X^2+2x^2=14+7
3x^2=21
x^2=7
x=±√7
Answer:
Single Blind (option 1)
Step-by-step explanation:
The subjects don't know which cream they have but the technicians do.
If the subject knows which cream they have then they can be influenced by the placebo effect. If they don't know but the technicians do then the technicians will be able to look at unbiased responses from the subjects and tell if it works or not. If the technicians don't know which cream each subject has then they won't be able to learn anything from the responses. The technicians need to know which cream each subject has and the subjects can't know which cream they had.
It is 50 degrees.
Since you already know two are 90 and 40 add them together and you get 130.
A triangle has 180 degrees so minus 130 from that
180-130=50
Given:
2012 - 23,000 = base count
rate increase per year = 2%
y = 23,000 (1 + 0.02)^x
x is used as an exponent. 2012 will be 0. 0.02 is the decimal form of 2% increase.
2012 : y = 23,000 (1.02)⁰ = 23,000 (1) = 23,000
2013 : y = 23,000 (1.02)¹ = 23,000 (1.02) = 23,460
2014 : y = 23,000 (1.02)² = 23,000 (1.0404) = 23,929.20
Answer:
653.91 squared or 326.955 not squared
Step-by-step explanation:
We have a hyponuse of 26 and one leg of 4.7 and we are trying to figure out the missing leg!
The first step is
A^2 + B^2 = C^2
2 step
4.7^2 + B^2 = 26^2
3 step
4.7 x 4.7 = 22.09 and 26 x 26 = 676
4 step
22.09 + B^2 = 676
5 step
676 - 22.09 = 653.91
6 step
Answer
653.91 squared or 326.955 not squared!
hope this helps