)
So x = -9, 10.
Answer:
Step-by-step explanation:
Using trigonometric ratio cos.
Here,
- Theta = θ = x
- Adjacent = 12
- Hypotenuse = 28
<h3><u>Finding x:</u></h3>
![\displaystyle cos \theta =\frac{adjacent}{hypotenuse} \\\\cos \ x =\frac{12}{28} \\\\cos \ x = 0.43\\\\x = cos^{-1} 0.43\\\\x = 65 \textdegree\\\\\rule[225]{225}{2}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20cos%20%5Ctheta%20%3D%5Cfrac%7Badjacent%7D%7Bhypotenuse%7D%20%5C%5C%5C%5Ccos%20%5C%20x%20%3D%5Cfrac%7B12%7D%7B28%7D%20%5C%5C%5C%5Ccos%20%5C%20x%20%3D%200.43%5C%5C%5C%5Cx%20%3D%20cos%5E%7B-1%7D%200.43%5C%5C%5C%5Cx%20%3D%2065%20%5Ctextdegree%5C%5C%5C%5C%5Crule%5B225%5D%7B225%7D%7B2%7D)
Answer: 340
Step-by-step explanation:
100 - 74 = 26%
26% = .26
x * .26 = 88.4
/.26 /.26
x = 340
check
340 * .74 = 251.6
340 - 251.6 = 88.4
