Answer:
x=7
Step-by-step explanation:
The triangle is right angled meaning that one of the angles is 90⁰.
90+30+(9x-3)=180 (Angle sum property of a triangle)
120+9x-3=180
9x-3=180-120
9x-3=60
9x=60+3
x=63/9
<em><u>x=7</u></em>
The angle will be (9×7)-3=<u>60⁰</u>
Answer:
(a)f(4) square cm.
(b)f(10.91)-f(10.9) Square centimeter.
Step-by-step explanation:
f(r)=the area of a circle (in square cm) that has a radius of r cm.
(a)Area (in square cm) of a circle whose radius is 4 cm.
Since r=4cm
Area of the circle = f(4) square cm.
(b) When the radius of the increases from 10.9 to 10.91 cm.
- Area of the circle with a radius of 10.91 = f(10.91) square cm.
- Area of the circle with a radius of 10.9 = f(10.9) square cm.
Change in the Area = f(10.91)-f(10.9) Square centimeter.
The years when the Russo-Japanese war had not yet happened is the year of 1903 and before
Let x represents years, the inequality system is x < 1904
