A is the answer because its the only one that is in its exact formation of the question
Answer:
a
Step-by-step explanation:
the transversal across two parallel lines causes the consecutive internal angles to be congruent according to the consecutive internal angles theorem.
In a quadratic equation of the form (ax^2 + bx + c), the discriminant is equal to (b^2 - 4ac).
So for the first question it would be
4^2 - 4*(6*-2) = 64
Second question (-7)^2 - 4*(9*5) = -131
You can do the rest.
Answer:
Step-by-step explanation:
Given that a student takes a 20-question, multiple-choice exam with five choices for each question and guesses on each question.
Since each question has 5 choices p = probability for success = pr for getting correct guess = 0.2
Each question is independent of the other and q= pr for failure =1-0.2=0.8
Hence we have X, no of correct questions in the test is binomial n =20 and p =0.2
the probability of guessing at least 15 out of 20 correctly
=
<0.00001
So we can consider this event unlikely to occur because the probability is almost zero.
Option C is correct i.e, a cube that is 1 meter long, 1 meter wide, and 1 meter high is called a unit cube.
Step-by-step explanation:
We need to identify a unit cube.
A unit cube is a cube having dimensions of 1 meter. i.e it will have
length = 1 meter
Width = 1 meter
Height = 1 meter
And the Volume of unit cube = 1 meter
So, Option C is correct i.e, a cube that is 1 meter long, 1 meter wide, and 1 meter high is called a unit cube.
Keywords: Dimensions of Cubes
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