SOH CAH TOA
sin is opposite/hypotenuse
cos is Adjacent/hypotenuse
tan is opposite/adjacent
You can cross multiply to get 4 * 21 = 7x
84 = 7x; divide both sides by 7
12 = x so the number 12 will go in the blank (12 girls)
Answer:
Jamie is currently 15.
Step-by-step explanation:
Answer:
x = 0 and x= 3
Step-by-step explanation:
2x ² = x² + 3x
so
2x² - x² - 3x =0
x²- 3x = 0
x ( x - 3 ) = 0
x = 0
x = 3