In 2021 a 13 year old will be 17 years old.
The answer is B. In this case when you isolate the variable it just takes 2 steps. The others require more steps and tedious calculation.
Answer:
4
Step-by-step explanation:
We are told that figure B is a scaled copy of B, which means figure A was enlarged by a certain scale factor to get a similar figure as A, now referred to as figure B.
The scale factor = ratio of any two corresponding sides of both similar figures.
Thus,
Scale factor of the similar figures given = 40/10 = 4.
This means that, figure A was scaled up by 4 times its original size to get figure B. Each side of figure B is 4 × the corresponding side in figure A.
Scale factor = 4
Answer:
<em>4 white horses.</em>
Step-by-step explanation:
First, you need to find the total of the first set of horses (basically how many total were in the table).
<em>~ 3+2+9+1 = 15</em>
Next we need to find how many horses were white horses out of these 15 horses. In short the proportion would be White Horses/Total Horses.
<em>~ </em>
<em> (or </em>
<em>, simplified)</em>
Now, all we need to do is create the proportion with 20 as the denominator (in this case, 20 will be the total horses, and we just need to find <em>X</em>, or how many horses are expected to be white out of all of those horses). The proportion will look somewhat like this:
~
= 
The final step is to multiply across (1x20) then divide that number by the 5 to find <em>X</em>.
<em>~ 20÷5 = 4</em>
Anyways, that means it would be expected to have <em>4</em> white horses out of 20 total. Hope this helped ^-^
<span>2sinx = -1
Divide both sides by 2.
sinx = -(1/2)
In the unit circle, we are given two answers for sinx = -(1/2).
x = 210 degrees AND 330 degrees
</span>