Answer:
1. A. 2. C. 3. C
Step-by-step explanation:
To get the previous population you would have to multiply 9,300 by 38% (.38) and then add it to 9,300, or you can also multiply it by 138% (1.38) and still get the same answer but this step is only a one step the first is a two step process
<span>You are given two figures of 25 inch</span>² and 36 inch² surface areas respectively. Also, the smaller figure has a volume of 250 inch³. You are asked to find the volume of the larger area. To solve this, you can use ratio and proportion.
250 inch³/25 inch² = x/ 36 inch²
where x is the volume of the larger figure
x = 360 inch³
This follows directly from the double angle identity for sine,
sin(2<em>u</em>) = 2 sin(<em>u</em>) cos(<em>u</em>)
But supposing that's not known to you, you could use the angle sum identity:
sin(<em>x</em> + <em>y</em>) = sin(<em>x</em>) cos(<em>y</em>) + sin(<em>y</em>) cos(<em>x</em>)
Since 4<em>u</em> = 2<em>u</em> + 2<em>u</em>, we have
sin(4<em>u</em>) = sin(2<em>u</em> + 2<em>u</em>)
sin(4<em>u</em>) = sin(2<em>u</em>) cos(2<em>u</em>) + cos(2<em>u</em>) sin(2<em>u</em>)
sin(4<em>u</em>) = 2 sin(2<em>u</em>) cos(2<em>u</em>)
