Answer:
5
Step-by-step explanation:
Because two times 5 equals ten
<span>5x + 7 > 17 can be simplified by subtracting 7 from both sides:
5x > 10 Now solve for x. Div. both sides by 5.
Then x>2, or {x | x > 2} in set notation.</span>
Answer:
f(x) is even
Step-by-step explanation:
f(x) = 3
f(-x) = 3
f(x) = f(-x)
Median because the median is the MIDDLE of the data when ordered from least to greatest.
Answer:
Supongo que tenemos dos ángulos A y B
"la mitad de A mas la tercera parte de B es igual a 15°" (también supongo que son grados)
A/2 + B/3 = 15°
A/2 = 15° - (B/3)
A = 30° - 2*(B/3)
Ahora queremos calcular:
2*sin(3*A)/cos(2*B)
pero podemos reemplazar A por lo que tenemos arriba:
2*sin(3*(30° - 2*(B/3)))/cos(2*B)
2*sin(90° - 2*B)/cos(2*B)
y como sabemos,
Sin( 90° - x) = Sin(90°)*cos(-x) + cos(90°)*sin(-x) = cos(-x) = cos(x)
entonces:
2*sin(90° - 2*B)/cos(2*B) = 2*cos(2*B)/cos(2*B) = 2*1 = 2.
