Answer:
No real solutions.
Step-by-step explanation:
Square both sides:
Evaluate the discriminant:
$\Delta =3^2-4 \times 1 \times 4$
$= 9-16=-7<0$
Since $\Delta $ is less than zero, there are no real solutions.
A map is to be constructed such that 1cm on the map represents 100m on ground. What
1 answer:
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Answer:
0.9168
Step-by-step explanation:
From the data given:
Mean = 110
standard deviation = 5
Let consider a random sample n =49 which have a mean between 109 and 112.
The test statistics can be computed as:
= -1.4
Thus; P(109 < < 112) = P( - 1.4 < Z < 2.8)
= P(Z < 2.8) - P( Z < -1.4)
= 0.9974 - 0.0806
= 0.9168