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Greeley [361]
3 years ago
8

If student D can solve 60% of multiple choice questions and Student B can solve 51% of the multiple choice questions and Student

C can solve 57%. The students are unaware of each other.
a) At least one can be solved
b) Probability at most one of them can be solved
c) Probability that neither of them can be solved
d) Exactly two them can be solved
Mathematics
1 answer:
SOVA2 [1]3 years ago
3 0
Do you know answer or not please give me answer
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5 0
3 years ago
Kamal wrote the augmented matrix below to represent a system of equations
Alina [70]

Consider the operation is R_2\to -3R_2.

Given:

The augmented matrix below represents a system of equations.

\left[\left.\begin{matrix}1&0&1\\1&3&-1\\3&2&0\end{matrix}\right|\begin{matrix}-1\\-9\\-2\end{matrix}\right]

To find:

Matrix results from the operation R_2\to -3R_2.

Step-by-step explanation:

We have,

\left[\left.\begin{matrix}1&0&1\\1&3&-1\\3&2&0\end{matrix}\right|\begin{matrix}-1\\-9\\-2\end{matrix}\right]

After applying R_2\to -3R_2, we get

\left[\left.\begin{matrix}1&0&1\\-3(1)&-3(3)&-3(-1)\\3&2&0\end{matrix}\right|\begin{matrix}-1\\-3(-9)\\-2\end{matrix}\right]

\left[\left.\begin{matrix}1&0&1\\-3&-9&3\\3&2&0\end{matrix}\right|\begin{matrix}-1\\27\\-2\end{matrix}\right]

Therefore, the correct option is A.

7 0
3 years ago
Calculate the side of a square whose perimeter is 36m<br>Show working<br>Step by step explanation​
Pie

Answer:

One side is 9 m

Step-by-step explanation:

Perimeter = 36 m

Perimeter = 4a

a = P/4

a = 36/4

a = 9

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frutty [35]
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8 0
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