Answer:
x = 6 and w = -4
Step-by-step explanation:
(-5x+2)/7 = -4
-5x+2 = -4*7
-5x+2 = -28
-5x = -28 - 2
-5x = -30
x = -30/-5
x = 6 CHECK!!
17-3(w+5) = 6(w+5)-2w
17-3w-15 = 6w+30-2w
17-15-30 = 6w-2w+3w
-28 = 7w
w = -28/7
w = -4 CHECK!!
Answer:
d. x
Step-by-step explanation:
x(2x-1)/2x-1
x/1 since 2x-1/2x-1 cancels
x
Answer:
The standard deviation of the number of people that test positive for the HIV virus =
σ =1.427
Step-by-step explanation:
<u><em>Explanation:-</em></u>
Given the probability that test positive for the HIV virus 'p' = 3% =0.03
Given random samples 'n' = 70
by using binomial distribution
<em>The mean of the samples test positive for the HIV virus </em>
<em> μ = n p = 70 X 0.03 = 2.1</em>
<em>The standard deviation of the number of people that test positive for the HIV virus</em>
<em> σ = </em><em></em>
σ = √70 ×0.03×0.97 =√2.037 = 1.427
<u><em>Conclusion</em></u>:-
The standard deviation of the number of people that test positive for the HIV virus = σ =1.427
Answer:
A acute
Step-by-step explanation:
cause an acute it between 0-90 degrees