Answer:
y = 2 sqrt(2) - 2 or y = -2 - 2 sqrt(2) thus B. is the correct answer
Step-by-step explanation:
Solve for y:
-y^2 - 4 y + 4 = 0
Multiply both sides by -1:
y^2 + 4 y - 4 = 0
Add 4 to both sides:
y^2 + 4 y = 4
Add 4 to both sides:
y^2 + 4 y + 4 = 8
Write the left hand side as a square:
(y + 2)^2 = 8
Take the square root of both sides:
y + 2 = 2 sqrt(2) or y + 2 = -2 sqrt(2)
Subtract 2 from both sides:
y = 2 sqrt(2) - 2 or y + 2 = -2 sqrt(2)
Subtract 2 from both sides:
Answer: y = 2 sqrt(2) - 2 or y = -2 - 2 sqrt(2)
Answer:
n = -10.8
Step-by-step explanation:
Assuming you want to solve for n, all you have to do is isolate the variable by multiplying by both sides of the equation by four. This would leave you with n = -10.8
Answer:
but look at yotube the awncer is on there
Step-by-step explanation:
Answer and Step-by-step explanation:
RO = OW = 5.1
BRW + ORW = BRO = OWB
57 + 42 = 99 = OWB
I'm not entirely sure if these are correct, if its not, then im sorry.
<em><u>#teamtrees #PAW (Plant And Water)</u></em>
Answer:
c)
<em>The probability of a player weighing more than 238 </em>
<em>P( X > 238) = 0.0174</em>
Step-by-step explanation:
<u><em>Step(i):-</em></u>
Given mean of the normally distribution = 195 pounds
Given standard deviation of the normally distribution
= 20 pounds.
<em>Let 'x' be the random variable of the normally distribution</em>
Let X = 238
<u><em>Step(ii):</em></u>-
<em>The probability of a player weighing more than 238</em>
<em>P( X > 238) = P( Z> 2.15)</em>
= 1 - P( Z < 2.15)
= 1 - ( 0.5 + A(2.15)
= 1 - 0.5 - A(2.15)
= 0.5 - 0.4821 ( from normal table)
= 0.0174
<em>The probability of a player weighing more than 238 </em>
<em>P( X > 238) = 0.0174</em>